83results about How to "Increase ventilation rate" patented technology

A closed air handling system for heating and/or cooling has an integrated damper mechanism for diverting discharge air into the attic or crawl space of a house, apartment, or other building, and for facilitating the introduction of fresh air into such building. Optionally, the damper has integrated louvers for use during an open position such that a venturi effect increases airflow by creating a vacuum between the louvers and the ducts connected to the discharge plenum.

The invention discloses an outdoor distribution cabinet with dust prevention and ventilation functions, the distribution cabinet includes a distribution cabinet main body, a first ventilation device is arranged on the top of the distribution cabinet main body, a second ventilation device is provided at the bottom, the power distribution cabinet main body is of a rectangular hollow structure, and the top part is provided with a first ventilation slot, the first ventilation device communicates with the distribution cabinet main body through the first ventilation slot, the bottom of the distribution cabinet main body is provided with a second ventilation slot, the second ventilation device communicates with the distribution cabinet main body through the second ventilation slot, the first ventilation device comprises an upper shell, and the upper shell is of a rectangular hollow structure. The invention is novel in design, and has the advantages of simple structure and convenient use. Theadjusting mechanism capable of movably opening and closing on the first ventilation device cooperates with the exhaust fan of the second ventilation device at the bottom, so that the ventilation and dust prevention functions of the outdoor distribution cabinet can be greatly improved, not only are the requirements of ventilation and heat dissipation are met, but also the preservation of the dust prevention function is ensured, and the outdoor distribution cabinet is suitable for popularization and use.

A closed air handling system for heating and/or cooling has an integrated damper mechanism for diverting discharge air into the attic or crawl space of a house, apartment, or other building, and for facilitating the introduction of fresh air into such building.

The invention discloses a dual-purpose smoking product which is suitable for being smoked after being ignited and smoked in a heat-not-burn mode at the same time. The dual-purpose smoking product comprises a cigarette core section (1), a supporting section (2) and a filtering section (4) which are sequentially connected; the supporting section (2) and the filtering section (4) are wrapped by forming paper to form a filter tip rod; the cigarette core section (1) and the filter tip rod form the smoking product through tipping paper; a cigarette core base material of the cigarette core section (1) comprises reconstituted tobacco and cut tobacco, and the mass ratio of the reconstituted tobacco to the cut tobacco is 1:1 to 7:3; the reconstituted tobacco comprises a first aroma-increasing substance with a boiling point greater than or equal to 200 DEG C and a second aroma-increasing substance with the boiling point being less than 200 DEG C. According to the structure of the smoking product,cooling and smoke filtering can be both achieved, the comfortable and fast smoking feeling is provided, flavors and fragrances with different boiling points are added to meet the smoking taste requirements of different conditions, the cigarette core section (1) can meet the requirements of consumers on nicotine, and the smoking amount can be ensured in the heat-not-burn state.

The invention relates to the technical field of artificial intelligence, and discloses an artificial intelligence computer with a cooling and heat exchange protection box, including a base, a box body and a machine body, a support rod is installed on the upper surface of the base, and the box is installed on a support The top of the rod, the inside of the right side of the base is provided with an inner groove, the bottom of the inner groove is equipped with a drive motor, and the output shaft of the drive motor passes through the top of the inner groove and connects with the bottom of the drive wheel located above the base. Fixedly connected, the middle part of the bottom surface of the box is plugged with a connecting rod. The artificial intelligence computer with cooling and heat exchange protection box is equipped with fans, through holes, ventilation holes and water cooling pipes. The hot air in the body is cooled to achieve double cooling of the outside of the body. At the same time, it cooperates with the heat dissipation device inside the body to make the heat dissipation more thorough and prolong the service life of the body.

The invention discloses a sealing valve. According to the technical scheme, the key point is that the sealing valve comprises a box, wherein at least one blade is rotatably arranged in the box; the two sides, close to the box, of the blade are provided with first sealing parts; each first sealing part comprises side sealing strips which can abut against the side walls of the box; the side sealing strips are fixedly arranged on the blade in a blade length direction; when a ventilation opening is in a closed state, the side sealing strips abut against the side walls of the box, so that the sealing between the blade and the side walls of the box can be realized; the sealing strips are arranged to directly abut against the side walls of the box, and a baffle plate is not needed to be arranged in the box, so that the area of the cross section of an air flue is prevented from being affected, and therefore, the ventilation quantity of the box is guaranteed, and the ventilation rate of the box is increased.

