3276results about "Ventilation systems" patented technology

The invention relates to the technical field of building energy saving, and discloses an energy room intelligent control method and system facing the sunlight condition, and the method comprises the steps: obtaining the total solar radiation intensity and scattered radiation intensity through a distributed sensor disposed in an energy room; calculating a sunlight illumination component proportion based on the total solar radiation intensity and the scattered radiation intensity, and determining a sunlight type according to the sunlight illumination component proportion; according to the sunshine type, the influence of sunshine change on the indoor thermal environment is evaluated by adopting a prediction algorithm branch, and the indoor temperature and humidity change trend and the thermal load demand in the future time period are predicted; based on the indoor temperature and humidity change trend and the heat load requirement in the future time period, combined with the heat mass energy storage level of the energy house building, a comprehensive regulation and control instruction matched with the sunlight type is generated; and according to the comprehensive regulation and control instruction, regulating and controlling the heat mass storage and release of the sunshade device, the ventilation system and the building, monitoring the regulation and control effect in real time, and optimizing the prediction algorithm according to the regulation and control effect. And regulation and control of the energy house under the sunlight condition are realized.

A lightweight thermal barrier panel and anchor assembly for installation on a new or existing building envelope is disclosed. The system includes a modular panel with an infill barrier and structural anchors. The anchors are attached to the new or existing building envelope on at least one side of the building envelope to receive the thermal barrier panel to create an air cavity between the panel and the building envelope. The thermal barrier panel framing includes openings within rigid framing members to promote ventilation of the air cavity to the at least one side of the thermal barrier panel.

The invention provides an intelligent control system and method for a natural cooling heat exchange ventilation unit, and relates to the technical field of energy-saving fans. The optimal operation mode and the natural cooling availability of a target ventilation unit are determined firstly; the expected heat exchange amount of the natural cold side is determined according to the current indoor heat load demand characteristics and the natural cold available capacity, and then a static adjusting instruction of a natural cold side actuator is determined according to the expected heat exchange amount; according to the heat load demand characteristics and the expected heat exchange amount, the mechanical refrigeration demand cold capacity is determined, and then a dynamic adjusting instruction of a mechanical refrigeration side actuator is determined according to the heat exchange efficiency and the mechanical refrigeration demand cold capacity of the mechanical refrigeration unit under the current working condition; and performing coordination control on the actuators on the natural cooling side and the mechanical refrigeration side based on the static adjustment instruction and the dynamic adjustment instruction. According to the scheme, dynamic cooperative control over natural cooling and mechanical cooling of the natural cooling heat exchange ventilation unit under the variable working conditions can be achieved, and therefore the energy efficiency is optimized on the premise that the requirement for indoor thermal comfort is met.

The invention relates to the technical field of ventilation and dust removal, in particular to an energy-saving control method and system of a ventilation and dust removal system and a terminal.The method comprises the steps that the current operation condition of the ventilation and dust removal system is recognized through operation state parameters of all dust production devices; on the basis of the current operation condition and the working rhythm of each dust production device, predicting a dust production load change trend in a future time period; generating a header pipe air pressure value of the ventilation and dust removal system according to the dust production load change trend; according to the main pipe air pressure value, the fan operation frequency of the ventilation and dust removal system is adjusted, and the start-stop period of the ventilation and dust removal system is set, so that the technical problems of control response lag and energy waste caused by the fact that the dust production load change trend cannot be predicted by an existing energy-saving control method of the ventilation and dust removal system are effectively solved.

A ventilation system including a ventilator; and an outdoor unit, wherein the ventilator includes a housing including a first intake, a second intake, a first outlet and a second outlet, a plurality of dampers to change flow paths of air flowing through the housing, first and second air blowers, a heat exchanger in the housing, and a processor to control the dampers and first and second air blowers to form a first flow path in which outside air flows through the heat exchanger, or form a second flow path in which room air flows through the heat exchanger, to thereby form a flow path in the ventilator, while air flows through the flow path, control the outdoor unit to form frost on the heat exchanger, and control the outdoor unit to stop operating based on a preset frosting termination condition so that the frost melts to clean the heat exchanger.

