83results about How to "Large exhaust air volume" patented technology

The patent refers to the field of 'drying solid materials or objects by removing liquid therefrom'. The invention relates to a drying device, particularly relating to an energy-conserving device, and providing a high-air-volume multistage circular energy-conserving drying device utilizing wastes to heat fresh air. A drying room is composed of multi-section drying ovens; each drying oven is provided with a diaphragm; an enclosed air room with multiple air flue slits is arranged on the diaphragm, and is communicated with a heat exchanger through an air inlet main pipe, an air inlet branch pipe, an air outlet main pipe and an air outlet branch pipe; a fresh-air taking opening is connected with the heat exchanger and a heat exchanging draught fan in sequence; the outlet of the heat exchanger, the air inlet main pipe and the air inlet branch pipe are connected with each air room; the air exhaust branch pipe of the previous two-section drying oven air room with high waste gas concentration is discharged through a primary heat exchanger; other air exhaust branch pipes are connected on the air outlet branch pipe, and are connected with a secondary heat exchanger and the front end part of the heat exchanging draught fan to form circulation; the inner air volume is increased; the hot air circulates in the drying oven; the waste gas temperature is utilized to save energy source; the drying oven temperature is flexibly set, and small circulation is flexibly regulated in the drying oven; and the temperature control is uniform.

The process of comprehensively utilizing plant fibrous waste includes the following steps: depurating plant fibrous waste as material, cutting, drying, burning in a charring furnace at 200-400 deg.c, recovering the plant vinegar liquid with one recovering device connected to the charring furnace, recovering tar, discharging charred plant waste, cooling and recovering and treating the plant char. The present invention has reduced air pollution, high plant vinegar liquid recovering rate, and high plant char yield. The plant char may be used as soil improving agent and fertilizer and pesticide applying assistant.

The invention discloses a combined automatic stair-climbing fire-extinguishing smoke-discharging robot, which comprises a crawler-type automatic traveling chassis, a combined fire-extinguishing smoke-discharging device, an emergency injection self-protection device, and a control and image transmission system, wherein the crawler-type automatic traveling chassis is used as a carrier, the combined fire-extinguishing smoke-discharging device, the emergency injection self-protection device and the control and image transmission system are installed on the crawler-type automatic traveling chassis; the crawler-type automatic traveling chassis comprises a storage battery, a support chassis, a crawler drive system and a stable and dumping-proof mechanism, the storage battery for supplying the power to the combined fire-extinguishing smoke-discharging device, the emergency injection self-protection device and the control and image transmission system is installed on the support chassis. The combined automatic stair-climbing fire-extinguishing smoke-discharging robot has large air output, is capable of climbing the stairs, has the functions of self-protection, decontamination and neutralizing the toxic gas, and can meet the requirement for the blast air in different environments of fire extinguishing and emergency rescue.

The invention discloses a coal gangue activation process adopting synergism of a pre-decomposition kiln. The coal gangue activation process is performed by use of a crushing system, a raw material grinder, a cyclone separator, a conveying device, a lifter, a black coal gangue powder storehouse, a rotary kiln, an activating furnace, a material cooling and air preheating system, a high-efficiency separator, a preheater, an afterheat boiler, a dust collection system, a pneumatic transmission pump and a finished product storehouse. The performances of the coal gangue are activated by utilizing the synergism of a large Portland cement clinker production line in China at present; by optimizing and controlling various technological parameters in the activation, the activity of the black coal gangue is farthest improved; therefore a high-quality mixed material is provided for production of cement and concrete, and the combustion heat of the black coal gangue is also fully utilized to increase the electric energy production of the clinkers, thereby really making the best use of everything.