An elevator interior rapid ventilation device comprises an elevator car. The internal top of the elevator car is provided with a box. The front end of the box is provided with a front air inlet. A front draught fan is mounted at the front air inlet. An air outlet is formed in the lower portion of the rear end of the box and connected with the upper end of a vertical air pipe. The lower end of the vertical air pipe is connected with an inlet of an exhaust seat. An outlet of the exhaust seat faces the front portion of the elevator car. A plurality of layers of filter screens are arranged in the box. According to the elevator interior rapid ventilation device, when the elevator car stays on a certain floor and an elevator door is opened, fresh air is sucked in through the front draught fan and filtered through the filter screens; the filtered fresh air passes through the vertical air pipe and then is exhausted through the exhaust seat; accordingly, the ventilation initiative is effectively improved, the ventilation efficiency is improved when the elevator car stays, the air quality in an elevator is effectively improved, and the ventilation speed is increased.

The invention discloses a ship outer plate ventilation structure, a ventilation system applying the ventilation structure and a ship. An air duct wall plate used for isolating a first structure air duct from a second structure air duct is arranged between the ship outer plate and the cabin. A shielding net module is embedded in the inner side of an outer plate of the front wall of the first structure air duct; a gas-water separation module is fixed to the shielding net module, a pneumatic shutter module is fixed to an air duct wall plate on the rear wall of the first structure air duct, a pneumatic executing mechanism is hinged and fixed to the pneumatic shutter module, a manual operation mechanism is arranged at the end of the pneumatic executing mechanism, and a deck water leakage opening is formed in a bottom plate of the first structure air duct. The air duct is simple in structure, easy to install and arrange, convenient to overhaul and high in operation efficiency, waves or rainwater is effectively prevented from invading a cabin, the air duct of the structural type is high in drainage capacity and high in effective ventilation rate, radar waves can be effectively scattered through the shielding net structure, and the good stealth effect is achieved.

The invention belongs to the technical field of intelligent housing, and particularly provides a control method used for an intelligent housing system. The intelligent housing system comprises an intelligent window and a fresh air ventilator; and the control method comprises the steps of obtaining the indoor formaldehyde concentration; obtaining weather information; if the indoor formaldehyde concentration is larger than the preset value, and the weather information is suitable for window opening for air changing, opening the intelligent window; and if the indoor formaldehyde concentration islarger than the preset value, and the weather information is not suitable for window opening for air changing, only starting the fresh air ventilator. According to the control method, when the indoorformaldehyde concentration exceeds the standard, the room can be subjected to air changing, the indoor formaldehyde concentration is reduced, according to the weather information, the air changing manner is selected, when the weather information is suitable for window opening for air changing, the intelligent window is preferably opened for air changing, energy is saved, and when the weather information is not suitable for window opening for air changing, the fresh air ventilator is started for air changing, and indoor environment is prevented from being affected.

A method for increasing the fermentation production of hyaluronic acid by adding an oxygen carrier of dodecane belongs to the technology field of applying the oxygen carrier to the optimization of the fermentation process. The invention adopts the method of adding the oxygen carrier of dedecane (1-5%, v/v) in a certain concentration to a fermentation broth after 8 hours' fermentation, so as to increase the dissolved oxygen concentration, thereby increasing the production of the hyaluronic acid. When the concentration of the dedecane is 5%, the production of the hyaluronic acid increases from 5.0g/L to 6.0g/L by contrast (no oxygen carrier is added). The method is simple, effective and applicable to the industrial production of the hyaluronic acid and has certain significance in guiding the optimization of other high-viscosity fermentation processes.

The invention relates to iron-smelting furnace hot blast furnace grate system field, especially hole-shape design of a six-piece quincunx-shape hole hot-blast furnace grate. Seven closed arranged round holes on hot-blast furnace grate corresponding to iron-casting grid blocks and lattice bricks are integrated to six-piece quincunx-shape holes. The section of the place connected with furnace grate on cross beam is reduced , The ventilating holes at the place connected with the cross beam are made in to six-piece quincunx-shape holes; 8-shape holes etc. and arranged and combined them to variable form and size six-piece-shape hole furnace grate, The hot-blast Furnace is designed to corresponding structural form.

An embodiment of the invention discloses a new laboratory fume hood. The fume hood comprises a workbench, wherein a shaft is movably arranged at the center of the inner cavity of the workbench, a motor is fixed on one side of the workbench, the shaft is in transmission connection with the motor through an output shaft, both sides of the shaft are provided with adjusting plates, both the two adjusting plates are slidably connected to the shaft, and both the adjacent sides of the two adjusting plates are movably provided with first driving bevel gears. In the invention, a placement cabinet is driven to move up and down through the motor to facilitate the use of people of different heights, an electric push rod drives the two first driving bevel gears to move to the middle of the shaft, the motor can drive two exhaust fans to rotate to generate airflow, and the airflow moves above the workbench through a wind gap, with a fan to speed up the air exchange rate at the top of the workbench. The fume hood has both lifting and double exhaust functions, has a wide range of use and is of a movable structure design, and is convenient to adjust and use and easy to promote.

