112results about How to "Sufficient air volume" patented technology

Blades are provided on a fan body such that an outer diameter d2 of the fan body is in a range of 45 mm≦d2≦50 mm, an axial height h1 at a substantially intermediate position of the blade is in a range of 0.2≦h1 / d2≦0.3 with respect to the outer diameter of the fan body, and an axial height h2 at an outer peripheral edge of the blade is in a range of 0.12≦h2 / d2≦0.17 with respect to the outer diameter d2 of the fan body.

A movable laboratory with high biological safety is composed of primary experiment cabin, person cleaning and technological supporting cabin including clothes exchanging room, buffering room and substance transfer window between them, air-tight flexible connection channel between said both cabins, and the connected water and air pipelines, cables and signal lines.

The invention relates to an outdoor unit of a heat pump type air conditioner. The outdoor unit comprises a shell and a compressor, a heat exchanger and a fan system arranged in the shell. The shell is provided with a first air inlet and an air outlet, the air outlet is corresponding to the fan system, the first air inlet is corresponding to the heat exchanger. The invention is characterized in that: the outdoor unit also comprises a compressor waste heat collection device, the shell is also provided with a second air inlet on the position corresponding to the waste heat collection device; when the outdoor unit works, the waste heat collection device preheats the air which enters through the second air inlet and conveys the preheated air to a plenum box which covers outside the heat exchanger through a heating pipeline, so that the mixed air of the outside air from the first air inlet and the preheated air from the heating pipeline enters into an inner cavity of the plenum box. Compared with the prior art, the outdoor unit improves the air temperature of the heat exchanger so as to avoid frosting of the heat exchanger and overcome the defect that the prior air conditioner needs to close down twice to defrost the heat exchanger to affect the heating effect.

The invention provides a heating pot capable of increasing the heating efficiency. The heating pot includes a pot body and a cover, the cover comprises a heating element, a centrifugal fan and a windguiding piece arranged in the circumferential direction of the centrifugal fan and used for guiding airflow. According to the scheme, since the wind guiding piece is arranged in the circumferential direction of the centrifugal fan or below the centrifugal fan, the heating air can be blown out of the centrifugal fan, and then blown to food in a spiral blowing mode after flowing through the wind guiding piece, and therefore a three-dimensional heating effect on the food can be achieved, and the heating efficiency and the heating uniformity of the food are improved.

A multi-cyclone collector includes a suction port for sucking an air flow including contaminating particles, a cyclone accommodation chamber allowing the air flow sucked through the suction port to be guided thereinto, a plurality of cyclones each accommodated in the cyclone accommodation chamber, for transforming the air flow taken in to a downward swirl flow, separating the contaminating particles, then reversing the swirl flow to the upward swirl flow and releasing the upward swirl flow as a purified air flow, a cyclone exit chamber provided above the cyclone accommodation chamber, that allows the purified air flow from the cyclones to be guided thereinto, and a drain discharge chamber provided below the cyclone accommodation chamber, for collecting the contaminating particles separated by the cyclones.

The invention belongs to the technical field of kitchen ventilators, and provides a constant-air-volume output control method and a constant-air-volume output control system for a kitchen ventilator. The constant-air-volume output control method comprises the following steps of generating a corresponding air volume control command when receiving a user control command in a working process of the kitchen ventilator; detecting running diameters of a motor; judging whether the current exhaust air rate of the kitchen ventilator conforms to the air volume control command or not according to the running diameters and a constant-air-volume algorithm model; controlling the motor to run if the current exhaust air rate of the kitchen ventilator conforms to the air volume control command; generating a running parameter command of the motor if the current exhaust air rate of the kitchen ventilator does not conform to the air volume control command; controlling the motor in the kitchen ventilator to run according to the running parameter command of the motor; and detecting the running parameters of the motor. After the running parameters of the motor are adjusted circularly and repeatedly, the exhaust air rate of the kitchen ventilator is close to the air volume set by a user and tends to be constant, and a lampblack discharging effect is improved while sufficient exhaust air rate is guaranteed.

An improved cardiopulmonary resuscitation device for resuscitating human infants is provided. The device includes a manually compressible and resiliently expandable bag constructed of an elastomer shell that encloses a breathable gas chamber having a volume capacity sufficient to inflate the lungs of a human patient when the bag is fully compressed. The shell includes at least one compressible region constructed of a wall having less resilience than the shell's average resilience. The less resilient region helps prevent over inflation of the patient's lungs. The device further includes a patient interface assembly that is communicable with a breathable gas outlet of the bag breathable gas chamber, and a breathable gas source communicable with an inlet of the bag breathable gas chamber. The device can optionally include a breathable gas manometer to monitor backpressure from the patient's lungs to further insure against over inflating the patient's lungs.

