30results about How to "Improve indoor environmental quality" patented technology

The invention discloses a jet-flow motion measuring device in a scale model based on PIV, and relates to the technical field of laser measurement. The jet-flow motion measuring device in the scale model based on the PIV includes a laser light source system, a synchronous control system, a flow field imaging system, a particle image processing and analysis system, a movable sliding table system, atracer particle generator, a computer and a scale model; and the movable sliding table system includes a camera horizontal sliding table, a camera vertical sliding table, a laser device horizontal sliding table, a laser device vertical sliding table, a proximate matter frame, a transmission system and a sliding table automatic control system. Through the implementation of the jet-flow motion measuring device in the scale model based on the PIV, the limitation that an existing PIV testing technology has a small single measurement range is overcome, continuously measuring in the whole measuringarea can be carried out successively, the overall time-averaged flow information of the measuring area can be acquired, and the application scope of the PIV technology is greatly expanded.

The invention relates to a convection-type heater with an air purifying function. The convection-type heater comprises a casing and is characterized in that an air outlet louver window is arranged on the upper side wall of the casing; an air return louver window is arranged on the lower side wall, opposite to the air outlet louver window, of the casing; a cross-flow fan and an electric heating unit are arranged in the inner cavity of the casing; an air inlet of the cross-flow fan faces the air return louver window, and an air outlet of the cross-flow fan faces the air outlet louver window to form an air inlet / outlet channel structure; the electric heating unit is arranged between the air outlet of the cross-flow fan and the air outlet louver window to form a convection-type circulating hot air structure; an air filtering layer is arranged at the air return louver window to form a convection-type heater structure with the air purifying function. According to the convection-type heater with the air purifying function, the problems of poor air purification effect and low heating efficiency in the prior art can be solved; the convection-type heater with the air purifying function has the prominent beneficial effects that the air purifying effect is good, the heating efficiency is high, and particularly, the quality and the effect on filtering organic substances, such as bacteria, ozone and formaldehyde, are good.

The invention discloses a prefabricated building prefabricated wallboard convenient to connect and fix and a mounting method thereof. Integral connecting bumps are arranged on the outer walls of bothsides of a connecting piece body of a connecting piece, the connecting bumps are matched with connecting clamping grooves to complete clamping and fixing connection between a wallboard structure and the connecting piece, cavities are formed in the outer walls of the connecting bumps, metal connecting bolts are mounted by using metal springs, after the connecting bumps are in clamping fit connection with the connecting grooves, the metal connecting bolts are inserted into limiting holes on the inner walls of the connecting clamping grooves, connection between the wallboard structure and the connecting piece is enhanced, transverse relative movement of a wallboard body under the action of an earthquake is avoided, the problem that the side edges of the connecting clamping grooves are damagedis solved, a mounting groove is formed in the middle, corresponding to the cavities, on the outer wall of the front surface of a connecting piece main body, a strong magnetic block is clamped and placed in the mounting groove, and extending and retracting of the metal connecting bolts are controlled by placing and removing the strong magnetic block, so that clamping installation of the wallboardstructure and the connecting piece is prevented from hampering.

The invention relates to a pure wood energy-saving window and door system, in particular to a pure wood internally-opening and energy-saving window and door system. In the pure wood internally-opening and energy-saving window and door system, from an indoor side to an outdoor side, frame strips of a window frame are respectively provided with a plurality of step surfaces, and sash strips of a window sash are respectively provided with a plurality of step surfaces; middle sash adhesive tapes are respectively arranged on the second step surface of the sash strip and respectively butt against the second step surface of the frame strip; outer frame adhesive tapes are respectively arranged on the third step surface of the frame strip and respectively butt against the third step surface of the sash strip; and a watertight shutter is arranged on a lower frame strip and provided with a fixing part, an upper watertight part and a lower watertight part, the fixing part is fixedly arranged on the lower frame strip, the upper watertight part is protruded out of the outer side face of the lower sash strip, the end part of the upper watertight part extends to the outer side face of the lower sash strip, and the lower watertight shutter is adhered to and arranged on the outer side face of the lower frame strip. The invention has the characteristics of attractive appearance and durability, sealing and dust prevention, high thermal insulation, high sound insulation and very ideal water tightness effect.

