30results about How to "Increase airflow resistance" patented technology

Systems, delivery devices, and methods to treat to ablate, damage, or otherwise affect tissue. The treatment systems are capable of delivering a coolable ablation assembly that ablates targeted tissue without damaging non-targeted tissue. The coolable ablation assembly damages nerve tissue to temporarily or permanently decrease nervous system input. The system, delivery devices, and methods can damage tissue and manage scarring and stenosis.

A corrugate fin 14 of an evaporator 1 includes wave crest portions 14a, wave trough portions 14b, and flat connection portions 14c connecting together the wave crest portions 14a and the wave trough portions 14b. Opposite end portions of a cutout 95 extend to corresponding connection portions 14c located at opposite ends of the wave crest portion 14a and the wave trough portion 14b. A projection 96 projecting inward is formed integrally with end portions of the connection portions 14c, the end portions of the connection portions 14c corresponding to opposite ends of the cutout 95. The projection 96 is formed in such a manner as to extend between the end portions of the connection portions 14c located at the opposite ends of the wave crest portion 14a and the wave trough portion 14c. The projection 96 projects inward in a shape resembling a lying letter V. The evaporator 1 exhibits excellent drainage of condensed water and enables high work efficiency in manufacture thereof.

The invention relates to a cigarette filter stick capable of improving the selective harm reduction effect. The cigarette filter stick comprises a tow filter core and forming paper wrapping the tow filter core, wherein the tow filter core comprises a selective adsorption filter core section close to a cut tobacco and a general filter core section close to the end part of a cigarette; a drainage part is also arranged between the selective adsorption filter core section and the general filter core section; and the drainage part is spaced from the inner side of the forming paper at intervals. According to the cigarette filter stick, due to the arrangement of the drainage part, the airflow resistance in the center of a filter tip is increased, and the airflow flow form of main stream smoke is changed, so that the airflow is forced to transfer to the two sides; more adsorption materials can be in contact with the smoke more uniformly, so that the utilization rate is increased; few smoke components in macromolecular non target adsorptive objects pass through the selective adsorption materials, so that the harm of the smoke components on the selective adsorption materials is reduced, namely material hole blockage or intoxicating phenomenon is reduced.

The invention relates to a mobile phone polaroid laminating machine capable of reliably laminating a polaroid. A polaroid loading mechanism comprises a loading platform longitudinally lifting mechanism, a loading platform station switching mechanism installed on the loading platform longitudinally lifting mechanism and a polaroid loading platform installed on the loading platform station switching mechanism; the polaroid loading platform comprises a laminated polaroid transferring substrate and a laminated polaroid transferring hinged side panel which is installed on the loading platform station switching mechanism, the laminated polaroid transferring substrate is hinged to the bottom end of the laminated polaroid transferring hinged side panel, the side, opposite to the hinged point, of the laminated polaroid transferring substrate can longitudinally rotate around the laminated polaroid transferring hinged side panel, the laminated polaroid transferring substrate is connected with a laminated polaroid transferring cylinder which drives one side edge of the laminated polaroid transferring substrate to rotate, a polaroid aligning mechanism is installed on the laminated polaroid transferring substrate, a vacuum adsorption plate which can absorb and fix the polaroid is installed at the bottom of the laminated polaroid transferring substrate in an attached mode, and a high-speed camera is arranged on the side edge of a vacuum adsorption seat which is fixed through a glass substrate. The mobile phone polaroid laminating machine capable of reliably laminating the polaroid has the advantages of being reasonable in polaroid laminating action and good in polaroid laminating quality.