The invention provides a wind guiding device, a wind guiding control method and an air conditioner. The wind guiding device comprises a wind channel component and a wind door component, wherein the wind channel component is arranged inside a housing; the wind door component is mounted on the housing and comprises at least one wind-feeling-free wind discharging plate and at least one cylindrical rotating door which cover two middle wind outlets and two side wind outlets; a plurality of through holes are formed in the at least one wind-feeling-free wind discharging plate; a ventilation channel is formed in the at least one cylindrical rotating door. According to the wind guiding device, the wind generated by operation of wind wheels is blown to the user through the through holes of the wind-feeling-free wind discharging plate, so that the discharged wind is gentle; the wind-feeling-free wind discharging plates and the cylindrical rotating doors can open both middle wind outlets and / or both side wind outlet to be matched with each other; the wind-feeling-free wind discharging and the conventional wind discharging can be carried out at the same time, so that rapid cooling or heating can be achieved; the usage comfort level of the user can be ensured; meanwhile, the ventilation channel communicates with the inside and the outside of the housing through different positions so as to change the wind discharging directions of the wind outlets; the usage experience of the user can be improved.

The invention relates to a laser cutting system for soft material cutting, and a cutting method of the laser cutting system. The laser cutting system adopts the technical scheme that a lens (3) and a reflecting mirror (1) are mounted right above a workbench (5) in sequence; a laser resonator (19) is mounted on one side of a mirror surface of the reflecting mirror (1); a laser power supply (17), the laser resonator (19), a cooling water device (18) and a numerical control device (15) are connected with corresponding interfaces of a master control computer (16); an auxiliary gas nozzle (4) fixed under the lens (3) is over against the workbench (5); a pattern groove (6) is formed in an upper plane of the workbench (5); a transverse sliding block and a longitudinal sliding block that are fixed on a lower plane of the workbench (5) are mounted in a longitudinal sliding groove and a transverse sliding groove correspondingly and respectively; the longitudinal sliding groove and the transverse sliding groove are fixed in a workbench base (7); and a transverse servo motor (14) and a longitudinal servo motor (9) drive the transverse sliding block and the longitudinal sliding block by a transverse lead screw (13) and a longitudinal lead screw correspondingly and respectively. The laser cutting system and the cutting method have the characteristics that the laser cutting system and the cutting method are environmental-friendly and can improve the cutting efficiency and the cutting accuracy.

The invention provides an active respirator for children which comprises a respirator main body, wherein the respirator main body is a housing respirator main body; the outer side of the housing respirator main body is convex; a concave cavity is formed on the inner side of the housing respirator main body; the housing respirator main body comprises a front cover, a middle cover, a rear cover and a sealing ring, which are connected in sequence through snap fasteners; the sealing ring is contacted with a face; air inlet holes are formed at the joint of the front cover and the middle cover; air outlet holes are formed in the upper part of the middle cover; a filter unit is arranged on the middle cover and corresponds to the front cover; a cavity structure is arranged between the middle cover and the rear cover; a fan is arranged on the rear cover and corresponds to the filter unit of the middle cover; and an air outlet non-return valve, a battery connected with the fan, a control circuit board and a starting switch are arranged at the upper part of the rear cover. The active respirator is used for protecting children, is suitable for children to use in a hazy environment or other polluted environments, has a good protection effect and strong active air-suction power, is simpler and more convenient to manufacture, disassemble, assemble and clean, ensures a short and smooth air inlet passage, and meanwhile can avoid stimulation to lungs caused by the reason that air enters the lungs in case of high wind pressure.

The invention provides a combine harvester. A feeding port is formed in the middle of a frame, so that a connecting port between a crop conveying structure communicated with the feeding port and a header is located at the position, close to the middle, of the header, and crops are fed into the connecting port from the two sides of the header more evenly; and meanwhile, a scattering structure is arranged close to a grain storage assembly, the crops enter from the middle of the front end of the harvester and are partially scattered out from the middle of the tail end of the harvester through the n-shaped threshing direction of a double-helix threshing conveying system, and the stability of the gravity center of the combine harvester is guaranteed. A cleaning transmission system is arranged at the outer side of a threshing system, centralized transmission is achieved, and installation and debug are convenient. The whole harvester is compact in structure, small in occupied space, high in maneuverability and remarkable in operation efficiency, and the gravity center is always kept stable in the empty operation and harvesting operation process.

