43results about How to "Increase pulsation" patented technology

A device, system and method for skin detection are presented. To enable a reliable, accurate and fast detection the proposed device comprises a thermal sensor input for obtaining thermal sensor data of a scene, a light sensor input for obtaining light sensor data of the scene, and an evaluation unit for analyzing the obtained thermal sensor data and the obtained light sensor data and for detecting skin areas within the scene based on said analysis.

A power conversion device includes a power switching circuit that supplies AC voltages generated between switching elements operating as upper arms and switching elements operating as lower arms, and a control circuit that generates and supplies to the driver circuit signals for controlling the switching operation of the switching elements by a PWM method in a first operational region in which frequency of an AC power to be outputted is low, and that generates and supplies to the driver circuit signals for controlling the switching operation of the switching elements at timings based upon the phase of the AC power to be outputted in an operational region in which the frequency of the AC power to be outputted is higher than in the first operational region.

Within a cam ring (8), a rotor having a plurality of vanes (27) is eccentrically disposed. A metering orifice (136) is provided halfway on a discharge passage (135) of pressure fluid discharged from the pump, and a control valve is activated due to a pressure difference between the upstream and downstream sides of the metering orifice (136). A fluid pressure of the first fluid pressure chamber (21) is controlled by activation of the control valve (123). The second fluid pressure chamber (22) is shut off from the control valve (123) to introduce a pressure on the suction side at any time. To return the cam ring (8) in a direction of expanding a pump chamber (11), an internal pressure of the cam ring (8) is applied in the return direction.

The invention relates to a stent vessel for interventional therapy and a dedicated traction tool for implanting the stent vessel into a human body. The stent vessel comprises an artificial or animal vessel and support rings, wherein the support rings in three structures are used for fixation and respectively arranged at the outlet end and the inlet end of the artificial or animal vessel, and in the support rings, a detachable support ring with radial resilience force is further provided. The dedicated traction tool is especially suitable for dragging a Y-shaped stent into circuitous or narrow parts of the human body. The stent vessel provided by the invention is extremely flexible and easy to be implanted into a branch vessel until to the circuitous part. Because the main part and the branch of the stent vessel are integrated, the stent vessel is easy to position and safe and reliable without leakage after being implanted into the human body; and as the structure is simple and the cost is low, stent vessels in various diameters, variable diameters and lengths are be made, and the application range is wide because of no limit to lengths.

A hydraulic system comprising a receiving body with electrohydraulic valve, with at least one hydraulic pump, and with channels for connecting the pump to at least one hydraulic load. A pulsation situation arises as a result of the delivery of a pressure medium by the pump and / or as a result of pressure medium being withdrawn by the load. At least one damping unit is provided, having a plurality of pulsation damping means such as, in particular, a damping chamber, and orifice. The hydraulic system provides a uniform and cost-effective solution for different operating situations and prevents a decrease in comfort. The damping unit has at least one switching means for adjusting the action of said damping unit to a varied pulsation situation by connecting or disconnecting one or more damping means.

The invention provides a linear compressor. The linear compressor comprises a cylinder, a discharge valve, a spring combination body, and a discahrge cover. The cylinder forms a compression space for a refrigerant; a piston which moves along an axial direction in a reciprocating manner and is inserted into the cylinder. The discharge valve is arranged on one side of the cylinder and selectively discharge the coolant in the compressed space of the cylinder. The spring combination body is combined with the discharge valve. The discharge cover has the spring combination body and has a discharge space for the folow of the coolant discharged by the discharge valve. The discharge valve comprises a plurality of covers which are stacked along an axial direction.

Thermal type flow rate meters for measuring the flow rate of intake air of an internal combustion engine of a motor vehicle or the like have encountered a problem of an increase in pulsation errors during high engine speed and high pulsation. Meanwhile, digitally recovering responses has posed a problem in which pulsation performance is liable to become worse, affected by variation in a clock or the like. The sensor is provided with means for transferring a response variation factor to the engine control unit. The engine control unit is provided with logics for automatically determining the variation factor and correcting a response. Means for detecting a backflow occurrence is provided and a parameter for a response recovery is changed before and after a backflow occurrence. The sensor is provided with a selecting means by which a sensor response can be selected and obtained and the engine control unit is provided means for allowing selection of a response.