The invention discloses a window type air-conditioner, comprising a housing; a middle partition plate for dividing the inside of the shell into a first space area and a second space area is arranged in the housing; first axial air-out type fan blades and an indoor-side heat exchanger partially enclosing the first axial air-out type fan blades are arranged in the first space area; an indoor air outlet is formed on the position of an indoor panel corresponding to the first axial air-out type fan blades; an indoor air-inlet grilles are arranged at the position of a housing cover corresponding to the indoor-side heat exchanger; and a motor component for driving the first axial air-out type fan blades is arranged in the housing. According to the window type air-conditioner, the first axial air-out type fan blades at the indoor side is used for exhausting air and has the advantages of being higher in exhaust air volume, reduced in rotating speed and reduced in noises; with adoption of the air intake at the indoor side from the lateral side of the housing, the design of the air intake grilles on the indoor panel is omitted; only an indoor air outlet is arranged, so that the structure of the indoor panel is simplified greatly; the design of the indoor panel is simpler and the appearance is neat and attractive.

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

The haze-dust air is mainly formed by the uniform floatation of a great amount of microscopic dust particles, smoke particles and salt particles in the air and can severely influence the health of the human body. Wind and rain are the bane of the dust-haze. The invention provides a spray-type haze-dust air purifier, and a working principle of the spray-type haze-dust air purifier is as follows: the haze-dust air passes through a draught pipe at a high speed and is rubbed with chemical fiber cloth strips inside the draught pipe to generate static electricity, then the haze-dust air is sprayed by spray water in a box body, after being washed by the spray water, harmful foreign matters of the haze-dust air with the static electricity are absorbed by the water, finally the air passes through a sieve tray, so that the clean air is separated from the sewage to be discharged from an exhaust port, and clean and fresh air can be provided for people nearby the exhaust port. The spray-type haze-dust air purifier can purify the haze-dust air containing 2.5 particulate matters (2.5PM) and subtle dust particles, smoke particles, salt particles and soluble harmful gases.

The invention discloses an efficient high blast pressure range hood. The efficient high blast pressure range hood is characterized in that: a draught fan is arranged in a range hood outer shell; the outer shell of the draught fan is connected and sealed with the range hood outer shell; a lead air channel and a mold cavity are connected and assembled to form the outer shell of the draught fan; an air inlet and an air outlet of the draught fan are on the same axis; a motor of the draught fan is fixed in the outer shell of the draught fan; the motor drives a wind wheel connected with a motor shaft to rotate in the mold cavity of the draught fan; a large-sized LED lamp panel is arranged at the lower part inside the range hood outer shell; the interval between the large-sized LED lamp panel and the range hood outer shell forms an air inlet of the range hood; the distance zone between the large-sized LED lamp panel and the range hood outer shell end face forms an air inlet guide zone of the range hood; a guide air channel is arranged in front of an air inlet end of the wind wheel of the draught fan; a plurality of guide plates are arranged at the back of an air outlet end of the wind wheel; the sectional area of an air inlet of the wind wheel is smaller than the sectional area of an air outlet of the wind wheel; the radial section of each blade of the wind wheel is convex, and the convex direction is the rotating direction of the wind wheel.

A residence flatlet fresh air changing system provided with a double air duct pressurizing exhausting device comprises a main exhaust fan (1) and an air absorbing pipeline (2) which is communicated with all the rooms, wherein, an air outlet end of the air absorbing pipeline (2) is connected with an air inlet end of the main exhaust fan (1), and the air absorbing pipeline (2) is provided with a plurality of air absorbing holes (3) communicated with the rooms needing to change air. The fresh air changing system is characterized in that the air absorbing pipeline (2) is provided with at least one multi- air-duct pressure device (4) which is provided with two air ducts, the two ends of which are communicated with the ends corresponding to the air absorbing pipeline (2), and one of the air ducts is equipped with a blower fan (5). The invention solves the problem of installing forced fans on the air absorbing pipeline, can ensure the work of all the forced fans not to affect the air change of other rooms, and selectively pressurizes the rooms needing pressure boost according to the needs, thus ensuring the effect of air change.