The present application relates to the technical field of air conditioners, and particularly relates to an air conditioner control method and device, a multi-connected air conditioner and a storage medium, the present application determines the target heat recovery mode of the multi-connected air conditioner by judging the water tank temperature of the hot water tank, the heating energy demand and the total energy demand of each air conditioner indoor unit obtained when the multi-connected air conditioner simultaneously exists refrigeration and heating water demand, and then adjusts the communication state of the reversing device and the throttling element according to the target heat recovery mode, so as to achieve the purpose of simultaneously operating refrigeration and heating water by one heat pump system, and heat the water tank by the waste heat of air conditioner refrigeration, thereby avoiding the technical problem that the heating and heating water in the prior art multi-connected air conditioner are not simultaneously performed, and improving the use experience of the user.

The invention discloses a local space oxygen enrichment control system and method based on an oxygen selective permeable membrane, belongs to the technical field of air purification, environment control and membrane separation, and aims to solve the problems that the indoor oxygen concentration cannot be actively and efficiently increased and compact integration is difficult in the prior art. The system integrates an outdoor fresh air fan, a switching valve, an oxygen enrichment membrane device, an air pump, an indoor air return and supply fan, a gas monitoring control unit, an outdoor exhaust fan and the like, and a control unit dynamically regulates and controls a switching valve passage, the rotating speed of each fan and start and stop of the air pump according to the difference between oxygen sensor data and preset target oxygen concentration; air selectively passes through the oxygen-enriched membrane device to generate oxygen-enriched air or is fed into a room through a bypass air path, and the indoor oxygen concentration is actively stabilized at 21%-26%. The system is suitable for local spaces such as residences and offices, active oxygen enrichment and environment control can be achieved, the air quality is improved, and meanwhile low energy consumption, safety and comfort are taken into account.

The invention discloses a new energy ventilation and heat exchange device, and relates to the technical field of air conditioning devices.The device comprises a shell, a mounting barrel is fixedly connected to the interior of the shell, and a ventilation and heat exchange mechanism used for extracting high-temperature air in a workshop is arranged in the mounting barrel; an auxiliary mechanism for assisting the ventilation and heat exchange mechanism in extracting high-temperature air is further arranged in the mounting cylinder, air in the workshop can be extracted by changing the distance between a flow guide plate and fan blades and the included angle between a matching plate and the fan blades and rotating the fan blades, the ventilation and heat exchange effects are achieved, and the service life of the workshop is prolonged. And through linkage cooperation of the auxiliary mechanism and the gain mechanism, the heat production rule of'stage work 'of equipment in the workshop is adapted, efficient ventilation of'adjustment as needed' is achieved, the situation that high-temperature air in the workshop cannot be exhausted in time is avoided, and the stability of air adjustment in the workshop can be effectively improved.

The invention provides an attenuator for ducted air flow systems such as heating, ventilation and air conditioning systems arranged to direct the airflow into the attenuator by reducing the airflow path geometry into a central channel surrounded by absorbing material to damp resonant modes to reduce noise more uniformly across the desired frequency spectrum than resistive attenuators.

The invention discloses a clean storage system for a household breathing machine. The machine body is provided with a breathing machine placing area, a storage device, an air purification system and a display control component, an air outlet is at least formed in the breathing machine placing area or the part, close to the breathing machine placing area, of the machine body, the storage device is provided with a storage chamber, an exhaust port and a storage port capable of being opened and closed, and the storage chamber is communicated with an air supply device. The air purification system is provided with a fan, an air purification device, an air outlet and an air inlet, an airflow channel in the machine body in the air outlet direction of the air purification device is a clean air area, the air outlet communicates with the airflow channel, the breathing machine containing area forms the clean air area, and the air supply device sucks clean air. The household breathing machine platform has a special platform space for placing various types of household breathing machines, has an air source filtering and purifying function, and has the advantages that accessories / parts of the household breathing machines can be cleanly stored, indoor environment air can be purified, and the like.

