53results about How to "Change air volume" patented technology

The invention discloses a targeted spray machine with an automatically adjusted and controlled air inlet. The targeted spray machine comprises a left diversion air box, a right diversion air box, an ultrasonic sensor and a speed sensor, wherein the left diversion air box and the right diversion air box are fixedly arranged at the back end of a spray machine base plate; the spray machine base plate is loaded on a tractor; spray heads connected to a pesticide box, and centrifugal fans of which the wind directions face the spray heads are arranged in the air boxes; the air inlet of each air box is provided with a conical air inlet device; a circular baffle plate which is coaxial with each air inlet device, can rotate along a shaft and is provided with a plurality of fan-shaped holes is fixedly arranged on each air inlet device; each baffle plate is connected with a stepping motor; and a controller is used for outputting a control signal according to received tree crown information acquired by using the ultrasonic sensor and speed information acquired by using the speed sensor for controlling the stepping motors to rotate to realize control over the rotating angles of the baffle plates and realize change of the air amounts at the air inlets of the air boxes. The magnitude of the air amount at an air outlet can be changed by automatically adjusting the air inlet area of an air supply spray machine according to the detected size of a fruit tree crown and the operation speed of the tractor, so that accurate pesticide application to orchard gardens is realized, and the pesticide utilization ratio is increased.

A fan comprises at least a fan frame, at least an impeller and at least an active flow control device; wherein, the fan frame is provided with at least an air outlet and at least an air inlet; the impeller is arranged in the fan frame; the active flow control device is arranged on the fan frame so as to actively change the size of the air outlet or the air inlet according to requirements.

The invention relates to a mechanical device for immediately adjusting an installing angle of a guide vane. The mechanical device can immediately play optimum performance under the different working conditions and has the advantages of being capable of saving effort in adjustment and convenient to user. According to the technical scheme, the mechanical device for immediately adjusting the installing angle of the guide vane comprises a guide vane hub located at the upstream position of a box, coaxial with the box and arranged in a fan housing and a plurality of guide vane blades evenly distributed on the outer circumferential face of the guide vane hub along the circumference and is characterized in that the guide vane blades are respectively and rotatably hinged to the outer circumferential face of the guide vane hub, an adjusting mechanism drives and controls rotating angles of the guide vane blades and comprises prism adjusting shafts capable of moving along the axis of the fan housing and provided with side prisms identical to the guide vane blades in number, groove block matching structures converting movements of the prism adjusting shafts into rotation of the guide vane blades around the hinge axis and an adjusting motor exerting axial thrust on the prism adjusting shafts.

The invention discloses a forced casting cooling system. In the forced casting cooling system, a section of semi-tight cover is enclosed on a casting conveying line; the semi-tight cover is provided with a suction port; and the suction port is communicated with a motor draught fan. Due to the adoption of the system, the casting cooling time can be greatly shortened, the length of the casting conveying line is reduced, the floor area is saved, and the casting cooling effect is improved; and the casting conveying production line can run normally, and the production is not influenced.

The invention relates to an air purifier fan filtering wind wheel, with axle base, which is provided centrally with axis hole, and blade on the outside. There is a joint at the outside of the axle base, which has external screw thread and inner holes. There are regulation tooth at the inside of the connecting hole; the blade is consist of frame, metal spacing net and activated carbon fiber layers; the bottom of the linking frame is provided with the line-spacing axle, and the outside of line-spacing axle is equipped with positioning cap, and the bottom is provided with the regulation gear, and the regulation gear is coordinated with the regulation tooth profile. The internal thread coordinated with external screw thread providing by the positioning cap, and the blade is fixed on joint with positioning cap. The blade of the air purifier fan filtering wind wheel can be separated with axle base, and is convenient for changing, reducing cost. The blade angle can be adjusted freely, and the air quantity can be changed, at the same time, the blade has a filter effect, so that some harmful particles in air can be effectively filtered out.

An indoor unit (1) of an air conditioner is installed on an upper part of a wall surface (W1), and a suction port (4) and a blowout port (5) are provided in a front part and a lower part, respectively, of the indoor unit (1). The blowout port (5) is fitted with wind deflectors (113a, 113b, and 113c) that can vary the blowout direction between a frontward-horizontal direction and a rearward-downward direction. At the start-up of heating, conditioned air is sent out obliquely downward toward the wall surface (W1). By the Coanda effect, the conditioned air goes down along the wall surface (W1), and then flows over a floor surface (F) to circulate inside the room. When the heating operation has stabilized, the wind deflectors (113a, 113b and 113c) are so driven to narrow the air stream path so that the conditioned air is sent out at a lower wind volume.

The invention provides an acid-base neutralization reaction device for water pollution control, which comprises a box body, a first bearing is fixedly sleeved in the upper end of the box body, a rotating drum is fixedly sleeved in the first bearing, a second bearing is fixedly sleeved in the rotating drum, a driving shaft is fixedly sleeved in the second bearing, a first bevel gear is fixedly connected to the outer side of the rotating drum, a second bevel gear is fixedly connected to one end of the driving shaft, a servo motor is fixedly connected to the outer side of the box body, a third bevel gear is fixedly connected to the tail end of an output shaft of the servo motor, a round pipe is fixedly connected to the interior of the box body, and a water inlet pipe is fixedly connected to the round pipe. The round pipe, a spray head, a water pump and other structures are additionally arranged in the box body, when water enters a sewage pipe, reaction liquid in a liquid box can be conveyed into the spray head through the water pump and then sprayed out, and therefore the reaction liquid can be added more evenly.