The invention provides a solar technology air purifier. The solar technology air purifier comprises a purifier, a composite filter screen, a solar photovoltaic panel and a solar adjusting device; the composite filter screen is mounted on the purifier in an embedding manner; an intake port of the purifier is horizontally mounted; an exhaust port is vertically mounted; the solar adjusting device includes a LCD controller, an accumulator and an inverter; the LCD controller is respectively connected with the photovoltaic panel and the accumulator; and the accumulator is connected with the inverter. The air purifier uses solar power generation and family power generation, has double fans and double power, can provide higher exhaust quantity, can quickly realizes air filtration, and saves the family power consumption; and a WiFi device is positioned in the solar technology air purifier, so that customers can realize remote control.

The invention discloses a fresh air and returned air proportional control haze removal system. The fresh air and returned air proportional control haze removal system comprises an indoor unit and an outdoor unit; the indoor unit comprises a control device and function modules, the function modules are connected to form an air flue loop, the air flue loop comprises an air returning pipeline, a fresh air pipeline, an air feeding pipeline and an exhaust pipeline, an inlet of the fresh air pipeline is in series connection with a fresh air vale, an inlet of the air returning pipeline is in seriesconnection with an air returning valve, a control device controls the opening degrees of the fresh air valve and the oil returning valve so as to control the fresh air amount and the air returning amount, and controls heat exchange amounts of fresh air and returned air on a full heat exchanger. A control method of the haze removal system is further provided. Through a sensor, the fresh air valve and the air returning valve are controlled so as to control the opening degrees of the fresh air valve and the oil returning valve, the proportion of the fresh air amount and the indoor air returning amount can be accurately controlled, energy brought by the fresh air and energy losses for air purifying are reduced to the minimum, the indoor air purifying efficiency is improved, and comprehensive effective energy-saving treatment of indoor air can be improved.

The invention provides a microwave drying method of wood veneers. The method comprises the stage of preprocessing, wherein the wood veneers to be measured are taken and cut to be of the preset size, the oven dry weight and the wet weight are detected, microwave drying is performed on the preset ventilation condition till the veneers reach the target weight, and the electric energy consumption value of the process is recorded to obtain the water extraction rate of the wood veneers; and the stage of production, wherein the electric quantity needed by microwave drying of the wood is obtained according to the water extraction rate and the wet weight of the wood obtained in the stage of preprocessing, the best drying time is determined according to the operation power of the microwave drying equipment and the electric quantity needed by microwave drying of the wood, and the raw wood materials of the batch are processed by adopting the best drying time. Under the certain ventilation condition, the linear relation between the wood water extraction rate and the microwave electric energy consumption value is built; and the microwave wood drying technology time quantified control is achieved, the microwave drying efficiency is greatly improved, and the drying quality and economic benefits are ensured.

The invention discloses a fume hood with automatically variable air quantity. The fume hood with automatically variable air quantity comprises a body, a ventilating device, an alarm and a control unit, wherein the body is provided with an infrared sensor which is used for detecting whether experiment operators stay in a working region or not; a temperature sensor for detecting the temperature in the body is arranged on the inner side of the body; the ventilating device comprises three ventilating plants including a first ventilating plant, a second ventilating plant and a third ventilating plant; a first solenoid valve, a second solenoid valve and a third solenoid valve are respectively arranged on the first ventilating plant, the second ventilating plant and the third ventilating plant; the control unit is in communication connection with the infrared sensor, the temperature sensor and the alarm; after acquiring detecting signals through the infrared sensor and the temperature sensor, the control unit controls the first solenoid valve, the second solenoid valve, the third solenoid valve and the alarm to act by commands, and the ventilation quantity and the ventilation intensity in the fume hood are classified according to the temperature in the body so as to accurately control the temperature in the body.

