67results about How to "Small wind pressure loss" patented technology

The invention provides an indoor unit of a vertical air conditioner. The indoor unit comprises a machine shell, a heat exchanger, a first cross flow fan and a second cross flow fan; the heat exchange is arranged in the machine shell; the first cross flow fan and the second cross flow fan are arranged up and down in the machine shell, vertically extend along an axis and are arranged collinearly; the machine shell comprises a framework, a bottom plate, a front upright post, a rear upright post, a left upright post, a right upright post and a shell; the framework is used for mounting the heat exchanger, the first cross flow fan and the second cross flow fan; the bottom plate is arranged below the framework and is used for supporting the indoor unit of the vertical air conditioner; the front upright post and the rear upright post respectively extends upwards from the front and rear sides of the bottom plate to the bottom end of the framework to support the framework; the left upright post and the right upright post respectively extend upwards from the left and right sides of the bottom plate to the top end of the framework to fix the framework; and the shell surrounds the outer side of the framework, the lower end of the shell extends to the edge of the bottom plate, a plurality of air outlets are formed in the front side of the shell, and an air inlet is formed in the rear side of the shell. The indoor unit of the vertical air conditioner, provided by the invention, is relatively low in fan air pressure loss and capable of saving more energy during operation and has various air supply modes, so that the user experience is improved.

Plural flaps provided in a wind-pressure shutter are located approximately parallel to a direction of an airflow path, i.e., the airflow path is opened. Thus, the wind-pressure loss of cooling wind passing through the shutter can be reduced to near zero during the normal operation of the fan. If an air-backflow flows from the exhaust vent due to a fan failure, the flap slightly inclined toward the airflow path receives wind pressure of the air-backflow on its surface, thereby swings about the support shaft to close the airflow path.

The invention provides a vertical air conditioner indoor unit. The indoor unit comprises a machine shell, a plurality of air outlets are vertically formed in a front panel, and the rear side of the machine shell is provided with an air inlet; a heat exchanger is arranged in the machine shell, a first cross flow fan and a second cross flow fan are vertically arranged in the machine shell, the axes vertically extend, the first cross flow fan and the second cross flow fan are collinear, and therefore the air is promoted to enter the machine shell via the air inlet and is subject to heat exchange with the heat exchanger to be blown out of the corresponding air outlet; an air flue assembly is erected on the circumferential outer sides of the first cross flow fan and the second cross flow fan so as to enable air to be led to the air outlets forwards from the heat exchanger, an air flue partition part is mounted on the air flue assembly and is located between the first cross flow fan and the second cross flow fan, space limited by the air flue assembly is partitioned into an upper portion and the lower portion, the first cross flow fan and the second cross flow fan are contained in the upper portion and the lower portion correspondingly, and the air flue partition part is provided with two bearings matched with a rotating shaft of the first cross flow fan and a rotating shaft of the second cross flow fan correspondingly. According to the indoor unit, the air flue assembly can be simplified, and the influence of the air flue assembly on the heat exchange efficiency of the heat exchanger can be reduced.

The invention relates to a rotary oil smoke filter which can effectively purify oil smoke in an oil smoke gas and has the characteristics of simple and easy operation, and low cost. A plurality of disk-shaped or helical filter plates which have large radial dimensions, good thermal conductivity and fast heat radiation and are prepared from oil smoke adsorption materials are connected in series to form a group, the group transversely rotates at a high speed, cuts the oil smoke, and divides purifying and processing units. So a contact and collision action of oil smoke particles with the filter plates and an oil smoke wall attachment and deposition effect can be enhanced, thereby the oil smoke condensation and deposition effect is improved, and oil smoke filtering and purifying and air cleaning can be realized; and simultaneously cases that a rang hood does not plot oil and accumulate filth, and needs no cleaning can be guaranteed through flinging condensate droplets onto wall surfaces by a centrifugal effect generated through high speed rotation and collecting the droplets. The rotary oil filter has the advantages of simple and easy operation, high efficiency and reliability, good purifying effect and low cost.

