52results about How to "Improve indoor air" patented technology

The invention provides a formula and a preparation method of a natural plant health incense. The natural plant health incense is a solid health incense, and comprises 30-40wt% of Artemisia argyi, 3-5wt% of Atractylodes lancea, 5-10wt% of Acorus calamus Linn, 2-4wt% of Lysimachia foenum-graecum Hance, 5-7wt% of Pogostemon cablin, 5-7wt% of mint and 25-35wt% of an adhesive. The natural plant health incense provided by the invention adopts fragrant Chinese herbal medicinal plant powder with sterilizing and mosquito repelling effects, and does not contain essences, oxidants, pigments, pesticides, chemical adhesives or other chemical components, so the natural plant health incense is purely natural and purely environmentally-friendly, and has no toxic side effects.

The invention discloses an indoor decoration coating. The indoor decoration coating comprises the following components in percentage by weight: 20-60 percent of film-forming base stock, 0-30 percent of pigment, 0-40 percent of filler, 5-20 percent of bamboo carbon powder, 1-10 percent of assistant, and 10-30 percent of water. The bamboo carbon powder in the coating has good adsorption performance, and can adsorb formaldehyde released from the coating to effectively reduce the pollution of formaldehyde for long time, so that the indoor air can be improved.

The invention relates to tea ball which is prepared by kneading certain amount of tieguanyin into ball shape, drying and shaping and a preparation method thereof. The tea ball can be put indoor to improve air condition and also can be taken off to prepare tea according to requirement so as to produce mellow and fresh tea soup. The preparation technique comprises the following procedures of light-withering the collected green tea leaves, cooling them, rotating, frying, rolling, pre-roasting, rubbing and drying; during the frying, pre-roasting and drying processes, strictly and rationally controlling relation between roasting temperature and time transversely and longitudinally so as to uniformly heat inner tea and outer tea of tea ball so that the inner part is cooked and the outer part is not burnt. The whole tea and tea soup from tea ball is mellow, fresh and fragrant, and has long-lasting smell, thereby solving the technical problem which exists in the filed for a long time but cannot be solved, and having originality.

The invention discloses an air conditioner as well as a fresh air control method and device thereof. The air conditioner comprises a heat exchange air duct and an air treatment device, wherein the airtreatment device comprises a casing, a fresh air fan and an air purification module; a fresh air inlet and a fresh air outlet are arranged on the casing; the air purification module is arranged in the casing to purify air entering the fresh air inlet; an air volume adjusting valve is arranged on the air treatment air duct. The method comprises the steps as follows: acquiring outdoor air indexes and judging whether the outdoor air indexes meet a preset fresh air quality requirement; if no, controlling the fresh air fan to be started, and controlling the opening angle of the air volume adjusting valve according to the current operation mode of the air conditioner. Thus, the introduced fresh air volume can be adjusted effectively while the indoor air quality can be improved, and the user experience is improved.

A dead-corner-free sunshine collection three-dimensional greenhouse household vegetable garden capable of rotating by 360 degrees comprises a cultivation frame, a device box, an electronic control rotating plate and a transparent outer cover. The electronic control rotating plate is installed on the device box. The cultivation frame is installed on the electronic control rotating plate. The transparent outer cover is arranged outside the cultivation frame, the device box and the electronic control rotating plate in a spaced mode. The cultivation frame comprises multiple layers of planting plates used for planting vegetables, flowers and the like. The dead-corner-free sunshine collection three-dimensional greenhouse household vegetable garden is cylindrical, the planting plates can be manufactured into series products with different diameters, the number of the layers of the planting plates can be adjusted, the dead-corner-free sunshine collection three-dimensional greenhouse household vegetable garden is easy to install and operate, complete in function and quite capable of saving power, and the power is only tens of watts. The planting area is multiple times the occupation area, and indeed three-dimensional planting is achieved through the dead-corner-free sunshine collection three-dimensional greenhouse household vegetable garden. By means of the dead-corner-free sunshine collection three-dimensional greenhouse household vegetable garden, people in thousands of houses especially people living in cities and having no inch of land can eat pure natural pollution-free vegetables planted by themselves all year round, and the vegetable eating problem can be solved for part of troop personnel in border watchhouses.