The invention discloses an impeller device comprising a front disc and a rear disc, wherein the rear disc is fixedly connected with a wheel hub through a connecting piece, the wheel hub is located in the center of the rear disc, and the rear disc is fixedly provided with blades by taking the central axis of the rear disc as a reference axis; the blades are shaped like straight plates, the outer side edges of the blades form a round, the blades are provided with intersection points on the round, and the extension lines of the blades and the tangent lines at the intersection points of the round form an included angle of 59-61 DEG; and an air outlet is formed in the middle of the front disc, the periphery of the front disc is fixedly connected with the blades to form a closed structure, the periphery of the front disc is shaped like a circular arc, and the circle center of the circular arc is located at the side far away from the blades. The impeller device has the beneficial effects that the blades arranged at the included angle ensure that air flow more smoothly enter the blades, air resistance is reduced, and the noise is effectively reduced. The blades are simple in structure, easy to machine and beneficial to large-scale production, so that the production cost can be effectively reduced. The impeller device is of the closed structure and capable of effectively avoiding air flow loss so as to be relatively high in air outlet volume and higher in working efficiency.

The invention discloses a novel multifunctional power cabinet device, Including shock absorbers, the upper surface of the shock absorber is fixedly connected with a lifter, The upper end of the lifteris fixedly connected with a cabinet box, a ventilation net is arranged on one side surface of the cabinet box, a servo motor is embedded and installed on the upper surface of the cabinet box, a support is arranged on the lower surface of the lifter, a lifting cylinder is arranged on the upper surface of the support, and a handle is embedded and installed on one side surface of the lifting cylinder. The new multifunctional power cabinet equipment, by providing the first bevel gear and the second bevel gear, the rotation of the first screw may be controlled by rotating the handle, so that the first nut moves up and down on the first screw rod to adjust the height of the cabinet. The servo motor and the second screw rod are arranged so that the motor can move up and down on the second screwrod. The second exhaust fan exhausts heat from each corner of the cabinet to prevent excessive heat from causing fire to the circuit in the cabinet.

The invention discloses an automatic temperature control ventilation cabinet. The automatic temperature control ventilation cabinet comprises a cabinet body, an exhaust device, a warning device and a control device; a gas concentration detector for detecting the concentration of poisonous and harmful gas and a temperature sensor for detecting the internal temperature of the cabinet body are arranged on the inner side of the cabinet body; the warning device works according to instructions of the control device; the exhaust device includes first exhaust equipment and second exhaust equipment; the first exhaust equipment is provided with an electromagnetic valve, and includes three exhaust modes; the electromagnetic valve is different in openness under different exhaust modes; the second exhaust equipment includes three exhaust grades, and is different in working power under different exhaust grades; the control device dynamically controls the first exhaust equipment to work in different exhaust modes according to different gas concentration values in the cabinet body; and the control device dynamically controls the second exhaust equipment to work in different exhaust grades according to the temperature in the cabinet body.

The invention relates to an exhaust fan mounted on a screen window, and belongs to the technical field of household appliance manufacturing. A stepped structure is arranged at the lower part of an outer frame of the exhaust fan, and is matched with a supporting strip, so that the exhaust fan can be mounted on screen windows of different sizes smoothly, an edge sealing cloth strip is arranged at the overhead part of the exhaust fan, a nylon fastener tape is arranged on the edge of the edge sealing cloth strip, the edge sealing cloth strip is used for stopping air backflow, and a power supply input socket and a power supply output socket are arranged in corresponding positions of the upper part and the lower part of the outer frame of the exhaust fan, so that power supplies of the exhaust fans mounted continuously are connected conveniently and reliably. After practical application, the exhaust fan can suck outdoor cold air at summer night in a room, can replace an air conditioner to a certain degree, and remarkably reduces the power consumption.

The invention discloses a fan volute intermediate plate guide vane air inlet structure of a smoke exhaust ventilator. The technical scheme is that the fan volute intermediate plate guide vane air inlet structure of the smoke exhaust ventilator comprises an annular intermediate plate which is connected with a front cover plate and a rear cover plate of a volute; the angle of a volute tongue at the front end of the annular intermediate plate is designed as an angle which prevents air flow from flowing into an outlet and enables the air flow to flow into the volute; an air inlet is formed in the rear end of the volute tongue; another air inlet is formed in the rear end of the volute tongue of the annular intermediate plate, and thus a fan blade of an impellor can guide-in the air flow from the air inlet through an air inlet flow guide plate, and the fan efficiency is improved; the air amount at an outlet is increased; certain distance is left between the front end of a flow guide plate and the rear end of the an air defector, and thus air is extremely easy to guide into the volute; and while the flowing air flow in the volute is shielded due to the length of the air inlet flow guide plate, under the directional rotation of the impellor, the air flow can not flow out of the air inlets, the air is guide-in from the air inlets to be directly transmitted to the air outlet of the volute through an outer angle of a impellor fan blade, the air flow friction loss of the impellor at a channel is reduced, and thus the air pressure and the air speed of the fan are improved.

