165results about How to "Guaranteed air intake" patented technology

The invention provides a cylinder head which comprises a top face, an air inlet side face, a exhaust side face, a front end face, and a rear end face. A camshaft mounting seat and a rocker support mounting boss are distributed on the top face. A through oil return passage is arranged between the front end face and the rear end face. The cylinder head is provided with a first straight oil hole vertically downwardly extending from the rocker support mounting boss and a second straight oil hole horizontally extending from the air inlet side face. The first straight oil hole is communicated with the second straight oil hole which is communicated with the oil return passage. The invention further provides an overhead camshaft engine with the cylinder head. By the cylinder head, the engine structure is compacter to further achieve miniaturization.

The invention discloses an oil-gas separator of an automobile diesel comprising a lower cavity 1, a filter element 3, an upper air accumulation housing 2 and an upper cover 5, wherein the lower cavity is connected with a mixed gas inlet adapter 11, and the bottom of the lower cavity 1 is provided with an oil outlet 12; the upper air accumulation housing 2 is connected with an outlet adapter 21; the filter element 3 is composed of a filter body 31 and a filter body bracket 32, wherein the filter body 31 surrounds the filter body bracket 32; the axial line of the inner tube wall of the mixed gas inlet adapter 11 is tangent with the circumference of the inner wall of the lower cavity; the upper air accumulation housing 2 is set in a mode that an upper bottle cap cylinder 22 and a lower bottle cap cylinder 23 are staggered and overlapped, and the inner space of the overlapped part is communicated. The invention has the advantages that the oil-gas separator can lower internal pressure of a crank case, recovers engine oil contained in gas emitted out of the crank box; the automobile emission technical standard thereof can reach European IV standard, so that the automobile protects environment, saves more energy as much as possible and is more favourable for alleviating energy shortage and protecting environment.

The invention relates to a clothes treatment device and method. The clothes treatment device includes an inner drum and an air duct structure. The inner drum comprises a rear drum wall, a side drum wall and a rib, the side drum wall is connected with the rear drum wall to define a containing cavity, a plurality of through holes communicated with the containing cavity are formed in the rear drum wall, and the rib is located in the containing cavity, installed on the side drum wall and internally provided with a hollow passage; multiple air outlets and an air inlet which are communicated with the hollow passage are formed in the side wall of the rib, and each air outlet is communicated with the containing cavity; the air duct structure is disposed outside the inner drum and includes a firstair duct, a second air duct and a baffle, the first air duct is communicated with the through holes, the second air duct is communicated with the air inlet, and the baffle can control the first air duct and the second air duct to be opened or closed. The clothes treatment device can ensure uniform drying of clothes.

The invention discloses a warm air blower for a tabletop. The warm air blower comprises a base and a fan; an air inlet is formed in the lower bottom of the base; the warm air blower further comprises a first bracket arranged above the base, a second bracket capable of rotating with respect to the first bracket, and a rail; the first bracket comprises a locating ring, a first shell and a first air outlet cover; the first shell is of a hollow cylinder of which the bottom end and the top end are opened, and a first air outlet is formed in the first air outlet cover; the second bracket comprises a second shell and a second air outlet cover, the second shell is of a hollow cylinder or which the bottom end is opened and the top end is closed; the second shell is arranged between the locating ring of the first bracket and the first shell in a fitting manner, and a second air outlet is formed in the second air outlet cover; a heating element is arranged in a cavity formed by the first shell and the second shell. The ait outlets of the two brackets can be closed or opened for meeting the usage requirements of one or two persons, and electronic equipment and the like for watching further can be arranged between the two air outlets, so the variety of function of the warm air blower is improved.

The present invention is a split wall-hanging type air conditioner indoor machine. The indoor machine includes a substrate and an outer cover component (1). The outer cover component (1) is disposed with a panel (2) which can be driven to open and close by a drive mechanism. The drive mechanism includes a drive motor (3), a gear group and a rack (5) mounted on the outer cover component (1). The gear group is connected with the output shaft of the drive motor (3). One end of the rack (5) is engaged with the gear group, and another end is connected to the panel (2). The rack (5) is inserted into corresponding slide track (61) or slide groove on the outer cover component (1) through the slide groove or slide track on the rack. The panel of the present invention is designed with no grid and can be automatically closed and move vertically. So the appearance of the air conditioner is improved and the air input amount is ensured, and dust and other substances can be prevented from entering the internal part of the air conditioner under turn off state, thereby the performance of the air conditioner can be ensured.

