61results about How to "Reduced ventilation resistance" patented technology

The invention discloses a high temperature resistant flame retardant filter paper used for a diesel filter and a preparation method thereof. The high temperature resistant flame retardant filter paper comprises the following raw materials in parts by weight: 60-70 parts of wood pulp celluloses, 30-40 parts of vinylon fibers, 10-15 parts of glass fibers, 2-5 parts of dolomite dust, 1-3 parts of nanometer titanium dioxide, 2-4 parts of light calcium carbonate, 1-2 parts of modified nano-carbon, 1-2 parts of nanometer titanium oxide, 0.5-0.8 part of ammonium dihydrogen phosphate, 3-4 parts of modified water-soluble phenolic resin emulsion, 2-5 parts of styrene-acrylic emulsion, 0.5-1 part of diethanolamide, 0.5-1 part of silane coupling agent KH550, 0.4-0.8 part of sodium laurylsulfate and 4-6 parts of a wet strength agent. The filter paper, prepared by the invention, has the advantages of good water permeability, large filtering area, small maximum aperture, high filtering precision, strong bursting strength, high temperature resistance and flame resistance, the filtering efficiency is 99.999%, the filter paper has stable performance index at normal temperature and high temperature, and better temperature resistance and filtering effect.

A wind direction adjuster is disclosed in which an inner-side turning axis provided to a louver main body in a protruding manner is axially supported by an inner-side axial support hole provided in a spacer fixed to a bearing portion provided to a housing portion. Moreover, an actuator axis provided to the louver main body in a protruding manner at a position spaced from the inner-side turning axis is inserted into an operation opening provided to the spacer. In addition, a louver moves forward or rearward by pushing the actuator axis by a projecting portion in association with turning of a knob turnable with respect to the bearing portion and the spacer. The louvers can be moved in conjunction with each other with a simple configuration.

The invention discloses an anti-haze antibacterial filtering material. The anti-haze antibacterial filtering material is characterized by comprising flexible base cloth and a composite adhesive whichcoats at least one surface of the flexible base cloth. The manufacturing method of the anti-haze antibacterial filtering material comprises the steps of composite adhesive manufacturing, gluing, drying, slitting and the like. According to the anti-haze antibacterial filtering material and the preparation method thereof of the invention, the flexible base cloth is coated with a layer of trace gluewith adsorption and filtration functions, so that a barrier for blocking pollutant particles, bacteria and viruses is formed, and the inhalation of pollutants such as haze particles and the like and the propagation of bacteria and virus droplets are prevented. The anti-haze antibacterial filtering material can be applied to multiple fields of masks, protective clothing, industrial operation protection and the like.

An intake device for an internal combustion engine has an intake muffler (30) forming an expansion chamber (33) and also has a connection tube (40) having an inflow opening (46) from which air in the expansion chamber (33) flows in and an outflow opening (47) from which air flowing to a combustion chamber flows out. The connection tube (40) is made from an elastic material having rubber elasticity and has a connection section (41) connected to the air intake muffler (30), an inner tube section (42) extending from the connection section (41), in the expansion chamber (33), and in which the inflow opening (46) is formed, and an outer tube section (43) to which a throttle valve device (50) is connected. A communication hole (44) is provided in a tube wall (42w) of the inner tube section (42), and the communication hole (44) causes the expansion chamber (33) and an air path (45) to communicate with each other in order to make the expansion chamber (33) function as a resonance chamber. The outer tube section (43) has a shorter length than the inner tube section (42). Thus, sound muffling by expansion and sound muffling by resonance are combined in the intake muffler.

The present invention provides an air supply valve provided with an air guide channel for guiding air, a guide opening of the channel faces a valve cylinder inwards, a valve body of a closing part composed of the guide opening is provided in the valve cylinder, an air guide out channel facing the guide out opening in the valve cylinder is provided, and a piezoelectric execution mechanism driving the valve body to execute opening / closing action of the guide opening is provided. the invention is characterized separately arranging air path communicating space between the guide opening and the guide out opening outsides and the guide channel and the air guide out channel when the valve is opened. Thereby realizing miniaturization of the air supply valve and reducing delay of starting and stopping spray air flow.

The invention provides an energy-saving comprehensive noise reduction fan pipeline and a transformation method. The energy-saving comprehensive noise reduction fan pipeline comprises a fan, an air inlet pipeline and an air supply pipeline, wherein an air inlet and an air outlet of the fan are connected with the air inlet pipeline and the air supply pipeline respectively, and the air supply pipeline at least comprises one bent pipe. The energy-saving comprehensive noise reduction fan pipeline is characterized in that an expansion silencer is installed at the inlet of the air inlet pipeline andused for reducing noise of the air inlet pipeline and ventilation resistance of airflow; interference silencing flow deflectors are arranged between the air inlet pipeline and the inlet of the fan, between the air supply pipeline and the outlet of the fan and in the bent pipe respectively and used for eliminating and weakening vortexes. The flow field characteristics can be optimized and improvedthrough the interference silencing flow deflectors, pressure loss is reduced, and vibration and impact effects induced by a pulsating flow field are reduced. Expansion silencing and interference silencing are combined, the design of the pipeline is improved, the pipeline has certain silencing capacity, the expansion silencer is adopted at the inlet, and noise caused by vertical air intake is reduced.

