32results about How to "Thorough ventilation" patented technology

The invention provides a non-crankshaft engine with an air cylinder contraposition device. The non-crankshaft engine comprises a straight shaft, a power output gear, a crank device and the air cylinder contraposition device. The crank device comprises a connecting rod, a crank and a fixed-rail piston which is a piston conducting reciprocating motion in a fixed rail seat. One end of the connecting rod is movably hinged to the end of the fixed-rail piston, and the other end of the connecting rod is movably hinged to one end of the crank. The other end of the crank is fixedly and perpendicularly connected with one end of the straight shaft. The power output gear is fixedly installed on the straight shaft. The air cylinder contraposition device is fixedly connected with the fixed-rail piston and drives the fixed-rail piston to synchronously move with the air cylinder contraposition device. Because the crank device and the straight shaft replace a crankshaft, machining is easier, and work is more reliable. The advanced air cylinder contraposition position is adopted by the engine for drive, automatic pressurization can be achieved during acting, the displacement can be changed through electronic control, replacement of the air cylinder contraposition device is as easy as replacement of a lamp bulb, and great convenience is brought for use and maintenance.

The invention provides a cylinder-cover-free engine with a novel crankshaft-connecting-rod mechanism. A power output unit of the engine comprises the novel crankshaft-connecting-rod mechanism, a power output gear and an air cylinder opposition device. The novel crankshaft-connecting-rod mechanism comprises a straight shaft, round wheels, connecting rods and fixed track plates. The two fixed track plates are driven by the air cylinder opposition device to do opening and closing reciprocating linear movement, and then the two connecting rods are driven to simultaneously conduct pushing drive and pulling drive on the round wheels at the two ends of the straight shaft correspondingly in the opposite directions, so that the two round wheels drive the straight shaft and the power output gear to rotate continuously. According to the engine, the novel crankshaft-connecting-rod mechanism which is simple in structure and reliable in operation is used for replacing conventional crankshaft-connecting-rod mechanisms with many defects, and the advanced air cylinder opposition device is adopted for driving; and an acting air cylinder of the air cylinder opposition device is not provided with a cylinder cover, automatic supercharging can be achieved while the air cylinder acts, the displacement can be flexibly changed, the fuel conversion efficiency is remarkably improved, and the two problems of lubrication and complete air exchange of conventional engines are effectively solved.

The invention discloses a gas composition verification device based on a lightening test of an aircraft fuel system. The device comprises a shell in a cubic shape, and a sampling cavity, a partition plate and an electric spark source are arranged in the shell in the vertical direction from top to bottom; pressure relief openings b are formed in every side surface on the periphery of the sampling cavity, a pressure relief opening a is formed in the upper surface of the sampling cavity, and an inflation pipe and an exhaust pipe are arranged on the side surfaces of the sampling cavity; the electric spark source comprises a power supply, discharge electrodes and a capacitor. By means of the verification device, the influence of stray capacitance on an electric spark is reduced, and the accuracy and stability of electric spark energy are improved; through the inflation pipe and the exhaust pipe, full gas change of a combustible gas in the sampling cavity is achieved, gas distribution is even, and gas leakage is unlikely to occur; pressure is relieved through the pressure relief opening a and the pressure relief openings b, so that safety of a worker and test equipment is guaranteed.

The invention relates to a negative pressure type EVC mouse breeding cage box, in particular to a low-power EVC mouse breeding cage box. The low-power EVC mouse breeding cage box comprises a box body, a box cover as well as a water and food iron frame placed in the box body; an air inlet and an air outlet are formed on the two opposite side walls of the box body respectively to form a one-way air flow structure in the cage box; the air outlet and the air inlet are not at the same plane height; the air inlet is lower than the air outlet, and the box cover is integrally sealed at the upper part of the side wall of the box body. A filter is respectively mounted on the air outlet and the air inlet. According to the invention, the air inlet and the air outlet are formed on the two opposite side walls of the box body respectively to form the one-way air flow structure in the cage box; the ambient air in the negative pressure type EVC mouse breeding cage box is sucked through a fresh air entering port (air inlet) and is exhausted through the air outlet in the one-way air flow structure manner; since the air inlet and the air outlet are vertically staggered in position, air in the box body flows upwards generally; compared with the prior art, the structure has the advantages that air is exchanged with fresh air thoroughly, so that a better living environment is supplied for mice; and meanwhile, due to the adoption of the fitting method of the filters, not only is the replacement convenient, but also the air filtration effect enables the air quality in the box body to be ensured.