The invention discloses a cabinet air conditioner and an air outlet control method thereof, wherein the cabinet air conditioner comprises a housing, a positive air outlet structure and a top air outlet structure; the housing is cylindrical; at least one flue is formed in the housing; a fan and a heat exchanger are mounted in the flue; the positive air outlet structure is fixedly arranged in the housing, is positioned above the fan, and is equipped with a front air outlet; the top air outlet structure is arranged at the upper end of the housing and is equipped with a top air outlet; the top air outlet structure is connected with a first rotary structure; the first rotary structure drives the top air outlet structure to rotate; the positive air outlet and the top air outlet are positioned at the air outlet side of the housing while being in an air outlet state; an air inlet structure is arranged at the air inlet side of the housing; the air outlet structure is positioned at the lower end of the housing; and an angle alpha surrounding the circumferential direction of the housing is greater than or equal to 120 degrees, and smaller than or equal to 180 degrees. According to the technical scheme adopted by the invention, the temperature of indoor air effectively and quickly reaches a set temperature; and meanwhile, heat exchange efficiency is strengthened, so that the cabinet air conditioner is more convenient to mount.

The invention discloses a mobile modular gas turbine power station. The mobile modular gas turbine power station is formed by connecting a first vehicle, a second vehicle and a third vehicle, the first vehicle comprises a gas turbine power system, a transmission system and a semitrailer chassis system, the gas turbine power system comprises a starter, a gearbox, a high-speed coupler and an engine,the transmission system is composed of a low-speed coupler, a first bearing, a transmission shaft, a second bearing and a flexible coupler, and a second vehicle power generation and distribution system comprises a generator, a generator installing base, a generator power shaft and a power distribution cabinet. According to the mobile modular gas turbine power station, a gas turbine is adopted asa prime mover, a power generation system composed of the gas turbine is compactly integrated on a movable chassis, and by adopting a combined mode, the power system, the power generation and distribution system and an exhaust system are correspondingly placed on different mobile carrier platforms, so that modular assembly is realized, and meanwhile, an independent exhaust noise reduction system isadopted for carrying out exhaust heat dissipation and high-frequency noise reduction on the gas turbine.

The invention discloses a biomass particle furnace which comprises a shell, a feeding device (1), a combustion device (2), a water circulation system, a control system (3) and an operation panel; thefeeding device (1) and a box body (21) of the combustion device (2) are both in a cylinder shape and rotate perpendicular to the ground plane by taking shafts of cylinders as rotation axes; an unloading groove (12) is divided into a plurality of unloading bins (122) by unloading bin partition plates (121); the box body (21) of the combustion device (2) is divided into 3-12 combustion cavities (211) by combustion cavity side walls (2111); openings of the unloading bins (122) and the combustion cavities (211) all face outwards; and the lower side of an outlet of an unloading passage (13) of thefeeding device (1) is the uppermost position of the box body (21). The invention provides the biomass densified biofuel combustion furnace which is automatic in unloading without blocking, full in combustion, timely in cleaning cokes and dust, efficient in running and relatively long in service life.

The invention discloses a bi-directional suspension type indoor air purification device. The bi-directional suspension type indoor air purification device structurally comprises a main machine body, an air pump operation automatic control system, an air inlet, bottom supports, a filter disassembling bin gate, a control panel, a control button, a flowmeter, a pressure gage, a main machine body shell, a filter screen, and a communicating pipe; the front portion of the main machine body is fixedly provided with the air inlet; the rear portion of the air inlet communicates with the communicating pipe; the right portion of the communicating pipe is provided with the filter screen; the air inlet is fixed on the front portion of the main machine body through a bolt; the bottom of the main machinebody is fixedly provided with two bottom supports; the bottom supports are of a rectangular structure; when the device works normally, the speed of an air pump can be effectively adjusted; when too much dust accumulate on an air strainer and the air flow is affected, the speed of the air pump can be automatically increased under the action of the air pump operation automatic control system, thereby ensuring the air inflow, the handling capacity of the device is ensured, the processing efficiency of the device is improved, and the working stability of the device is enhanced.

