77results about How to "Inhibition of reflux" patented technology

The invention discloses a polyxeny aircraft additionally provided with a hydrofoil, and belongs to the field of aslant-rotation aircrafts, hydrofoils and ducted propellers. A hydrofoil device is installed at the belly part of the lower end of an aircraft body, and a tail part ducted propeller is installed at the tail part of the upper end of the aircraft body; a set of V-shaped empennages are installed at the two sides of the tail part ducted propeller; a left ducted propeller and a right ducted propeller are installed at the upper ends of the ends of left and right aerofoils respectively; floats are symmetrically installed at the lower ends of the aerofoils. According to the polyxeny aircraft, the ducted propellers are utilized for replacing propellers, the performance of the aircraft canbe improved, the left ducted propeller, the right ducted propeller and the tail part ducted propeller can aslant rotate, and vertical take-off and landing of the aircraft on the water surface and theground can be achieved; meanwhile, the hydrofoil device is adopted, so that the aircraft has the quick and flexible water surface movement capability, and has the features of aslant-rotation aircrafts and foilcrafts.

The invention provides a blowing device system for air-conditioner, which is able to equalize the cooling air amount blown to the indoor space. In the invention, the blowing device system for air-conditioner includes an air-conditioner (21), an air-supply chamber (23), a plurality of blowing-out devices (30), an air flow measurement part and a blowing-out control part; the air-conditioner (21) inhales the air from an inhalation hole (21a) and blows out the cooling air from a blowing-out hole; the air-supply chamber (23) is formed under the ground and ventilates the air-conditioner (21), in the meantime, the cooling air is blown out to the indoor space (15) through a plurality of blowing-out holes (11a) formed on the floor; the plurality of blowing-out devices (30) inhale the cooling air in the air-supply chamber (23) and blows out to the indoor space (15); the air flow measurement part measures static pressure or wind speed of the cooling air within the air-supply chamber (23); the blowing-out control part, in accordance with the output of the air flow measurement part, enables the blowing-out devices near a stated position within the air-supply chamber to operate when the static pressure or wind speed of the cooling air at the stated position within the air-supply chamber is less than or equal to the limit value, so that the cooling air within the air-supply chamber is blown to the indoor space.

The present invention is concerned with an axial-flow or mixed-flow inducer (3) which is disposed upstream of a main impeller (2) for improving the suction capability of a pump such as a turbopump. In the inducer (3), a blade angle (βbt) from a tip (T1) to a hub (H1) at a blade leading edge (31) is substantially the same as an inlet flow angle (β1−t) at a designed flow rate.

The invention provides a disposable absorbent article including an absorbent mat between a liquid-permeable top sheet and a liquid-impermeable back sheet. The absorbent mat includes a sheet-shaped water-absorbent layer that contains a water-absorbent resin powder but that does not contain pulp fibers; and a fiber assembly layer that contains a water-absorbent resin powder and pulp fibers in this order from a top sheet side. The sheet-shaped water-absorbent layer includes a plurality of water-absorbent resin presence regions in each of which the water-absorbent resin powder is wrapped; and a plurality of water-absorbent resin powder absence regions each being formed between the two adjacent water-absorbent resin powder presence regions.

The invention relates to a control method for an overhead signal based on checkpoint data. The method comprises the following steps: 1) acquiring an overhead index change rule, 1.1) calculating the change trend of the overhead blocking index and 1.2) calculating the change trend of the resource required by the ramp; 2) calculating and treating the checkpoint data; 3) calculating the passing requirement of the upper ramp, wherein the ramp passing requirement is the sum with each ground road passing requirement adjacent to the upper ramp and each ground road passing requirement is the product of the total amount of the ground road vehicles multiplying by the proportion of the resource required by the ramp calculated in the step 2); 4) estimating the queuing length: the queuing length is the quantity of the vehicles waiting for entering into the overhead on the upper ramp port; 5) calculating the control rate of the upper ramp; 6) calculating the green ratio of the signal lamp of the ramp. The control method for the overhead signal based on the checkpoint data, provided by the invention, has the advantages of high calculation speed, higher robustness, lower cost, higher control flexibility and high instantaneity.