The invention discloses an air conditioner and a control method and device thereof. The air conditioner comprises a heat exchange air duct and an air treatment device. The air treatment device comprises a housing, a fresh air fan and an air purifying module; a fresh air inlet and a fresh air outlet are formed in the housing, and the air purifying module is arranged in the housing to purify air entering the fresh air inlet. The method comprises the following steps of: acquiring indoor and outdoor air indexes and indoor and outdoor air humidity; controlling the fresh air fan to start when the indoor air index does not meet a first preset condition or the indoor air index meets the first preset condition, the indoor air humidity is smaller than the first preset humidity and the outdoor air humidity is greater the second preset humidity, and controlling the air purifying module to start when the outdoor air index does not meet the third preset condition till the indoor air index meets the second preset condition; and performing frequency-lowering control on the air conditioner when the indoor air humidity does not reach the second preset humidity. Therefore, the indoor air can be improved and the user experience is enhanced.

The invention belongs to a building internal wall coating and a preparing method thereof and relates to the field of coating production. The coating prepared through the method comprises 6-9 parts of putty, 3-6 parts of modified drift beads, 30-60 parts of waterborne emulsion, 20-30 parts of titania nanonpowder, 1-5 parts of film formation auxiliaries, 0.2-0.8 part of dispersing agents, 0.1-0.2 part of antifoaming agents, 0.1-0.2 part of wetting agents, 10-20 parts of fillers, 1-5 parts of adsorbent, 5-25 parts of air microcapsules and 1-5 parts of plant fiber. The putty comprises, by weight, 30-50 parts of light weight fireclay brick , 10-15 parts of perlite, 6-9 parts of high-alumina cement, 12-18 parts of mullite, 10-15 parts of bentonite, 2-4 parts of szaibelyite, 1-3 parts of poly (carboxylic acid ammonium salt, 3-5 parts of silicone acrylic emulsion, 5-8 parts of silica powder, 5-10 parts of jute fiber or viscose, 8-18 parts of water glass, 4-6 parts of dispersible emulsion powder and 10-15 parts of composite suspension liquid composed of aluminum oxide sol and silicon dioxide sol according to the mass ratio of 1:1. The building internal wall coating produced through the method can improve the indoor air quality effectively and lower energy consumption and has energy-saving and environment-friendly functions.

The invention discloses an air conditioner and a control method and device thereof. The air conditioner comprises a heat exchange air duct and an air treating device. The air treating device comprises a housing, a fresh air fan and a humidifying module. The fresh air fan is arranged in the housing, an air treating air duct separated from the heat exchange air duct is arranged in the housing, a fresh air inlet and a fresh air outlet are formed in the housing, and the humidifying module is arranged in the air treating air duct. The control method comprises the following steps of: acquiring the indoor air index and the indoor air humidity; separately judging the indoor air index and the indoor air humidity; and when the indoor air index and the indoor air humidity do not meet a predetermined value, controlling a fresh air fan to start till the indoor air index and the indoor air humidity reach the predetermined value. The method can improve indoor air by introducing humid fresh air when the indoor air quality is relatively poor and the indoor humidity is relatively low, so that the user experience is enhanced.

The invention belongs to a healthy and environment-friendly building inner wall coating and a preparation method thereof, and relates to the field of coating production. The prepared coating comprises waterborne emulsion, titanium dioxide nano powder, coalescing agents, dispersing agents, antifoaming agents, wetting agents, padding, adsorbent, air microcapsules, plant fibers and the like. By means of the produced building inner wall coating, indoor air quality can be effectively improved, energy consumption can be lowered, and the functions of energy saving and environmental protection are achieved.

The invention relates to anion paint and a preparation method thereof, which belong to the technical field of chemical industry. The anion paint mainly comprises the following raw materials in percentage by weight: 8 to 12 percent of deionized water, 1 to 3 percent of tourmaline, 0 to 1 percent of quartz, 0 to 1 percent of lithium potassium niobate and 83 to 91 percent of water-based paint. The anion paint is prepared by the steps of grinding the raw materials primarily, finely grinding the mixture, stirring the mixture uniformly to ensure the uniform distribution of the mixture and the like. When the anion paint is painted on an internal wall, the pain can release air anions durably, can accelerate blood circulation and can inhibit bacteria and remove odor.

