10results about How to "Reduce air flow" patented technology

This invention relates to a hyperbaric oxygen chamber system with adjustable oxygen concentration. The system includes a main unit and a chamber. The main unit comprises a main control module, an oxygen regulation module, and a pressure regulation module, all electrically connected to the main control module. The pressure regulation module includes a low-oxygen air regulation submodule and a pressure-maintaining air submodule. The pressure-maintaining air submodule includes a first air compressor, a pressure relief valve, and a first sensor. The oxygen regulation module includes a second air compressor, a separation valve, a molecular sieve tower, a flow-limiting valve, and a vacuum pump. The low-oxygen air regulation submodule includes a three-way valve and a one-way valve. This invention's adjustable oxygen concentration hyperbaric oxygen chamber system can reduce the production cost of hyperbaric oxygen chamber systems, improve the user experience, and allow the oxygen concentration within the chamber to be adjusted below that of air, thus expanding its application to low-oxygen training and testing environments.

The utility model relates to the field of turbo-type dust blowing guns, in particular to a flow-controllable turbo-type dust blowing gun, which comprises an outer shell, a handheld handle, an adapter, an air collecting pipe and an adjusting cap, a turbo fan is arranged in the outer shell, the left end of the outer shell is fixedly connected with the handheld handle, an air outlet pipe is arranged at the right end of the surface of the outer shell, and the air outlet pipe is connected with the adapter. The air outlet pipe is fixedly connected with the adapter, an air collecting pipe is fixedly installed at the end, away from the air outlet pipe, of the adapter, and an adjusting cap is installed at the end, away from the adapter, of the air collecting pipe; high-pressure airflow is increased through the turbofan and blown out through the air collecting pipe, dust blowing is achieved, when the airflow passes through the adapting base, personnel adjust the position of the sealing sleeve to enable the air leakage hole to be exposed, so that the airflow passing through the air leakage hole is reduced, the flow can be controlled, and meanwhile when the airflow is blown out, the adjusting cap is rotated to enable the airflow to pass through the adapting base. The positions of the air outlet holes are changed, the air outlet holes and the through holes are staggered, the inner diameters of the air outlet holes are changed, the air outlet flow is reduced, and practicability is improved.

The utility model relates to the technical field of air quality detection, and discloses a forest health environment quality detection device which comprises a box body, a detection module positioned in the box body and a plurality of groups of air inlet assemblies mounted on the box body, and the plurality of groups of air inlet assemblies are mounted on the side wall of the box body; the air inlet assembly comprises an air inlet pipe and an air inlet fan, the air inlet pipe is provided with a front pipe section located at the front end, a rear pipe section located at the rear end and a middle pipe section connecting the front pipe section and the rear pipe section, the middle pipe section is provided with a downward concave part facing the ground, a drainage pipe section is formed on the bottom face of the downward concave part, and a water filtering piece is arranged at the lower end of the drainage pipe section. The water filtering piece comprises a water filtering film and a mounting ring, the mounting ring is detachably connected with the drainage pipe section, and the water filtering film is in contact with the end part of the drainage pipe section; the inner diameter of the drainage pipe section is equal to that of the middle pipe section; the air inlet fan is installed in the rear pipe section, and a port of the rear pipe section is communicated with the detection module. The purpose of the utility model is to effectively prevent water from entering the box body to damage internal electronic components.

A low-resistance efficient cyclone dust collector comprises a shell, a lower conical hopper, an air inlet pipe and an exhaust pipe, the air inlet pipe is arranged on the upper portion of the side wall of the shell, the exhaust pipe is arranged in the center of the top face of the shell and extends into the shell, a grating exhaust device is arranged on the side wall of the exhaust pipe in the shell, an exhaust outlet is formed in the bottom of the exhaust pipe, and the lower conical hopper is arranged in the shell. A flow guide cone is arranged in the shell, and an ash discharge port is formed in the bottom of the lower cone hopper. According to the utility model, the grid exhaust device is arranged on the exhaust pipe, so that a part of flue gas is exhausted from the side part through the grid exhaust device, the flue gas speed is reduced, the flue gas resistance is reduced, and the flue gas is guided through the flue gas guide cone, so that the flue dust separation is realized, and the dust removal efficiency is improved.

