135results about How to "Reduce airflow resistance" patented technology

A method is described for modifying at least one property of a tissue of or near a nasal valve of a nose, without using a surgical incision or an implant, to decrease airflow resistance or perceived airflow resistance in a nasal airway. The method may involve contacting a treatment element of a treatment device with the at least one tissue inside the nasal airway, with sufficient force to at least temporarily deform the at least one tissue, applying energy to, or removing energy from, the at least one tissue, using the treatment element, and removing the treatment element from the nostril.

A motor vehicle dehumidifier, including a dehumidifying drying agent, that can provide a required dehumidifying capacity with a reduced overall quantity of drying agent compared to conventional drying agent-based dehumidifiers. In the present invention, a heat exchanger is disposed on an upstream side of a drying agent unit, and heat is exchanged in the heat exchanger between inside air to be dehumidified and low-temperature outside air used to cool the inside air. The air cooled by the heat exchanger flows into the drying agent unit and is dehumidified. Because the air has an increased relative humidity as a result of being cooled, the amount of water adsorbed from it per unit of drying agent is increased, as the water adsorption characteristic of the drying agent is greatly influenced by the relative humidity of the air passing over it, and is markedly improved by an increase in the relative humidity of that air.

A cooling door assembly includes a frame and a cooling door coupled to the frame. The cooling door includes one or more heat exchangers. The frame is configured to mount to the back of a server rack or other electronics enclosure in such a manner that the cooling door opens to allow access to the electronics servers within the server rack while maintaining a fluidic connection to an external cooling system. The frame is coupled to the external cooling system and the cooling door includes swivel joints configured to provide a fluid path between the cooling door and the frame. In this manner, the frame remains in a fixed position, while the cooling door is configured to rotate relative to the frame so as to open and close, while maintaining the fluid path through the swivel joint.

A cooling door assembly includes a frame and a cooling door coupled to the frame. The cooling door includes one or more heat exchangers. The frame is configured to mount to the back of a server rack or other electronics enclosure in such a manner that the cooling door opens to allow access to the electronics servers within the server rack while maintaining a fluidic connection to an external cooling system. The frame is coupled to the external cooling system and the cooling door includes swivel joints configured to provide a fluid path between the cooling door and the frame. In this manner, the frame remains in a fixed position, while the cooling door is configured to rotate relative to the frame so as to open and close, while maintaining the fluid path through the swivel joint.

A electrical fan includes a frame (10) having a central tube (11), a bearing (30) received in the central tube, a stator (50) mounted around the central tube, and a rotor (70) being rotatably supported by a bearing in the stator. The frame defines an air inlet (19) and an air outlet (17) at two different sides thereof. The stator and the rotor expand radially along a direction from the air inlet to the air outlet. Fan blades (75) extend radially from the rotor. A hub (71) of the rotor has a streamline shaped outer surface. A stator core (511) of the stator is made by powder sintering technology.

A method for reshaping a nasal airway in a patient involves advancing an inflatable balloon of a reshaping device in an uninflated configuration into a nostril of the patient and between a nasal septum and a lateral wall of the nasal airway. The method then involves inflating the inflatable balloon to an inflated configuration to cause the inflatable balloon to contact nasal mucosa covering the nasal septum and the lateral wall, delivering energy from an energy delivery member attached to or inside of the inflatable balloon, and removing the reshaping device from the nasal airway.

A heat sink includes a base and a plurality of spaced parallel fins arranged on the base. Adjacent fins define a plurality of passages there between. Each passage includes an inlet and at least one outlet. The base and the fins made separately, and the fins is thin, such that amount of the fins arranged on the base increases. And the fins are disposed on the base alternately or / and staggered such that the inlet and the outlet are wider than a middle part of the passage to lower airflow resistance thereat. Thus, the heat sink has large heat dissipating area and low airflow resistance synchronously.

A cooling door assembly includes a frame and a cooling door coupled to the frame. The cooling door includes one or more heat exchangers. The frame is configured to mount to the back of a server rack or other electronics enclosure in such a manner that the cooling door opens to allow access to the electronics servers within the server rack while maintaining a fluidic connection to an external cooling system. The frame is coupled to the external cooling system and the cooling door includes swivel joints configured to provide a fluid path between the cooling door and the frame. In this manner, the frame remains in a fixed position, while the cooling door is configured to rotate relative to the frame so as to open and close, while maintaining the fluid path through the swivel joint.

A method for reshaping a nasal airway in a patient involves advancing an inflatable balloon of a reshaping device in an uninflated configuration into a nostril of the patient and between a nasal septum and a lateral wall of the nasal airway. The method then involves inflating the inflatable balloon to an inflated configuration to cause the inflatable balloon to contact nasal mucosa covering the nasal septum and the lateral wall, delivering energy from an energy delivery member attached to or inside of the inflatable balloon, and removing the reshaping device from the nasal airway.

Methods and devices for treating nasal airways are provided. Such devices and methods may improve airflow through an internal and / or external nasal valve, and comprise the use of mechanical re-shaping, energy application and other treatments to modify the shape, structure, and / or air flow characteristics of an internal nasal valve, an external nasal valve or other nasal airways.

A nose dilation device includes a resilient one-piece plastic body including a generally U-shaped center portion and a pair of substantially horizontally oriented dilation rings extending outwardly from an upper end of the center portion and adapted to internally engage nasal passages of a user.

An air swirling device adapted to be used in the air flow system of an internal combustion engine which comprises a swirling device body having a external dimension adapted for incorporation into said air flow system, a plurality of wing members having upper and lower side surfaces, said wing members extending radially and slantingly from the periphery of the swirling device body toward the center therof, and wherein at least one of the upper and lower side surfaces has a non-linear configuration.