The invention provides a dehaze device and relates to the field of air evolution. The dehaze device is mounted at the top of a building and comprises a cyclone dust removal device, a filtration device, an adsorption device and a power device, wherein the cyclone dust removal device is communicated with the filtration device, the filtration device is communicated with the adsorption device, and the power device is communicated with the filtration device and used for generating air flow sequentially passing by the cyclone dust removal device, the filtration device and the adsorption device. The device efficiently purifies dirty air through dust removal, impurity isolation, adsorption and other procedures and has a good purification effect. A filtration member of the device can be conveniently dismounted and cleaned, dust particles in the air can be removed, and harmful substances can be removed; the device is mounted at the top of a building, can be combined with a ventilation system of the building and can improve indoor air when haze clearing is performed.

A rotary non-dead-angle lighting soilless culture vegetable planting machine comprises a base, an electric control turntable and a culture frame; an electric control turntable is installed on the base, and a cultivation frame is installed on the electric control turntable, the cultivation frame comprises a plurality of layers of liquid planting trays, and two layers of liquid planting trays are fixedly connected through a plurality of connecting short columns; a planting cup fixing frame is placed in the liquid planting plate, a plurality of planting cup placing holes are formed in the planting cup fixing frame, and planting cups are placed in the planting cup placing holes; the planting cup is used for planting vegetables, flowers and other plants; fixing glass is arranged between most adjacent two connecting short columns of the same layer, and sliding glass serving as a sliding door is arranged between outer edges of an upper end face and a lower end face of the liquid planting plate. The planting machine is cylindrical and can be made into series products with different diameters, the number of layers of the cultivation rack can be adjusted, installation operation is simple, and functions are complete; an outer cover is omitted, a glass outer cover is directly arranged on the cultivation frame, raw materials are saved, cost is reduced, and the planting machine is more suitable for being purchased and used by the public.

The invention provides a formaldehyde detection handling method and device, a storage medium and an air purifier. The method comprises the steps that when the activity of a human body is sensed, the indoor temperature value is acquired, and the indoor temperature value and the preset temperature threshold value are compared; when the indoor temperature value is larger than the preset temperature threshold value, the indoor formaldehyde concentration value is detected; and if the indoor formaldehyde concentration value is larger than the first preset formaldehyde concentration threshold value,the intake air flow quantity of a current facility is controlled to be equal to the maximum intake air flow quantity so that the formaldehyde removal operation can be conducted. The formaldehyde detection handling method and device, the storage medium and the air purifier solve the problems that in the prior art, a user cannot detect the formaldehyde concentration in real time, and the indoor aircannot be timely and effectively improved. When the user is sensed, the convenience of the formaldehyde concentration real-time detection and the automatic formaldehyde removal can be provided for theuser, and the air quality is effectively maintained.

The invention discloses an air conditioner and a control method and device thereof. The air conditioner comprises a heat exchanging air channel and an air treatment device. The air treatment device comprises a shell and a fresh air draught fan. The fresh air draught fan is arranged in the shell. The shell is internally provided with an air treatment air channel which is isolated from the heat exchanging air channel, and the shell is provided with a fresh air inlet and a fresh air outlet. The control method comprises the following steps that indoor air indexes are acquired; whether the indoor air indexes meet a first preset condition or not is judged; if the indoor air indexes do not meet the first preset condition, the fresh air draught fan is controlled to be turned on, and the fresh air draught fan is not controlled to be in a ready state until the indoor air indexes meet a second preset condition. According to the method, whether the fresh air draught fan is controlled to be turned on or not is judged according to the indoor air indexes, in this way, when the indoor air quality is relatively poor, the air treatment air channel which is isolated from the heat exchanging air channel is used for introducing fresh air to improve the indoor air, and the user experience is improved.

The invention discloses an air conditioner and a control method and device thereof. The air conditioner comprises a heat exchange air duct and an air treatment device; the air treatment device comprises a shell and a fresh air fan, the fresh air fan is arranged in the shell, an air treatment air duct isolated from the heat exchange air duct is arranged in the shell, and the shell is provided with a fresh air inlet and a fresh air outlet. The control method comprises the steps that the indoor air index is acquired; whether the indoor air index meets a first preset condition or not is judged; if the indoor air index does not meet the first preset condition, the air treatment device is controlled to run at a muting gear when a muting instruction is received and controlled to be in a standby state till the indoor air index meets a second preset condition. According to the method, sounds brought by the fresh air fan can be controlled while indoor air is improved by introducing fresh air, and then the user experience is improved.