The invention provides a novel high-pressure two-position two-way straight-through type mechanical pneumatic control valve. The novel high-pressure two-position two-way straight-through type mechanical pneumatic control valve comprises a pneumatic control valve body, a pneumatic control valve shaft mounted in the pneumatic control valve body, a top shaft rolling bearing for driving the pneumatic control valve shaft, a piston and a connecting shaft connecting the pneumatic control valve shaft with the piston, wherein a valve shaft air hole is formed in the connecting shaft; a flat valve shaft air-closing end surface is arranged on the connecting shaft; the valve shaft air hole and the valve shaft air-closing end surface are arranged on the same plane; when the pneumatic control valve shaft slides left and right, the ventilating and the closing of the air are controlled; the valve shaft air hole is sealed by an air inlet sealing ring at the upper part and an air outlet sealing ring at the lower part, wherein a sealing clearance between the valve shaft air hole and the air inlet sealing ring can be changed by adjusting a first adjusting screw, and a sealing clearance between the valve shaft air hole and the air outlet sealing ring can be changed by adjusting a second adjusting screw; an air inlet valve opening and an air outlet valve opening are respectively formed above and below the valve shaft air hole. The novel high-pressure two-position two-way straight-through type mechanical pneumatic control valve solves the problems that a zigzag air path is formed by misalignment of an air inlet and an air outlet of a conventional pneumatic control valve, and the space of an air chamber is small, so that the pneumatic control valve can bear high air pressure under high pressure and at high speed, is smooth in ventilating and has the advantages of small resistance force, high efficiency, good sealing property, and stable work.

The invention provides a blower unit for a vehicle, which can prevent the generation of vortexes in an air passage from an external air introducing port, an internal air introducing port to a air introducing port of the blower unit and reduce noise. The blower unit for the vehicle comprises a casing, which includes an air passage and provided with an inside and an outside air introducing port; a rotary damper which opens or closes the inside or the outside air introducing port, and a blower which introduces air from the introducing port to the air passage. The air passage has a fan accommodating portion which is provided on a leeward side of the damper and accommodates the fan of the blower. The casing has a wall portion ranging from a portion near an end portion of a movable range of the rotary damper to a portion near an end portion on a windward side in the fan accommodating portion in the casing, and an inner side surface of the wall portion is formed to be a convex surface projecting toward the air passage. The external air introducing port is disposed in an axial direction of a rotating shaft of the motor of the blower unit. An inner surface part of an enclosed part of the rotary damper has a convex surface projecting toward the damper rotating shaft.

The present invention provides a cooling structure of a battery used for a vehicle. The cooling structure has a foreign material containing part capable of containing foreign materials falling into an air-intake pipeline, and can ensure spacious space of a baggage room and a cabin. For an air-intake pipeline (15) extending from the floor to a side wall surface (23) separating out a baggage room (11) or a cabin, a foreign material containing part (30) is arranged at a branch of a flow passage (22b) for cooling air, the foreign material containing part (30) is used for containing the foreign materials falling from an air inlet (14). The foreign material containing part (30) is arranged in the side wall surface (23) and arranged at a position closer to an inner side than the flow passage (22b) in a vehicle width direction, a part of the air-intake pipeline (15) is arranged below the foreign material containing part (30).

The invention provides a high-temperature dust-removing and filtering sleeve. The high-temperature dust-removing and filtering sleeve comprises a first dust-removing pipe, a second dust-removing pipeand a plug, wherein a bottom-end pipe opening of the first dust-removing pipe is inward sealed to form a blind hole, and a top-end pipe opening of the first dust-removing pipe extends outward to forman annular plane; the porosity of the first dust-removing pipe is 85 percent to 95 percent and the pore diameter of air pores is 30 mum to 50 mum; the second dust-removing pipe is embedded into the first dust-removing pipe; the bottom-end pipe opening of the second dust-removing pipe is inward sealed to form a blind hole, and the top-end pipe opening of the second dust-removing pipe extends outward to form an annular plane; the outer diameter of the second dust-removing pipe is smaller than the inner diameter of the first dust-removing pipe and a cavity is formed; a plurality of exhausting holes, which penetrate through the cavity, are formed in the annular plane of the second dust-removing pipe; the porosity of the second dust-removing pipe is 75 percent to 85 percent and the pore diameter of the air pores is 10 mum to 30 mum; the plug is used for sealing the second dust-removing pipe; the plug is provided with exhausting hole plugs corresponding to the exhausting holes. The high-temperature dust-removing and filtering sleeve provided by the invention adopts a specific structure and rapid and deep filtering can be realized; when being used for purifying high-temperature flue gas and dust, the high-temperature dust-removing and filtering sleeve has a relatively good effect and relatively high efficiency.