The invention belongs to the technical field of grease filling and relates to a pneumatic high-pressure grease filling machine comprising a barrel, a filling pump and a cylinder. The cylinder comprises an inner tube and an outer tube; the inner tube is internally provided with a piston connected with a piston rod; a vent gap is provided between the outer cylindrical face of the inner tube and the inner cylindrical face of the outer tube; an air inlet or air outlet of a reversing valve is communicated with an upper cavity of the piston through the vent gap; the air outlet or air inlet of the reversing valve is communicated with a lower cavity of the piston through an internal passage; a connecting pipe and a grease incoming casing are connected in order below a pump base of the filling pump; the inner wall of the connecting pipe above the grease incoming casing is provided with a grease incoming valve seat; a lifting rod unit is provided with a spool fitting the grease incoming valve seat; the pump base above a booster cavity formed by the pump base, the grease incoming casing, the connecting pipe, the grease incoming valve seat and the spool is provided with a grease outgoing connector. The pneumatic high-pressure grease filling machine has the advantages that the double-tube cylinder structure and the square spool are applied, failure rate of a product is low, grease filling is efficient, and the machine is suitable for grease filling of high-pressure grease filling parts.

The invention relates to the field of constructional engineering, in particular to an efficient silent air duct well structure for a roof. According to the technical scheme, an expansion ventilation cavity is formed in the periphery of a prefabricated heating and ventilation air duct well; perforated ventilation aluminum plates are arranged on the four peripheral walls and the top of the expansion ventilation cavity; an aluminum plate top cover is arranged over the prefabricated heating and ventilation air duct well, and the elevation of the aluminum plate top cover is the same as that of the perforated ventilation aluminum plates; a rain shelter concrete overturned opening is arranged abutting against the part, with the prefabricated heating and ventilation air duct well, of the roof; an outward roof drainage slope within the range of the expansion ventilation cavity; a drainage floor drain is arranged at the indoor bottom of the part, with the prefabricated heating and ventilation air duct well, of a building. According to the efficient silent air duct well structure for the roof, the actual air inlet quantity and air exhaust quantity of the roof air duct well are effectively increased, noise is reduced, and the usage quality of the space of the roof is improved.

The invention discloses an exhaust device for a negative pressure isolation ward. The exhaust device comprises an exhaust body and a plurality of telescopic corrugated pipes. The exhaust body comprises a box, an air outlet, a plurality of air inlets, an air outlet valve and air inlet valves, wherein the air outlet and the air inlets are formed in the box, the air outlet valve is arranged on the air outlet, the air inlet valves are arranged on the air inlets, and the air outlet is used for being communicated with an exhaust pipeline in the negative pressure isolation ward. One end of each telescopic corrugated pipe is communicated with the corresponding air inlet, and the other end of each telescopic corrugated pipe is used for being communicated with the portion, needing air exhaust, of the negative pressure isolation ward. According to the exhaust device, the exhaust body is communicated with the building exhaust pipeline in the negative pressure isolation ward, the air inlets of the box are connected with the external telescopic corrugated pipe air exhaust pipelines, and the air outlet valve and the air inlet valves are used for controlling opening and closing of the pipelines, so that the purposes of guiding the flow direction of air in the ward and increasing the air change speed by changing the positions of exhaust openings are achieved. The problem that according to an existing exhaust device on the market, the positions of air change ventilation openings cannot be scientifically and reasonably set is solved.

The invention discloses a high-efficiency air-exchanging and temperature-lowering shed comprising walls, a ceiling, and a fan. The walls are enclosed with windows on two sides, long axes of the shed respectively correspond to an air inlet end and an air outlet end, and the fan is arranged at the air outlet end. Two side walls, close to the air inlet end, of the walls are respectively provided with an outdoor curtain wetting device, and the lower portion, close to the air inlet end, of the ceiling is provided with indoor curtain wetting devices. By the arrangement that the indoor curtain wetting devices and an auxiliary fan are additionally arranged in the shed, so that vertical ventilation and comprehensive cooling can be realized. The shed is uncomplicated in structure and simple to assembly, water recycling devices are arranged in a plurality of positions, and therefore, production cost is further reduced. In addition, ventilation efficiency is higher by the aid of the shed, and temperature lowering effect is good as the temperature close to the long axes can be lowered by 3-5 DEG C.