The invention discloses a motor fan device, air flowability adjusting equipment and an air capacity control method. The motor fan device comprises a motor, a processor, a storage device for storing alookup table and a speed detection unit. The processor obtains the target driving voltage and the corresponding target rotating speed of the motor by inquiring the lookup table or carrying out calculation based on data in the lookup table according to the preset air capacity. When the rotating speed difference between the practical rotating speed and the target rotating speed of the motor is not within a preset rotating speed difference range, a gain value is repeatedly increased to the target driving voltage to obtain the new target driving voltage, the target rotating speed corresponding tothe new target driving voltage and the practical rotating speed of the motor are obtained, whether the rotating speed difference between the practical rotating speed and the target rotating speed is within the preset rotating speed difference range or not is judged, the operations are carried out till the rotating speed difference is within the preset rotating speed difference range, and the corresponding target rotating speed at the movement is kept to drive the motor. An air flowability adjusting system can output the constant air capacity.

The invention discloses an airbag type ventilation and drainage positive and negative pressure water hammer control valve group. The airbag type ventilation and drainage positive and negative pressure water hammer control valve group is arranged on an infusion pipeline or a container system and comprises a water hammer relief valve, a trace exhaust valve, a high-speed exhaust valve, a rear regulating valve, a negative pressure air suction valve, a manual venting and draining valve and a monitoring pressure gauge; the rear regulating valve is arranged at the outlet end of the high-speed exhaust valve; the water hammer relief valve is directly connected with the top or the lateral side of the negative pressure air suction valve through threads or a flange; the trace exhaust valve is connected with a hole which is formed in the front of the water hammer relief valve; the high-speed exhaust valve is directly connected with the top or the lateral side of the negative pressure air suction valve through threads or a flange; the negative pressure air suction valve is connected with the external infusion pipeline. According to the airbag type ventilation and drainage positive and negative pressure water hammer control valve group which is integrated and omni-directional, the structure is compact and firm, the conveying and the installation are convenient, the reliability is strong, the positive pressure water hammer can be relieved, the relief speed is high, and the water hammer of cavities collapsing due to the negative pressure can be inhibited.

Improved water management systems which deflect or collect evaporative liquid exiting counterflow heat exchangers and improve airflow distribution are provided. Such heat exchangers include open cooling towers, closed circuit cooling towers, and evaporative condensers. The improved water management systems eliminate water splash out and the noise associated with water splashing. Further, when the fan assemblies are located below the evaporative heat exchanger, the improved water management systems keep the fans dry and prevent freezing in subzero climates.

An in tire sound absorber for a pneumatic wheel assembly including a wheel rim and a tire fitted to the wheel rim. The sound absorber comprises a first fibrous layer and a second fibrous layer with a higher air flow resistance than the first layer. The sound absorber is configured to fit around the wheel rim with the first layer in contact with a surface of the wheel rim and extending substantially between the second layer and the wheel rim.

An oxygen sensor includes a sensing element detecting an oxygen concentration in a measurement gas that flows in a pipe, a cylindrical protector which covers an outside of the sensing element and whose top end portion projects toward an inside of the pipe. An outside diameter D of the protector and a projection amount L of the protector inside the pipe are set so that a ratio of the product of the outside diameter D and the projection amount L (D×L) to a cross-sectional area S of a flow passage of the pipe becomes substantially smaller than or equal to 2.5%.

Disclosed is a blast fan for blowing air in a centrifugal direction thereof. The blast fan comprises a hub coupled to a rotating shaft of a motor, and a plurality of blades equally spaced and arranged around the outer peripheral surface of the hub. More particularly, the blast fan, of axial flow type or diagonal flow type, is configured so that turbo blades are integrally coupled to respective tips or trailing edges of the rotary blades. By achieving an optimal installation angle of the turbo blade, it is possible to achieve an increase in the flow rate and to reduce the level of noise generated.

An in-tire sound absorber for a pneumatic wheel assembly including a wheel rim and a tire fitted to the wheel rim. The sound absorber comprises a first fibrous layer and a second fibrous layer with a higher air flow resistance than the first layer. The sound absorber is configured to fit around the wheel rim with the first layer in contact with a surface of the wheel rim and extending substantially between the second layer and the wheel rim.