The invention discloses a countercurrent plate type dew-point indirect evaporative cooler with an internal dividing structure. The cooler comprises a dew-point indirect evaporative cooler core body arranged in a casing, wherein a wind inlet and a secondary air exhaust opening are formed in the top of the casing, and a primary air supply opening is formed in the bottom of the casing; the dew-point indirect evaporative cooler core body is composed of multiple side-by-side dry channels and wet channels spaced in parallel; a clapboard is arranged between each dry channel and the corresponding wet channel; the surfaces of the clapboards, on the dry channels, are hydrophobic surfaces, and the surfaces of the clapboard, on the wet channels, are hydrophilic surfaces; a dividing hole is formed in the lower part of each clapboard, and part of air in the dry channels enters the corresponding wet channels through the dividing holes and runs in the wet channels as secondary air, and primary air and the secondary air flow reversely; meanwhile, each channel clapboard of the cooler core body comprises a plastic base plate; and one surface of each base plate is flocked by adopting an electrostatic flocking process to obtain the clapboard with the hydrophobic surface and the hydrophilic surface, and the thickness of the clapboard is 0.1-0.4mm.

The invention discloses a range hood and a volute thereof. The range hood includes: a casing provided with a first external air exit and a second external air exit; a volute disposed in the casing, with the volute body comprising a base plate, a top plate, and a side wall plate arranged between the base plate and the top plate and being equipped with an external air outlet communicated with the first external air exit and a second external air exit; a wind wheel disposed in the casing body, with the opening direction of the external air outlet being orthogonal to the opening direction of the second external air exit; and an external switching cover plate, which is movably disposed on the volute or casing between a first position where the first external air exit is opened and the second external air exit is closed and a second position where the first external air exit is closed and the second external air exit is opened, wherein the angle alpha between the external switching cover plate at the second position and the opening direction of the second external air exit is greater than 0 and smaller than 90 degrees. According to the embodiment of the invention, the range hood has the advantages of small air volume and wind pressure loss, high wind wheel efficiency, and low pneumatic noise, etc.

The invention provides an integrated treatment method and apparatus of odor and peculiar-smell gas. The integrated treatment apparatus comprises a suspended biological absorption area, a biological filtering adsorption area and a composite active carbon adsorption area; the suspended biological absorption area receives odor and peculiar-smell gas, the odor and peculiar-smell gas enters an aerationmain pipe and an aeration branch pipe to be uniformly aerated, ammonia pollutants and sulfides in the odor and peculiar-smell gas are degraded by a mixed solution of ammonia oxidizing bacteria and nitrous acid oxidizing bacteria microorganisms; the odor and peculiar-smell gas is suspended and absorbed by virtue of a strengthened washing pump; in the biological filtering adsorption area, the substances such as hydrogen sulfide in the odor and peculiar-smell gas are degraded by virtue of heterotrophic bacteria and fungi inoculated on composite biological filler; and the composite active carbonadsorption area comprises a granular active carbon adsorption area and a honeycomb active carbon adsorption area. By adopting the integrated treatment apparatus, the odor gas is continuously treated in multiple levels in a single device to reduce the loss of air pressure and the energy consumption of the device, so that the floor occupation area of the device is saved, and the operation and maintenance expense can be reduced.

The invention relates to an air-cooled converter power module system which is modularly designed and comprises a plurality of single-bridge arm power unit modules, system alternating current / direct current busbars and an integral air duct. The system comprises the single-bridge arm power unit modules (1), a module front air duct (2), a module back air duct (3), and a low inductance cascading busbar, wherein the single-arm bridge power unit modules (1) are electrically connected by the low inductance cascading busbar formed by combining the system positive direct current busbar (4) and the system negative direct current busbar (5). In the invention, the problem that the inside of the power unit module is slightly messy due to multiple devices is solved, and the modules form a separate air duct in a space inside a cabinet, thereby ensuring the cooling capacity and the minimum wind pressure loss.

A ventilation and air change sound insulation window is composed of an inner sound insulation window, an outer sound insulation window, a sound absorption structure, air outtake mufflers and air intake mufflers. A window frame of the inner sound insulation window is flush with an internal wall face, a window frame of the outer sound insulation window is arranged on an external wall face, the sound absorption structure is arranged between an upper window frame of the inner sound insulation window and an upper window frame of the outer sound insulation window, the air outtake mufflers are arranged between the upper border of a window hole and the upper window frames, and air intake mufflers are arranged between the lower border of a window hole and lower window frames. Having a wider sound insulation frequency band and greater amount of sound insulation capacity, the mufflers have the advantages of being large in cross-sectional areas of effective sound insulation channels, low in air speed and low in air pressure loss, so that indoor air circulation can be sustained in normal circumstances, and fresh air volume requirements per capita can be met in case of normal population living indoors. The ventilation and air change sound insulation window is compact in structure and convenient to mount.