The present invention provides a master-and-slave combined burner, wherein a slit burner port is provided in an upper wall of a master burner cap and extends in a radial direction to allow fire to spread between a master burner port and a slave burner port and to prevent narrowing of the slit burner port caused by thermal expansion of the master burner cap, and also preventing deterioration of fire spreading performance. Further, the slit burner port is formed so as to reach an outer circumferential rim of the master burner cap through an upper portion of any bulkhead portions positioned between master burner ports of an outer circumferential side peripheral wall part of the master burner cap. The bulkheads act as supports to suppress narrowing of the slit burner port caused by thermal expansion of the master burner cap.

A deodorizer includes an adsorbent (4) having a physical adsorption capability, an oxide (5) containing cobalt and having a catalytic activity, and a carrier (3) for carrying the adsorbent (4) and the oxide (5). The oxide (5) transforms aldehydes to carboxylic acids, and the adsorbent (4) removes the carboxylic acids by adsorption.

According to an air cleaner having a first element and a second element, the durability of the air cleaner element is improved and the ventilate resistance force for sucking air is reduced. An air cleaner (5) is formed by an air cleaner box (10) and an air cleaner cover (11), the air cleaner cover (11) supports the first element (30) on an element support part (35), the element support part (35) fixes one end to a cap shape body part (32) forming round shape. The first element (30) is mounted on the smudge side in the internal space of the second element (30) form a cylinder shape, and is seton the body part (32) and opposite to a suction port.

The invention relates to the technical field of activated carbon, in particular to activated carbon for a low-impedance automobile carbon tank as well as a preparation method and application thereof.The low-impedance activated carbon for the automobile carbon tank, provided by the invention, comprises the following preparation raw materials in parts by weight: 1000 parts of activated carbon for awooden automobile; 250 to 350 parts of a forming agent; 10 to 30 parts of a dispersant; 30 to 100 parts of a forming auxiliary agent; and 1200 to 2200 parts of water; wherein the activated carbon forthe low-impedance automobile carbon tank is a cylinder with a through hole. Based on the cooperation of the preparation raw materials, the adsorption performance of the activated carbon can be improved; meanwhile, the activated carbon provided by the invention is a cylinder with through holes, so that the ventilation resistance can be reduced, and the technical effect of low impedance is achieved. Results of the embodiment show that the butane working capacity (BWC) of the low-impedance activated carbon for the automobile carbon tank provided by the invention is greater than 40 g / L, and the ventilation impedance at the flow rate of 70L / min is less than 1.8 mbar.

An insert type expansion pipe-integrated air cleaner may include an air cleaner body having a filter chamber in which air is introduced from an outside, the filter chamber having a chamber space provided with a filter, the chamber space being covered by an air cleaner cover, an expansion pipe chamber connected to the filter chamber such that the introduced air is discharged from the expansion pipe chamber to the outside, and a female passage boss through which the introduced air passes from the filter chamber to the expansion pipe chamber by having a cross-sectional area smaller than a cross-sectional area of the expansion pipe chamber while the female passage boss divides the filter chamber and the expansion pipe chamber.

Disclosed is a vehicle air conditioner capable of increasing the aft flow effective region of an inner flow path by reducing the space occupied by support parts of doors for opening / closing a plurality of regions. The vehicle air conditioner comprises: an air-conditioning case in which an air flow path is formed; and a cooling heat exchanger and a heating heat exchanger provided in the air flow path of the air-conditioning case, wherein the air flow path is partitioned and divided into a plurality of regions, and has a plurality of doors for opening / closing each region and a shaft for driving the doors, and the distance between one door and the shaft is different from the distance between another door and the shaft.

The invention provides an instrument for lifting throat tissue, and belongs to the technical field of medical apparatus and instruments. The instrument comprises a lifting handle and a lifting bent piece assembly which are detachably connected, the lifting bent piece assembly is provided with a bent piece, the thickness of the bent piece is 0.5-1 mm, and the width of the bent piece is 1-2 cm; theend of the bent piece is fixedly connected with the lifting handle, and the front end of the bent piece can enter from the oral cavity and reach the throat of a patient. The instrument for lifting thethroat tissue can expand the oropharyngeal space of the patient who is extremely restricted to opening the mouth, so that a broad and unobstructed ventilation or intubation path is formed in the oropharynx of the patient, and convenience is provided for a doctor to perform endotracheal intubation of a fiberoptic bronchoscope or other intubation auxiliary devices. The invention also provides a device used for complicated airways.