The invention relates to an indoor air-conditioning unit of a novel structure and aims to solve the problem that a conventional indoor air-conditioning unit is inconvenient to overhaul as relevant parts of the conventional indoor air-conditioning unit are fixedly positioned. The indoor air-conditioning unit provided by the invention comprises a machine body and further comprises an electric appliance box body, wherein the electric appliance box body is movably arranged inside the machine body. Through the movable arrangement of the electric appliance box body in the indoor air-conditioning unit, the corresponding overhaul operation can be performed after the whole electric appliance box body is moved out of the machine body once the electric appliance box body of the indoor air-conditioning units needs to overhaul, thereby facilitating the operation of overhaul personnel.

The invention discloses an efficient generator unit with two cooling air ducts. The efficient generator unit with the two cooling air ducts comprises a unit shell and an engine type generator. The engine type generator comprises an engine cooling air channel and a motor cooling air channel. An air inlet of the engine cooling air channel is formed in a starter pull disk. An air outlet of the engine cooling air channel is formed in a muffler air outlet rubber cover. A cylinder head and a muffler are arranged in a closed channel formed between the air inlet and the air outlet of the engine cooling air channel. Air inlets of the motor cooling air channel are formed in the top, the side face and the bottom of an engine case cover respectively. An air outlet of the motor cooling air channel is formed in a motor end cover. A cooling fan and a motor are arranged in a closed channel formed between the air inlets and the air outlet of the motor cooling air channel. Blades of the cooling fan are of an arc-shaped cover structure. The two cooling air channels are independent of each other, so that the air channels is simplified, arrangement of the air channels is optimized, and the number of parts is reduced; the blades of the cooling fan are of the arc-shaped cover structure, so the air supply amount is increased, and the cooling effect of the generator is improved jointly.

The invention provides a control method and a control device of an air conditioner, and the air conditioner. The control method comprises the following steps of comparing the distance from an air inlet of the air conditioner to an air inlet obstacle with a first preset threshold value; if the distance from the air inlet of the air conditioner to the air inlet obstacle is smaller than the first preset threshold value, determining regulating parameters of the rotating speed of an indoor fan of the air conditioner and the operation frequency of a compressor according to the distance from the air inlet of the air conditioner to the air inlet obstacle; according to the regulating parameters of the rotating speed of the indoor fan of the air conditioner and the operation frequency of the compressor, updating default parameters of the rotating speed of the indoor fan of the air conditioner and the operation frequency of the compressor. The default parameters of the rotating speed of the indoor fan and the operation frequency of the compressor can be flexibly regulated according to the distance from the air inlet of the air conditioner to the air inlet obstacle, so that the air inlet quantity of the air conditioner can be effectively ensured; the influence of the practical installation distance on the heat exchange performance is reduced; the occurrence of unnecessary machine halt protection is avoided.

The invention discloses a supercharged inter-cooling internal combustion engine gas intake bypass control device. The supercharged inter-cooling internal combustion engine gas intake bypass control device comprises an air filter (1), an equal-diameter three-way pipe (2), a loop pipe assembly (3), a gas compressor (4), an intercooler (5), a voltage stabilization cavity (6), a throttle valve (7) and an internal combustion engine air cylinder channel pipe (8). The equal-diameter three-way pipe (2), the loop pipe assembly (3), the gas compressor (4), the intercooler (5), the voltage stabilization cavity (6), the throttle valve (7) and the internal combustion engine air cylinder channel pipe (8) are sequentially connected with the air filter (1). A circulating pipe (9) is connected between the loop pipe assembly (3) and the voltage stabilization cavity (6) and provided with a bypass valve (10). The supercharged inter-cooling internal combustion engine gas intake bypass control device has the beneficial effects that the device structure is simple, and the installation cost is low; transformation is conducted under the condition that mechanical components of an internal combustion engine set are not changed, and the controllable variation range of gas inflow is large; the application range is wide, the fitness is high, and the phenomenon of unstable running is avoided.