The invention relates to the technical field of air purification, and in particular relates to a method for solving indoor air pollution. The method comprises the following steps of: (1) carrying out steam spraying and sweeping on all surfaces and gaps indoors, and opening doors and windows in the process of spraying and sweeping, wherein 1 m<2> of the area is sprayed and seeped by the steam obtained by vaporization of 22mL of water; (2) spraying plant extracts in to furniture, wall surface and air, wherein the spraying quantity of the plant extracts is 10-15mL / m<2>; and (3) spraying photocatalyst, wherein the grain sizes of titanium dioxide in the photocatalyst are 6-10nm, the solid content is 2-4%, and the spraying quantity is 5-6mL / m<2>, and spraying is carried out at the place which is 30-40cm away from the spraying surface at a uniform speed. The method is environment-friendly, easy to operate, free of secondary pollution of indoor air, good in absorption and decomposition effects, and less in residue, and can furthest and thoroughly solve the indoor chemical pollution for once.

The invention relates to an indoor ecological interior wall coating belonging to the technical field of chemical industry. The coating mainly consists of deionized water, tourmalin, lithium niobate and water paint, and the materials are prepared in percent by weight: 8-10 percent of deionized water, 1-2 percent of tourmalin, 0-1 percent of lithium niobate and 87-91 percent of water paint. The coating is prepared by the following steps: initially crushing the materials, then accurately grinding the mixture, evenly stirring to enable the mixture to be evenly distributed and the like. The coatingcan persistently release negative air ions when coated on the interior wall while in home furnishings to let people breathe fresh air at home, can accelerate blood circulation and can inhibit bacteria and remove odour.

The invention discloses an environment-friendly anticorrosion and antibacterial negative ion coating for the interior wall in the technical field of interior wall coatings. The coating comprises the following components: 200-250 parts of polyvinyl alcohol, 150-200 parts of activated zeolite powder, 230-260 parts of nano-scale filler, 20-40 parts of preservative, 25-50 parts of mildew preventive, 80-160 parts of negative ions, 50-80 parts of titanium dioxide, 30-65 parts of pigment, 10-20 parts of curing agent, 10-15 parts of thickening agent, 15-30 parts of film forming agent, 5-10 parts of defoaming agent and 300-500 parts of water. The environment-friendly anticorrosion and antibacterial negative ion coating is capable of emitting negative ions beneficial to human bodies, removing harmful substances such as formaldehyde, improving the indoor air, effectively avoiding the propagation and reproduction of bacteria and killing various propagated bacteria, also good in antibacterial effect for Escherichia coli, staphylococcus aureus and fungi, quick in effect and long in controlled release period.

The invention provides a preparation method and application of a coating containing compound plant extracted essential oil, the compound plant extracted essential oil is prepared by using mixed enzymeto assist processing, the oil yield and the essential oil quality are obviously improved, and then the compound plant extracted essential oil is treated through cooperation by preparing a slow-release carrier and a surfactant; slow-release essential oil is formed by utilizing the dense gap adsorption function of the slow-release carrier, the health-care effect of the compound plant extracted essential oil is prolonged, and meanwhile, the performance of a paint film can be improved due to excellent mechanical properties of the slow-release carrier; the product prepared by matching the composite plant extracted essential oil with the mixed auxiliary agent, the emulsion and the filler can be widely applied to inorganic silicon coatings, putty powder, seal primer, emulsion paint and the like,and the composite plant extracted essential oil is pleasant in fragrance, fresh in smell, safe and non-toxic and can be slowly released in a coating, so that indoor air is improved, and the effects of calming nerves, relaxing mind, relieving mood, relieving psychological pressure, resisting anxiety and improving sleep for a long time are achieved. Besides, waste coal lime is adopted as a main material in a filler, so that the moisture-proof and water-proof effects are achieved, and energy conservation, emission reduction and waste utilization are facilitated.

The invention discloses an environment-friendly aluminum alloy window, and relates to the technical field of doors and windows. The problem that existing potted plants are located indoors at night fora long time and consume oxygen, and consequently the indoor air quality is prone to being affected is solved. According to the key points of the technical scheme, the environment-friendly aluminum alloy window comprises window frames, two sash frames arranged between the window frames, two vertical plates fixedly connected to the two sides of the window frames, and sliding pots arranged on the vertical plates; and a plurality of receding holes penetrating through the vertical plates are formed in one sides of the vertical plates, supporting plates fixedly connected to the sides, close to theoutdoor space, of the vertical plates and horizontally arranged are arranged at the bottoms of the receding holes, and the top surfaces of the supporting plates are parallel to the top surfaces of thereceding holes. During the day, the sliding pots are pushed to slide inwards, so that plants in the sliding pots are located in the indoor space, indoor air can be improved through photosynthesis, during the night, the sliding pots are pushed to slide outwards, so that the plants in the sliding pots are located in the outdoor space, and thus the indoor air is not affected by the respiration of the plants at night.

