54results about How to "Increase discharge pressure" patented technology

A piezoelectric pump having a first opening in a center portion of a pump body, and a second opening apart from the center. An outer peripheral portion of a metal diaphragm is fixed to the pump body, and a piezoelectric element having a size that covers the first opening and does not cover the second opening is bonded to a back center portion of the diaphragm. By applying a voltage near the resonance frequency to the piezoelectric element, a portion of the diaphragm opposing the first opening and a portion of the diaphragm opposing the second opening are bent in opposite directions so that fluid is drawn in from one of the first opening and the second opening and is discharged from the other opening. Such a piezoelectric pump can increase the discharging pressure, and can reliably discharge the fluid even under a condition where the pressure on the discharging side is high.

A device and method for applying adhesive to materials, such as elastic strands, used in the production of nonwoven products. Generally, a nozzle is provided and includes a liquid discharge orifice configured to discharge a bead of liquid adhesive. First and second pattern air discharge orifices are associated with the first liquid discharge orifice to vacillate or oscillate the adhesive bead. First and second cleaning and stabilizing air discharge orifices are also associated with the first liquid discharge orifice. These latter air discharge orifices keep airborne contaminants away from the associated liquid discharge orifice and also stabilize the oscillation of the adhesive bead in a single plane. A method in accordance with the invention includes using the nozzle to dispense a vacillating bead of adhesive onto a strand of material.

A compressor includes a normally open discharge valve assembly for controlling compressed refrigerant flow from the discharge chamber through the compression members. This controlling of flow results in an increased performance for the compressor by reducing recompression volume and the elimination of reverse rotation at shut down. The discharge valve assembly includes a valve seat, a valve plate and a valve stop secured within a recess formed within the compressor with a wave ring retainer. The valve stop and the valve seat include a contoured surface that is engaged by the valve plate when it opens and closes. The contoured surface controls the movement of the valve plate.

The trimmed buckwheat sheller includes one outer barrel serving as the casing, one inner bushing, one bearing seat with one rotating shaft, one movable wheel on the shaft, one upper cover, one fixed wheel fitting the movable wheel. It features the upper cover comprising one inner ring and one outer ring connected through threads for easy interval regulating and trimming. The present invention has the advantages of high regulating precision, simple and fast regulation, high production efficiency and capacity of processing buckwheat in different plumpness.

A rear projector (1) has a closed space (530) including an inside of an upper cabinet (12) and an electric optical device (44), where the electric optical device (44), a sirocco fan (541) located below the electric optical device (44), a duct (542) covering the upper side of the electric optical device (44) and a heat sink (543) attached to the upper cabinet (12) are disposed and an upper cabinet cooling system (600) that cools the interior of the closed space (530) in a circulative manner is provided in the closed space (530), thereby preventing invasion of duct etc. and providing high-quality image.

A rear projector (1) has a closed space (530) including an inside of an upper cabinet (12) and an electric optical device (44), where the electric optical device (44), a sirocco fan (541) located below the electric optical device (44), a duct (542) covering the upper side of the electric optical device (44) and a heat sink (543) attached to the upper cabinet (12) are disposed and an upper cabinet cooling system (600) that cools the interior of the closed space (530) in a circulative manner is provided in the closed space (530), thereby preventing invasion of duct etc. and providing high-quality image.

The present invention provides a part washer for cleansing various parts using cleansing solution, in particular to a part washer, which discharges the high-pressure air to be sprayed to the parts and the solution for cleansing the parts at the state where they are heated by means of heating means and heats the high-pressure air moving at high velocity smoothly, thereby improving cleansing and drying efficiencies in comparison with conventional art.