The invention relates to a method for refuelling a storage container with a pressurised gaseous medium, in particular hydrogen, wherein this medium is introduced into the storage container via a tank supply line, wherein the temperature of the medium upon entry into the storage container and the pressure in the storage container are controlled in such a way that the enthalpy of the medium introduced into the storage container fluctuates within a preset enthalpy range or is constant.

The pulsate fluidizing drying machine includes a drying box, a fluidizing bed, a gas flow distributor, and a transmission unit. It features the fluidizing bed with a vibration unit for suspending inside the box, the bed gradually lowered in the material moving direction and the end connected to the material discharging port; the gas flow distributor approaching to the lower part of the fluidizing bed and comprising a transmission shaft, blades on fixed onto the shaft and a baffling board driven with the transmission unit; the increased guide unit below the gas flow distributor and vibrating unit. The present invention operates on pulsate gas flow distributing technology, is favorable to the heat transfer and heat transfer, and has high drying speed, high heat transferring efficiency, low power consumption, less cavitation damage, channeling, etc and excellent operation performance.

A transmission member that transmits urging force of a helical spring to a valve body is disposed between the valve body and the helical spring. The transmission member changes a direction of an urging force transmitted to the valve body such that the urging force is oblique to a pressure action direction X. Accordingly, when a check valve is in an open state, the valve body is pressed against a side wall and thus vibration of the valve body is inhibited. Further, when the check valve is in a closed state, an angle θ formed by the direction of the urging force transmitted to the valve body and the pressure action direction X is set to be between 8 degrees and 45 degrees. Accordingly, it is possible to simultaneously realize a fluid path opening / closing function and a valve body vibration inhibition function.

A shower water rotating structure includes a main body having a water inlet and water outlet, and a rotating disk, pinion, water inclining support, impeller and rotors arranged top to bottom inside the main body; the water inclining support has inclined water inlet adapted to guide water flow to impact the impeller to rotate the impeller configured with a drive gear adapted to drive the pinion to rotate; the pinion is configured with a guide rod adapted to drive the rotating disk to rotate; the rotating disk is distributed radially with guide grooves for the staged matching with the guide rod; and a lower part of rotating disk is configured with a gear adapted to drive the rotors having an inclined water hole and capable of being rotated in the water outlet of the main body, thereby realize spray having a pulsating rotating water effect.

An oil pump in which pulsation vibration due to the dynamic pressure on the discharge port side can be attenuated. In an oil pump for transporting fluid from a suction port to a discharge port by the rotation of a rotor mounted in a pump casing, a resonator configured from an introduction path and a chamber is formed with respect to a discharge flow channel that communicates with the discharge port in the flow direction of the discharge flow channel. A channel in a direction different to the flow direction of the discharge flow channel is communicatingly formed in the vicinity of the resonator.

The invention discloses a continuous powder lime forced dispersing, uniform mixing and feeding system which comprises a material storage bin used for storing powder lime, and the top of the material storage bin is connected with a powder lime feeding pipe; and the material storage bin is composed of an upper cylinder and a lower cone, and the lower cone is sequentially connected with a feeding machine, a rotational flow premixer and a high-speed jet mixer. According to the invention, powder material lime and carrier medium water are continuously mixed and added in the jet mixer; a stirrer, various adding pumps and storage and mixing tanks are omitted, so that the occupied area, the energy consumption, the investment and the maintenance cost of the equipment are greatly reduced; compared with an existing dissolving and preparing process, the response speed is high; however, no pump participates in the adding process, so that the equipment maintenance cost and the labor intensity of workers are reduced; a dissolving formula is a batch formula, and about one or more hour of preparation time is needed during emergency use; and the jet type is continuous, is suitable for the working condition of quick response, and is low in maintenance cost.

The invention relates to a device for enhancing the pulsing property of supply airflows, which comprises an air-conditioning shell and at least one inclined flow fan, wherein the air-conditioning shell is provided with an air inlet and an air outlet; the air outlet position is provided with a movable shutter mechanism used for regulating an air direction; each inclined flow fan comprises an impeller and a rotating shaft; the impeller can rotate under the blowing of air-conditioning air, and the impeller is arranged on the air outlet region of the air-conditioning shell through the rotating shaft. The device for enhancing the pulsing property of the supply airflows, which is disclosed by the invention, is simple in structure and easy to manufacture and can enhance the pulsing property of the air-conditioning supply airflows, enhance the turbulent intensity of indoor air and enhance the heat comfortable sensation of personnel inside an air-conditioning room.

