69results about How to "Reduce the air flow rate" patented technology

The invention discloses a three-dimensional low-pressure folding mask which comprises at least one filtering piece. Fixing belts are connected on the filtering pieces. The three-dimensional low-pressure folding mask is characterized in that at least one Z-shaped first fold is arranged on each filtering piece, at least one Z-shaped second fold is arranged in a manner of being intersected with the first folds, and four sides are bonded after the filtering pieces are folded. When in use, the folds are pulled outward, a cavity can be formed in front of mouth and nose; each first fold can be drawn in a fold direction, so that the cavity formed is large in depth and abrupt in edge; most of the filtering pieces after being pulled open have wrinkles, so that enlarging of space between filtering faces of the filtering pieces and human faces is limited; when in use, only bonding positions around the filtering pieces contact with the human faces, so that contact area between the filtering faces of the filtering pieces and the human faces is small, the three-dimensional low-pressure folding mask is free of compressive feeling and comfortable to wear, and influence of breathing airflow on impact of the filtering pieces is reduced; filtering performance of each position of each filtering piece is brought into balanced play, so that microparticle penetrating probability caused by local large pressure difference of the filtering pieces is lowered.

The invention discloses a cyclone water-powder-air separator. The separator comprises: a cylindrical outer cylinder; an air discharging port, a liquid discharging port, an air inlet port and a powder discharging port arranged on the cylinder; a swirl eliminating plate, a lower separating plate, a material collecting arc plate, a middle separating plate and an upper separating plate arranged in a chamber formed by the cylinder; a cone-shaped inner cylinder respectively connected to a lower separating plate central hole, a material collecting arc plate central hole and a middle separating platecentral hole, wherein the cone-shaped inner cylinder is arranged above the swirl eliminating plate, and an annular chamber is formed between the external wall of the cone-shaped inner cylinder and the internal wall of the cylindrical outer cylinder; four reversed-cone-shaped cyclone separator and a round distributor with an X-shaped flow deflector arranged between and communicate with the middle separating plate and the upper separating plate; a secondary condensing plate arranged on the bottom of the X-shaped flow deflector; and an air discharging pipe arranged on the center of each reversed-cone-shaped cyclone separator, wherein the four air discharging pipes communicate with the upper separating plate. The invention is suitable for the separating of water-powder-air mixtures, and the separation efficiency of the separator is high.

The invention discloses an improved radiator structure comprising a plurality of mutually parallel oval large-diameter radiating tubes. The long axis of each large-diameter radiating tube is parallel to the airflow flowing direction, a cooling fan is arranged on the rear sides of the large-diameter radiating tubes, a first groove is arranged in the front end of each large-diameter radiating tubes, straight slots communicated with two sides of each large-diameter radiating tube are arranged on two sides of the first groove, a first air inlet tube is arranged on each straight slot and penetrates the same, an air inlet passage is formed by the windward side and the leeward side of each straight slot, a first guide plate is arranged between the large-diameter radiating tubes and the cooling fan, a plurality of openings penetrating the first guide plate are arranged in the first guide plate, and the openings are arranged with the large-diameter radiating tubes collinearly. The shortcomings in the prior art can be overcome, by the new radiating structure, internal and external temperature difference of the radiator is increased under the premise that power of the fan is not increased, and accordingly heat exchange efficiency is improved.

The invention discloses a reflux compressor and its engine, comprising a U-shaped sleeve rotor, the U-shaped sleeve rotor comprising an inner cylinder, an outer cylinder and an annular cylinder connected between the inner cylinder and the outer cylinder Bottom; the U-shaped sleeve rotor opening side is provided with an end cover, and an inner channel stator and an outer channel stator are arranged between the end cover and the U-shaped sleeve rotor, wherein the inner channel stator is arranged on In the middle part of the inner cylinder, the outer duct stator is arranged between the inner cylinder and the outer cylinder; a low-pressure compressed air section is formed between the inner cylinder and the inner duct stator; the inner cylinder and the inner duct A high-pressure compressor section is formed between the stators of the outer duct; the airflow flows back into the high-pressure compressor section after passing through the low-pressure compressor section, and then is discharged after reflowing; the present invention can improve the compressor's compressor capacity, thereby increasing the power of the engine, and The axial dimension of the engine can be shortened.

The invention discloses a large air volume composite muffler, which is composed of a muffler shell, two end flanges, a muffler insert, and an air flow channel. The inner wall of the muffler shell is not provided with sound-absorbing materials; the muffler inserts are respectively It is A muffler insert and B muffler insert. The thickness of B muffler insert is 1 / 2 of the thickness of A muffler insert. Several pieces of A muffler insert and one piece of B muffler are installed in each muffler shell. Inserts, the airflow passages between the muffler inserts are consistent, the airflow passage between the side of the muffler shell and the A muffler inserts is half of the airflow passage between the muffler inserts; the length of the muffler inserts is less than The length of the muffler shell, the muffler insert is installed against the end of the muffler flange. The muffler of the present invention has large muffler capacity, high upper limit of high-frequency failure, high ratio of effective ventilation area, and small volume, and can meet strict muffler requirements especially when two mufflers are used in series.

The invention discloses an exhaust silencer. The exhaust silencer comprises a barrel body, wherein an air inlet pipe is connected onto the first side of the axial direction of the barrel body; an air outlet pipe is connected to the second side of the axial direction of the barrel body; at least one air stream baffle unit which is used for baffling air streams so as to reach a silencing effect is sequentially arranged in the inner cavity of the barrel body from the first side to the second side axially; each air stream baffle unit comprises a first supporting clapboard, a second supporting clapboard and a middle cavity which is formed between the first supporting clapboard and the second supporting clapboard; a perforated pipe which is through in two ends penetrates through the central parts of the first supporting clapboard and the second supporting clapboard; and at least one communication pipe which is through in two ends penetrates through the first supporting clapboard around the perforated pipe. According to the exhaust silencer, air streams are baffled through the air stream baffle units; and meanwhile, air stream speed and exhaust back pressure are lowered, so that the silencing effect of the silencer is further improved.