A centrifugal fan includes an impeller arranged to rotate about a rotation axis, a motor arranged to rotate the impeller, and a case arranged to accommodate the impeller and the motor. The case includes an upper case, a lower case, and a joint portion at which the upper and lower cases are fixed to each other. An interior of the case includes a first annular space positioned radially outward of the motor. The first annular space includes a second annular space defined by a portion of a space defined by an annularly continuous collection of imaginary circles each of whose diameter is the shortest distance between an inner circumferential edge of the joint portion and a radially outermost circumferential portion of a motor accommodating portion and each of which touches the inner circumferential edge of the joint portion.

The present invention provides a tableware washing and drying machine, comprising a housing, a cleaning groove arranged in the housing to accommodate washings, a heating device for heating water in the groove, air discharge openings for discharging air in the groove outsides the housing, a blower device for supplying air to the groove via a first path, a second path connecting the openings and thegroove, a third path branched from the first path and communicating with the second path, a wind volume distributing device arranged at branch section of the third path branched form the first path,the wind volume distributing device stocking the first path and opening the third path when the wind pressure is less than or equal to prescribed wind pressure.

The invention provides a substrate processing apparatus, a nozzle and a substrate processing method, and provides the technology that a substrate where a pre-processing fluid is adhered is uniformly processed through a processing fluid. The substrate processing apparatus conveys a substrate where a developing solution is adhered from the upstream side of a conveying direction (the third direction) to a downstream side through a plurality of conveying rollers. An air nozzle supplies curtain type air to the surface of the substrate conveyed to the downstream side, so as to remove the developing solution accumulated on the substrate. A washing nozzle with a fluid is disposed at the downstream side of the air nozzle so as to form a vent, below the lower surface, used for spraying washing fluid. The washing fluid sprayed from the washing nozzle with the fluid and towards the substrate contacts with the substrate and the lower surface, and spreads in gaps between the substrate and the lower surface. A liquid cut nozzle is disposed at the downstream side of the washing nozzle with the fluid, and can spay film type washing fluid to the substrate.

An intake duct for a vehicle having an inlet port formed so that the open side faces obliquely upward. The intake duct includes an inlet part formed in a flat shape expanding in the lateral direction crossing an air stream direction and a deflector provided in an air stream passage of the inlet part and extending in the left-and-right direction of the air stream passage. The intake duct further includes a first support member, which is provided between the deflector and the lower wall portion of the inlet part, and a second support member, which is provided between the deflector and the upperwall portion of the inlet part.

This work vehicle is provided with: a bonnet 6 that covers an engine room provided in the front portion of a traveling machine 3; an engine 5 that serves as a drive source; a radiator 235 that supplies cooling water to the engine 5; an air cleaner 221 that takes in outside air and supplies said air to the engine 221; and a condenser 275 that cools a refrigerant. The air cleaner 221 and condenser 275 are disposed in front of the radiator 235 so as to be one above the other, and the condenser 275 is configured to be withdrawable in a left-right direction.

To provide a vacuum pump which suppresses the penetration of foreign matter such as rust or particles attributable to a process gas into a semiconductor wafer manufacturing process, and a flexible cover and a rotor for use in the vacuum pump. [Solution] A vacuum pump 1 is provided with: a casing 10 having a gas intake port 12a and a gas exhaust port 11a; and a rotor 20 which has a recessed portion29 opening toward the gas intake port 12a and which is fastened to a rotor shaft 21 by means of bolts 25 disposed in the recessed portion 29. In the recessed portion 29 is provided a flexible cover 80 which deforms elastically in a convex shape toward the recessed portion 29 and covers the recessed portion 29. An outer circumferential portion 80a of the flexible cover 80 is supported on an end surface 20a of the rotor 20 that faces the gas intake port 12a, and a central portion 80b thereof is sunk into the recessed portion 29 of the rotor 20.