The present invention relates to a vertical rotary bed ultragravity field device, which is used for water disposing in environmental protection and for the aggrandizement of the physics and chemistry reaction in the process of atmosphere disposing. The device is also suitable to be used in the mass transfer and the reaction process of the multiphase liquid in various chemical industries. The device comprises a barrel-shaped upright shell with an air inlet arranged at the side. The middle of the shell is provided with a vertical rotating element, while the lower part of the shell is provided with a waste liquid bypass outlet. The middle of the rotating element is provided with an air guide barrel, the lower part of the air guide barrel is provided with an air inlet, while the top of the air guide barrel is connected with a demister. The side wall of the rotating element is the rotary packed bed. The whole rotating element is connected with a transmission device which provides power. The upper part of the rotating element is provided with at least three units of bearing guide pulley to form an inner inscribed circle. The rotating element rotates according to the position which is limited by the inscribed circle to bear and guide the rotation of the rotating element. As the device adopts at least three units of bearing guide pulley for supporting, both ends of the rotating element can rotate stably and reliably under the bearing, and the diameter and the volume of the rotating element can be increased. The device is used for the atmosphere disposing.

The invention provides a vertical type air conditioner indoor unit. The vertical type air conditioner indoor unit comprises a unit shell, a heat exchanger, at least one cross-flow fan, a wind guiding device and at least one swinging blade assembly. At least one circular wind outlet is formed in a front face plate of the unit shell, and a wind inlet is formed in the back side of the unit shell. The heat exchanger is arranged in the unit shell. The cross-flow fans are arranged for promoting air to penetrate through the wind inlet to enter into the unit shell, and the air is blown out of the wind outlets after the air is exchanged heat by the heat exchanger. The wind guiding device is provided with a frame arranged on the inner side of the front face plate. The swinging blade assemblies are in one-to-one fit with the wind outlets. Each swinging blade assembly comprises a plurality of swinging blades which are installed on the frame in a pivoted mode correspondingly and are parallel to each other in the longitudinal direction, and is arranged for making all of the swinging blades synchronously change the wind-out directions of the wind outlets in a pivoted mode. A wind-out structure of the vertical type air conditioner indoor unit is novel and unique, and facilitates designing and installing of the swinging blades.

The invention relates to a hot wind distributor which is used for converting horizontal inlet wind to vertical outlet wind. The hot wind distributor comprises a volute casing and a wind guiding device which is installed inside an inner chamber of the volute casing; the volute casing which is provided with a wind inlet limits the hollow inner chamber; the wind guiding device comprises a circular-ring-shaped first base plate and a circular-ring-shaped second base plate which are oppositely arranged in a parallel mode; a first taper sleeve and a second taper sleeve are arranged in central holes of the first base plate and the second base plate; a wind outlet is formed between the first cone sleeve and the second cone sleeve; a plurality of arc-shaped guide plates are arranged between the first base plate and the second base plate. The hot wind distributor has the advantages of being small in tail portion wind loss and enabling the hot wind to be uniformly and straightly distributed.

The invention relates to a drying process of bagasse charged to a boiler. The drying process is characterized by comprising the steps of: carrying out airflow separation on the bagasse charged to the boiler by using air or smoke, separating fine sugarcane bran from the bagasse, and drying the bagasse subjected to bran removal by using flue gas. The sugarcane bran subjected to air separation can be directly sprayed into the boiler for combustion or charged into the boiler after subjected to cyclone separation. According to the process disclosed by the invention, the detonation which is possibly caused by charging dried fine sugarcane bran to the boiler, because the grain fineness distribution of the bagasse charged to the boiler is wide, can be avoided, the cyclone separation load brought by full material drying is lightened, and therefore the purposes of reducing the power consumption, reducing the equipment abrasion, improving the equipment safety rate and the like are achieved.