The invention provides an automobile air conditioner air guide structure. The automobile air conditioner air guide structure comprises an air guide structure, a driving motor and a control knob; the air guide structure is arranged in a cold / warm air mixing passage in an air conditioning cabinet; the air guide structure comprises a bracket, an air guide flow passage and a rotating shaft; the air guide flow passage is arranged on the bracket through the rotating shaft; the bracket is fixedly arranged on a shell in the air conditioning cabinet in a mother-son groove matching manner; the driving motor is arranged on the external surface of the shell of the air conditioning cabinet and connected with the rotating shaft; and the control knob is connected with a pin of the driving motor through awiring harness plug. According to the automobile air conditioner air guide structure, by arranging the air guide structure in the cold / warm air mixing passage in the air conditioning cabinet, the airoutlet volume of a face blowing air port, a foot blowing air port or a defrosting ventilation orifice can be increased so that the purpose of singly adjusting the temperature of a single air outlet is realized; and therefore, different demands of drivers and passengers on face and foot sensing temperatures are satisfied, and the taking comfort is improved.

The invention discloses heat dissipation equipment, which comprises a fan, at least two heat dissipation air ducts communicated with the fan, and adjustable wind resistance baffle plates arranged at wind inlets of the heat dissipation air ducts. The heat dissipation air ducts are used for placing at least one heating component; the fan is used for providing wind for the heat dissipation air ductsto reduce the temperature of the heating component; and the adjustable wind resistance baffle plates are used for adjusting the quantity of the wind entering the heat dissipation air ducts. The heat dissipation equipment in the embodiment of the invention comprises the fan, the at least two heat dissipation air ducts communicated with the fan, and the adjustable wind resistance baffle plates arranged at the wind inlets of the heat dissipation air ducts, so the quantity of the wind entering the heat dissipation air ducts can be adjusted through the adjustable wind resistance baffle plates; therefore, when the quantity of the wind entering one of the heat dissipation air ducts needs to be changed, the change of the quantity of the wind entering the heat dissipation air ducts can be implemented only by adjusting the adjustable wind resistance baffle plate, and the structures of the heat dissipation air ducts are prevented from being redesigned.

The invention relates to a fan filter unit with fixed surface air speed and controllable area. The fan filter unit comprises a device casing, the bottom of the device casing is provided with an air outlet, the top of the device casing is provided with a circular air suction port, a fan is arranged below the circular air suction port, a filter is arranged below the fan, and an air speed sensor is arranged at the center below the filter and is connected with a controller through a lead, wherein the controller is arranged on the top of the device casing and used for controlling rotation speed of the fan. The fan filter unit breaks through the conventional method of controlling air quantity by changing air speed via area fixing type, senses and monitors the air speed of the air outlet by means of the sensor and timely feeds the air speed back to the controller, and the controller can immediately transmits signals to enable rotary shafts on two sides of a box to rotate in or out to adjust the area of a windward side, so that air quantity can be changed, air speed can be stabilized, and airflow distribution can be constant.

The invention discloses a fan, nitrogen making equipment and a control method of the nitrogen making equipment, and belongs to the technical field of nitrogen making equipment. The fan comprises an impeller, blades, a first driving mechanism and a second driving mechanism, the blades are rotatably connected to the impeller, the first driving mechanism is in driving connection with the impeller so as to drive the impeller to drive the blades to rotate, and the second driving mechanism is in driving connection with the blades so as to adjust the included angle between the blades and the impeller by driving the blades to rotate. According to the scheme, the problem of relatively high power consumption of a heat dissipation device of nitrogen generation equipment in the related technology can be solved.

The invention provides an integrated high-energy reactive oxygen ion air purification device which comprises purification boxes, a fresh air filter fixedly penetrates through the side face of the lower end of the purification box, and a through groove is formed in the center of a middle partition plate in a penetrating mode; the lower end of the through groove fixedly communicates with the air outlet end of a centrifugal fan, and the upper end of the through groove fixedly communicates with an air distributing pipe; a plurality of ventilating grooves are vertically formed in the side wall of the air distributing pipe in a penetrating mode, and iron generators are fixedly arranged on the inner walls, located on the two sides of the air distributing pipe, of the purification boxes; and air outlet holes are evenly formed in the air distributing partition plate, and shutter air sending openings are formed in a box cover and provided with an air speed detecting probe and an oxygen ion content detection probe correspondingly. According to the integrated high-energy reactive oxygen ion air purification device, a specially-made air distributing system is adopted for a reaction section so that the space of the whole reaction section can be evenly filled with fresh air, the standing time is increased, then the fresh air sufficiently acts with the ion generator of the reaction section, ion gas rich in positive and negative oxygen ions is generated, and the air is purified.