A shower plate is adapted to be attached to the showerhead and includes a front surface adapted to face the susceptor; and a rear surface opposite to the front surface. The shower plate has multiple apertures each extending from the rear surface to the front surface for passing gas therethrough in this direction, and the shower plate has at least one quadrant section defined by radii, wherein the one quadrant section has an opening ratio of a total volume of openings of all the apertures distributed in the section to a total volume of the one quadrant section, which opening ratio is substantially smaller than an opening ratio of another quadrant section of the shower plate.

An improved water management system with improved airflow distribution for counterflow evaporative heat exchangers is provided. Such heat exchangers include open cooling towers, closed circuit cooling towers, and evaporative condensers. The improved water management system eliminates water splash out and the noise associated with water splashing. Further when the fan assemblies are located below the evaporative heat exchanger, the improved water management system keeps the fans dry and prevents freezing in subzero climates.

The invention relates to a lining machine for a mobile phone polarizer with reliable alignment. A polarizer loading mechanism comprises a loading platform longitudinal lifting mechanism, a loading platform station switching mechanism and a polarizer loading platform, wherein the loading platform station switching mechanism is mounted on the loading platform longitudinal lifting mechanism; the polarizer loading platform is mounted on the loading platform station switching mechanism; the polarizer loading platform comprises a lining transferring base plate and a lining transferring hinge lateral plate; the lining transferring hinge lateral plate is mounted on the loading platform station switching mechanism; the lining transferring base plate is hinged with the bottom end of the lining transferring hinge lateral plate; a lateral edge of the lining transferring base plate opposite to a hinge point can be rotated along the longitudinal direction of the lining transferring hinge lateral plate; a lining transferring cylinder which is used for driving the lateral edge of the lining transferring base plate to rotate is connected with the lining transferring base plate; a polarizer aligning mechanism is mounted on the lining transferring base plate; a vacuum absorbing plate which is used for absorbing and fixing a polarizer is lined at the bottom of the lining transferring base plate; a high-speed camera is arranged on the lateral side of a vacuum absorbing base fixed by the lining transferring base plate. The lining machine for the mobile phone polarizer with reliable alignment has the advantages of reasonable lining action and high lining quality.

The invention discloses a cleaning method for a condensation device of a clothes dryer. The condensation device comprises an air channel, a water supply device connected with the air channel, and a fan enabling air from a drying bucket to flow through the air channel. The air channel is provided with a flow-distributing device enabling air flowing through the air channel to generate turbulent flows. The cleaning method comprises following the step of operating a cleaning process. The cleaning process comprises following steps: continuously supplying water to the air channel through the water supply device; controlling the device to operate the fan, controlling operating parameters of the fan such that the rotating speed of the fan gradually increases, at least to the extent at which a part of water can be lifted in the air at the flow-distributing device and gradually converge, and rolling and agitating water which converges in the air channel in the air channel such that the inner wall of the air channel can be washed. The invention further discloses the clothes dryer realizing the cleaning method.

An oxygen sensor includes a sensing element detecting an oxygen concentration in a measurement gas that flows in a pipe, a cylindrical protector which covers an outside of the sensing element and whose top end portion projects toward an inside of the pipe. An outside diameter D of the protector and a projection amount L of the protector inside the pipe are set so that a ratio of the product of the outside diameter D and the projection amount L (D×L) to a cross-sectional area S of a flow passage of the pipe becomes substantially smaller than or equal to 2.5%.

An improved water management system with improved airflow distribution for counterflow evaporative heat exchangers is provided. Such heat exchangers include open cooling towers, closed circuit cooling towers, and evaporative condensers. The improved water management system eliminates water splash out and the noise associated with water splashing. Further when the fan assemblies are located below the evaporative heat exchanger, the improved water management system keeps the fans dry and prevents freezing in subzero climates.

An intake duct for an internal combustion engine includes a cylindrical duct main body. The duct main body includes an inner layer and an air-impermeable sheet. The inner layer is made of an air-permeable first fiber molding and constitutes the inner circumferential surface of the duct main body. The air-impermeable sheet is fixed to the outer circumferential surface of the inner layer. The weightper unit area of the sheet is 15 to 100 g / m2.