The invention provides a fan blade capable of blowing air in a diffused mode and a fan blade support. The fan blade capable of blowing air in the diffused mode is provided with five blade bodies and is designed according to the data parameters such as the blade root curve, the blade tip curve, the front edge curve, the rear edge curve, a hub external diameter and the blade external diameters. According to the fan blade capable of blowing air in the diffused mode, the external diameter is small, the blast capacity is high, and noise generated by the fan blade is low; through the designed blade curved surface structure, air is blown by the fan blade in the diffused mode instead of the focused mode; in addition, due to the fact that blade bodies with even thicknesses are replaced by the blade bodies with gradually-changed thicknesses, deformation of the blade bodies when the blade bodies operate can be reduced; furthermore, turbulent air flow is generated on the tip of the blade when the fan blade rotates, noise generated by the fan blade can be lowered. By the adoption of the fan blade support which is used in cooperation with the fan blade capable of blowing air in the diffused mode, the blast capacity of the fan blade can be effectively improved, the air blown by the fan blade can be better diffused around, and electric elements which are arranged around the fan blade can be better cooled by the fan blade.

The invention relates to a heat pump heat recovery type fresh air machine adopting return air supercooling and mixed air condensing. The heat pump heat recovery type fresh air machine comprises a compressor, a four-way reversing valve, an air exhaust coil pipe, a supercooling coil pipe, a throttling device, an air supply coil pipe, an air supply fan, an air exhaust fan and a bypass air port. The compressor, the four-way reversing valve, a refrigerant channel of the air exhaust coil pipe, a refrigerant channel of the supercooling coil pipe, the throttling device and a refrigerant channel of theair supply coil pipe are connected through a refrigerant connecting pipeline, a closed-cycle refrigerant flow path is formed, the air supply fan is connected with an air channel of the air supply coil pipe through an air supply air way, an air supply flow path is formed, an air channel of the supercooling coil pipe, an air channel of the air exhaust coil pipe and the air exhaust fan are connectedthrough an air exhaust air way, an air exhaust flow path is formed, the bypass air port communicates with the air supply air way and the air exhaust air way, and the bypass air port is opened under arefrigeration working condition and closed under a heating working condition. Under the condition that the volumes in the coil pipes are kept unchanged, the refrigerating capacity of unit mass flow of a refrigerant can be increased, and the air supply temperature can be reduced.

The invention discloses a plant waste integrated utilization method. The method comprises 1, classifying plant wastes, removing impurities, and carrying out cutting until the plant waste length is less than the hearth diameter, 2, drying the plant wastes to control water content less than 25%, 3, burning the plant waste in a carbonization furnace, 4, through adjustment of an exhaust air rate, controlling a furnace inner temperature in a range of 200-400 DEG C, a carbonization furnace outlet smoke temperature in a range of 80-150 DEG C and a condenser outlet smoke temperature in a range of 15-30 DEG C, 5, cooling a temperature in a plant vinegar liquid recover to 15-30 DEG C by a condenser, wherein a carbonization furnace primary smoke vent is communicated with the plant vinegar liquid recover, 6, recovering and treating the plant vinegar liquid, 7, recovering tar, 8, discharging the completely carbonized plant wastes in the carbonization furnace and carrying out cooling, and 9, recovering and treating plant-charcoal.