The invention relates to the technical field of heat transferring, in particular to a heat insulating coating. The heat insulating coating comprises a heat insulating layer and a heat isolating layer. One side of the heat isolating layer is connected with the inner surface of a piston combustion chamber, and the other side of the heat isolating layer is coated with the heat insulating layer. The heat isolating layer comprises a foam metal framework and stuffing. Holes of the foam metal framework are filled with the stuffing. The inside porous structure of the foam metal framework of the heat isolating layer is arranged and used, and the stuffing with the characteristics of low heat conductivity and low heat capacity is fixed in the holes, so that the heat insulating coating has the good following performance to the environment, the negative effects of the continuous high-temperature surfaces of common heat insulating materials to the air exchange process are overcome, the requirement that the heat insulating coating of which the coating surface temperature is capable of rapidly adapting to environment changes of an internal combustion engine working in an intermittent mode is met, heat carried away by internal combustion engine cooling is reduced, the heat loss in the combustion chamber is reduced, the heat efficiency of the internal combustion engine is improved, and the air inlet amount and power output of the internal combustion engine are ensured; and the foam metal framework is used by the heat isolating layer, the heat load of high temperature parts is reduced, and the service life of the internal combustion engine is prolonged.

The invention relates to an air intake end shield of a generator set, which is characterized in that the edge of an end plate is convex inwards to form a shield wall, and a wind box surrounding an air-inlet grille is arranged at the inner side of the end plate. The wind box is internally provided with an air-inducing chamber which divides the air-inlet grille into an upper group and a lower group. The wind box comprises a wall plate and a cover plate, wherein, the cover plate is fixed on the flange of the wall plate, and the lower parts of the two sides of the wall plate are respectively provided with air outlets. Wind shields are arranged between the air outlets and the air-inlet grille. The cover plate is provided with a ventilation opening which is connected with the air-inducing chamber. The wind box can play the role of an acoustic shield, noise in the generator set is transmitted from the air-inlet grille after passing through the sound insulation of the wind box, and therefore the noise can be effectively lowered. As the end plate and the shield wall are adopted to form a mantle, both the strength and rigidity of the mantle are enhanced; as the air-inducing chamber is arranged inside the wind box, fresh air can be provided to the engine and the air input of the engine is guaranteed.

The invention relates to an air filter assembly. The air filter assembly comprises a shell (1), a first impeller (22), a second impeller (23), a first rotating shaft (24), a first impeller cover (25),a second impeller cover (26), a filter element (2), a scraping blade (4) and a connecting pipe (27). The filter element (2) is rotatably connected with the shell (1), one end of the scraping blade (4) is connected with the shell (1), the other end of the scraping blade (4) is tightly attached to the peripheral wall of the filter element (2), a driving mechanism capable of driving the filter element (2) to rotate is arranged in the filter element (2), and a first air outlet (31) and a second air inlet (9) are communicated through a connecting pipe (27). The air filter assembly has the beneficial effects that on the basis of saving energy and protecting environment, in the use process, dust, sand dust and other dirt on the surface of the filter element can be cleaned and absorbed, the filter element is not prone to being stained, the air inlet amount of an engine is ensured, the engine can stably and normally work, and the service life of the filter element is greatly prolonged.

The invention relates to the field of mechanical generating equipment and discloses a generator set with a super-long maintenance period. The generator set with the super-long maintenance period comprises an outer box and a base, wherein an intelligent remote super-long maintenance module, a set control cabinet, a generator set, a machine oil supply pump, a machine oil circulating pump and a machine oil level control box are arranged inside the outer box on the base; the base is also provided with a machine oil box, a used machine oil box, a diesel oil box and a machine oil box inspection door; the intelligent remote super-long maintenance module is provided with a module for reading and storing set working hour information, machine oil level information and maintenance time information; the machine oil level control box is internally provided with a float ball; and a pipeline of the machine oil circulating pump, connected with the machine oil level control box, is also connected with a machine oil filter in series. The invention aims at providing the generator set with the super-long maintenance period; the maintenance period of the generator set is prolonged under the condition that the normal work of the generator set is not influenced; and the maintenance period of the generator set provided by the invention is prolonged by at least 4-5 times than that of the existing generator set.

