94results about How to "Reduce inspiratory resistance" patented technology

The invention provides a spirally-driven slidably-punctured electronic smoking set, which comprises a smoking set shell, wherein a gas suction hole is formed in one end of the smoking set shell, and threads are arranged on the inner wall or outer wall of the smoking set shell; a tobacco juice atomizer and a tobacco juice capsule are arranged in the smoking set shell; a puncturing liquid guide frame is arranged on one side, which is close to the tobacco juice capsule, of the tobacco juice atomizer; and the tobacco juice atomizer slides in the smoking set shell along the axial direction of the smoking set shell. By the spirally-driven slidably-punctured electronic smoking set, the puncturing liquid guide frame on the tobacco juice atomizer can puncture the tobacco juice capsule in a sliding mode under the driving of a spirally-driven mode, the puncture direction and puncture force of the puncturing liquid guide frame during the puncture of the tobacco juice capsule are not needed to be mastered by users, and after the users screw the threads, the puncturing liquid guide frame can puncture the tobacco juice capsule according to the accurate direction and force; and after the puncturing liquid guide frame punctures the tobacco juice capsule, the tobacco juice capsule can keep high tightness except for tobacco juice which is led out slowly along the puncturing liquid guide frame, so that the using time of the tobacco juice capsule can be prolonged, and the tobacco juice can be prevented from being polluted.

The invention relates to an air filtering membrane which comprises a first transparent organic thin membrane and a second transparent organic thin membrane which are stacked together, and a graphene thin membrane clamped between the two transparent organic thin membranes, wherein a plurality of first through holes are formed in the first transparent organic thin membrane; a plurality of second through holes are formed in the second transparent organic thin film and are equal to the first through holes; the diameters and the positions of the first through holes are consistent with those of the corresponding second through holes, so that a plurality of passageways are formed; and the graphene thin membrane is provided with a plurality of cracks, or a plurality of through holes are formed in the graphene thin membrane and correspond to the passageways formed by the first through holes and the second through holes. The air filtering membrane can stop ultra-small dust particles and completely meet the requirement on prevention of PM2.5, and furthermore, is high in ventilating property, transparent, soft, folding, easy to carry and convenient to mount.

The invention discloses a double-cylinder rotary type compressor component and a compression device thereof. The compression device comprises a first cylinder, a second cylinder and a partition plate, wherein a first compression cavity is formed in the first cylinder; a first air suction slot communicated with the first compression cavity is formed in the lower surface of the first cylinder; the second cylinder is arranged below the first cylinder; a second compression cavity is formed in the second cylinder; a second air suction slot communicated with the second compression cavity is formed in the upper surface of the second cylinder and corresponds to the first air suction slot from top to bottom; the partition plate is arranged between the first cylinder and the second cylinder; a third matching slot is formed in the partition plate and is matched with at least one of the first air suction slot and the second air suction slot; the first air suction slot, the second air suction slot and the third matching slot jointly form an air suction opening. According to the compression device for the double-cylinder rotary type compressor component, disclosed by the invention, the transverse size of the air suction opening is large, the air suction resistance is reduced, and the efficiency of the double-cylinder rotary type compressor component is improved.

The invention discloses a separable mask with an internal arching strip. The separable mask comprises mask cloth and bands for fixing the mask cloth, and is characterized in that an annular interlayer is arranged on the inner side of the mask cloth, the inner circumference of the interlayer is separated from the mask cloth, the interlayer is provided with an annular connecting line for connecting the interlayer with the mask cloth, and the connecting line is located on the outer side of the portion, separated from the mask cloth, of the interior of the interlayer to accordingly form a groove with an inwards-opened opening; a pressing piece is arranged and matched with the groove in size and shape to accordingly enable a part of the edge of the pressing piece to be installed in the groove, and separable connection with the mask cloth or the interlayer is accordingly achieved; the pressing piece is provided with a strip-shaped body arching towards the region, surrounded by the groove and located in front of the mouth or the nose, of the mask cloth, and the mask cloth is ejected through the strip-shaped body from the region, in front of the mouth or the nose, of the inner side of the mask cloth. Materials can be saved, the air impermeability can be improved, the effective air inspiration breathable area of the mask can be increased, the comfort of the mask can be improved, and the separable mask is healthier.

