74results about How to "Inhibition of reflux" patented technology

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 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.

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.

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.

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.

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.

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.

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 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 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.

The invention discloses an organic compound and an organic electroluminescent device thereof. The organic compound is shown as a formula I, wherein X is oxygen or sulfur; a1 and A2 are respectively and independently selected from hydrogen, alkyl with 1 to 10 carbon atoms, aryl with 6 to 20 carbon atoms or heteroaryl with 5 to 20 carbon atoms; r1 and R2 are respectively and independently selected from carbazolyl containing a substituent group or not containing a substituent group, triazinyl containing a substituent group or not containing a substituent group, pyrimidinyl containing a substituent group or not containing a substituent group, and a group formed by removing one hydrogen from a structure shown in a formula 1 to a formula 9; l1 is absent or selected from an arylene group or a heteroarylene group; l2 is absent or selected from an arylene group or a heteroarylene group. The organic compound provided by the invention has the advantages of low driving voltage and high current efficiency when applied to the organic electroluminescent device.