The invention discloses a method for improving the ventilation and lighting effects of a building. The method specifically comprises the following steps: forming an air inlet port and an air outlet port in the wall of each room in the building; arranging an air purification device at each air inlet port; arranging an air exhaust device at the roof of the building; and forming a lighting window without a movable fan at the wall of each room, and arranging flow-limiting valves at the air inlet port and/or the air outlet port. According to the method, the air inlet ports and the air outlet portsare reasonably formed in the wall of the building, air is driven to enter the rooms from the air inlet ports by the air exhaust device and then is exhausted out of the rooms from the air outlet ports,so that adequate ventilation for each room is ensured; moreover, the air exhausted from the interiors of the rooms is converged into a courtyard, and uniformly exhausted from the top of the courtyardvia an air exhaust port, so that a better ventilation effect for the building is achieved; and the lighting window is a totally-enclosed window, and a movable fan window frame does not need to be arranged on the totally-enclosed window any more, so that a better lighting effect is achieved, and the effect of preventing mosquitoes and dust from entering the rooms can further be achieved.

The invention discloses a gas control system of a reflow oven and a method of the same. The system comprises a reflow oven body, the right side of the reflow oven body is fixedly connected with a machine box, and the bottom of the right side of the machine box is fixedly connected with a tray; and the bottom of the back side of the reflow oven body communicates with an air suction box, a water tank is fixedly connected between the back face of the reflow oven body and the top of the air suction box; and the invention relates to the technical field of reflow ovens. According to the gas controlsystem of the reflow furnace and the method of the same, through the movement of a crankshaft, and two push rods can push a piston to move in turn through the cooperation of a fixing sleeve and a rotating rod, through the cooperation among four pipelines and four one-way valves, air in the reflow oven body can be replaced with helium gas before machining, so that oxygen can be prevented from affecting machining, air sucking and exhausting can be carried out at the same time, and the working efficiency is high; and the internal waste gas can be pumped out after the machining, use is convenientthrough a device to realized, moreover, the air sucking and the exhausting can be carried out synchronously, so that the gas exchange can be guaranteed thoroughly.

The invention provides a marine diesel engine high-pressure SCR ventilation pressure stabilizing system and a ship. The system comprises an SCR reactor, an air inlet pipeline, an air exhaust pipeline, a bypass pipeline, a pneumatic pipeline, a first auxiliary pipeline and a second auxiliary pipeline, wherein when tail gas of a diesel engine needs to be subjected to denitrification treatment, the tail gas can enter from a flue gas inlet, sequentially passes through the air inlet pipeline, the SCR reactor and the air exhaust pipeline and is exhausted from a flue gas outlet, and the tail gas can be subjected to the denitrification treatment in the SCR reactor; and when the tail gas of the diesel engine does not need to be subjected to the denitrification treatment, the tail gas can enter the bypass pipeline from the flue gas inlet and is exhausted from the flue gas outlet, and at the moment, the tail gas in the SCR reactor and the tail gas in the air exhaust pipeline are pushed by compressed air entering from the first auxiliary pipeline and the second auxiliary pipeline to be exhausted from the flue gas outlet. According to the system, an original inlet air pipeline is omitted, a structure of the whole system is simplified, the whole system is more compact, sufficient air exchange is guaranteed, and meanwhile air consumption is reduced.

The invention discloses a valve actuating mechanism on an engine, which comprises a plurality of inlet valves, a plurality of exhaust valves, a first holding base, a second holding base, a first cam, a second cam, a first group of cylinders, a second group of cylinders and a push rod, wherein the inlet valves share the first cam, and the exhaust valves share the second cam. The valve actuating mechanism integrates the advantages of engine valves of four strokes and two strokes of the prior art and the existing art, and has the advantages of light weight, full air inflation, more complete ventilation as well as convenience and larger power and weight because the size of the radial engine is compact.

The invention provides a poultry house ventilation air-exchange system which comprises an air inlet device (2), wherein the air inlet device (2) is arranged on a side wall of a poultry house. The poultry house ventilation air-exchange system is characterized by further comprising a ventilation pipeline which is communicated with the air inlet device; inside the poultry house, the ventilation pipeline extends to the part above a case along the side wall of a wall body and a roof; the ventilation pipeline comprises a guide section (3) and an air outlet section (4); an air outlet part is arranged on the pipeline wall of the air outlet section (4). The invention further relates to a poultry house ventilation air-exchange control method. By adoption of the poultry house ventilation air-exchange system, the temperature can be kept constant while ventilation and air exchange are achieved, and air can be sufficiently exchanged in the center inside the poultry house. By adoption of the poultry house ventilation air-exchange control method provided by the invention, different ventilation air exchange methods can be adopted according to different seasons and different growing stages of poultry, and thus the comfortable level of poultry can be increased.