The invention relates to an automatic stillage air-drying machine, and aims to provide an automatic stillage air-drying machine which is low in energy consumption, high in cooling efficiency, small in occupied area and convenient to use, can promote fermentation and cannot be cleaned. The automatic stillage air-drying machine comprises a stander, inclined conveyers arranged on the stander, an air supply device and a driving motor, wherein the driving motor is connected with the inclined conveyers through chain wheels and chains. The structural key point is that a plurality of inclined conveyers are arranged; and the material feeding end of the back inclined conveyer is arranged below the material discharging end of the front inclined conveyer.

The invention discloses a fan and a washing and drying integral machine, which can resolve problems that in the prior art, a dehumidifying and drying system of a washing and drying integral machine has high wind pressure loss, few air circulating times in a washing cylinder and low drying efficiency. The technical scheme is that an upper cover is arranged above a spiral casing, a turning wind passage is formed between the upper cover and the top face of the spiral casing, the inlet of the turning wind passage is adjacently arranged on one side of a wind outlet, a washing filter casing which is a straight sleeve is directly butted with a wind inlet, thereby guiding the original wind inlet to the adjacent side of the wind outlet via the turning wind passage according to adjusting wind passages, enabling wind blowing from the washing filter casing to directly enter the inlet to enter the fan via the wind inlet of the spiral casing, enabling air flow to be capable of smoothly passing through the wind passage, reducing wind pressure loss, increasing air circulating times in the washing cylinder in unit time, and further increasing drying efficiency.

The invention discloses an air conditioning system for a computer room. The air conditioning system for the computer room comprises an indoor unit and an outdoor unit set placed outside the computer room. The indoor unit is placed in a cabinet chamber and comprises a machine shell. The machine shell comprises a front door plate and a rear door plate, an upper plate and a lower plate, a left side plate and a right side plate which are arranged oppositely respectively. The rear door plate is provided with an air inlet. The front door plate is provided with an air outlet. The indoor unit further comprises a heat exchanger and cross-flow blowers. The heat exchanger is arranged in the machine shell. The cross-flow blowers are located on the side close to the front door plate. The cross-flow blowers comprise cross-flow fans, driving motors, volutes and volute tongues. The driving motors drive the cross-flow fans. Air passages are formed by the volutes and the volute tongues. The driving motors are installed on the upper plate and / or the lower plate. The volutes and the volute tongues are installed on the machine shell. According to the air conditioning system for the computer room, the technical problems that an existing air conditioning system for a computer room is too high in energy consumption and big in noise are solved. The air conditioning system for the computer room is specifically suitable for various large-scale data computer rooms.

The invention belongs to the technical field of the dust removal device used for an underground coal mine jumbolter, in particular to an integrated vacuum negative-pressure three-level dust removal system. The integrated vacuum negative-pressure three-level dust removal system solves the problem that the traditional dust removal equipment cannot satisfy the use requirement of a low-rise jumbolter. In the integrated vacuum negative-pressure three-level dust removal system, a cyclone and a dust removal tank are integrated, the dust removal tank and a power device are integrated, and three-level dust removal of cyclone dust removal, gravity dust removal and filter element dust removal is integrated in the dust removal tank. The integrated vacuum negative-pressure three-level dust removal system has the beneficial effect that the dust removal tank combines various dust removal mechanisms into a whole, and the dust removal tank and the power device are integrated into a whole. Therefore, the integrated vacuum negative-pressure three-level dust removal system is novel dust removal equipment which has the advantages of compact structure, small volume, small land occupation and light weight, is convenient to move and maintain and especially has higher dust removal efficiency for respirable dust, the reliability of the dust removal system is effectively improved, the dust removal efficiency is greatly improved, and the working environment of workers is effectively improved.

The invention discloses an odour purifying system in a livestock and poultry breeding farm and application method thereof. According to the odour purifying system in the livestock and poultry breedingfarm, an underground gas channel and a gas purifying deice are arranged in the farm, wherein the underground gas channel is used for introducing contaminated air in the farm into the gas purifying device; the gas purifying device purifies the contaminated air through a porous biological deodorant wall body, an ultraviolet disinfecting lamp and the like. According to the odour purifying system inthe livestock and poultry breeding farm and the application method thereof, the flowing direction of the air in the breeding farm is changed; the influence of harmful substances, such as ammonia and nitrogen, in the contaminated air on the livestock and poultry is eliminated; meanwhile, atmospheric propagation of the pollutants and pathogens discharged by the breeding farm is eliminated.