A shower water rotating structure includes a main body having a water inlet and water outlet, and a rotating disk, pinion, water inclining support, impeller and rotors arranged top to bottom inside the main body; the water inclining support has inclined water inlet adapted to guide water flow to impact the impeller to rotate the impeller configured with a drive gear adapted to drive the pinion to rotate; the pinion is configured with a guide rod adapted to drive the rotating disk to rotate; the rotating disk is distributed radially with guide grooves for the staged matching with the guide rod; and a lower part of rotating disk is configured with a gear adapted to drive the rotors having an inclined water hole and capable of being rotated in the water outlet of the main body, thereby realize spray having a pulsating rotating water effect.

The invention relates to a combustion bed of a Rijke pulse combustion device for gas fuel. The combustion bed is characterized in that a gas inlet pipe is arranged in the center of a distribution cavity, the top end of the gas inlet pipe is tightly attached to an upper distribution plate, and gas outlet holes are formed in the side wall of the gas inlet pipe; pipe holes are evenly formed in the upper distribution plate and a lower distribution plate of the distribution cavity in the circumferential direction, thin combustion pipes are arranged inside the pipe holes in a penetrating mode, and gas inlet holes are formed in the side walls of the thin combustion pipes. The combustion bed is scientific and reasonable in design, and the gas fuel is conveyed into the gas inlet pipe, is distributed for the first time in the gas outlet holes of the gas inlet pipe, enters the distribution cavity, then is conveyed to each part of the distribution cavity through a fuel conveying channel and is distributed for the second time in the thin combustion pipes to achieve the effect of uniform distribution of a bed layer; and compared with common combustion, the combustion bed has the advantages of being uniform in gas distribution, sufficient in combustion, short in combustion flame and good in pulse combustion stability.

The invention discloses an elastic pipe bundle vibration reinforced heat exchange solar cavity heat absorber. The elastic pipe bundle vibration reinforced heat exchange solar cavity heat absorber comprises a secondary light condenser, a pulsating flow generator, a metal cavity, elastic pipe bundles, a glass plate and a guider; the metal cavity is of a cylindrical structure; the secondary light condenser and the glass plate are mounted in a front end opening of the metal cavity; the glass plate is positioned between the metal cavity and the secondary light condenser; a through hole is formed inthe bottom of the metal cavity; the guider is of a hollow structure, and is provided with a through hole in the side wall; the guider is fixed at the bottom of the metal cavity; an inner cavity of the guider communicates with the through hole in the bottom of the metal cavity; multiple elastic pipe bundles are welded at the bottom of the metal cavity; and the pulsating flow generator is mounted on the front end side wall of the metal cavity. Through the pulsating flow generator, the multiple elastic pipe bundles are vibrated, so that the heat exchange performance can be improved; and the problem of working medium leakage caused by high-temperature hot spot ablation of a traditional heat absorber can be solved, so that the working life and the reliability are greatly improved.

An oil pump in which pulsation vibration due to the dynamic pressure on the discharge port side can be attenuated. In an oil pump for transporting fluid from a suction port to a discharge port by the rotation of a rotor mounted in a pump casing, a resonator configured from an introduction path and a chamber is formed with respect to a discharge flow channel that communicates with the discharge port in the flow direction of the discharge flow channel. A channel in a direction different to the flow direction of the discharge flow channel is communicatingly formed in the vicinity of the resonator.

A system for mechanical stimulation of nasal tissues of a patient comprises a catheter assembly connected to a fluid flow generator. The catheter assembly comprises a generally oblong inflatable catheter defining at least one catheter volume and the catheter is configured to assume a shape suitable for insertion into a nasal cavity and to assume a shape suitable for stimulating a nasal tissue. The catheter assembly also comprises a tube part comprising at least one lumen configured to establish fluid flow connection between said fluid flow generator and catheter. Preferably, the catheter assembly comprises at least one vent for releasing fluid or permitting fluid to escape from the generated fluid flow. The fluid flow generator of previous aspects of the invention is configured to generate at least one of a smooth continuous flow, an oscillating flow and a pulsating flow.