The invention discloses a pair of multi-purpose ventilation shoes comfortable to wear. Each multi-purpose ventilation shoe comprises an outer sole, an inner sole and a vamp, wherein the vamp and the outer sole are glued into a whole; a ventilation cavity is formed between the outer sole and the inner sole; two sides of the outer sole are provided with a plurality of vent holes communicated with the ventilation cavity; the outer sole is provided with a plurality of guide posts; the inner sole is provided with a plurality of guide holes matched with the guide posts; the guide posts are sleeved by springs; certain ends of the springs prop against the outer sole; the other ends of the springs prop against the inner sole; the upper ends of the guide posts are provided with semicircular massage points matched with a foot.

A structure of the skylight of a greenhouse capable of facilitating a stretching operation for plastic film covering the roof of the greenhouse, comprising a window receiving frame (4) having holding parts (4c) capable of holding film fixtures (11) so as to be slidably moved by the engagement thereof with a part of the film fixtures (11) disposed on a frame material (10) forming the roof of the greenhouse, characterized in that joint members (12) capable of fixing the film fixtures (11) to the frame material (10) at any positions in the slidable movement range thereof are fitted to the frame material (10).

The invention relates to a volatile matter detection device for a school uniform. The device comprises a sealing box and a controller, wherein the inner side of the sealing box is divided into a uniform-hanging room and a detection room in equal volume through a vertical partition plate; the bottoms of the uniform-hanging room and the detection room communicate to an electromagnetic valve arranged on a pipeline through the pipeline and communicates to the upper portion through a ventilating device; a sealing door is arranged on the lateral side of the uniform-hanging room and a coat hanger is arranged inside; a sealing movable plate is arranged in the detection room through a guide structure up and down and a telescopic mechanism up and down; a distance sensor and a volatile matter detection mechanism are arranged on the lower surface of the sealing movable plate; and the volatile matter detection mechanism is connected to a volatile matter data display module. The device provided by the invention overcomes defects in the prior art, and detects the volatile matters in compressed air by means of the volatile matter detection mechanism, so that the effect of condition of volatile matters after multiple uniforms are concentrated is achieved by detecting one uniform, and the device is simple in structure, convenient to operate, low in cost and easy to popularize and use.

The present invention enables downsizing of a ventilation shoe and enables sufficient ventilation of the interior of the shoe. The present invention has: an upper (31); a sole (32) obtained by stacking a plurality of sole sheets; and a ventilation device for taking air into a shoe interior (34) and discharging air outside the shoe interior (34). The ventilation device is provided with: an air intake passage (L1) for taking in air; an air discharge passage (L2) for discharging air; and a pump chamber (P) for feeding the air taken in through the air intake passage (L1) to the air discharge passage (L2). The sole (32) is configured from a plurality of sole sheets being stacked on one another, and the pump chamber (P) is formed in a flattened shape between the sole sheets, and valve installation holes (152, 157) are formed in an intermediate sole sheet that is sandwiched between other sole sheets from above and below, and check valves (V1, V2) are respectively provided in said valve installation holes (152, 157) in such a manner as to be integrated therewith via a support member.

The invention discloses an intelligent ventilation control method of a hydrogen energy automobile, terminal equipment and a storage medium. Vehicle door and window closing locking signals and personnel information are further obtained by obtaining vehicle power-on and power-off electric signals, when vehicle doors and windows are in a closed state and people exist in a vehicle, the vehicle enters an intelligent alternate circulation mode, and at the moment, the vehicle intelligently matches a ventilation frame, an air blower and an air conditioner internal and external circulation air door; active control over the air distribution form in the cab of the whole vehicle is achieved, so that short-time rapid ventilation of the cab is achieved, and the purposes of airtight NVH comfort are achieved. In the intelligent alternate circulation mode, the smaller the internal and external pressure difference of the four doors during vehicle ventilation is, the smaller the proportion of uncontrollable air leakage passing through four-door ventilation is, namely the smaller the proportion of fresh air flow short circuit is, and when the ventilation frame is used for active ventilation, the proportion of carbon dioxide in air is high, and the ventilation efficiency is high. Rapid and sufficient air exchange in the vehicle is effectively guaranteed, air in the vehicle is fresh, and the purpose of NVH comfort in the vehicle is achieved.