The invention relates to an indoor unit of a vertical air conditioner. The indoor unit comprises a machine shell, an air outlet, multiple air outlet micro holes and an air guide device. The air outlet is formed in the front side of the machine shell; the multiple air outlet micro holes are formed in the machine shell and are distributed in the outer side of the periphery of the air outlet; and the air guide device is arranged at the position of the air outlet and is used for opening and closing the air outlet and guiding the air outlet direction of the air outlet. By means of the indoor unit of the vertical air conditioner, the multiple air outlet micro holes are formed in the outer side of the periphery of the air outlet, after the air outlet is completely closed through the air guide device, air can also be sent out from the air outlet micro holes, and diversity of the air supply mode is enhanced. Due to the fact that the caliber of the air outlet micro holes is small, the air speed is small, and an effect similar to breezeless refrigerating can be achieved. In addition, due to the design of the air outlet micro holes, the total air outlet area of the machine shell is also increased equivalently, and the air supply effect is improved.

The invention relates to a motor, in particular to an efficiently-cooling motor with an axial flow draft fan. The efficiently-cooling motor with the axial flow draft fan solves the problems of low protection level, low low-speed heat-dissipating performance, large volume, heavy weight, small power and torque, low overload capacity and heat-dissipating difficulty of the conventional traction motor of the urban electric vehicles. The efficiently-cooling motor with the axial flow draft fan comprises a stator assembly, a rotor assembly, a shell, an end cover of a transmission end and an end cover of a non-transmission end, wherein a first flange is arranged at the transmission end of the shell; a second flange is arranged at the non-transmission end of the shell; the outer side end face of the second flange and the inner side end face of the end cover of the non-transmission end jointly enclose a transmission end cover air duct; and the axial flow draft fan is arranged in the transmission end cover air duct. The efficiently-cooling motor with the axial flow draft fan effectively solves the problems of low protection level, low low-speed heat-dissipating performance, large volume, heavy weight, small power and torque, low overload capacity and heat-dissipating difficulty of the conventional traction motor of the urban electric vehicles, and is applicable to traction of the urban electric vehicles.

The invention relates to the field of household appliances, in particular to a dual-drive electric hair drier, and aims to solve the equilibrium problem of electric hair drier air volume and noise. The dual-drive electric hair drier comprises a shell, a handle assembly connected to the shell, a first fan unit, a heating unit, a first air inlet and a first air outlet. The first air outlet is formedin the front end of the shell; the first fan unit is used for sucking airflow into the electric hair drier from the first air inlet and blowing out the airflow from the first air outlet to form a main air duct, and the heating unit is used for heating the airflow; the first fan unit comprises fan blades and a motor used for driving the fan blades to rotate; the first fan unit is arranged in the handle assembly, and the first air inlet is formed in the handle assembly; the electric hair drier further comprises a second fan unit arranged in the shell, a second air inlet formed in the rear end of the shell and a second air outlet formed in the front end of the shell, and the second fan unit sucks airflow to enter the shell from the second air inlet and blows the airflow out from the second air outlet to form an auxiliary air duct, thus increasing air volume.

The invention relates to the technical field of air purifiers, in particular to an air purifier with air outlets in double surfaces. The air purifier comprises a shell and an air flue fixed in the shell, wherein two air inlets are respectively formed in two sides of the lower part of the shell; two air outlets are respectively formed in two sides of the upper part of the shell; the air flue comprises a turbine casing and an air supply cavity connected to the upper part of the turbine casing; a motor is mounted in the turbine casing; a rotating shaft of the motor is connected with a bidirectional wind wheel; two sides of the bidirectional wind wheel respectively communicate with the two air inlets; the upper part of the air supply cavity is connected with an air discharge component; two air discharge channels with the same structures are symmetrically arranged on the air discharge component; and the two air discharge channels respectively communicate with the two air outlets. By the two air inlets and the two air outlets, purified air quantity is greatly increased, and the purifying efficiency is improved; the structures of the two air discharge channels of the air discharge component are symmetric and the same, so that air discharge of the two air outlets is consistent, the air speed is even, air pressure loss is small, and noises of the purifier are reduced.