An off-ridge roof ventilation device for placing on an opening of a roof deck. The ventilation device comprises an elongated main hood with a curved shape. The right end of the main hood is closed by a right-side panel, and the left end of the main hood is closed by a left-side panel. The main hood comprises a perforated top face and a venting opening on a bottom face. A throat panel is placed on the bottom face of the main hood in a manner to reduce the venting opening. A perforated interior panel is placed between the top face of the main hood and the throat panel to eliminate wind driven rain and / or snow even in high wind situations. The perforations are preferably designed as mini-louvers, wherein the mini-louvers of the main hood and the mini-louvers of the throat panel comprise the same shape and count the same number.

An indoor air cleaning system with a networking mechanism is disclosed and applied in an indoor field (A) for detecting and cleaning air pollution completely. A real-time air quality monitoring in the indoor field (A) is achieved by arranging plural gas detectors (A), at least one gas molecule control hardware device (2), at least one air conditioning device (3) and a networked cloud computing service device (4) in the indoor field (A) and forming an intelligent linked system by the arranged gas detectors (1) in an outdoor filed and the indoor field (A). Meanwhile, the air pollution in the indoor field (A) is also detected and intelligently compared with an ambient air quality status, and an air guiding volume of an air guiding fan (21) is instantly controlled according to the air quality. Whereby an energy saving benefit of the effective controlling operation of the purification device is achieved.

The UHPC assembly type machine room structure comprises a machine room enclosure bulkhead cylinder body, a first end cover and a second end cover, wherein the machine room enclosure bulkhead cylinder body is prefabricated by adopting an ultra-high performance concrete UHPC material; the machine room enclosure bulkhead cylinder body is provided with a bottom plate and two side walls, and the machine room enclosure bulkhead cylinder body is provided with a first opening end and a second opening end which are oppositely arranged; the first end cover and the second end cover are respectively arranged at the first opening end and the second opening end; the two end covers are provided with smoke suction and exhaust ports used for being connected with a ventilation pipeline. A machine room access door is arranged on one side wall; an internal smoke exhaust pipeline is arranged in the machine room enclosure bulkhead cylinder body, the two ends of the internal smoke exhaust pipeline are connected with the smoke suction and exhaust ports in the first end cover and the second end cover respectively, and the fan is arranged on the internal smoke exhaust pipeline. The UHPC shell is adopted and serves as an outer enclosure material of the machine room structure at the same time, the functions of enclosure, decoration, structural bearing and partial fire prevention are achieved, and building structure decoration and function integration is achieved.

The invention relates to a UHPC-based fabricated fire-fighting smoke exhaust fan room structure and a construction method thereof, the room structure comprises a main body structure, and the main body structure is prefabricated by adopting an ultra-high performance concrete UHPC material; a fan is arranged in the internal space of the main body structure; the main body structure is provided with a machine room enclosure bulkhead cylinder body and an end cover side wall. Wherein the machine room enclosure bulkhead cylinder body is provided with a bottom plate, a first side wall and a second side wall, the first side wall and the second side wall are connected with the bottom plate and vertically arranged in parallel, and a first opening end and a second opening end which are oppositely arranged are arranged at the two ends of the machine room enclosure bulkhead cylinder body in the horizontal direction respectively; the end cover side wall is provided with a first end cover and a second end cover which are respectively arranged at the first opening end and the second opening end; the first end cover and the second end cover are each provided with a smoke suction and exhaust port, and the smoke suction and exhaust ports are used for being connected with a ventilation pipeline. The UHPC shell is adopted, the advantages of being high in strength and good in fire resistance are achieved, the prefabricated assembly type structure is adopted, construction is convenient, and efficiency is high.