A chemical liquid supplying apparatus capable of discharging chemical liquid with high accuracy and monitoring a leakage of an incompressible medium from a region between a piston and a cylinder is provided. A pump has a flexible tube for partitioning a pump chamber and a drive chamber, and the incompressible medium is supplied to the drive chamber by the piston reciprocating within a cylinder hole of the cylinder. A first bellows cover for forming a first seal chamber is provided between a large-diameter piston portion and the cylinder, and a second bellows cover for forming a second seal chamber is provided between a small-diameter piston portion and the cylinder. To detect pressure of the incompressible medium enclosed in the seal chambers, a seal-chamber pressure sensor is attached to the cylinder, and a deterioration degree of seal members is determined by detecting the pressure.

A centrifugal fan (50) is provided around the light source of the projector and an exhaust duct (51) is connected to the centrifugal fan with at least one of bent portion (52) for bending exhaust stream from the centrifugal fan being formed on the exhaust duct. Since the centrifugal fan for exhausting air can be disposed at a position remote from the exhaust hole, the noise generated from the projector can be reduced even when the size of the cooling fan is increased.

A screen printing apparatus for printing on a board, such as a circuit board, through a screen using a paste prior to surface-mounting electronic components on the board, and more particularly a screen printing apparatus that performs a screen printing while automatically discharging the paste that is accommodated inside the main body.

A hydraulic control device of construction machine is provided with a control valve lying between a hydraulic pump and a hydraulic actuator for opening and closing a meter-in control flow path, and a flow rate control valve lying between a pump discharge line on the upstream side of the above control valve and a tank. The above flow rate control valve receives a pump pressure and a load sensing pressure corresponding to a pressure on the downstream side of the meter-in control flow path as a pilot pressure, and is activated for opening and closing so as to maintain a constant differential pressure therebetween. The above flow rate control valve is maintained in a closed state by a pilot pressure switching valve when the load sensing pressure is low. The above control valve opens a bypass line when the meter-in control flow path is closed.

In order to provide an engine oil supply apparatus including a second oil pump (12) which can draw in and discharge oil quickly regardless of whether or not a first oil pump (11) is driven and which does not need to be large, an engine oil supply apparatus (Y) includes a first oil pump (11) drawing oil through a first oil passage (21) from an oil holder (13) holding oil, a second oil pump (12) connected in series with the first oil pump (11) through a connection oil passage (26) and driven independently of the first oil pump (11), a first supply oil passage (23) for supplying oil to a first circulation section (41) from the first oil pump (11), and a second supply oil passage (24) for supplying oil to a second circulation section (42) from the second oil pump (12). In the engine oil supply apparatus (Y), a first oil reservoir (15) holds oil to be supplied to the second oil pump (12) and is provided independently of the oil holder (13) is provided.

The present invention relates to a device for liquid degassing by means of the swirling or the centrifugal field coupled with the pressure gradient field. This device comprises a cavity. The cavity is furnished with an inlet for liquid gas, an outlet for gas phase and an outlet for gas liquid phase. The outlet for gas phase is inserted into the cavity through the upper surface of the cavity, wherein the depth of the insertion is around 0.1-3 times of the maximum diameter of the cavity. Specifically, the outlet for gas phase is realized through an overflow pipe with the diameter gradually increasing from the bottom to the top. The end of the overflow pipe is further furnished with a bell mouth. The advantages of the present invention are: The present invention designs the structure of an inverted cone shaped outlet for gas phase which is inserted into the cavity of the swirling device. The present invention makes full use of the impact of pressure gradient in the cavity on the solubility of gas in liquid and combines the centrifugal field and the pressure gradient field to remove the gas entrained with liquid while the dissolved gas is removed under the inlet partial pressure.

A centrifugal fan (50) is provided around the light source of the projector and an exhaust duct (51) is connected to the centrifugal fan with at least one of bent portion (52) for bending exhaust stream from the centrifugal fan being formed on the exhaust duct. Since the centrifugal fan for exhausting air can be disposed at a position remote from the exhaust hole, the noise generated from the projector can be reduced even when the size of the cooling fan is increased.