The invention relates to a low-noise modular air purification system. The low-noise modular air purification system comprises a medical exhaust air and fresh air integrated cabinet, a return air processing and air supply ceiling and return air ports, wherein the medical exhaust air and fresh air integrated cabinet is used for feeding fresh air and to-be-exhausted air and exhausting the fresh air and the to-be-exhausted air after processing; the return air processing and air supply ceiling is used for evenly mixing, purifying and filtering the introduced fresh air and return air and exhausting the mixed air in a light turbulence mode; and a medical room and a return air channel communicate through the air return ports so that the return air can be introduced into the return air processing and air supply ceiling. The low-noise modular air purification system can remarkably decrease the rate of postoperative infection and greatly reduce energy consumption; meanwhile, through highly integrated equipment and the modular installation mode, the construction cost and complexity are remarkably reduced, so that the construction cost of operating rooms is remarkably reduced, and the construction period of operating rooms is remarkably shortened; due to the facts that no special machine room or return air pipeline is required and the number of valves is small, the space requirements are reduced remarkably; and besides, noise can be remarkably lowered on the premise that sufficient air volume is ensured.

The invention discloses a generator set driven by an engine. The generator set comprises a sound proof box, an engine, a generator and an exhaust muffler, wherein the sound proof box is composed of an upper cover, side walls and a chassis; the engine is arranged on the chassis, and an engine cooling fan is arranged at the side inlet of the engine and guides cooling air into the engine; a cooling fan is arranged at the connection part of the generator and the engine to guide the cooling air into the generator; the exhaust muffler is arranged at the rear side of the generator and parallel to the axis of the generator; one end of the exhaust muffler is connected with the engine through an exhaust pipe; a hot air exhaust chamber is further arranged in the sound proof box, is composed of a side panel, a cover plate and an engine speed regulation base, and encircles an engine cylinder end, a cylinder body and one part of the exhaust pipe; an opening is formed in the rear side of the hot air exhaust chamber and is connected with a first ventilation hole at the side wall of the sound proof box. According to the generator set, the problems of noise and heat balance can be effectively solved, and the oil temperature of the engine can be obviously reduced beyond 30 degrees centigrade, thereby ensuring that reliable lubrication of the engine and the power level of the complete generator bring into correspondence with open-shelf products.

The invention discloses an axial flow type fan comprising a fan wheel, a fan frame, a permanent magnet and a stator. The fan wheel comprises a hub and a plurality of blades. The hub is provided with a first end part and a second end part. Each of the blades is provided with a first circumferential edge and a second circumferential edge, the first circumferential edge of each blade is connected tothe outer circumferential wall of the hub, and each blade is respectively provided with a first air driving surface and a second air driving surface. The first air driving surface forms at least one first concave part, and the second air driving surface forms at least one second concave part. The fan frame is a hollow frame in which the fan wheel can be arranged. The permanent magnet is connectedto the inner side of the hub of the fan wheel. The stator is connected to the inner side of the fan frame. Therefore, the fan wheel can produce sufficient air quantity no matter the fan wheel rotatesclockwise or anticlockwise, so that the fan wheel can be used in work places requiring double-direction air driving.

The invention provides a wind guide device, a wind guide control method and an air conditioner. The wind guide device comprises a wind duct assembly and a wind door assembly, wherein the wind duct assembly is arranged in a shell, two wind wheels are mounted in the wind duct assembly, and the wind door assembly is mounted on the shell and comprises at least one sense-of-windless wind outlet plate for covering a wind outlet in the middle and at least one sliding door located at wind outlets in two sides, and at least one sense-of-windless wind outlet plate is provided with multiple through holes. According to the wind guide device, wind generated when the wind wheels operate is blown to users through the through holes in the sense-of-windless wind outlet plates, so that the output wind is gentle; it is avoided that the wind is directly blown to the users through the wind outlets and consequently the users feel uncomfortable, the use comfort of the users is improved, meanwhile the sense-of-windless wind outlet plates and the sliding doors are in cooperation and slide to different positions to open or close the wind outlet in the middle and / or the wind outlets in all the side faces, quick cooling or heating is achieved and the use comfort of the users is guaranteed while sense-of-windless wind output and conventional wind output can be achieved, and the use experience of the users is improved.