The invention relates to a high-efficiency mesh channel hierarchical air filtering structure which is composed of a first level filtering structure, a second level filtering structure, a third level filtering structure and a fourth level filtering structure in sequence in series. Each level filtering structure is formed by multipled regular triangular prism channel filtering units, wherein the regular triangular prism channel filtering units are formed by planar filtering materials I and zigzag folded filtering materials II in an alternate and overlying mode. Equilateral triangular partition plates are arranged at the same intervals in each regular triangular prism channel filtering unit. The partition plates in adjacent regular triangular prism channel filtering units are arranged in a staggered mode, so that the fact that airflow flows in a staggered mode to pass through regular triangular prism side filtering materials is guaranteed, the dwell time of the airflow in a structural unit is prolonged, an effective filtration area is increased, and trapping efficiency is improved. According to the high-efficiency mesh channel hierarchical air filtering structure, a hierarchical series design, along the direction of the airflow, is adopted, each level structure is made of different filtering materials, and therefore classified trapping of various particulate matters and gaseous pollutants in the airflow can be achieved.

The invention discloses a fluid guide frame assembly used on a transportation tool dust removal device, and belongs to the technical field of dust removal. The fluid guide frame assembly comprises aninner frame and a mounting plate, and a middle lower flow guide plate, an air inlet lower flow guide plate and an air outlet lower flow guide plate are arranged in the inner frame; the middle lower flow guide plate divides the inner frame into two ventilation areas, one ventilation area is an air inlet area, and the other ventilation area is an air outlet area; and a middle upper flow guide plate,an air inlet upper flow guide plate and an air outlet upper flow guide plate are fixedly arranged above the middle lower flow guide plate, the air inlet lower flow guide plate and the air outlet lower flow guide plate correspondingly. According to the fluid guide frame assembly used on the transportation tool dust removal device, when a high-speed motor train unit operates, strong reverse airflowis generated at an air inlet of a skirt plate so that floating objects and the air inlet airflow are separated automatically, and the separated floating objects are discharged and returned to the atmosphere under the wrapping action by airflow of a main ventilation channel; and meanwhile, under the action of the flow guide surfaces of the flow guide plates, the air pressure of a filter screen isincreased, a high-pressure area is formed, and active air supply to an equipment cabin is realized.

A fuel supplying apparatus is disclosed that suppresses intrusion of oil mist into a negative pressure introducing inlet of an automatic cock and that, thereby, improves the degree of freedom of disposition. The negative pressure introducing inlet of the automatic cock is connected to a crankcase through a negative pressure communication path. The automatic cock is opened by a negative pressure generated in the crankcase and, thereby, a fuel supply path is opened that is for supplying fuel from a fuel tank to an internal combustion engine. The negative pressure communication path communicates with the air cleaner through a purge path that branches from the negative pressure communication path at a halfway point of the negative pressure communication path. The point at which the purge path branches from the negative pressure communication path is set to be at the lowest position of the negative pressure communication path to be able to collect the oil mist intruding from the crankcase.

Improved water management systems which deflect or collect evaporative liquid exiting counterflow heat exchangers and improve airflow distribution are provided. Such heat exchangers include open cooling towers, closed circuit cooling towers, and evaporative condensers. The improved water management systems eliminate water splash out and the noise associated with water splashing. Further, when the fan assemblies are located below the evaporative heat exchanger, the improved water management systems keep the fans dry and prevent freezing in subzero climates.

An acoustic fiber silencer for a motor vehicle includes a first sound absorbing layer and a second sound insulating layer. The layers are formed of lightweight fibrous material, and the sound insulating layer is quilted. The acoustic fiber silencer includes a frame to which the sound absorbing and sound insulating layers are secured. The frame provides structural support and shape to the sound absorbing and sound insulating layers. The acoustic fiber silencer is lightweight while maintaining excellent noise attenuation properties.