A vehicle hydraulic control device for a rotating electrical machine and associated gear mechanism. Oil passages are configured with relief valves such that a first relief valve discharges oil in a first oil passage when an oil pressure in the first oil passage located downstream of a throttle portion becomes higher than a predetermined first set oil pressure, and a second relief valve allows a part of the second oil passage which is located upstream of the second relief valve to communicate with a part of the second oil passage which is located downstream of the second relief valve when an oil pressure in the second oil passage located upstream of the second relief valve becomes higher than a predetermined second set oil pressure set higher than the first set oil pressure.

A coast stop vehicle for stopping a drive source during vehicle running includes a power transmission means arranged between the drive source and drive wheels, a coast stop control means for executing a coast stop control to stop the drive source when a coast stop condition for stopping the drive source holds during the vehicle running, an electrical oil pump for supplying oil to the power transmission means during the coast stop control, a slip detection means for detecting a slip in the power transmission means during the coast stop control, and an electrical oil pump control means for causing the electrical oil pump to discharge a second discharge pressure higher than a first discharge pressure set before the slip in the power transmission means occurs when the slip occurs in the power transmission means during the coast stop control.

The invention discloses a wind-power air compressor which comprises a wind-power transmission system and an air compressor body. The wind-power transmission system comprises a driving shaft. The air compressor body comprises a box, a driving wheel and an air cylinder, wherein the air cylinder is arranged on the box, the driving wheel is arranged in the box and fixed sleeved on the driving shaft, a closed sliding rail structure is formed on a driving surface of the driving wheel, a functioning end of a piston connecting rod of the air cylinder is restrained by the sliding rail structure of the driving wheel and slides along the sliding rail, and compressed air generated by the air cylinder is transmitted to an air storage room via an air exhaust manifold. A connecting rod guiding mechanism is arranged along the axial direction of the piston connecting rod of the air cylinder and connected with a piston connecting rod roll. Extra load to the air compressor during running can be reduced, compressed air with higher pressure can be output by the air compressor at the same wind speed, stable accelerating operation of the air compressor body is realized, and noise during operation is reduced.

Even if an internal combustion engine is stopped having a lock pin of a vane rotor kept disengaged from a lock recess, subsequent engine starting can instantly move the vane rotor to a desired angular position where the lock member an be engaged with the lock recess. The vane rotor has therein two passage control mechanisms each having a hydraulically actuated valve body. When the valve body is moved to a given position, retarding and advancing hydraulic holes become communicated to each other through an annular groove of the valve body. Due to this ON communication, retarding and advancing operation chambers become communicated, so that reciprocative swing movement of the vane rotor induced by an alternating torque produced at the starting of the engine is effectively made and thus the vane rotor can be quickly turned to the desired angular position for ease of engine starting.

The invention discloses a secondary water supply device, and belongs to the technical field of water supply devices. The secondary water supply device comprises a water storage type pressure stabilizing tank, wherein a backflow main pipe is clamped and connected onto the side end surface of the water storage type pressure stabilizing tank; and a pair of anode water wheels and cathode water wheels is arranged inside the backflow main pipe. Through the conversion and utilization of wind energy and municipal water supply pipe network water power, the comprehensive purification of drinking water can be favorably realized; the long-time and uninterrupted drinking water circulation purification effect can also be achieved; through micro electrolysis sterilization, the microbe propagation process is blocked; through the circulation reciprocating action of a descaling brush on the cathode water wheels, the contact area of the cathode water wheels and the drinking water is effectively ensured; the micro electrolysis sterilization and mite removal effect of the drinking water is improved; the multi-stage automatic pressurization effect of the drinking water can also be realized by using an anode shaft, a cathode shaft, a movable vortex disc and a static vortex disc; and the occurrence of problems of insufficient water pressure and the like during the subsequent solid-liquid separation of the drinking water can be avoided.