The invention relates to a portable haze purification device, which comprises a nasal mask, switches, air pumps, containers, a battery and the like, wherein the nasal mask is communicated with an outlet of a first micro air pump; an inlet of the first air pump is communicated with an outlet formed in a first sealed container; a plurality of plates with micropores are arranged inside the first sealed container; the bottom of an inner cavity of the first sealed container is communicated with an outlet formed in a second sealed container; a plurality of plates with micropores are arranged inside the second sealed container; the bottom of an inner cavity of the second sealed container is communicated with an outlet formed in a second micro air pump; an inlet of the second micro air pump is communicated with an open container; a filtering material is filled in the open container; liquid is accommodated in the sealed containers; the liquid levels of the liquid in the sealed containers are required to be higher than the microporous plates; the first micro air pump, a first switch and the battery form a circuit; the first switch is linked with a micro switch on the nasal mask; and the second micro air pump, the second switch and the battery form a circuit. The portable haze purification device is simple, feasible, convenient to carry and large in air feeding amount and ensures the smoothness of breathing of a wearer.

The invention discloses a gas suction structure of a compressor. The structure comprises a gas inlet channel provided radially on a gas cylinder. The structure also comprises a suction channel which is formed on the inner side of the gas cylinder along a gas cylinder axial direction. The suction channel penetrates the two end faces of the gas cylinder. The suction channel communicates with the gas inlet channel, and is arranged vertically. The gas inlet of the suction channel on the inner wall of the gas cylinder is a rectangular gas inlet formed on the axial direction of the gas cylinder and penetrating the two end faces of the gas cylinder. The rectangular gas inlet is arranged close to a sliding vane groove of the gas cylinder. The suction channel is convenient to manufacture. Also, with the suction channel, gas cylinder suction volume can be increased, a relatively ample buffer space is provided, such that suction resistance can be reduced, and gas can flow into the gas cylinder more smoothly.

The invention discloses a host machine of a novel oil injection sliding vane air compressor. An air cylinder comprises a shell and an interlayer. The shell is provided with a radial air inlet, and an air inlet cavity is arranged between the top of the interlayer and the shell; an air exhaust cavity is arranged between the bottom of the interlayer and the shell. The bottom of the interlayer is provided with inner air exhaust openings. The front end face and the rear end face of the shell are provided with a front end cover and a rear end cover respectively. The front end cover and the rear end cover are provided with a front end cover air suction cavity and a rear end cover air suction cavity respectively. A rotor is eccentrically arranged in the interlayer. The front shaft neck of the rotor is sleeved with a front bearing and a front shaft seal from front to back sequentially. The rear shaft neck of the rotor is sleeved with a rear bearing and a rear shaft seal from front to back sequentially. The host machine of the novel oil injection sliding vane air compressor is short in air suction path and high in volume efficiency, and is capable of ensuring that no leakage occurs when the rotor rotates axially and effectively avoiding the trouble of shaft sticking when a sliding vane air compressor is started at low temperature. The host machine of the novel oil injection sliding vane air compressor further has the advantages of being low in manufacture cost, small in manufacture difficulty and convenient to maintain.

The present invention is an air intake device for a two-wheeled motorcycle, which is formed in an air filter housing divided into an upstream side air chamber and a downstream side air chamber by an air filter element, and the lower part of the air filter housing has a The lower opening is further provided with a rib that surrounds at least a part of the circumference of the lower opening and protrudes downward from the air filter case. It is possible to prevent rainwater and muddy water from being sucked into the air filter housing while reducing the suction resistance.

The invention provides a dustproof mouth mask with a dynamic breathing function for a dust work environment. A filter material of the dustproof mouth mask adopts corrugated filter sponge, the adopted corrugated angle theta of the filter material is less than 60 DEG, a corrugated generating line is parallel to the gravity direction, and an air outlet and the downstream part of the filter material at an air inlet of the mouth mask are provided with a high-speed centrifugal fan respectively. On the premise of meeting the air flow for breathing of a human body, the effective filter area of the filter material is increased, the air speed is reduced, the flow resistance of the filter material is reduced, and the inhalation resistance is reduced. A micro electric air supplying and exhausting system and the micro high-speed centrifugal fan are adopted; and the requirement of the pressure in the inhaling process of the human body can be fully met, and the increment of the pressure in the inhaling process of the human body is controlled to be in the reasonable range at the same time. The breathing pressure difference of the novel mouth mask is controlled to be within 30 Pa, the structure design and the control of the whole system are simplified while the safety is met and the comfort is improved, and the mouth mask is small in volume, light in weight and convenient to carry.