The invention relates to a ventilation system and a control method thereof. The ventilation system comprises a ventilation pipeline, an air exhaust pipeline, a first pipeline and a second pipeline, wherein the ventilation pipeline is used for sending outdoor air into a room and internally provided with a ventilation fan and a first check valve; the air exhaust pipeline is used for exhausting indoor air to the outside, and an air exhaust fan is arranged in the air exhaust pipeline; one end of the first pipeline is connected to the air intake side of the exhaust fan; and one end of the second pipeline is connected with the other end of the first pipeline, the other end of the second pipeline is used for being connected into a room, and a fourth check valve is arranged in the second pipeline.When the indoor air meets any one of the following conditions, the first check valve and the ventilation fan are closed, and the exhaust fan is started: (1) the PM2.5 of the indoor air is greater than or equal to 300 [mu]g / m<3>; (2) the carbon dioxide mass change of the indoor air is greater than or equal to 1500ppm; (3) the temperature of indoor air is smaller than or equal to minus 10 DEG C andlarger than or equal to minus 40 DEG C; and (4) the humidity of the indoor air is greater than or equal to 65%. Through the design, pipeline condensation can be effectively avoided when fresh air isprovided.

The invention relates to the field of oil fume exhaust equipment, in particular to environment-friendly oil fume exhaust equipment for a large kitchen. The equipment comprises an air bellow, a motor is fixed in the air bellow, the end of an output shaft end of the motor is fixedly connected with an impeller, the two sides of the air bellow are symmetrically fixed and communicate with exhaust barrels, and the ends, away from the air bellow, of the two exhaust barrels communicate with an oil fume exhaust header pipe. Filter screens are fixed to the inner walls of the two exhaust barrels, and a brushing mechanism used for cleaning the filter screens is arranged between the two exhaust barrels. A cleaning mechanism used for flushing the filter screens is arranged between the two exhaust barrels, and the brushing mechanism is in transmission connection with the cleaning mechanism. According to the environment-friendly oil fume exhaust equipment for the large kitchen, the oil fume exhaust efficiency is improved, the risk of complete shutdown of the equipment is reduced, the filter screens are prevented from being blocked, and therefore the efficient passing ability of the filter screens is always kept, and then the oil fume filtering effect and efficiency are improved.

The invention discloses a smoke eliminator and a dual turbine fan thereof. The dual turbine fan comprises a volute and two centrifugal impellers driven by a motor to reversely rotate. The smoke eliminator comprises a smoke eliminator body, an exhaust pipe and a fixing seat, wherein the exhaust pipe and the fixing seat are used for fixing the smoke eliminator body. The smoke eliminator body comprises a shell and a fan arranged in the shell, and the fan is the dual turbine fan. The two centrifugal impellers in the dual turbine fan rotate synchronously and reversely, two air flues are used for air exhausting, and the air exhausting amount can be effectively increased.

The invention discloses a centrifugal fan. The centrifugal fan comprises a volute, an impeller assembly aranged in the volute and a first motor for driving the impeller assembly, wherein an air inletis formed in the volute, the main motor is provided with a first output shaft, and the centrifugal fan is characterized in that the impeller assembly comprises a first impeller and a second impeller arranged coaxially in a spacing mode, the first impeller is close to the air inlet, the second impeller is arranged on the side, away from the air inlet, of the first impeller, the centrifugal fan further comprises a second motor, the secondary motor comprises a stator and a rotor arranged on the periphery of the stator so as to form an outer rotor motor, the stator of the secondary motor is connected with the first output shaft of the main motor, and the stator and the rotor of the secondary motor are respectively connected with one of the first impeller and the second impeller so that the first impeller and the second impeller can be driven to rotate. The invention further discloses a range hood with the centrifugal fan and a control method of the range hood.

The invention provides an under-exhaust deodorization pipe device for a toilet. The pipe device mainly adopts and comprises a hard PVC drainage pipe that is commonly used in construction field, and the fittings such as a tee joint and an elbow, etc. that are matched with the drainage pipe; wherein, one end of an air intake of the pipe device is communicated with a squat ware, and one end of an air outtake is communicated with a ventilator. When people use the toilet, the ventilator is opened, negative pressure is formed in an air drainage pipe, and the bad smelly in the ware can be discharged outside the room via the air drainage pipe. The invention has the advantages of simple structure, convinient installation, low cost, beautiful appearance, and timely and complete deodorization, and is applicable for being popularized and used.