The invention relates to the technical field of connectors for gas sampling and detector sample introduction, in particular to a single-closing and opening rapid connector. The single-closing and opening rapid connector comprises a moving end and a fixed end, wherein the moving end comprises an upper connector, a lower connector, a connection disc, a rotation ball, an upper connection pipe and a lower connection pipe; the lower connector is provided with a lower ball base; the lower connection pipe is located on the bottom of the lower ball base and penetrates through the lower connector; the connection disc is fixed on the bottom of the lower connector; an upper ball base is arranged in the upper connector; an opening groove used for rotating the upper connection pipe is formed in one side of the upper connector; the upper connector is provided with inner threads matched with outer threads; the upper connector is rotatably fixed on the lower connector; the upper connection pipe extends out of the center of the opening groove; and the fixed end comprises a connection pipe, so that the upper connection pipe is inserted in in a sealed manner. The rapid connector is high in reliability and simple and convenient for use, and is especially suitable for large-scale sample acquisition and analysis.

The invention discloses a base cloth for a filtering material and a production method of the base cloth. The gram weight of the base cloth ranges from 60 g / m<2> to 95 g / m<2>, the warp tensile strength of the base cloth ranges from 1,000 N / 5 cm to 1,400 N / 5 cm, the weft tensile strength of the base cloth ranges from 250 N / 5 cm to 500 N / 5 cm, the specific value of the warp tensile strength to the gram weight of the base cloth is below 18.0 N.m<2> / 5 cm.g, and the specific value of the weft tensile strength to the gram weight of the base cloth is below 6.3 N.m<2> / 5 cm.g. According to the base cloth for the filtering material and the production method of the base cloth, by means of a special processing technology, the gram weight of the base cloth is reduced on the condition that the strength needed by the filtering material made of the base cloth is guaranteed, and therefore the making cost of the filtering material is reduced; meanwhile, the air permeability resistance of the filtering material is reduced, and the service life of the filtering material is prolonged.

The present invention provides an electric vacuum cleaner having a small and easy-to-operate cyclone-type dust collecting section. It has: an inflow part (115) that flows into the dust-laden air; a separation chamber (104) that separates dust from the dust-laden air that flows in from the inflow part; Part (105a); the first communication port (117) that communicates the first dust containing part with the separation chamber; the first exhaust port (144) that discharges the air stream discharged from the separation chamber; is arranged in the first dust containing part of the second exhaust port (146); accommodate dust, and separate from the first dust containing part 105a set second dust containing part (105b); communicate with the second dust containing part and the separation chamber, and with the first communication port The second communication port (118) provided separately, and the third exhaust port (147) for discharging the air discharged from the second dust containing part.

The invention relates to a mask, particularly to a novel window type mask convenient for wearing of single hand disabled personnel. The novel window type mask comprises a frame which is shaped like a Chinese character hui; the frame is formed by an outer frame and an inner frame; the inner frame is provided with filtering materials; the inner side of the inner frame is provided with supporting strips which are used for supporting the filtering materials; the outer frame and the head of a human body are fixed through a fixing part; the contact surface of the outer frame and the human face is provided with silica gel strips or foam sponges. The novel window type mask convenient for the wearing of the single hand disabled personnel has the advantages of being convenient to use, comfortable in wear, easy to operate, attractive in appearance, small in ventilation resistance and the like.

The invention provides a lubricating oil tank oil suction and exhaust mechanism capable of adapting to multiple working postures of an airplane, comprising: a fixed shaft comprising a hollow shaft, an outer sleeve and an exhaust pipe, a plurality of circumferentially distributed oil suction holes on the hollow shaft, the oil suction holes communicating with the middle part of the hollow shaft, the outer sleeve is fixed on the outer side of the hollow shaft, the outer sleeve and the hollow shaft form a hollow interlayer which is not communicated with the middle part, a plurality of exhaust holes are also formed in the circumferential direction of the outer sleeve, and the exhaust pipe is installed on the outer sleeve and communicated with the exhaust holes; the rotating mechanism comprises an annular body, an exhaust pipe and an oil suction pipe, the annular body is provided with an annular cavity and is divided into an oil suction cavity and an exhaust cavity which are not communicated with each other by a partition, a through hole for connecting the oil suction cavity and the exhaust cavity is formed in the outer wall of the annular body, the exhaust pipe and the oil suction pipe are respectively connected to the through hole, and the rotating mechanism is rotatably mounted on the fixed shaft; the oil suction cavity covers the oil suction hole, and the exhaust cavity covers the exhaust hole; and the positioning nut is mounted on the fixed shaft and is used for limiting the rotating mechanism on the fixed shaft.