This invention provides an air conditioner suppressing deterioration of heating capacity by suppressing radiation from a refrigerant of an outdoor heat exchanger to outside air when an outside air temperature is low during heating operation. When the the temperature of the outside air is lower than a set temperature during the heating operation, valve closing operation of closing an opening and closing valve 71 is carried out by a control means 75. Consequently, inflow of the refrigerant from an upstream side into the outdoor heat exchanger 14 can be suppressed. And a reverse flow of the refrigerant from a junction 19h side of a bypass passage 19 to an outdoor heat exchanger 14 side is prevented by a check valve 72. Accordingly, deterioration of heating efficiency due to the inflow of the refrigerant into the outdoor heat exchanger 14 during low temperature heating can be suppressed.

The present invention provides a film stretching device and a method thereof. In the invention, a clamp (5) which moves along each outlet path (11d,12d) of each guide rail (11,12) is accommodated in an outlet chamber (45), and a clamp (5) which moves along each inlet path (11e,12e) is accommodated in an inlet chamber (46). The outlet chamber (45) and the inlet chamber (46) are provided through a mutually airtight mode. The cooling air which enters the inlet chamber for cooling the clamp is exhausted to one side of a pipe from an air outlet (54c) formed on the pipe. An upper exhaust channel (62) which exhausts the air in the outlet chamber to one side of an outer cover (61) is provided among an upper cover (61a), the outlet chamber and the inlet chamber. A lower exhaust channel which exhausts the air in the outlet path to one side of the outer cover is provided among a lower cover, the outlet chamber and the inlet chamber.

Disclosed is a piston cooling device wherein the cooling efficiency of a piston is improved by oil injected from an oil jet and supplied to a cooling passage provided in the piston, and the amount of cooling oil is reduced when an internal combustion engine is operated at maximum output. The piston cooling device is provided with a piston (20) for an internal combustion engine, in which a circumferential passage (50) and a cooling passage (C) having an inlet passage (30) and an outlet passage (40) are provided, and an oil jet (90) for injecting oil from an injection port (94) to the inlet passage (30). The oil jet (90) injects oil at every stroke of the piston (20) so that a two-phase plug flow composed of gas and oil is formed in the cooling passage (C) at least when an internal combustion engine (E) is operated at maximum output. The injection speed of oil at the injection port (94) is not higher than the maximum speed of the piston (20) when the internal combustion engine is operated at maximum output.

The present invention provides an automatic warehouse and a method for supplying clean air to the automatic warehouse. The position and speed of stacker crane, and the position and speed of stacker crane are input into a clean room controller for correcting the feed amount and / or discharge amount of clean air around the stacker crane. Thereby the pollution of stored article caused by the running air current of stacker crane can be prevented.

The invention provides a casing treatment device for reducing stalling and surging of an air compressor. The casing treatment device comprises a casing and a space ring. The casing comprises an air inlet shell and an impeller. An annular flow division groove is fixedly formed in the position, opposite to the side wall of the air inlet shell, of the front side of the front impeller edge of the impeller. The annular flow division groove is provided with an opening facing the interior of the air inlet shell. The space ring is in a barrel shape and is fixed to the inner side wall of the air inlet shell and located at the opening of the annular flow division groove. According to the casing treatment device for reducing stalling and surging of the air compressor, the space ring is adopted for automatically separating main flow and casing treatment inner flow, the casing treatment inner flow is guided to the impeller tip direction and the axial inflow direction, and therefore the mixing loss of the main flow and the casing treatment inner flow is reduced, and backflow or counterflow generated by the impeller tip area is suppressed more effectively; and therefore stalling and surging are reduced, and under the condition of large flow, the influence of the groove on the main flow is smaller than that in a conventional method, and the influence of the groove on efficiency can be reduced.