The invention discloses an airflow silencing and guiding device for an aerodynamic device. The airflow silencing and guiding device for the aerodynamic device comprises a flow guiding mechanism and asilencing mechanism. The flow guiding mechanism comprises multiple grades of flow-guiding and silencing cones, a locating support assembly, a protective cover and a butt flange. The multiple grades offlow-guiding and silencing cones are vertically overlaid and in clearance type distribution. The locating support assembly comprises multiple supporting rods and a joint ring. The protective cover covers the multiple grades of flow-guiding and silencing cones. The lower end of the butt flange is connected with the silencing mechanism. The silencing mechanism comprises a silencing body and a silencing cylinder. The silencing body is located in the silencing cylinder, and an interval exists between the silencing body and the silencing cylinder and forms a ventilation channel. Airflow is fed into the protective cover from the periphery via ventilation holes on the protective cover, after the airflow passes by the flow-guiding cones, annular airflow is formed and rapidly enters the ventilation channel, and when the airflow passes through the ventilation channel, by means of the silencing cylinder and the silencing body which constitute the two sides of the ventilation channel, noise is effectively lowered.

The invention belongs to the technical field of air inlet mechanisms, and particularly relates to an air inlet mechanism used for a piston compressor. By aiming at the problem of a small air inlet quantity, the invention now puts forward the following scheme that the air inlet mechanism comprises an air inlet box, wherein the outer wall of the top of the air inlet box is connected with an air guiding pipe through a flange; the outer wall of one side of the air inlet box is provided with air inlets which are distributed at equal distances; the air inlet box is of a structure of which two ends are small and the middle is big; the diameter of each air inlet is 3-6 mm; and the air inlets are positioned in the middle of the air inlet box. The air inlet mechanism is provided with semiconductor refrigeration sheets, a motor, a rotary rod, stirring rods and connecting rods, when the semiconductor refrigeration sheets are started, a temperature value in the air inlet box can be lowered, pressure intensity is caused to be lowered to accelerate speed for air to flow into the air inlet box, and the air inlet quantity is increased in equal time. A motor is started, the motor drives the rotary rod to rotate, the stirring rods are of wave-shaped structures with different shapes, vortexes of different shapes can be generated, and cold air generated by the semiconductor refrigeration sheets canbe mixed.

The invention discloses a filter screen of an exhaust hood. The filter screen is characterized in that the filter screen is in the shape of a hollow frame with an opening in the top face; the bottom of the filter screen is in the shape of a flat plate; the edge of the top face of the filter screen is used for being arranged on the periphery of an air inlet of an exhaust fume collecting hood of the exhaust hood; and multiple holes which are distributed at intervals and extend in the longitudinal direction are formed in all side faces of the filter screen to form air inlet passageways. The filter screen with the flat-plate-shaped bottom is arranged, and therefore the condensation and partial grease separation function is achieved for cooking fume, meanwhile, the grease dripping from cooking fume passageways and impellers of draught fans can be collected, and it is avoided that the grease drips into cookware below; the cooking fume enters the air inlet of the exhaust fume collecting hood from the periphery of upper portion of a bottom plate, and the air inlet amount is ensured; and a sound absorption device is arranged in the filter screen, outward irradiation of noise of the draught fans can be reduced, and the aim of noise reduction is achieved.

A soft soil foundation treatment method is disclosed. The method includes following steps: performing foundation surface treatment; inserting a vertical drainage pipeline and a vacuum exhaust air pipeline; mounting a drainage pipe and a vacuum pump; performing covering with sealing films; vacuumizing and draining water; removing the sealing films and the vacuum pump; grouting the vertical drainagepipeline; after grout is coagulated, filling a cavity left in the vertical drainage pipeline with quick lime; and finally backfilling with dried soil for top sealing. Through the abovementioned arrangement, water is separated by utilizing the vertical drainage pipeline in a vacuum environment, middle-layer water of a soft soil foundation can be substantially completely removed, and the bottom ofthe soft soil foundation is grouted to reinforce the deep-layer foundation and to block upward water penetration paths, thus reducing adverse influences of water on the foundation. The quick lime is buried in a shallow layer of the soft soil foundation and can fully absorb water in the shallow layer, so that overall water removing of the soft soil foundation is more completely.