The invention provides an indoor unit of a vertical air conditioner. The indoor unit comprises a machine shell, a heat exchanger, a first cross flow fan and a second cross flow fan; a plurality of vertically arranged air outlets are formed in a front panel of the machine shell, and an air inlet is formed in the rear side of the machine shell; the heat exchanger is arranged in the machine shell; the first cross flow fan and the second cross flow fan are vertically arranged and are collinearly arranged in the machine shell, the axis of each of the first cross flow fan and the second cross flow fan vertically extends in the machine shell, each of the first cross flow fan and the second cross flow fan is configured to promote air to enter the machine shell through the air inlet and be blown out through the corresponding air outlet after being subjected to heat exchange with the heat exchanger; and the rated air flow of the first cross flow fan is larger than that of the second cross flow fan, and the total open area of all the air outlets corresponding to the first cross flow fan is larger than that of all the air outlets corresponding to the second cross flow fan. The indoor unit of the vertical air conditioner, provided by the invention, is relatively low in fan air pressure loss, capable of saving more energy in operation and variable in air supply modes, so that the experience of a user is improved.

The invention is a vertical rotating bed supergravity field equipment, which is used for strengthening physical and chemical reactions between phases in water treatment and atmospheric treatment in the environmental protection industry, and is also suitable for mass transfer of multi-phase systems in various chemical industries and reaction process. It includes a barrel-shaped upright casing with an air inlet on the side, a vertical rotating body in the middle of the casing, a waste liquid return outlet at the bottom of the casing, an air guide barrel in the middle of the rotating body, and a There is an air inlet, the top of the air guide barrel is connected with the demister, the side wall of the rotating body is a rotating packing bed, the whole rotating body is connected with the transmission device that provides power, and at least three sets of supporting guides are arranged on the upper part of the rotating body The wheels form an inscribed circle, and the rotating body rotates according to the position defined by the inscribed circle to support and guide the rotation of the rotating body. At least three sets of supporting guide wheels are used to support the rotating body to rotate stably and reliably when both ends are supported, and the diameter and volume of the rotating body can be increased for the treatment of large volumes.

The invention provides a modularized combined type deodorizing device which comprises a top cover module and an I type filler module and further comprises an aerating module, a reinforced washing module, a dehumidifying module and / or an II type filler module, wherein the I type filler module comprises a fixed flange, a water supplying pipe, a humidifying spray head, an inspection manhole, a temperature-humidity sensor, a pH sensor, a gas distribution plate and a support; the II type filler module comprises a fixed flange, a support, an inspection manhole, a temperature-humidity sensor, a pH sensor, a discharging opening and a gas distribution plate; the aerating module comprises a fixed flange, a gas inlet, an aerating pipe, an inspection manhole, a water level sensor and a water drainingopening; the dehumidifying module comprises a fixed flange, a support, a baffle plate and dehumidifying filter cotton. The device disclosed by the invention can choose different modules to be overlapped and combined according to the gas amount of malodorous gas to be treated; compared with a single technology, the device is more suitable for treating the malodorous gas and has the advantages of small wind pressure loss, low energy consumption, low operation cost, small floor space, convenience in management and maintenance and the like.

The present invention discloses a photolysis oxidation oil fume purifier, which comprises a purifier main body, an oil stain filtration system, a photolysis oxidation system, a ventilation pipeline system, and a control system, wherein the purifier main body comprises a purifier housing, a maintenance observation door arranged on the front surface of the purifier housing, and a stain collection port arranged between the lower portion of the purifier housing and a stain separation plate, the oil stain filtration system comprises a tapered diversion body arranged at the inlet of the purifier, a diversion sheet, and the stain separation plate, and the photolysis oxidation system comprises a high energy ultraviolet ray lamp arranged on the inner side of the tapered diversion body, a lamp tube installation frame, and a titania coating coated inside the tapered diversion body and the purifier housing and on the stain separation plate and the lamp tube installation frame. The photolysis oxidation oil fume purifier of the present invention has characteristics of grease decomposition, smoke odor removing, excellent smoke removing pipeline disinfection effect, and easy use and maintenance.