A combustor comprises a mixing tube for leading in the premixed gas and an annular tube which is communicated with the mixing tube and is arranged with a plurality of flame openings at the inner circumferential surface. The inner side of the annular tube is arranged with a rectifier which allows the passing of the premixed gas and homogenizes the flame distribution at the flame opening, and / or an obstructing body which restrains the backward flow of the premixed gas from the annular tube to the communicating part between the mixing tube and the annular tube.

The invention discloses an anti-reflux motorcycle exhaust device which comprises an air supply pipe, wherein the air outlet of the air supply pipe slanchwise extends into an exhaust pipe, a first bending section is arranged at the part, adjacent to the air outlet, of the air supply pipe, a second bending section is arranged at the part, adjacent to an air inlet, of the air supply pipe, and the corners of the first bending section and the second bending section are less than 90 degrees and face to opposite directions. When overlarge gas pressure occurs in an engine, the structure provided by the invention can effectively avoid the occurrence of supplied air reflux and ensure the smooth secondary air supply; and as exhaust gas can be supplemented with the fresh air, the temperature of the exhaust gas can be lowered, and the air-fuel ratio of the exhaust gas can recover to an interval of high conversion efficiency of a catalyst, thus the conversion efficiency of the exhaust gas can be improved.

A cross-flow blower (30) provided with a fan rotor (31) and a housing (32), wherein two sidewall parts (38) disposed on both ends in the axial direction of the fan rotor (31) are formed in such a manner that a blowout flow passage (F), which is defined by a first extension wall part (36b) continuing from a tongue part (36a) of the housing (32) to extend up to a blowout port (32b), a second extension wall part (37b) facing therewith, and the two sidewall parts (38), has a constricted part (70) where the cross-sectional area of the flow passage becomes narrower from the upstream side toward thedownstream side by the cross-sectional shape of the flow passage changing from a rectangular shape to a trapezoidal shape in which the width on the second extension wall part (37b) side is shorter than the width on the first extension wall part (36b) side.

A filter unit, a method for setting the filter unit, and a filter device, on the filter unit (1), on a bottomed cylindrical casing (2) that is immersed in a water storage tank or a water storage tank that guides raw water It has an introduction port (2A) for introducing raw water in a water storage tank or the like into the housing (2), an activated carbon supply mechanism (5) for adding activated carbon to the introduced raw water, and a mechanism for stirring and adding activated carbon in the housing (2). Stirring mechanism (4) for raw water, filter element (3) for filtering raw water, backflow suppressing mechanism (6) for suppressing the backflow of raw water in the casing (2) to the guide inlet (2A) and discharge into the water storage tank, etc., and the discharge casing The discharge mechanism (7) of the raw water in the body (2). When filtering raw water with activated carbon added through a filter module made of a hollow fiber membrane, etc., it is possible to prevent the increase in the space of the entire filter device including the water storage tank, and to reduce the amount of activated carbon added and reduce costs due to effective use. .

To suppress backflow of a compressed air stream in a weft insertion nozzle of a weft insertion apparatus utilizing the compressed air stream. The compressed air stream is passed from a first annular chamber (15) through a straightening passage (16) and a compressed air stream passage (28) and jetted from a first jetting passage (29) into a joining passage (25). The compressed air stream in the first annular chamber (15) is made to inflow even from inlets (31) of second jetting passages (30) and jetted in a state of low pressure loss from the second jetting passages (30) in the weft insertion direction into a weft yarn passage (12). A weft yarn (5) is transported through the interior of the weft yarn passage (12) by driving force of the compressed air stream jetted from the second jetting passages (30). The compressed air stream jetted from the second jetting passages (30) drives the compressed air stream jetted from the first jetting passage (29) in the weft insertion direction in the joining passage (25) and acts as force for suppressing the backflow. Thereby, the driving force in the weft insertion direction can be increased.