A method comprising detecting an indoor carbon dioxide level; detecting an outdoor fine dust level; driving an air supply fan and an exhaust fan such that an air supply amount of the air supply fan is greater than an exhaust amount of the exhaust fan based on detected indoor carbon dioxide level and outdoor fine dust level; and performing a first indoor pressure control of detecting an indoor pressure and controlling the air supply fan and the exhaust fan. In the indoor pressure control, based on the detected indoor pressure being less than a first set value, a number of revolutions per minute of the exhaust fan is controlled to be decreased, and based on the detected indoor pressure is greater than or equal to a second set value greater than the first set value, the number of revolutions per minute of the exhaust fan is controlled to be increased.

The utility model discloses a heat exchange unit, and relates to the technical field of machine room air conditioners. The two rows of heat exchange core bodies are arranged on the rack in parallel in the first direction, and the heat exchange core bodies are obliquely arranged, so that the outdoor air inlet faces and the outdoor air outlet faces of the heat exchange core bodies intersect with the first direction and the second direction, and the second direction is perpendicular to the first direction; the spraying system comprises two spraying devices corresponding to the heat exchange core bodies, and each spraying device comprises a first spraying set located on the outdoor air outlet side of the corresponding heat exchange core body and a second spraying set located on the outdoor air inlet side of the corresponding heat exchange core body; the multiple nozzles of the first spraying set are sequentially arranged in the direction parallel to the outdoor air outlet face, and the multiple nozzles of the second spraying set are sequentially arranged in the direction parallel to the outdoor air inlet face. The spraying mode and the spraying water amount of the spraying system can be adjusted according to different working conditions, so that the unit can better save energy and water under the conditions of different temperatures and humidity.

The invention relates to an assembly type integrated fire-fighting smoke exhaust fan room structure which comprises a machine room enclosure bulkhead cylinder body which is provided with a bottom plate, a first side wall and a second side wall, the first side wall and the second side wall are connected with the bottom plate and vertically arranged in parallel, and the two ends of the machine room enclosure bulkhead cylinder body in the horizontal direction are provided with a first opening end and a second opening end which are oppositely arranged correspondingly; the end cover side wall is provided with a first end cover and a second end cover which are respectively arranged at the first opening end and the second opening end; smoke suction and exhaust ports are formed in the first end cover and the second end cover and are used for being connected with a ventilation pipeline; the machine room access door is arranged on the first side wall or the second side wall and can be opened and closed; the fan is arranged in an internal space formed by the machine room enclosure bulkhead cylinder body, the first end cover and the second end cover; the machine room enclosure bulkhead cylinder body, the first end cover, the second end cover and the machine room access door are all of a prefabricated concrete structure. The fabricated integrated design is adopted, the cost is low, the self weight is light, fireproof performance is achieved, and the advantages of being stable, reusable, attractive and the like are achieved.

The utility model discloses a dehumidification and ventilation mechanism for an airport comprehensive pipe gallery, and relates to the technical field of comprehensive pipe gallery ventilation. The comprehensive pipe rack comprises a comprehensive pipe rack, a first dehumidification and ventilation mechanism and a second dehumidification and ventilation mechanism, the first dehumidification and ventilation mechanism comprises an exhaust pipe, the first dehumidification and ventilation mechanism and a temperature and humidity sensor are arranged to detect and monitor the temperature and humidity in the comprehensive pipe rack in real time, and when the humidity exceeds a threshold value, the second dehumidification and ventilation mechanism is started; equipment is connected into the first dehumidification and ventilation mechanism to conduct dehumidification and ventilation internal circulation, one fan and one condenser can correspondingly process air circulation in three areas, normal circulation is conducted in other areas, the controller gradually increases the power of the fan along with the increase of the area corresponding to the fan, the dehumidification and ventilation efficiency is improved, and the energy consumption and investment cost are effectively reduced. And when the temperature and the humidity in the comprehensive gallery pipe are normal through communication with the external ventilation building, external fresh air enters, and the use energy consumption is reduced.