The invention relates to an air conditioner shell, an air conditioner with the same, and a control method of the air conditioner. The air conditioner shell comprises a shell body and air inlet plates.Air inlets are formed in the different surfaces of the shell body correspondingly, included angles are formed between the air inlet directions of the different air inlets, each air inlet is providedwith the corresponding air inlet plate, and each air inlet plate can move to the position where the corresponding air inlet of the air inlet plate is closed and opened. According to the air conditioner shell, the air conditioner with the same, and the control method of the air conditioner, air enters the air conditioner from the different air inlets in the different air inlet directions, on one hand, the air inlet volume of the air conditioner is ensured through the number of the air inlets, on the other hand, the concentration degree of impurities in the air can further be reduced through theair inlets having the included angles, and accordingly, the refrigerating or heating efficiency of the air conditioner is improved; and when the air conditioner stops operating, the air inlet plateson all the air inlets can completely prevent the impurities in the air from entering the air conditioner through the air inlets, and when the air inlet plates are closed, the attractiveness of the airconditioner can further be ensured.

The invention discloses a sand-preventing dust-filtering filter unit. The filter unit comprises a frame body with a ventilation channel, a filter and a flow divider, wherein the frame body comprises an air inlet side and an air outlet side which are oppositely arranged and communicate with the ventilation channel; the flow divider is arranged far away from the air inlet side and divides the exhaust side of the frame body into a clearing flow channel and a main flow channel; the filter comprises a sand prevention module and a dust prevention module which are obliquely arranged in an airflow direction; the sand prevention module is used for colliding with sand and dust in dust-containing airflow flowing into the ventilation channel so as to allow the sand and the dust in the dust-containingairflow to flow into the clearing flow channel and to be discharged under the action of collision rebound and inertia force of the sand and the dust and the wall surface; and the dustproof module is arranged on the air outlet side of the sand control module, so the airflow filtered by the sand prevention module is subjected to secondary filtration, and the airflow having undergone secondary filtration flows into the main flow channel. The invention further discloses a helicopter. According to the sand-preventing dust-filtering filter unit, the replacement and cleaning frequency of the dust prevention module is reduced, and maintenance cost is low.

The invention discloses an industrial dust-proof mask. The industrial dust-proof mask comprises a mask, wherein a head strap is arranged on the mask, a breathing cavity is formed in the mask, a dust removing device is arranged in the breathing cavity, a filtering device is arranged on the right side of the dust removing device, and an air sucking device is arranged in the breathing cavity. The mask is simple in structure and convenient to operate; the device can be used for guaranteeing the air inlet amount required by personnel breathing by actively sucking air and intermittently cleaning dust on a filter screen; and part of energy is recycled to prolong the service life of the mask, so that the mask has high use and popularization values.

The invention discloses an indoor unit for an embedded air conditioner. The indoor unit comprises an indoor unit main body, a panel body, an air-inlet grille and a fan; a fan protector is arranged between the fan and the panel body; the fan protector is provided with a plurality of ventilating holes. The invention also discloses an embedded air conditioner. The embedded air conditioner comprises the indoor unit for the embedded air conditioner. The fan protector is arranged between the fan and the panel body of the indoor unit for the embedded air conditioner, so that the panel body or the air-inlet grille can be detached under the condition that the indoor unit of the embedded air conditioner does not stop, the fan is protected by the fan protector in the whole process, foreign bodies cannot enter the fan, the fan cannot be damaged, safety accidents are avoided, the service life of the fan is prolonged and the safety is improved; moreover, the fan protector is provided with the ventilating holes, so that the air inlet volume of the fan is ensured, and the normal work of the indoor unit for the embedded air conditioner is ensured further.

The invention provides a three-dimensional air supply wind wheel which comprises a wind wheel body. The middle of the front side face and the middle of the rear side face of the wind wheel body are in an umbrella shape which protrudes forwards in the axial direction as a whole. A boss is formed on the front side face, and concave cavities for accommodation are formed on the rear side face. The three-dimensional air supply wind wheel sucks air in a turbine mode and supplies air in a centrifugal mode, and a wind wheel type DC fan comprising the wind wheel has the advantages of being low in noise, low in wind resistance and large in air volume. The invention further provides a three-dimensional air supply mask comprising the wind wheel. The three-dimensional air supply mask has the technical advantages of being light, thin, low in noise, stable in fixation, and convenient to assemble and disassemble.