A method for the production of a riblet film, having at least one surface that reduces airflow resistance involves the provision of a metal film that is structured using a mechanical treatment.

A removable intraoral apparatus for improving airway patency is described. Wearing the apparatus alters the position, configuration and freedom of movement of the tongue, the muscles of mastication, as well as the pharyngeal and facial muscles. The apparatus is useful for correcting snoring and / or obstructive sleep apnea due to intermittent closures or partial obstructions occurring in the oropharynx during sleep. The apparatus of the invention can improve various types of airway disorders and improve oral functions by changing the position, configuration and freedom of movement of selected portions of the tongue and mouth, reducing the resistance to air flow in the mouth and pharynx, re-orienting and reprogramming the muscles of the mouth and tongue, and maintaining a proper oral systemic balance.

A device is described for treating a nasal airway by modifying a property of a nasal tissue of or near a nasal valve of the airway, without using a surgical incision or an implant, to decrease airflow resistance or perceived airflow resistance in the nasal airway. Various embodiments include an elongate shaft, a bipolar radiofrequency delivery member extending from one end of the shaft, and a handle attached to the elongate shaft at an opposite end from the radiofrequency delivery member. The radiofrequency delivery member is sized to be inserted into a nose and configured to at least temporarily deform the nasal tissue and deliver radiofrequency energy. The radiofrequency delivery member includes two rows of protruding electrodes disposed on a tissue contact surface, and the device is configured to deliver radiofrequency energy from one row of electrodes to the other row of electrodes.

Disclosed is a heat exchanger including a plurality of tubes through which refrigerants flow, the tubes being spaced away from each other, and a plurality of fins spaced away from each other at a predetermined distance. Each of the fins has fin collars through which the tubes are perpendicularly inserted, seat portions each concentrically formed around outer circumferences of the fin collars and provided with laterally-opened front and rear portions, more than two peak portions, and more than two valley portions, the peak and valley portions being alternately disposed to provide airflow variation.

Provided are an adsorption sheet and an air-purifying filter, which can have low air-flow resistance and high deodorizing performance and be resistant to clogging by dust, from which a powdered adsorbent can hardly drop off, and in which any attached agent can hardly lose its effect. Such a product can be obtained by a process including the steps of: sufficiently premixing an agent-bearing activated carbon powder and a powdered thermoplastic resin to form a mixed powder; then spreading the mixed powder on a base sheet having a certain bulkiness and bearing an agent; stacking an air-permeable sheet thereon; and hot-pressing them.

In a vehicle air conditioner, two foot openings are provided in right and left wall portions of a case, and are opened and closed by two foot doors, respectively. Each door surface of the foot doors is moved along a surface of the right and left wall portions for opening and closing the foot openings. A face opening is provided in a top wall part of the case to be opened an closed by a face door. An operation locus of the foot doors is overlapped with that of the face door when being viewed from a direction perpendicular to the door surface of the foot door, while the face door is operated between the foot doors to have a clearance between the face door and each foot door.

A conventional machine package faces problems concerned with costs, weight, etc. and also a problem of antinomy that an attempt to enhance the noise reducing performance increases the airflow resistance and then deteriorates the cooling performance. Providing a sound absorbing structure with the heat radiation performance ensured within a practical range and then with considerably improved noise reducing effect achieves a low-noise machine package with a downsized casing and a reduced cooling fan power. There is provided a sound absorbing structure having a plurality of polyester fiber sound absorbing cylinders each formed into a circular-cylindrical shape, formed of a base material of polyester fiber whose surface is combined and covered with polymer nonwoven fabric of polyester fiber or the like, and arranged at a support member in at least either of a suction port and an exhaust port in such a manner that long axes of the sound absorbing cylinders intersect substantially perpendicularly with a flow direction of air flowing through the suction port or the exhaust port. This makes it possible to reduce noise while controlling the airflow resistance minimum, thus achieving downsizing of a cooling fan and reduction of a cooling fan power.

An intake manifold capable of being connected with a throttle valve apparatus includes a conducting pipe defining an air intake pathway therein, a surge tank for receiving air flowing from the throttle valve apparatus through the air intake pathway, and a noise prevention net placed within a half of a cross section of the air intake pathway. The noise prevention net has a net portion for reducing noise volume and defines at least one opening outside of the net portion in a radial direction in the cross section of the air intake pathway such that the opening is positioned along or near an inner wall of the conducting pipe

A vent duct having an inner fluid flow passage includes a bent portion formed to a duct body portion at which the fluid flow passage is bent, and a protruded portion formed on a downstream side of the bent portion so as to protrude from an inner peripheral surface portion toward an axial center of the fluid flow passage, wherein the protruded portion includes an upstream side end portion formed to be gently continuous to the inner peripheral surface portion of a downstream side portion of the bent portion, a body portion extending from the upstream side end portion toward the downstream side portion along the fluid flow passage, and a downstream side end portion along the fluid flow passage to be continuous to the body, the downstream side end portion of the protruded portion being formed to be perpendicular to the inner peripheral surface portion.

A vented cover includes a pair of cross-flow ventilation ducts each including an acoustic noise reduction lining. The ducts are “cross-flow” in that they cross and bypass one another. The cover is affixed to an enclosure containing components of a computer system and abuts against a panel of the enclosure having an airflow aperture. An air moving device (AMD) passes air through the enclosure from the ducts if the cover is an intake cover, and / or into the ducts if the cover is an exhaust cover. The ducts increase the air path length, and the acoustic absorbing surface, thereby increasing acoustic attenuation. Airflow resistance is reduced by reducing surfaces perpendicular and close to the area where air enters and by reducing sharp turns in the ducts. The cover has a relatively thin depth because the ducts cross and bypass each other in a very space efficient manner.