A misting fan includes a base, a fan bracket, a driving device and a misting assembly. One end of the fan bracket is arranged on the base and is rotatably connected to the base; a fan main body is arranged at another end of the fan bracket. The driving device is arranged on the base, is connected to the fan bracket, and is configured to drive the fan bracket to rotate. The misting assembly is arranged on the fan main body, and a misting direction of the misting assembly is the same as an air outlet direction of the fan main body. The misting fan can reduce the noise during the rotation of the misting fan.

The invention discloses an energy-saving type ventilation curtain wall and a construction method thereof. The ventilation curtain wall comprises a frame, a mounting piece, an inner-layer curtain wall body, an outer-layer curtain wall body, a shutter, a first meshing piece, a second meshing piece, a driven wheel, a driven piece, a multi-class sensor, a flow guide piece, a ventilation opening, an adjusting piece, a linear driving assembly and a purification assembly. A main control chip is arranged on the outer side of the inner-layer curtain wall; a flow guide piece on the inner side of a frame guides airflow; a ventilation opening and an adjusting piece are matched to control the ventilation quantity; a purification assembly purifies air; the construction method comprises the steps of S1, preparation before construction, S2, base layer treatment, S3, installation of the frame and the inner-layer curtain wall, S4, installation of the outer-layer curtain wall and the flow guide part, S5, installation of the power mechanism, S6, installation of the sensor and the purification assembly and S7, system debugging. Excessive exchange of indoor and outdoor heat can be reduced, energy consumption is reduced, the system adapts to different climates, construction is easy and convenient, and efficiency is high.

The invention relates to the technical field of curtain walls, and provides a building energy-saving curtain wall which comprises a curtain wall body, the curtain wall body comprises a frame, outer glass arranged on the frame and inner glass rotationally connected to the frame, a cavity is formed between the outer glass and the inner glass, and an air inlet is formed in the outer glass; the curtain wall body is provided with a filtering assembly, the filtering assembly is used for filtering dust of air entering the cavity from the air inlet, the filtering assembly comprises a gauze element arranged in the cavity, the gauze element is obliquely arranged, the upper end of the gauze element is inclined towards the inner glass, and the lower end of the gauze element is inclined towards the outer glass. The lower end of the gauze element inclines towards the outer glass, and a driving assembly used for driving the gauze element to move in the length direction of the gauze element is arranged on the frame. According to the invention, the position for adsorbing dust before the gauze element is changed, and the retention amount of subsequent dust and the circulation amount of air are improved, so that the filtering effect and the ventilation performance are improved.

The invention provides an automobile fireproof cover. The automobile fireproof cover comprises a top plate; the bottom supporting frame is located below the top plate and is in a hollow ring shape; the upper end of the cover cloth is connected with the edge of the top plate, and the lower end of the cover cloth is connected with the bottom support frame to form a closed space; the telescopic columns are multi-stage sleeves and do telescopic motion in the vertical direction, the upper ends of the telescopic columns are fixedly connected with the top plate, and the lower ends of the telescopic columns are fixedly connected with the bottom supporting frame; the telescopic control assembly is connected with the telescopic columns, controls the telescopic columns to stretch out and draw back synchronously, and drives the cover cloth and the bottom supporting frame to be unfolded downwards or folded upwards relative to the top plate for storage. A stable closed space is formed through automatic unfolding of a pneumatic mechanical structure, the functions of active cooling and smoke discharging are integrated while a fire source is efficiently isolated and explosion spreading is prevented, the safety of rescue workers can be guaranteed, the fire extinguishing efficiency is improved, and storage is convenient.

The invention provides an energy-saving control method and system for a ventilation system. The energy-saving control method comprises the following steps: constructing a fan-system matching model comprising a fan performance curve and a system resistance curve; acquiring operation state parameters of the ventilation system in real time; based on the fan-system matching model and the operation state parameters, dynamically calculating a target operation working point of the fan by using an optimization algorithm; according to the target operation working point, the fan rotating speed and the system valve opening degree are adjusted, and dynamic matching of the system air volume and pressure is achieved; and continuously monitoring the working condition change of the system, triggering optimization calculation to regenerate a target operation working point when the working condition change exceeds a set tolerance, and carrying out self-adaptive energy-saving feedback adjustment. Compared with a fixed working condition, the target operation working point determined in a dynamic mode can respond to system resistance change, it is better guaranteed that the draught fan stably operates in a high-efficiency area through self-adaptive energy-saving feedback adjustment, energy consumption is reduced, and meanwhile operation risks are effectively reduced.