An exhaust gas guiding device includes an exhaust passageway, an exhaust pipe and an exhaust cover. The exhaust passageway is formed in a bonnet of the construction machine to connect an engine room with an exterior of the construction machine. The exhaust pipe is connected to the exhaust passageway. The exhaust cover is installed at the exhaust passageway to protrude from the bonnet to guide theexhaust gas to the exterior. The exhaust cover having a cylindrical shape connected to the exhaust passageway includes a cover body and an exhaust portion. The exhaust portion is slantly connected tothe cover body to guide the exhaust gas in an extending direction of the exhaust portion. The exhaust pipe is positioned adjacent to an inner surface of the cover body. The exhaust pipe has a centralaxis away from a central axis of the exhaust cover. Therefore, the exhaust can be concentrated to the oblique surface of the discharging part of the exhaust cover later than other positions for beingdischarged, thereby increasing a propelling force of the exhaust.

The invention discloses a sine-wave-shaped micro-channel heat exchanger with micro-cavity structures. The sine-wave-shaped micro-channel heat exchanger comprises a cover plate and a micro-channel heatsink, the cover plate and the micro-channel heat sink are vertically bonded together, a plurality of micro channels arranged in parallel at equal intervals are arranged on the micro-channel heat sink, the micro channels are sine-wave-shaped in the direction of liquid flow, cross sections of the micro channels are inverted triangles, micro rib walls which are sine-wave-shaped in the direction of the liquid flow are formed between the adjacent micro channels, cross sections of the micro rib walls are trapezoidal, the micro-cavity structures are arranged on the side wall surfaces and the bottomsurfaces of the micro-channels, the sine-wave-shaped micro channels with triangular cross-sections have secondary flows, the disturbance is enhanced, a thermal boundary layer is destroyed, the heat transfer is enhanced, coolant is stored at the bottom of a micro channel structure, the local dryout phenomenon can be effectively delayed, the backflow phenomenon is inhibited, the effect of boiling instability is reduced, the micro-cavity structures at the side wall surfaces and bottoms of the micro channels greatly increases heat transfer area, increases surface roughness and provides sufficientvaporization core for bubble nucleation, and the heat exchange is further enhanced.

The invention discloses a neurosurgery drainage device and relates to the field of neurosurgery. A liquid feeding body and a liquid discharging body which are independent are arranged on the neurosurgery drainage device and controlled through a three-way valve, so that injection liquid feeding and drainage liquid discharging are controlled independently. A first air pressure adjusting device is arranged on the liquid feeding body, and a second air pressure adjusting device is arranged on the liquid discharging body, so that air pressure of a first cavity and a second cavity can be adjusted and controlled effectively, accordingly, the liquid feeding flow velocity and the liquid discharging flow velocity are controlled stably, and various accidents in the drainage process are avoided. Therefore, according to the neurosurgery drainage device and system, the problem that unstable drainage in neurosurgery clinic treatment is well solved, reverse flowing and siphon phenomena in the drainage process are restrained, normal and orderly conducting of the drainage process is guaranteed, and important application and popularization value is achieved.

The invention discloses a fan blade. The blade includes several cutouts. The cutouts penetrate the front and rear surfaces of the blade. The cutout closest to the front edge of the fan blade is located at a distance of 1 / 10 arc length from the front edge of the fan blade and a distance from the tail edge of the fan blade. The nearest incision is located 1 / 10 of the arc length from the trailing edge of the fan blade, between the two rows of incisions 1 / 10 of the arc length from the leading edge and the trailing edge of the fan blade, several incisions are arranged in sequence, the distance between the two incisions is 10mm, and the lower end of the incision It is closed at 8mm away from the lower edge of the blade, and the upper end of the slit is opened at the upper edge of the blade; the inclination angle of the slit facing the incoming wind is 65°, and the slit is 3mm wide. The upper edge of the fan blade is zigzag, with a tooth width of 5mm and a pitch of 6mm. By changing the design of the fan blade and the upper edge, the penetrating cut on the blade and the zigzag design on the upper edge affect the static characteristics of the fan and the flow characteristics of the surrounding air. Due to the design of the slit, the static pressure distribution on the blade is changed, and the backflow at the leading edge and tip of the corresponding slit blade is suppressed and reduced, thereby suppressing the occurrence of vortex shedding and achieving the effect of noise reduction.