The invention discloses an air conditioner indoor unit and a control method thereof and relates to the technical field of air conditioners. Under a condition that a relatively small space is occupied,the air conditioner indoor unit can simultaneously realize an air ventilation function and a purification function; meanwhile the air conditioner indoor unit can also realize an air ventilation function only. The air conditioner indoor unit comprises an air conditioner indoor unit housing and a fresh air purifying module which is arranged inside the air conditioner indoor unit housing; the freshair purifying module comprises a fresh air channel, a purified air channel and an air guide channel; a draught fan is arranged inside the air guide channel; the air guide channel comprises a first opening and a second opening; the first opening communicates with the inside of a room through the purified air channel and communicates with the outside of the room through the fresh air channel; the second opening communicates with the inside of the room; the draught fan can rotate forwards and backwards; when the draught fan rotates forwards, the air flow inside the air guide channel flows from the first opening to the second opening; and when the draught fan rotates reversely, the air flow inside the air guide channel flows from the second opening to the first opening.

A range hood provided by the invention comprises a front dynamic filter screen arranged on an output shaft of a double-shaft motor and located between a centrifugal wind wheel and a concave edge of afront oil guide ring, the distance between the concave edge of the front oil guide ring and the centrifugal wind wheel is L1, and the value of the distance L1 from the front dynamic filter screen to the centrifugal wind wheel is [0.45 L1, 0.85 L1]. When the range hood works, the air with the lampblack and sucked by the front oil guide ring impacts the front dynamic filter screen under the guide action of the concave edge of the front oil guide ring, part of air is blocked by the dynamic filter screen and moves towards the periphery of the dynamic filter screen along the surface of the dynamicfilter screen. The air moving along the surface of the dynamic filter screen continuously penetrates through the filter screen to enter a volute during the moving process, and finally a certain amountof air still passes through a gap between the front dynamic filter screen and the inner wall part of the front oil guide ring. In the scheme, the value of the distance L1 from the front dynamic filter screen to the centrifugal wind wheel is [0.45 L1, 0.85 L1], AND the air volume passing through the space between the front dynamic filter screen and the inner wall of the front oil guide ring can beadjusted, so that the noise generated by work of the front dynamic filter screen is lowered.

The invention provides a marine turbocharger bearing body with a rotation stopping function. The marine turbocharger bearing body comprises a bearing body, a rotation stopping device, a rotation stopping sleeve, a sealing cover plate and a rotation stopping elastic split retainer ring. The rotation stopping device is mounted in a first rotation stopping device mounting hole and a second rotation stopping device mounting hole on the bearing body; the rotation stopping sleeve is mounted in the first rotation stopping device mounting hole on the bearing body and is sleeved on a rotation stopping bracket of the rotation stopping device; the rotation stopping elastic split retainer ring is mounted in a retainer ring groove on the inner wall of the first rotation stopping device mounting hole; the rotation stopping elastic split retainer ring has the effect that the end face of the rotation stopping sleeve is tightly pressed by the end face of the rotation stopping elastic split retainer ring, and the other end face of the rotation stopping sleeve is used for tightly pressing the rotation stopping device, so that the rotation stopping sleeve and the rotation stopping device are fixedly arranged on the corresponding positions of the bearing body; the sealing cover plate is mounted on an opening of the first rotation stopping device mounting hole on the bearing body by a screw.

The invention discloses a nano-film air purification window. The nano-film air purification window comprises a window frame, and is characterized by also comprising a supporting net, a nano-film filter layer, a plurality of separation plates and miniature air inlet fans, wherein the supporting net is arranged on the outer surface of the window frame; the outer surface of the supporting net is coated with the nano-film filter layer; the nano-film filter layer and the supporting net are connected with the edges of the window frame respectively; the separation plates are arranged in the window frame, are distributed in a criss-cross manner and are used for separating the window frame into grids matched with outer frames of the miniature air inlet fans; the grids are arranged in a two-dimensional array; each miniature air inlet fan is arranged in the corresponding grid and is connected with the separation plate. Fine particles in air can be filtered and purified through the nano-film filter layer; when the fans are started, resistance to air flowing caused by the nano-film filter layer can be eliminated by the fan array, so that the flowing speed of the air from the outside to the inside is increased, and the inlet amount of indoor clean air is increased. The nano-film air purification window has the advantages of simple structure, convenience in use, air purification, energy conservation, and consumption reduction.