49results about How to "Increase the exhaust air volume" patented technology

The invention relates to a roof exhaust fan. The invention is used for resolving a problem that the angle of a blind is increased to expand air displacement. Right and left blinds (7, 8) of each butterfly blind(6) are broken up into an inner side(7a, 8a) and an outside side(7b, 8b), which are linked with hinges(9, 9) in order to extend the inner side(7a, 8a) and the outside side(7b, 8b), and a spring(10) with suitable flexibility leans in order to extend.

The invention discloses a multi-core-driven multi-stage booster combined fire-extinguishing and smoke-controlling device which comprises a carrier. The carrier is provided with a rotating lifting mechanism which is fixedly provided with a combined exhaust blower group, the carrier is also provided with a control system which is connected with the combined exhaust blower group formed by assemblingand fixedly mounting six exhaust blowers together, and the six exhaust blowers are arranged up and down and integrally combined in two rows with three exhaust blowers in a row and share an outer air duct, a water supply pipeline and a water mist nozzle. The multi-core-driven multi-stage booster combined fire-extinguishing and smoke-controlling device of the invention has great exhaust air rate incase of a certain volume.

The invention discloses an integrated window-type air conditioner. The air conditioner comprises an indoor panel, a cabinet, an evaporator, an indoor fan, a condenser, an outdoor fan, a volute, a compressor and a base plate, wherein the volute comprises a fixed volute and a rotatable volute; the fixed volute forms a cambered surface which semi-encloses the outdoor fan in the cabinet; the rotatable volute is connected to a lower section base plate and rotates by taking a connection position as a rotating shaft; and the lower section base plate is provided with an outdoor vent hole. When the rotatable volute is folded, the outdoor vent hole is enclosed; when the rotatable volute is unfolded, the fixed volute and the rotatable volute form a continuous volute inner surface and heat-exchanged air is guided to flow outwards from the outdoor vent hole. The folded volute occupies a smaller space in the cabinet, so that the overall height of the outdoor side cabinet is reduced and transportation cost is saved. The unfolding degree of the rotatable volute is determined according to the practical indoor condition, so that the air supply volume and air exhaust volume in the cabinet can be adjusted freely according to the practical condition and the running state of the air conditioner is optimized.

A range hood and its series fan system, control method, connectors, and fan system, the series fan system for range hoods includes: a first fan; a second fan; a connector, the two ends of the connector are respectively connected to the second The air outlet end of the first fan and the air inlet end of the second fan; the connecting piece includes a control switch, which is used to detect the fluid characteristics of the detection points in the connecting piece, and control the working state of the second fan according to the fluid characteristics, so that the second The blower opens with the opening of the first blower, and closes with the close of the first blower; the connecting piece also includes a throat, the opening cross-sectional size of the throat is smaller than the opening cross-sectional size of other parts of the connecting piece, and the detection point is located between the throat and Between the outlet ends of the first fan. The technical solution provided by the invention can simplify the installation method of the second fan without changing the first fan, and the two fans can work in linkage, and can effectively improve the working efficiency of the entire series fan system.

The invention provides a temperature-controlled purification device with superimposed air volume, comprising: a first box body, the first box body is provided with a first air inlet and a first air outlet arranged on the top of the first box, and the inside of the first air inlet is installed with Filter screen, the first box is equipped with an oxygen generator for inputting oxygen and the first row of fans aligned with the first air outlet; the second box is detachably stacked on the first box, and the second box is opened There are a second air outlet and a plurality of second air inlets, the position of the second air inlet corresponds to the position of the first air outlet, the inside of the second air outlet is installed with a filter, and the second box is equipped with a second The second exhaust fan at the air outlet and the refrigeration device for cooling or heating the air; and the air volume amplifying device for increasing the suction air volume of the second air inlet are installed at the second air inlet. The invention solves the problems that the traditional air purifier has poor comfort of purified air and few applicable occasions.

The invention discloses a constant-air-volume control method for a range hood. According to the method, the number of all internally-arranged gears of an indoor unit is x, and the default initial gearof a high gear air volume interval [ Q1, Q2 ] is x / 2; when the operating gear of an indoor range hood is equal to x and the air volume is smaller than Q1, target air volume is reduced from [ Q1, Q2 ]to [ q1, q2 ], so that the gear is reduced, and noise is reduced; and when the target air volume is in the interval [ q1, q2 ], the number of the operating gear is smaller than x-2, the target air volume is changed from [ q1, q2 ] to [ Q1 and Q2 ], so that the air volume is increased, and the oil fume suction effect is improved. The method has the advantages that a constant-air-volume control method of the range hood is applied to a central flue system; from the point of reducing noise, when the start-up rate is extremely high, the air volume interval is properly reduced, a bit of the oil fume suction effect is sacrificed, so that the noise is reduced; the air exhaust amount of high floors is reduced, so that the flue exhaust power of low floors is increased, and the air exhaust volume ofthe low floors is increased; and meanwhile, the air volume of all the floors is ensured to be balanced and capable of meeting the flue exhaust requirement, so that the use experience of users is good.

The invention provides a manufacturing method of an axial flow turbo-charging fan. The axial flow turbo-charging fan is low in volume, large in air output, volute-free, multi-air-duct and ultra-low-noise, and the volume of the axial flow turbo-charging fan cannot be increased along with increase of the air output. The structural design of a multi-air-duct internal-absorption axial flow turbo fan is most obviously characterized in that: an internal space of a turbo is fully utilized; more than two layers of fan blade rings are arranged; each layer of fan blade rings is formed by ring-like distribution of angular fan blades in a tilting state, wherein the cross section of each angular fan blade is shaped like a right angle substantially; air is absorbed from the outside and bottom of the turbo in an internal-absorption mode and then discharged vertically; and over 50 percent of the quantity and effective area of the fan blades are increased. In the field of a fan-top smoke exhaust ventilator, the fan has the advantages that: a volute is not used, the volume is low, and the air output is large, so that the resonation vibration noise of a cavity of the volute cannot be generated; a large lateral air intake space is not required to be formed between the side of the fan and an outer cover; the width and depth of an upper cover of the smoke exhaust ventilator are quite small; axial flow air draft and discharge modes are kept, so that wind resistance is small, and ventilation efficiency is high; and the fan is light-weight, and materials are saved.