The invention relates to the field of household appliances; for the fact that air flow is conveyed into a shell from a handle assembly, and air pressure and air volume losses are reduced as much as possible, the invention relates to an electric hair drier comprising a shell, a handle assembly connected with the shell, a main air duct extending from an air inlet of the electric hair drier to an airoutlet, a fan unit arranged in the main air duct and used for sucking air flow into the electric hair drier from the air inlet, and a heating unit used for heating the air flow; the fan unit comprises fan blades and a motor used for driving the fan blades to rotate, the fan unit is arranged in the handle assembly, the air inlet is formed in the handle assembly, and an air guide pipe used for conveying the air flow of the main air duct is further arranged in the handle assembly. Air volume and air pressure losses are reduced.

The invention belongs to the technical field of fluid machines, and particularly relates to a direction-changeable centrifugal wind wheel and a centrifugal fan thereof. The wind wheel comprises multiple blades, the blades comprise air inlet blades and air outlet blades, the multiple air inlet blades form an air inlet impeller assembly, the multiple air outlet blades form an air outlet impeller assembly, the air inlet blades are axially arranged, the air outlet blades are arranged in the circumferential direction of the air outlet impeller assembly, and the air outlet sides of the air inlet blades correspond to the air inlet sides of the air outlet blades. The centrifugal fan comprises a fan shell, a motor is arranged in the fan shell, and an output shaft of the motor is connected with thewind wheel. By means of the direction-changeable centrifugal wind wheel and the centrifugal fan thereof, free conversion between the air inlet direction and the air outlet direction of the fan can beachieved, an air duct structure is not needed, and meanwhile the beneficial effects that noise is low and air pressure losses are few are achieved.

The invention discloses a special three-stage air-distribution anti-decompression anti-coking furnace head for biomass forming fuel flue-cured tobacco. The furnace head comprises a furnace head body;an air-distribution plate is disposed on one side of the furnace head body; a first-stage air inlet and a second-stage air inlet are formed in the bottom of the air-distribution plate; a three-stage air inlet with a three-stage air distributor is disposed in the middle of the top of the air- distribution plate; and a push-pull type baffle which separates the furnace head body from an ash receivingdevice in a sealing mode is disposed at the bottom of the furnace head body. Three-stage air distribution can be achieved, meanwhile a sealed state can be achieved for ventilation and oxygen supply,sufficient oxygen supply and uniform and full combustion are guaranteed, the furnace combustion coking is effectively prevented, and the operation reliability and safety are high; meanwhile the air distribution magnitude can be flexibly adjusted, the fuel consumption is low, the heat energy utilization ratio is improved greatly, the emission load of harmful waste gases is reduced, energy is saved,the environment is protected, and the practicability is high; and the furnace head is mainly used for technical transformation of existing coal-firing flue-cured tobacco furnaces and is good in popularizing prospect.

The invention discloses a system and method for wet flue gas desulfurization and oxidation monitoring in cooperation with sulfur mixing and blending combustion of a thermal power plant, and belongs to the technical field of sulfur mixing and blending combustion of thermal power plants. The system comprises an absorption tower for desulfurization reaction, an SO2 inlet pipe, a boiler and a slurry oxidation analyzer, wherein the SO2 inlet pipe is arranged on the outer side of the absorption tower, an SO2 outlet is formed in one side of the upper end of the absorption tower, and detection equipment is arranged at the SO2 outlet; the boiler is arranged at the upstream of the absorption tower, a flue gas channel of the boiler communicates with the SO2 inlet pipe, and a furnace coal quality analyzer is arranged at the upstream of the boiler; and the slurry oxidation analyzer is arranged at the downstream of the absorption tower. According to the system, the sulfur mixing and blending combustion function is integrally guided by desulfurization, so that the desulfurization potential is excavated to the maximum extent, the actual desulfurization maximum output is found out, the sulfur content of fire coal can be further increased from a design value and determined by a blending combustion experiment, the purchasing range of the coal coming market of a power plant is enlarged, the adaptability and diversity of the fire coal are improved, economic coal with higher sulfur content is purchased, and the power generation cost is greatly reduced.