The invention discloses a multi-mode vortex ring air supply device and a control system, and the device comprises an air storage hollow sleeve which is internally provided with an annular cavity and is provided with an eccentric air control body; the sealing plate is installed on the eccentric air control body and attached to the inner wall of the air storage hollow sleeve, and the annular cavity is dynamically divided into four air storage cavities which are isolated from one another; a transmission shaft of the driving motor penetrates through the air storage hollow sleeve and is rotationally connected with the eccentric air control body, so that the distance between the eccentric air control body and the inner wall of the air storage hollow sleeve is periodically changed, and each air storage cavity is compressed to generate vortex ring airflow; the air controllers are sequentially arranged above the air storage hollow sleeve from inside to outside in the radial direction; the wedge-shaped extrusion blocks are arranged in the receding grooves of the air storage hollow sleeve and driven by the electric push rod to move in the radial direction so as to downwards extrude the air controllers. And the sealing valves are arranged in the air holes, and when the pressure air controller is extruded downwards, the sealing blocks are driven to move downwards to achieve opening and closing combination of the different air holes, so that the air supply mode is switched, and the air supply efficiency and the comfort degree are improved.

The invention discloses a heat pump type efficient dehumidification device with a waste heat recovery function, and belongs to the technical field of efficient dehumidification devices. A temperature locking cavity is formed in the center of the interior of a dehumidification base, a first hot-pressing dehumidification box and a second hot-pressing dehumidification box are symmetrically arranged at the two ends of the temperature locking cavity, heat pump storage boxes are arranged at one ends of the hot-pressing dehumidification boxes side by side, and a flow guide center frame is arranged in the center of the interior of the second hot-pressing dehumidification box; the device has the remarkable advantages that firstly, a high-temperature primary dehumidification and low-temperature secondary dehumidification grading mode is adopted, the design of a zigzag flow channel and a symmetrical cavity is matched, the dehumidification efficiency is high, continuous operation can be kept during cavity dehydration, and constant temperature and low humidity of the environment are ensured; secondly, a whole-process waste heat utilization system is constructed, cold water is converted into hot water through cold water spraying, heat exchange arc piece circulation and the like, meanwhile, waste heat of a temperature locking cavity is recycled, and energy waste is reduced; and hot water and waste water are treated in order through the double-pipe hot drain valve, and environmental protection and economical efficiency are both considered.

The invention discloses a multi-source data fusion-based air volume dynamic adjustment method of a fume hood for a clean environment, particularly relates to the technical field of clean environment control, and aims at solving the problem that air volume adjustment of an existing fume hood cannot give consideration to front air suction safety, pressure difference stability and overall energy conservation. A basic operation data set is formed by collecting and filtering window opening and cabinet air speed, an air volume demand value and an initial priority parameter are calculated according to the data set and a room use state mark to form a demand data set, and a deviation memory parameter and a fluctuation influence parameter are calculated by fusing room pressure difference data and the availability of an exhaust fan. Obtaining a stable control priority adjustment coefficient through a time decay score learning model, correcting the priority, distributing the target exhaust air rate and the exhaust fan output, forming a target distribution result, comparing the target distribution result with the actual air valve opening degree and the exhaust fan output state, calculating the adjustment amount, and issuing a control instruction according to the priority; and the deviation record feedback updating coefficient and the demand value are verified in the control period to realize self-adaptive adjustment.