The invention discloses an automatic window capable of purifying air. The automatic window comprises a window frame, a sash and a connecting assembly, a first guiding plate is disposed on the inner side surface of a first vertical window edge, and the connecting assemblycomprises a first hinge block disposed in the first guiding plate and moving back and forth, a first hinge unit disposed betweenthe same side edges of the first guiding plate and the sash, a second hinge unit arranged on the inner side edge of a second vertical window edgeand the same side edge of the sash; the window frame isfurther provided with a driving mechanism for driving the first hinge block to move back and forth within the first guiding plate; and at least one filter assembly is disposed on a window body, and the filter assembly is an electrostatic dust filter assembly or a nano filter assembly. The window can realize automatic opening and closing of a hinged window, and filtration is realized.

The invention provides a forest bath purifying self-care spray, belongs to the field of air purification, and relates to an air purification self-care spray and a preparation method of the air purification self-care spray. The forest bath purifying self-care spray is characterized by being prepared from the following raw materials in parts by weight: 0-9.9 parts of cypress wood, 0-8.9 parts of yellow cinnamon root or stem, 0-9.9 parts of rosa multiflora, 0-15.9 parts of herba thymi vulgaris, 0-7.9 parts of pine wood, 0-8.9 parts of cupressus sempervirens wood, 0-9.9 parts of Taiwan cypress wood,, 0-9.9 parts of Japanese cypress wood,, 0-11.9 parts of fir wood, 0-8.9 parts of fir needle, 0-7.9 parts of herba menthae, 0-8.9 parts of Lawson cypress wood, 0-12 parts of orange peel, 0-14 parts of tribute orange peel, 0-10 parts of citrus reticulate peel, 0-12 parts of shaddock peel, and 0-20 parts of water. The production process comprises the juicing process combining the extracting technology with the squeezing extracting, meanwhile, the method combining low-temperature settling with high-speed centrifugation is matched, so that the plant stock solution is obtained, and then the steps of sterilizing, diluting, ingredient adding and re-sterilizing are carried out.

The invention discloses a shade curtain with a humidifier. The shade curtain comprises a curtain box. The curtain box is provided with the humidifier. The bottom of the humidifier is provided with a water storage area. An atomizer is provided above the water storage area. A curtain unit is provided below the curtain box. An inner layer of the curtain unit is a shade layer. The shade curtain is convenient to use, capable of humidifying indoor air and good for human health.

The invention discloses a constant-temperature comfortable pedestal pan seat, which comprises a seat main body, wherein limiting convex blocks are each arranged at two sides of the seat main body; anannular heating device is arranged in the seat main body; a horizontal mounting groove is arranged in the inner side of the seat main body; an aroma box is arranged in the mounting groove; a volatilizing port is formed in the side, facing an opening of the mounting groove, of the aroma box; the aroma box is filled with perfume; and a movable sealing plate is arranged between the opening of the mounting groove and the aroma box. According to the pedestal pan, odor, which is generated when a bathroom is used, can be removed, and air in the bathroom can be purified, so that using comfort can be improved.

The invention discloses a rotary all-dimensional lighting soil cultivation vegetable planting machine for a balcony. The machine comprises a base, an electric control rotary disc and a cultivation frame, wherein the electric control rotary disc is installed on the base; the cultivation frame is installed on the electric control rotary disc; the cultivation frame comprises a plurality of layers ofplanting discs; every two layers of planting discs are fixedly connected through a plurality of connecting short columns; fixing glass is arranged between most two adjacent connecting short columns onthe same layer; sliding glass serving as a sliding door is installed between the outer edges of the upper end surface and the lower end surface of a planting disc; planting splicing plates used for planting vegetables, flowers and the like are placed in the planting disc; the planting splicing plates enable the soil texture of the cultivated plants to be reduced, are light, simple and convenientand are convenient for planting; and a lot of water seepage and ventilation through holes are formed in the bottoms of the planting splicing plates. A glass outer cover is directly arranged on the cultivation frame, so that raw materials are saved, the cost is reduced, and the machine is more suitable for the public to purchase and use. Nutrient soil fills in the planting splicing plates, and thenfavorite vegetables and flowers are planted, so that fresh and healthy vegetables can be eaten, the environment can be beautified, and the air quality can be improved.