The invention provides a high-efficiency vehicle-mounted ventilation system which comprises a wind inlet unit, a wind outlet unit and a control unit, wherein the wind outlet unit comprises an unpowered blower and a pipeline and is installed at the middle rear part of the vehicle roof, and the pipeline is directly connected into a carriage; and the wind inlet unit is a ventilation pipe with a curved head and is positioned at the front part of the vehicle roof, the direction of the pipe head faces the direction of the vehicle head, and a small ventilator which can be independently controlled isarranged at the position of the pipe head. When the vehicle is started, air flow drives the unpowered blower to rotate and simultaneously carry the hot air in the vehicle away, and the ventilation pipe replenishes fresh air into the carriage, thereby forming natural air circulation in the carriage. If necessary, the ventilator can be opened to accelerate the ventilation rate. The invention has theeffects that after the unpowered blower is arranged, the air flow force generated by running of the vehicle drives the unpowered blower to quickly carry the hot air in the vehicle away, thereby performing the action of quick ventilation; and the ventilator can accelerate the ventilation rate and can centrifugally throw away rain water and the like.

The invention relates to a tipping paper gluing apparatus and a gluing method as well as a coiling machine. The tipping paper gluing apparatus comprises a gluing wheel and a wrap angle adjusting mechanism, wherein the wrap angle adjusting mechanism is used for adjusting a contact wrap angle beta between tipping paper and the gluing wheel from a paper inlet side of the gluing wheel. By adopting thetipping paper gluing apparatus and the gluing method, the contact wrap angle beta between the tipping paper and the gluing wheel can be adjusted only from the paper inlet side of the gluing wheel inthe adjustment process, and the contact wrap angle beta does not need to be adjusted from a paper outlet side, so that the contact wrap angle beta is freely adjusted on the premise of not influencinga gluing position of the tipping paper, thereby increasing a ventilation rate of a filter tip of a cigarette product, and enabling the ventilation rate of the filter tip of the cigarette product to meet the quality standard.

The invention provides a control method of a fresh air handling unit. The control method comprises the following steps: detecting the concentration of an indoor air quality factor; comparing the detected concentration value n of the indoor air quality factor with a second preset value n2; according to the comparison result of n and n2, controlling the opening degree of an air inlet valve of the fresh air handling unit and the opening degree of an exhaust valve of the fresh air handling unit, wherein the concentration of the indoor air quality factors is the concentration of PM2.5, or the concentration of CO2, or the concentration of TVOC, or the concentration of the indoor air quality factor is the overall concentration of at least two selected from the group consisting of the concentration of PM2.5, the concentration of CO2 and the concentration of TVOC. Through such a technical scheme provided by the invention, the technical problem of high energy consumption of a fresh air handlingunit in the prior art can be solved.

The invention discloses a damp-proof electric cabinet. The damp-proof electric cabinet comprises a cabinet body; an electric control box is installed on one side of the cabinet body, and a power interface is installed on the electric control box; a box door is installed on the cabinet body, and first ventilation slots are arranged on the surface of the box door; a door handle is fixed on the box door; heat dissipation slots are arranged on the surface of the inner shell of the cabinet body, and a drying light is arranged at the middle position of the heat dissipation slots; an electric controlswitch is arranged inside the cabinet body, and the electric control switch is positioned directly below the drying light; a circuit socket is arranged inside the cabinet, and a circuit breaker is arranged on one side of the circuit socket; a bearing plate is arranged in the cabinet body, and a temperature sensor is arranged on the bearing plate; and a ventilating electric fan is arranged at themiddle position of the cabinet body, and the ventilating electric fan is positioned below the bearing plate. By installing drying equipment inside the electric cabinet, and arranging ventilation slotsaround the cabinet body for circulating ventilation, the invention can effectively protect the internal components of the electric cabinet from dampness.

The invention discloses an ultrathin low-frequency ventilation acoustic sound absorption unit and a sound absorber. The ultrathin low-frequency ventilation acoustic sound absorption unit comprises an annular shell, wherein an annular cavity is formed in the shell, through holes are formed in the inner wall of the shell, the cavity is communicated with the outside through the through holes, and a plurality of sound absorption units are sequentially arranged and connected in the sound wave propagation direction to form the sound absorber. The ultrathin low-frequency ventilation acoustic sound absorption unit can realize high-efficiency absorption of low-frequency noise, guarantees ventilation performance, does not influence the external environment of the pipeline, is compact in structure, does not occupy extra space, and can flexibly adjust structural parameters according to specific absorption situations.