The invention discloses an engine exhaust system, an engine and a vehicle. The engine exhaust system comprises a silencing cavity, and a first pipeline, a second pipeline and a third pipeline providedwith reversing pieces; one end of the second pipeline and one end of the third pipeline both communicate with the silencing cavity, and the other ends are both connected with the reversing pieces; the second pipeline is longer than the third pipeline; and the length sum of the second pipeline and the first pipeline meets the following conditions: waste gas exhausted by an exhaust door generates resonance with exhaust pressure reflecting waves in an outlet of the second pipeline and exhaust waves at the closing moment of the exhaust door. The exhaust system improves low-speed torque of the engine, meanwhile, improves the dynamic property of the engine in high-speed phase, and reduces the exhaust noise.

The invention discloses an air curtain range hood. The air curtain range hood comprises an air curtain device and a gas condition acquiring device, wherein the air curtain device is used for forming an air curtain and comprises an impurity removing unit for purifying gas in an air duct; and the gas condition acquiring device controls a working state of the impurity removing unit and / or prompts thegas condition of the air duct and / or prompts an operation suggestion according to the gas condition in the air duct of the air curtain range hood. According to the air curtain range hood, the turning-on condition of the impurity removing unit is improved, the impurity removing unit is turned on only when needed, and the user experience is improved.

The invention discloses an air curtain range hood, which includes an air curtain device and a gas condition acquisition device. The air curtain device is used for forming an air curtain, and includesan impurity removal unit for purifying gas in an air duct of the air curtain of the air curtain device, and the gas condition acquisition device is used for obtaining the surrounding environment and / or equipment internal gas conditions, is connected with the air curtain device, and controls a working state of the impurity removal unit and / or prompts obtained results and / or prompts operation suggestions according to the results obtained by the gas condition acquisition device. According to the introduced air curtain range hood, air curtain airflow generated by the air curtain device is subjected to impurity removal, the quality of the air curtain airflow is ensured, and the user experience is improved.

The invention discloses a winter anti-freezing and wind energy recovery system for an indirect air cooling power station. The winter anti-freezing and wind energy recovery system for the indirect air cooling power station comprises a natural ventilation indirect air cooling tower and an air cooling radiator, the air cooling radiator is positioned at a bottom air inlet of the natural ventilation indirect air cooling tower, and the winter anti-freezing and wind energy recovery system for the indirect air cooling power station further comprises a vertical shaft wind generating set and a generating set support column; and the generator set support column is located at the center position in the natural ventilation indirect air cooling tower, the vertical shaft wind generating set is installed on the upper portion of the generator set support column, and the height of the vertical shaft wind generating set is lower than the top of the natural ventilation indirect air cooling tower and close to the throat portion of the natural ventilation indirect air cooling tower. According to the winter anti-freezing and wind energy recovery system for the indirect air cooling power station, the vertical shaft wind generating set is additionally arranged in the cooling tower to increase the airflow resistance in the cooling tower, so that the air speed of the air inlet of the cooling tower is reduced, the heat exchange amount is reduced, and the anti-freezing purpose of the air cooling radiator is achieved.

The invention discloses an engine exhaust system, an engine and a vehicle. The engine exhaust system comprises a silencing cavity, and a first pipeline, a second pipeline and a third pipeline providedwith reversing pieces; one end of the second pipeline and one end of the third pipeline both communicate with the silencing cavity, and the other ends are both connected with the reversing pieces; the second pipeline is longer than the third pipeline; and the length sum of the second pipeline and the first pipeline meets the following conditions: waste gas exhausted by an exhaust door generates resonance with exhaust pressure reflecting waves in an outlet of the second pipeline and exhaust waves at the closing moment of the exhaust door. The exhaust system improves low-speed torque of the engine, meanwhile, improves the dynamic property of the engine in high-speed phase, and reduces the exhaust noise.