The invention provides an organic compound as shown in a formula I. The invention also provides an application of the organic compound in an electroluminescent device. The organic compound provided by the invention not only can transmit electrons, but also can transmit holes, has a relatively high carrier transmission rate, and can balance the migration rates of the electrons and the holes, so that a relatively wide carrier recombination region is obtained, and the luminous efficiency of the device is improved.

The invention discloses bone-strengthening and blood-circulation-promoting lavipeditum powder, which is prepared from the following raw materials in parts by weight: 10 to 15 parts of rhizoma atractylodis, 10 to 15 parts of spina gleditsiae, 15 to 18 parts of frankincense, 15 to 18 parts of myrrh, 15 to 18 parts of raw leeches, 20 to 25 parts of saffron crocus, 20 to 25 parts of radix angelicae pubescentis, 20 to 25 parts of fruits of Chinese magnoliavine, 20 to 25 parts of rhizoma chuanxiong, 20 to 25 parts of radix salviae miltiorrhizae, 30 to 35 parts of fructus psoraleae and 30 to 35 parts of dark plum. The product starts from the disease roots; various kinds of medicine are used for realizing the comprehensive conditioning on a human body circulation system; the effects of eliminating accumulated toxin, relieving muscle spasm, dispelling cold, stopping pain, clearing damp and promoting diuresis are achieved; the product has the function of enhancing the circulation, and can achieve the functions of inhibiting the venous blood reverse flow, clearing away toxin and congestion blood and recovering the circulation; the product can improve the body immunity and comprehensively improve the micro circulation metabolism in the body; the product has the advantages that the medicine side effect is small; the local absorption is fast; the harmful substances in the circulation can be effectively eliminated; the lower limb pathogenesis is fundamentally inverted; the goal of heeling is finally achieved.

The invention discloses a pipeline pump with an inlet flow guide structure. The pipeline pump comprises a water inlet runner, an elbow-shaped water inlet elbow, a centrifugal impeller, a volute and a water outlet runner, and induction blades are arranged in the elbow-shaped water inlet elbow; the thickness of the induction blades is 0.02-0.05 time of the inner diameter of an outlet of the water inlet runner; the inlet edge of each induction blade is circular, and an outlet of each induction blade is arc-shaped; and the bending direction of the induction blades is the same as that of the elbow-shaped water inlet elbow. The pipeline pump is simple in structure and convenient to implement, extra external mechanisms do not need to be additionally arranged, the effect of improving the comprehensive performance of the pipeline pump is high, and high popularization value is achieved.

The invention discloses a double-side inclined multi-roller backflow shoe and cylindrical backflow rail system which comprises a backflow shoe and a cylindrical backflow rail, a supporting plate of the backflow shoe is connected with a roller support through a shock absorber, and four rollers are symmetrically arranged on the inclined face of the bottom of the roller support. The roller is in rolling contact with the cylindrical return rail to form working grounding. The current situation of motor train unit rail backflow can be effectively improved, electrochemical corrosion of stray currentto steel rails and interference to other electrical equipment are restrained, and the lightweight design meets the technical standard of backflow voltage; and meanwhile, more materials are not consumed, and the backflow reliability can be guaranteed through damping measures.

By providing a demister unit and EGR system with a casing (51), which has a hollow shape and is provided with an exhaust gas inlet portion (61) and outlet portion (62), a demister body (52), which removes mist from exhaust gas in the casing (51), a drain pipe (drain guide portion) (53), which is connected to the bottom of the demister body (52) and guides the mist separated by the demister body (52) downward, and a water storage portion (seal portion) (67), which prevents the exhaust gas from flowing from the drain pipe (53) into the demister body (52), the backflow of water from the drain guide portion to the demister body is suppressed and an improvement in mist removal efficiency is achieved.