The invention relates to the technical field of electrochemical energy storage system integrated arrangement and environment safety control, and provides an all-vanadium redox flow battery system for underground space arrangement and an environment control method thereof. The system comprises modular cabin body units, a separate electric pile cabin, an electric cabin and a liquid storage chamber, the electric pile cabin is connected with a main exhaust channel (an exhaust fan and an anti-backflow element) and a controlled air supply channel (a filtering assembly, an electric adjusting air supply valve and a pressure stabilizing part), and is provided with a pressure relief channel and a pressure relief air valve; a pressure difference measuring unit and a constant-current sampling unit are configured to output the static pressure difference inside and outside the cabin, the gas concentration and the sampling effectiveness; and the master controller identifies the disturbance working condition based on the sampling effectiveness and the differential pressure change rate, and switches the voltage stabilization closed loop and the hierarchical linkage control. Through cooperation of gas circuit decoupling, sampling credibility and anti-disturbance control, differential pressure and concentration distortion caused by ventilation / air supplement disturbance of the underground garage can be reduced, false triggering, missed triggering and frequent oscillation are reduced, and the operation safety and control stability of the system are improved.

The fresh air system comprises a sensing module, a decision module, an execution module and an interaction module, the output end of the sensing module and the output end of the interaction module are electrically connected with the input end of the decision module, and the output end of the decision module is electrically connected with the execution module; the decision module comprises a central controller; the sensing module comprises a plurality of indoor sensing units and an outdoor sensing unit; the execution module comprises a frequency conversion fan, an air processing unit, an outdoor fresh air opening, a first intelligent air supply opening, a second intelligent air supply opening, a centralized air return opening and an indoor exhaust opening. The output ends of the indoor sensing units and the output ends of the outdoor sensing units are in communication connection with the input end of the central controller. The output end of the central controller is in communication connection with the frequency conversion fan, the air processing unit, the outdoor fresh air opening, the first intelligent air supply opening, the second intelligent air supply opening and the concentrated air return opening, and therefore the environment monitoring, intelligent control and execution functions of the novel system are achieved.

The utility model relates to the technical field of door and window mechanisms, in particular to an environment-friendly aluminum alloy door and window mechanism which comprises a door and window, and a blocking device is fixedly connected to the upper end of one side of the door and window. The blocking device comprises a mounting shell, two ends of the mounting shell are provided with filter screens with a lampblack filtering function, one end of the mounting shell is fixedly connected with a driving motor, one end of a main shaft of the driving motor penetrates through one side of the mounting shell and is fixedly connected with a connecting rod, and the outer side of the connecting rod is fixedly connected with an extrusion block; the upper end of the guide block is fixedly connected with an extrusion spring, one side of the guide block is fixedly connected with a guide rod, one end of the guide rod is fixedly connected with a piston, the inner side of the mounting shell is fixedly connected with a mounting plate, the upper end of the mounting plate is provided with an empty bin, and the inner side of the mounting plate is provided with a pipeline. Therefore, the service life of the door and window is prolonged.

The utility model discloses a blade angle adjusting type air valve device capable of improving the ventilation efficiency of an air pipe, relates to the technical field of adjusting type air valve devices, and aims to solve the problems that dust is adhered to the surface of a blade after an existing adjusting type air valve is used for a long time, smooth flowing of air is hindered, the air valve cannot accurately control the air flow, and the ventilation efficiency of the air pipe is affected. The air valve shell is arranged on the outer side of the air valve body, the air valve blades are arranged in the middle of the interior of the air valve shell at equal intervals, the air valve blade rotating shafts are installed in the middles of the air valve blades, the air valve blades are arranged in the air valve shell, and the air valve blades are arranged in the air valve shell. A transmission bin is arranged at the upper end of the inner wall of the air valve shell, a dust removal mechanism storage bin is arranged at the lower end of the inner wall of the air valve shell, lifting lead screws are installed on the two opposite inner walls of the air valve shell, dust removal mechanism sliding blocks are installed on one sides of the lifting lead screws in a transmission mode, and a dust removal mechanism is fixedly installed between the two dust removal mechanism sliding blocks.