The utility model discloses a kind of warm knitted grey cloth, it relates to textile field, and its technical scheme main point is: including outer layer and inner layer, the side of inner layer close to outer layer is equipped with a plurality of nap, the side of outer layer close to inner layer has a plurality of convex edges linear array, the distance between adjacent convex edges is greater than or equal to the width of convex edge, inner layer and outer layer are stitched by stitching line, stitching line passes through convex edge.In the utility model, the distance between outer layer and inner layer is separated by convex edge, cooperate the stiffness of first yarn, ensure that the nap between adjacent convex edges can keep standing, delay the air flow between outer layer and inner layer, form air layer, and then reduce heat exchange, keep warm by nap and air layer, ensure that knitted grey cloth is fluffy soft, first yarn is twisted by polyester fiber silk, polyester fiber silk has good stiffness, second yarn is twisted by hollow special-shaped polyester fiber silk, cooperate the diameter of second yarn, improve the warmth of inner layer.

The invention relates to an air conditioner control method, an air conditioner, air conditioner control equipment and a storage medium, and the method comprises the steps that target parameters are obtained, and the target parameters comprise the air suction temperature and / or air suction pressure on an air suction pipeline of the air conditioner; under the condition that it is determined that the air conditioner has the liquid impact risk based on the target parameters, the opening degree of an electronic expansion valve is reduced so that wet steam entering a compressor can be reduced, and an electromagnetic regulating valve is opened so that the wet steam can enter a crankcase through a bypass branch; and the operation frequency of a compressor in the air conditioner is reduced, and an electric heating element of the gas-liquid separator is controlled for heating. By means of the gas-liquid separator, the problem that in the prior art, only a gas-liquid separator is adopted for reducing liquid backflow, and the effect of reducing the liquid impact risk is poor is solved.

The embodiment of the invention provides a control method and device of a cleaning system, a storage medium and a program product. The method comprises the following steps: responding to a dust collection instruction of the cleaning system; a dust collection fan and a main machine fan are controlled to be started; wherein the power of the dust collection fan is greater than that of the host fan; the driving assembly is controlled to drive the dust blocking module to move relative to the box body to change the opening proportion of the dust inlet so as to change the air inlet flow and the air speed of the dust inlet. Therefore, when the cleaning system collects dust, the opening proportion of the dust inlet is changed, garbage residues are reduced, and the cleaning effect on the box body is improved.

The utility model discloses a mute tire and a tire mold, and aims to solve the problem that the noise of the conventional tire is high during running. The tire comprises a tread part and a sidewall part, the sidewall part is provided with a groove, a pattern unit in the groove comprises a plurality of linear structures, and at least part of the pattern unit is a deformation part. When the tire runs, the deformation parts deform to shield partial gaps between the adjacent linear structures, airflow entering is reduced, and air friction noise is lowered. The top end of the linear structure is a deformation part, the outer surfaces can be located on the same plane during deformation, the section of the linear structure is triangular or trapezoidal, the included angle is 20-45 degrees, the height difference between the top end and the bottom face of the groove is 0.15-0.6 mm, the adjacent gap is 0.1-0.5 mm, and the line type can be a straight line, a broken line or an arc line. The tire mold is provided with protruding modules and textures and is used for forming grooves and pattern units. According to the scheme, noise is effectively reduced while the tire performance is guaranteed.

The utility model belongs to the technical field of respiratory apparatus, specifically relates to an oral cavity pasting formula breathing pipe, including the mutual connection of mouth bite device and pharyngeal cavity air duct, wherein, mouth bite device includes front end mouth, lip stop, tooth socket pipe and tooth stop, and front end mouth and lip stop are connected, and front end mouth and lip stop are connected, and lip stop is oval thin ring, and tooth stop is irregular oval ring, and lip stop and tooth stop are connected through tooth socket pipe, and tooth stop is arranged in the front end of pharyngeal cavity air duct, and front end mouth, tooth socket pipe and pharyngeal cavity air duct are all partial oval pipe body structure, and the front end surface of tooth stop, tooth socket pipe and the rear end surface of lip stop constitute tooth socket, and mouth bite device and pharyngeal cavity air duct are integrally formed.The utility model reduces even eliminates the symptom generation of lip part chapped, tongue front area mucous membrane dry and oral cavity ulcer, reduces the number of night awakening, alleviates snore frequency, improves sleep quality and daytime work efficiency, has the effective prevention of oral cavity pasting formula breathing pipe frequent drop out of the body, and can improve the comfort of wearing.

The application discloses a nitric acid preparation system and method, and relates to the technical field of chemical industry, and can reduce tail gas emission and nitrogen oxide content in the tail gas during nitric acid preparation.