Provided are a non-hydrocarbon gas separation device and the like capable of increasing a discharge pressure of a non-hydrocarbon gas to a downstream side while preventing an increase in size of equipment. In the non-hydrocarbon gas separation device, a first separation module (2a) and a second separation module (2b) connected to each other in series are each configured to separate a non-hydrocarbon from a natural gas through use of a separation membrane (20). The non-hydrocarbon gas having been separated from the natural gas is discharged to each of discharge lines (202) and (204). At this time, a pressure of the first separation module (2a) on a discharge line (202) side is higher than a pressure of the second separation module (2b) on a discharge line (204) or (202) side.

A high efficiency and high volume air liquefaction system and method is disclosed wherein the cryogenic air separation plant includes a warm gas turbo-expansion cycle to supply the supplemental refrigeration required to produce liquid products in excess of about 15% of the incoming feed air.

An electromagnetic pump has a frequency converter circuit for driving the electromagnetic pump, wherein the frequency converter circuit comprises an oscillator circuit, a bistable circuit and a push-pull circuit. The oscillator circuit oscillates to transform DC into a single-phase oscillating signal. The bistable circuit splits the single-phase oscillating signal into a N-phase stimulus signal and a S-phase stimulus signal. The push-pull circuit amplifies and transports the N-phase stimulus signal and the S-phase stimulus signal to the electromagnetic pump to make the swing arms of the electromagnetic pump swinging effectively, wherein the swing speed, the swing frequency and the swing amplitude of the swing arms vary with the change of the oscillation frequency of the oscillator circuit. Thereby, the suction pressure and the discharge pressure of the electromagnetic pump could further be adjusted higher or lower, wherein said frequency converter circuit comprises a modulation circuit, which could change the swing speed of the swing arms swinging outwardly or inwardly to further increase or decrease the suction pressure or the discharge pressure.

The invention discloses an eddy current drainage device and a drainer. The eddy current drainage device includes a water inlet end cover, a drainage rotor and a drainage pipe. The drainage rotor includes a rotating drum with two opening ends and eddy current drainage blades disposed in the rotating drum, the rotating drum is rotatably mounted in the drainage pipe and can rotate relative to the drainage pipe, the water inlet end cover is disposed at a water inlet end of the drainage pipe, the water inlet end cover is equipped with a water inlet, and the water inlet is communicated with the rotating drum. According to the eddy current drainage device and the drainer, during water drainage, water flows in from the water inlet and then flows into the drainage pipe through the rotating drum, when water current passes through the drainage rotor in the drainage process, the impulsive force of downflow water current can drive the drainage rotor to rotate, and then eddy current drainage can berealized through the eddy current drainage blades of the drainage rotor so as to make the water current form eddy current automatically, thereby effectively increasing the water drainage pressure, improving the drainage speed, speeding up ponding discharge, and enhancing the drainage efficiency.

A vehicle is provided with a mechanical oil pump (O / P) that is driven by a motor / generator (MG), an electric oil pump (M / O / P) that is driven by a sub-motor (S / M) and a second clutch (CL2) that transmits the drive force of the motor / generator (MG) to left and right drive wheels (LT, RT). When an accelerator pedal is depressed while a brake pedal is still depressed, an integrated controller (10) drives the electric oil pump (M / O / P) before the brake pedal is released, and oil pressure supplied to the second clutch (CL2) is increased.

An electrostatic inkjet head and manufacturing method thereof are disclosed. With an electrostatic inkjet head, comprising a deformable diaphragm comprised in a face of an ink chamber, one or more first protrusions protruding from a face of the diaphragm, a structurally fixed electrode facing the diaphragm, and one or more second protrusions protruding from a face of the electrode towards the diaphragm, wherein the first protrusions and the second protrusions are arranged alternately so that their sides are in proximity with each other, the electrostatic force may be increased regardless of the distance between the diaphragm and the electrode, whereby the maximum displacement is increased by which the diaphragm may be deformed, as well as the ink discharge pressure, to allow the discharge of high-viscosity ink.