A blower fan according to a preferred embodiment of the present invention is a centrifugal fan including a stationary portion, a bearing mechanism, and a rotating portion. The stationary portion includes a lower plate portion and a stator. The stator includes a plurality of teeth each of which has a radially inner end including an upward projecting portion arranged to extend axially upward.

The invention discloses a heat pump suitable for high altitude. The heat pump comprises two air heat exchangers arranged indoors and outdoors separately, and draught fans for providing airflow for thetwo air heat exchangers, wherein the two air heat exchangers are connected through a closed refrigerant pipeline; a compressor is further arranged on the refrigerant pipeline; the heat pump further comprises an indoor unit controller and an outdoor unit controller having mutual communication; the indoor unit controller is electrically connected with the indoor draught fan; the outdoor unit controller is electrically connected with the outdoor draught fan; the heat pump further comprises an outdoor barometric pressure sensor; and the barometric pressure sensor communicates with the outdoor unit controller; and the barometric pressure sensor is utilized to detect the outdoor barometric pressure, so that the rotating speed of the draught fan is correspondingly adjusted, the air volume generated by the draught fan can meet the demand of the air heat exchangers under the barometric pressure environment, and sufficient air volume and the heating effect can be ensured especially in the highaltitude areas with thin air. The invention is used in the field of heat pumps.

The invention belongs to the technical field of tea processing machinery and provides an oil-fired tea dryer. The oil-fired tea dryer comprises a dryer box body, a hot air generating system, a tea feeding system and a tea discharging system, wherein the hot air generating system is arranged above the dryer box body and is communicated with the dryer box body, the tea feeding system is arranged on one side of the dryer box body, and the tea discharging system is arranged at the bottom of the dryer box body. A tea conveying system is arranged in the dryer box body. The tea conveying system comprises at least two conveying layers. The feeding end of the tea conveying system is matched with the tea feeding system. The discharging end of the tea conveying system is matched with the tea discharging system. The hot air generating system, the tea feeding system, the tea discharging system and the tea conveying system are controlled by a control system which is arranged on the dryer box body. According to the oil-fired tea dryer, the structure of the dryer box body is optimized, the path through which hot air enters the dryer box body is shortened, the inner ventilation of the box body is improved, convective heat transfer coefficient is increased through layered conveyance and air intake, and energy loss is reduced.

The invention discloses a temperature and humidity regulating device for an escape capsule. The temperature and humidity regulating device comprises an absorber, an evaporator arranged in an equipment compartment, and an air supply and return system arranged in the escape capsule, wherein a plurality of upper and lower coaxial through holes are formed on the upper top plate and the lower bottom plate of the absorber; a cooling pipe is arranged in the corresponding upper and lower through holes vertically; a closed chamber is formed between the cooling pipe and the shell of the absorber; a surface cooler is arranged on the wall of the evaporator; the inlet end and the outlet end of the surface cooler pass through the side wall of the equipment compartment, respectively; the inlet end is communicated with an air return inlet in the escape capsule, and the outlet end is communicated with an air supply pipe which is equipped with an air pump and an air supply outlet in sequence and is disposed in the escape capsule; a water condensing pipe is arranged at the outlet end of the surface cooler; a hole, which is communicated with one end of a steam pipeline, is formed on the upper top plate of the absorber corresponding to the chamber; the other end of the steam pipeline, on which a stop valve is arranged, is communicated with the top end of the evaporator. The temperature and humidity regulating device disclosed by the invention is free from repeated filling of cool storage materials, free of energy consumption, small in volume, simple in structure and convenient in operation.

The invention provides a wind guide device, a wind guide control method and an air conditioner. The wind guide device comprises a wind channel assembly and a wind door assembly. The wind channel assembly is connected with a wind wheel assembly and arranged in a shell at two wind outlet areas. The wind door assembly is mounted on the shell and comprises multiple wind doors used for opening or closing a middle wind outlet or two side wind outlets. The multiple wind doors comprise at least one folding door and at least one cylindrical rotating door. By means of the wind guide device, wind generated by working of the wind wheel assembly is blown out to the outer environment by different parts of the middle wind outlet or the side wind outlets opened through expansion or contraction of the folding door to different positions, and the middle wind outlet or the side wind outlets can blow out wind in different directions in the wind outlet state; the cylindrical rotating doors rotate so that ventilation channels can be located at different positions to communicate the inner portion of the shell with the outer portion of the shell to open the middle wind outlet or the side wind outlets; the wind outlet direction can be changed; the wind outlet range can be widened; and the use experience of a user can be improved.