The invention discloses a sound-proof double air inlet micro air pump. The sound-proof double air inlet micro air pump comprises a motor and a shell assembly, wherein the shell assembly comprises a fixed base and a cup base; a valve seat is mounted on the cup base; an upper cover with an air outlet is arranged on the valve seat; the fixed base and the cup base are enclosed to form an air inlet cavity; the valve seat and the upper cover are enclosed to form an exhaust cavity; an eccentric cap, a linkage shaft and a linkage bracket are arranged in the air inlet cavity; an air compression cup is mounted on the cup base; a one-way exhaust valve is mounted on the valve seat; filtering sound-proof cotton is arranged in the exhaust cavity; an inner cavity of the air compression cup is an air compression cavity; the eccentric cap is connected with a motor; an eccentric hole is formed in the eccentric cap; one end of the linkage shaft is mounted in the eccentric hole; the other end is connected with the linkage bracket; a left air inlet hole and a right air inlet hole are formed in the fixed base; and positions of the left air inlet hole and the right air inlet hole exceed a rotation track of the eccentric cap to form a double air inlet structure. The sound-proof double air inlet micro air pump has the advantages of reducing air noise, large air suction amount, reducing air suction resistance and reducing vibration.

The invention provides a compressor pump body and a compressor provided with the same. The compressor pump body comprises an upper flange, an air cylinder, an air suction channel and a lower flange, wherein the air cylinder is arranged under the upper flange; the air suction channel is formed in the upper flange and the air cylinder and enables the upper flange and the air cylinder to be communicated, and the axis of at least part of the air suction channel is arranged obliquely relative to the axis of the air cylinder; the lower flange is located under the air cylinder and is connected with the air cylinder. The air suction channel enabling the upper flange and the air cylinder to be communicated is formed in the upper flange and the air cylinder, the axis of at least part of the air suction channel is arranged obliquely relative to the axis of the air cylinder. In this way, the compressor pump body sucks air from the upper flange through the air suction channel; besides, since the axis of at least part of the air suction channel is arranged obliquely relative to the axis of the air cylinder, the air suction resistance of the compressor pump body is reduced effectively, and accordingly the power of the compressor pump body is increased. The problems that a compressor is high in air suction resistance and low in efficiency in the prior art are solved effectively.

The invention discloses a method and a system for measuring aspiratory flow velocity by a differential pressure type sensor. The method comprises the following steps: sensing a flow velocity signal bya sensing device and converting the flow velocity signal into a level signal; comparing the level signal with a predetermined level by a comparer; sampling the level signal by a sampler under the condition that the level signal is more than the predetermined level so as to acquire an AD sampling signal, and calculating the current flow velocity by a first processor according to the AD sampling signal; amplifying the level signal by an amplification circuit under the condition that the level signal is less than the predetermined level; and sampling the amplified level signal by the sampler soas to acquire the amplified AD sampling signal, and calculating the current flow velocity by a second processor according the amplified AD sampling signal.

A suction muffler for a refrigeration compressor, comprising a housing, in which a partition is formed, the partition extends from the front inner wall of the housing to the rear inner wall of the housing, and is separated in the housing cavity by the partition The first and second mufflers communicate with each other, the left end of the front outer wall of the housing extends with an air outlet, and the air outlet communicates with the second muffler chamber, the outer wall of the housing and around the periphery of the housing form a shell in a spaced state. The body locating part; the shell cover, the shell locating part is formed around the outer wall and at the position corresponding to the shell locating part in a spaced state, the shell locating part cooperates with the shell locating part, and the right side wall of the shell cover is set into The air hole and the air inlet communicate with the first muffler chamber. Features: the edge of the outer wall on the side of the shell facing the shell and the position corresponding to the upper edge of the shell form a sealing fitting groove on the upper edge of the shell, and the shell The sealing fitting groove of the upper edge is sealingly matched with the upper edge of the casing. Significantly reduce noise; reduce suction resistance, reduce volume, and improve assembly efficiency.