The invention discloses a heat dissipation method for a friction surface of a wet clutch of an automobile gear box. The heat dissipation method is characterized in that cooling oil flows in through a flow-in port along the external diameter of a driven disk and then flows out from an oil flow-out port along the internal diameter of the driven disk through a cooling oil tank; the cooling oil rollsand flows in the cooling oil tank to be mixed fully so as to dissipate heat; the cooling water tank consists of a plurality of grid-shaped oil tanks connected in series; the grid-shaped oil tanks arealternately arranged with higher left and lower right or with lower left and higher right in an interlocking way along the radial direction; and the radial direction refers to the radius direction ofthe driven disk. The method has the advantages that: strong partial turbulent flow is produced in a shear layer of the oil flow at the connecting necking of two adjacent grid-shaped oil tanks so as to enhance the momentum exchange and the energy exchange of the oil flow; the reverse sliding of a driving disk and the driven disk on the friction surface produces the annular flow vertical to the flowing direction of the oil tank, so that the oil at a lower temperature constantly rolls to the friction boundary so as to increase the heat transfer temperature difference; and the high and low alternate arrangement of the cooling oil tanks and the depth variation roll the oil flow and enhance the pulsation of the main flow so as to improve the heat transfer effect.

A system for mechanical stimulation of nasal tissues of a patient comprises a catheter assembly connected to a fluid flow generator. The catheter assembly comprises a generally oblong inflatable catheter defining at least one catheter volume and the catheter is configured to assume a shape suitable for insertion into a nasal cavity and to assume a shape suitable for stimulating a nasal tissue. The catheter assembly also comprises a tube part comprising at least one lumen configured to establish fluid flow connection between said fluid flow generator and catheter. Preferably, the catheter assembly comprises at least one vent for releasing fluid or permitting fluid to escape from the generated fluid flow. The fluid flow generator of previous aspects of the invention is configured to generate at least one of a smooth continuous flow, an oscillating flow and a pulsating flow.

The pulsate fluidizing drying machine includes a drying box, a fluidizing bed, a gas flow distributor, and a transmission unit. It features the fluidizing bed with a vibration unit for suspending inside the box, the bed gradually lowered in the material moving direction and the end connected to the material discharging port; the gas flow distributor approaching to the lower part of the fluidizing bed and comprising a transmission shaft, blades on fixed onto the shaft and a baffling board driven with the transmission unit; the increased guide unit below the gas flow distributor and vibrating unit. The present invention operates on pulsate gas flow distributing technology, is favorable to the heat transfer and heat transfer, and has high drying speed, high heat transferring efficiency, low power consumption, less cavitation damage, channeling, etc and excellent operation performance.

An implantable frame includes a plurality of corner structures configured to reduce pressure on a vessel wall and define a pulsatility-enhancing window of the implantable frame. The corner structure may comprise a plurality of adjacent longitudinal struts extending in the longitudinal direction of the vessel wall when placed to shape the vessel wall into a substantially polygonal cross-section and distribute the pressure load of the corner structure between the plurality of adjacent longitudinal struts to improve biocompatibility. The corner configuration also allows for increased shaping of the vessel wall and can provide stretching of the vessel wall to enhance the pulsatility of the vessel wall.

The invention discloses a manual-intervention-type pulsation water injection device. An underground pulsation water injection device comprising a water injection main channel and a pulsation water injection channel is connected in a conventional water injection process pipe string, the water injection main channel and the conventional water injection process pipe string are concentric, the pulsation water injection channel is an energy-storage and high-pressure water-injection channel, and the interior of the pulsation water injection channel is sequentially provided with a pressurization mechanism, an energy-storage mechanism and a pulse control valve from top to bottom. The pulsation water injection method comprises that frequency adjustment of pulsation water injection or closure of pulsation water injection are achieved by placing different blanking plugs, when the blanking plugs are fished out, pulsation water injection is completely started, and starting and closure of manual-intervention-type pulsation water injection and pulsation frequency adjustment are achieved, According to the invention, under the condition that the original water injection process pipe string is not changed, low-frequency high-amplitude pulsation energy is provided for each water injection layer in a unified manner, the flow speed of injected water in the stratum is increased, the sweep efficiency of injected water in a low-permeability, thickened-oil and non-homogeneous oil reservoir is improved, stratum obstruction is eliminated, water injection and oil displacement effect is enhanced, and cost decreasing and benefit increasing are achieved.