The invention discloses an air conditioner indoor wall-mounted machine which comprises a machine shell, an air guide plate, a partition plate and a baffle. A first cavity, a second cavity located in the front side of the first cavity and an air outlet air channel located in the lower sides of the first cavity and the second cavity are limited in the machine shell. The air guide plate is configured to be rotationally arranged at the lower portion of the machine shell so that an air outlet located in the tail end of the air outlet air channel can be opened or closed. The partition plate is arranged between the first cavity and the second cavity and is configured to rise in a controlled manner to communicate with the first cavity and the second cavity. The baffle is arranged between the second cavity and the air outlet air channel and is configured to stretch in a controlled manner to cut off the second cavity and the air outlet air channel. The bottom end of the first cavity communicates with the air outlet air channel, multiple ventilation holes are formed in the front surface of the second cavity so that surrounding air can be allowed to enter the second cavity through the multiple ventilation holes and enter the first cavity from the second cavity, and then the air flows into the air outlet air channel and flows out through the air outlet.

The invention discloses a supercritical carbon dioxide coal-fired boiler system and a smoke-air coupling three-dimensional circulation process thereof. The coal-fired boiler system comprises a hearth,a flue, a secondary fan and a recirculation flue, wherein combined air nozzles are arranged on the peripheral wall surface of the hearth; one end of the flue communicates with the upper end of the hearth; an air outlet of the secondary fan communicates with the combined air nozzles through an air volume control valve; the air inlet end of the recirculation flue communicates with the flue; the airoutlet end of the recirculation flue communicates with the combined air nozzles through a smoke volume control valve; and a recirculation fan is arranged on the recirculation flue and is used for extracting smoke from the flue. The supercritical carbon dioxide coal-fired boiler system can guarantee the combustion efficiency of a coal-fired boiler and effectively relieves high-temperature corrosion and coking and slagging of the wall surface of the coal-fired boiler.

The invention discloses a natural wind / warm wind dual-purpose electric circulation fan. The fan includes a fan body shell (10), a pedestal assembly (70) for bearing the fan body shell, and a grillingor mesh front cover (60). The inside of the fan body shell successively includes a motor (20), a wind-guiding ring (30), a heat-generating body assembly (40) and a fan blade (50) from back to front ina coaxial line manner; the front part of the fan body shell is a wind channel (11), and the rear part, the bottom surface and the surface of the normal periphery of the central axis of the fan body shell are grilling or mesh wind intake structures; when the fan runs, the rear part of the wind blade can let wind in from the grilling or mesh fan body shell in radial and axial directions no matter the fan is used as the natural wind electric circulation fan or used as the warm wind electric circulation fan, so that enough wind amount can be guaranteed; and as the restriction effect of the wind channel, longer wind supply distance can be realized. The fan can choose the natural wind or the warm wind for use; and both working conditions can achieve the wind output and wind supply distance of natural wind electric circulation fans in the prior art, so that equipment use efficiency can be greatly enhanced, and large occupying space can be prevented from purchasing two pieces of equipment.

The present invention provides a refrigeration device body (31) at a trailer (20). A refrigerant circuit (40), an engine (50), and a generator (51) are received in the refrigeration device body (31). Further, a condensation side path (70) is formed in a portion from the front face to the upper face of the refrigeration device body (31). A condenser (42), an electrical equipment box, condenser fans (44), and a radiator (55) are sequentially and searially arranged in the condensation side path (70) from the upstream side to the downstream side. Also, an evaporation side path is formed in the refrigeration device body (31). The condenser fans (44) located in the condensation side path (70) and evaporator fans located in the evaporation side path are alternately arranged in the lateral direction of the refrigeration device body (31).

The invention discloses a seal valve material returning system for a chemical loop combustion system. The middle lower part of the inner surface of the rear wall, which is opposite to a partition plate, of a moving bed is inclined towards the partition plate at an inclination angle of 30-60 degrees; a plurality of air outlet holes are formed in an air distribution plate of a fluidized bed on the left side of the partition plate; umbrella-shaped air caps are mounted on the air outlet holes; a moving bed on the right side of the partition plate is provided with an inclined air distribution plate; an adjustment air pipe is arranged at a position, which is close to an inclined plate, on the rear wall, which is opposite to the partition plate, of the moving plate and can supply intermittent swinging type lateral blowing air; the effective area of the moving bed of the whole device is smaller than that of the fluidized bed. The material returning device can avoid the phenomenon that material running is stopped, thereby avoiding the condition that gas in an air reactor backwards enters a fuel reactor; the controllability of the material throughput is improved, and the stability and reliability of running are improved; furthermore, the seal valve material returning system is simple in structure and convenient to manufacture. The seal valve material returning system is suitable for a loopseal system in the conventional chemical loop combustion reaction device, and lays a foundation for the research on a chemical loop combustion technology.