The invention provides a wood single-plate microwave drying device and drying method. The wood single-plate microwave drying device comprises a microwave heating device, a ventilation device controlling the ventilation quantity of the microwave heating device and a metering device metering the electricity consumption of the microwave heating device and is characterized in that the ventilation device is arranged on one side of the microwave heating device, and air in the microwave drying device enters the ventilation device through a ventilation opening in one side of the microwave heating device and is then discharged. In a work state, the metering device records the electricity consumption E of the microwave heating device when the wood water evaporation quantity is G so as to obtain a wood single-plate microwave drying water extracting rate eta. The numerical value of the wood single-plate microwave drying water extracting rate can be measured and calculated. Technical difficulties limiting the microwave wood drying technology for many years can be digitized, and a substantial breakthrough is made in the industrial application of the microwave wood drying technology.

The invention discloses a method and system for controlling a residence primary air system, and relates to the technical field of building energy saving. According to the method for controlling the residence primary air system, air in an exhaust pipeline communicating with an air conditioner room is heated through a solar PV / T heat collecting ring way, and cold air in a basement enters the room. The residence primary air system comprises the solar PV / T heat collecting ring way, the basement, the air conditioner room communicating with the basement and the exhaust pipeline communicating with the air conditioner room. The solar PV / T heat collecting ring way comprises an exhaust port coil pipe for heating the exhaust pipeline, and the air conditioner room communicates with the basement through an air inflow pipeline. The indoor primary air circulation capacity is improved, the equipment utilization rate is increased, the energy consumption of an air conditioner is reduced, and traditionalenergy is saved; and the utilization rate of a solar PV / T heat collector in non-heating seasons is increased, the solar photovoltaic photothermal conversion efficiency of the solar PV / T heat collector is guaranteed, and the service life of the solar PV / T heat collector is prolonged.

The invention discloses a large-screen television with the high brightness, consisting of a casing, a system circuit board, an optical projection system, a radiating structure and a display screen. The optical projection system comprises an optical engine and a reflecting mirror, wherein the optical engine is arranged on a lower hollow cavity of the casing, and provided with a light source, a filtering mirror, an optical system assembly and a protection lens; and the reflecting mirror is arranged on an upper hollow cavity, and a separator is arranged between the upper hollow cavity and the lower hollow cavity. The optical system assembly is sequentially provided with a first compound eye, an optical filter, a second compound eye, a polarizing sheet, a diachronic mirror, a prism and a micro-display chip according to the trend of optical paths; and the radiating structure consists of a radiating fan and an air flue, the air flue has two air inlet flues and four air outlets, and the four air outlets comprise a red-light air outlet, a blue-light air outlet, a green-light air outlet and a polarizing sheet air outlet. The brightness before the screen is well improved, and the uniformity problem of a picture can be solved with no obvious dark areas, and the whole machine power is low.

The invention discloses a digital photo frame with an air purifier flip cover plate. The digital photo frame comprises a digital photo frame body, wherein the front end of the digital photo frame body is provided with an electronic display screen; the back end of the digital photo frame body is provided with a flip cover support plate; an air purifier device is arranged inside the flip cover support plate; an air outlet is formed in the upper side of the back end plate surface of the flip cover support plate; the bottom end of the flip cover support plate is provided with a filtering screen plugging and filling hole; a purifier filtering screen is plugged from the filtering screen plugging and filling hole and is fixed at the front end of an air exhaust opening of the air purifier device; and a bottom sealing plug cover covers the filtering screen plugging and filling hole. By using the mode, the multifunctional performance of the digital photo frame can be enhanced in a way of installing the air purifier device at the back end of the digital photo frame; the digital photo frame can perform air purification treatment when being placed; the filtering screen replacing mode of the air purifier device is simple; the design of the air outlet is reasonable, so that the air exhaust quantity is great; and the air purification can be well performed in a sealed space.