The invention belongs to the technical field of protective articles, and particularly relates to a protective mask and a preparation method thereof. The protective mask provided by the invention comprises a main body and ear rope sleeves, wherein the main body comprises a fabric layer, a first porous membrane material layer, a two-component fabric layer, a second porous membrane material layer anda non-woven fabric layer which are sequentially stacked from outside to inside; a hot melting fiber net is arranged between the fabric layer and the first porous membrane material layer; the first porous membrane material layer and the second porous membrane material layer are polytetrafluoroethylene porous membranes or melt-blown non-woven fabrics independently; and at least one of the first porous membrane material layer and the second porous membrane material layer is a polytetrafluoroethylene porous membrane. The first porous membrane material layer and the second porous membrane materiallayer form a double-layer porous membrane structure, so the liquid-repellent and mist-repellent properties of the protective mask is achieved, and it is guaranteed that the layer structure of the protective mask is not changed when the protective mask is cleaned; and filtering is not conducted through electrostatic interaction, and the protective mask can be washed with water.

The invention provides an air suction device, a compression air suction structure and air conditioning equipment. The air suction device comprises an air suction pipeline. The air suction pipeline comprises a necking pipe section, a first pipe section and a second pipe section which are connected in sequence, and an air inlet of the necking pipe section is used for being in butt joint and communicated with an air outlet of an air conveying pipeline; a filtering device is arranged at a butt joint of the air inlet of the necking pipe section and the air outlet of the air conveying pipeline; at least parts of the necking pipe section, the first pipe section and the second pipe section are arranged on the outer side of the compressor; the plurality of second pipe sections are arranged in parallel and correspond to multiple compression air cylinders of the compressor in a one-to-one mode, and an air outlet of each second pipe section communicates with an air inlet of the corresponding compression air cylinder. Therefore, gas filtered by the filtering device sequentially passes through the necking pipe section, the first pipe section and the second pipe sections and then directly entersthe corresponding compression air cylinders. The air suction device is used for solving the problem that in the prior art, the air suction efficiency of the compressor is low.

The invention discloses an oxygen-making and nitrogen-making air compressor, relating to the field of air compressors. The oxygen-making and nitrogen-making air compressor comprises an air compressor main machine (1), an air buffering tank (2), an oil remover (3), an air filter (4), a cooling air duct (5) and a cooler (6), wherein the air compressor main machine (1), the air buffering tank (2), the oil remover (3), and the air filter (4) are sequentially connected, and the air filter (4) is connected with the cooler (6) by the cooling air duct (5); and the air filter (4) uses an air filter element with a nanometre surface layer. The filter element of the oxygen-making and nitrogen-making air compressor is low in air suction resistance and energy consumption, thus greatly increasing the service life of the air compressor main machine; and the oxygen-making and nitrogen-making air compressor is convenient to clean, low in maintenance cost, safe and reliable.

The invention discloses a rotor-free unmanned aerial vehicle in the technical field of unmanned aerial vehicles, the rotor-free unmanned aerial vehicle comprises a vehicle body and four sets of vehicle arms annularly arranged on the periphery of the vehicle body, an air inlet bin is arranged in the vehicle body, the air inlet bin is provided with air inlets communicating to the two sides of the vehicle body, and the vehicle arms are each of a hollow pipe body structure; the inner side ends of the machine arms are communicated with the air inlet bin through soft air pipes, the outer side ends of the machine arms are communicated with airflow jet rings, turbofans driven by servo motors are arranged in the four sets of machine arms respectively, and a battery mainboard bin is arranged at the position, located below the air inlet bin, in the machine body. According to the rotor-free unmanned aerial vehicle, most topographic conditions can be ignored, the unmanned aerial vehicle is different from an unmanned aerial vehicle with external rotor wings, blades are prone to being damaged during flight, the unmanned aerial vehicle is damaged, and the unmanned aerial vehicle with the built-in rotor wings can be ignored from the dangerous factors, so that the unmanned aerial vehicle with the built-in rotor wings is safe and reliable. And the unmanned aerial vehicle has good flight stability, controllability and safety.