A hair dryer (8) includes: a heater (16); a fan (22); a motor (18) for driving the fan (22); a body case (12) that accommodates the heater (16), the fan (22), and the motor (18); and a thermal barrier tube 14 disposed between the body case (12) and the heater (16). The diameter of the fan (22) is allowed to be 90 mm or more, and an air quantity formed by the fan (22) is allowed to be 1.0 m 3 to 1.4 m 3 / min, thereby enabling reduction of noise while resulting in the sufficient air quantity.

The invention relates to a moxibustion instrument, in particular to an open fire smoke cleaning moxibustion instrument, which comprises a combustion part, a driving part and an air outlet part, wherein the combustion part, the driving part and the air outlet part are sequentially communicated. The combustion part comprises a combustion chamber body, a heat insulation ventilation layer and a shellbody, wherein the combustion chamber body is arranged in the middle of the combustion part, the heat insulation ventilation layer is arranged surrounding a periphery of the combustion chamber body, aside wall of the combustion chamber body is provided with a hole; the shell body comprises a combustion chamber inner wall and a combustion chamber outer wall, an outer layer of the heat insulation ventilation layer is fixedly attached to the combustion chamber inner wall, and the combustion chamber outer wall is arranged at an outer side of the combustion chamber inner wall. By the adoption of the open fire smoke cleaning moxibustion instrument, substances generated after burning of wormwood are subjected to graded filtration through a precipitation suction chamber, so that wormwood oil is adsorbed on an absorption medium on a filter element, a separation process of smoke and gas is realized, and the open fire smokeless effect is achieved.

The invention discloses biomass particle combustion drying equipment. The biomass particle combustion drying equipment comprises a feeding system and a combustion system. The feeding system comprises a feeding pipe. The combustion system comprises a flame outlet pipe, a flame outlet guiding pipe and a bellows. The flame outlet pipe penetrates through the bellows to be communicated with the feeding pipe. Air holes are formed in the portion, located in the bellows, of the flame outlet pipe. The flame outlet pipe is sleeved with the flame outlet guiding pipe. A gap is reserved between the flame outlet guiding pipe and the flame outlet pipe. The gap is communicated with the bellows. The biomass particle combustion drying equipment is simple in structure, low in manufacturing cost, capable of saving energy, efficient, environmentally friendly and suitable for industrial drying.

The invention provides an air guide device, an air guide control method and an air conditioner. The air guide device comprises an air duct assembly arranged in a shell and an air door assembly arranged on the shell, wherein the air door assembly comprises two windless air outlet plates covering two side air outlets and a cylindrical rotating door located in a middle air outlet; each windless air outlet plate is provided with a plurality of through holes; and a ventilating channel is arranged in the cylindrical rotating door. According to the air guide device provided by the invention, air generated by a wind wheel during working blows to a user via through holes of the windless air outlet plates covering two side air outlets, so that the outlet air is gentle and the windless air outlet range is expanded; the windless air outlet plates are matched with the open middle air outlet in the cylindrical rotating door, so that simultaneous windless air outlet and conventional air outlet can be achieved to achieve fast cooling or heating, and the use comfort of a user is ensured; meanwhile, the ventilating channel is communicated with the inside and the outside of the shell at different positions, so that the air outlet direction of the middle air outlet can be changed and the usage experience of the user is improved.

The invention discloses a modified polystyrene resin foam plastic which comprises the following components in parts by weight: 30-40 parts of polystyrene resin, 20-30 parts of modified bismaleimide, 10-15 parts of kaolin, 3-6 parts of polyacrylonitrile-based carbon fibers, 1-3 parts of glass fibers, 25-32 parts of mullite, 10-20 parts of diisononyl phthalate, 1-2 parts of phosphate, 0.5-1.3 parts of a silane coupling agent, 0.5-1 part of microcrystalline wax, 0.5-1 part of a polyphenolic antioxidant 1010, 0.05-0.1 parts of a polyethylene glycol-methylacrylic acid copolymer and 1-5 parts of a foamer. The modified polystyrene resin foam plastic disclosed by the invention is good in toughness and excellent in heat resistance.