The invention discloses a teaching blackboard with dust removal function, which comprises a blackboard bracket, a blackboard belt, a main belt roller, an auxiliary belt roller, an electric motor, a transmission belt, a negative pressure fan and a dust collector, and the main belt roller and the auxiliary belt are The rollers are installed horizontally on the bottom and the top of the blackboard support respectively, a blackboard belt is installed between the main belt roller and the auxiliary belt roller, one end of the main belt roller is connected with the output shaft of the electric motor, and the main belt roller is connected to the The auxiliary belt roller is connected through the transmission belt, the negative pressure fan is connected with the outlet end of the dust collector, and the inlet end of the dust collector is connected with the inside of the blackboard support through a connecting pipe. The teaching blackboard with dust removal function of the present invention improves the current traditional blackboard dust flying everywhere during the wiping process, greatly improves the indoor air, and realizes the function of combined push-pull blackboard, which is convenient for all students in the room. It is clearly visible and helps to improve the quality of teaching.

The invention discloses a manufacturing method for a bamboo tube incense holder. The manufacturing method comprises the following steps of: 1) selecting materials: sawing an un-dried bamboo tube with a proper shape, keeping joint intervals at the two ends, selecting the bamboo tube with complete joint intervals, and forming at least one small hole in the joint interval at one end as a gas outlet; 2) cooking: putting the bamboo tube into a hot water container of 60-80 DEG C to stand for 10-20 minutes, heating water in the container to a boiling state and keeping the boiling state for 8-10 hours; 3) performing carbonization treatment; 4) cooling: cooling the bamboo tube treated in the step 3) and performing air-drying on the bamboo tube; and 5) adding perfume or spice. The bamboo tube incense holder can obviously improve indoor air, so that people feel pleasant; and the spice further can be added to achieve the long-term physical therapy effect, so that body health of people is promoted.

The invention relates to the technical field of glass window shading, and discloses an environment-friendly shading device capable of automatically adjusting the length according to the illumination angle for a glass window. The device comprises a shell, wherein sliding rails are arranged on the two side walls in the shell; a sliding plate is in sliding connection to the surfaces of the sliding rails; an elastic cover is fixedly connected to the surface of the sliding plate; a coil is movably connected into the elastic cover; a tooth plate is fixedly connected to the surface of the elastic cover; a lead screw is movably connected to the surface of the tooth plate; spring frames are movably connected to the positions, located on the two sides of the elastic cover, of the surface of the sliding plate; extrusion plates are movably connected into the spring frames; and bag-shaped plates are fixedly connected to the surfaces of the extrusion plates. A shading curtain is put down again, on the contrary, when light gradually leaves the surface of a photoresistor, the current in the coil is gradually reduced, the elastic force of the spring frames is gradually larger than the magnetic force of the coil, the lead screw is driven to reversely rotate to wind the shading curtain back, and the effect of automatically adjusting the shading position along with the illumination angle is achieved.

The invention discloses a node structure for an energy saving improvement of an internal circulation glass curtain wall. The node structure comprises existing building curtain wall stand columns, hollow glass, a heat insulation break bridge profile assembly, a top heat insulation break bridge profile, a bottom heat insulation break bridge profile, a ventilator and a fresh air pipeline, wherein thehollow glass is arranged on the indoor side of an existing building curtain wall, an internal circulation type dual-layer curtain wall is formed with the hollow glass and the outside glass curtain wall, an air layer is formed between the hollow glass and the existing building curtain wall, the heat insulation break bridge profile assembly is used for installing the hollow glass, and comprises twofirst heat insulation break bridge profiles, two second heat insulation break bridge profiles, a first heat insulation strip and a second heat insulation strip, the top heat insulation break bridge profile is used for fixing the top of the hollow glass, the bottom heat insulation break bridge profile is fixedly arranged on a beam at the bottom of the existing curtain wall, the ventilator is arranged in the bottom heat insulation break bridge profile, and indoor air of the air layer enters a fresh air system through the fresh air pipeline for filtering and circulating. The node structure purifies indoor air and meanwhile prevents indoor heat from diffusing, thereby saving energy.