The invention discloses a glass curtain wall ventilation system device. The glass curtain wall ventilation system device comprises an indoor air quality sensor module, an outdoor temperature and humidity sensor, a master controller, an air intake and exhaust module, a communication module and a power supply, wherein the indoor air quality sensor module, the outdoor temperature and humidity sensor, the air intake and exhaust module and the communication module are connected to the master controller, and the indoor air quality sensor module, the outdoor temperature and humidity sensor, the master controller, the air intake and exhaust module, the communication module are connected to the power supply. By adopting the mode, the problem that air in a glass curtain wall building system is turbid is solved, and temperature regulation can be further achieved through automatic air exchange. A heat exchange system can further perform pre-heating or pre-cooling on outdoor supplementary air through indoor air to reduce load of a central air-conditioner when the difference of indoor and outdoor temperatures is large.

The invention relates to a pure-wood energy-saving door / window system, in particular to a pure-wood outside opening energy-saving door / window system. A step surface is arranged between the indoor-side wood frames and the wood sash of the energy-saving door / window; a mounting port is formed on the step surface; a sash middle rubber strip is arranged in the mounting port and placed against the indoor side of the wood sash; a mounting port is formed between the outdoor-side wood frame of the wood sash and the wood sash; a sash outer-side rubber strip is arranged in the mounting port and placed against the outdoor side of the wood frame; a groove is formed below the outdoor side of a lower frame strip; an aluminum alloy waterproof plate is fixed in the groove; the inner side of the waterproof plate is fixed in the groove through bolts; the outer end of the waterproof plate is extruded out of the outdoor side of the lower frame strip; the upper part of a lower sash strip is provided with a small cover flashing; and a sealing rubber strip is arranged between the small cover flashing and hollow glass. The invention has the advantages of beauty, durability, sealing and dust prevention, high insulation, high sound insulation and remarkably satisfactory watertight effect.

The invention relates to a three-dimensional fast-growing root plant device and a using method thereof. The interior of a plant siamese basin of the device is divided into three layers, wherein an upper layer is a planting layer, a middle layer is a breathable water sucking layer, and a lower layer is a water storage layer; a planting cup is arranged at the planting layer of the plant siamese basin; the plant siamese basin is connected on the outer vertical surface of a three-dimensional support body; the bottom of the three-dimensional support body is located on a substrate; a water tank is arranged inside the substrate; one end of a main water supply pipe is connected with a water source, and the other end of the main water supply pipe is upwards stretched into the interior of the three-dimensional support body; and one end of a water supply branch pipe is connected with the main water supply pipe in the three-dimensional support body, and the other end of the water supply branch pipe is penetrated through a side water inlet hole on the plant siamese basin for watering plants. The three-dimensional fast-growing root plant device has the advantages of enabling plants to grow in the same unit in a multi-variety multilevel manner, and solving the problems of containers for the high density three-dimensional cultivation of the plants, being suitable for large-sized multipurpose commercial and civil indoor and outdoor environmental modification engineering such as indoor and outdoor environmental modification, energy conservation in buildings, carbon dioxide utilization, treatment of exhausts of automobiles on roads, landscaping, three-dimensional environmental modification in family and the like.

The invention discloses a ventilating window with haze prevention and noise reduction functions. The ventilating window with the haze prevention and noise reduction functions comprises a tempered glass casement window body on the lower portion and a purifying and silencing channel on the upper portion. A haze-prevention purifying device and a silencing noise-reduction device are arranged in the purifying and silencing channel. The haze-prevention purifying device comprises an ultrasonic atomization module, a condensation module and a cold and heat regulation and sterilization module. The silencing noise-reduction device comprises a primary sensor, a secondary sensor, an active controller and a secondary sound source. An outdoor air inlet is formed in one side of the purifying and silencing channel, an indoor air outlet is formed in the other side of the purifying and silencing channel, a primary filter screen is mounted at the outdoor air inlet, and a fence type window screen is mounted at the indoor air outlet. Large particulate impurities in outdoor air are filtered out through the filter screen at the outdoor air inlet, dust and noise are then removed through the haze-prevention purifying device and the silencing noise-reduction device, noise-free fresh air enters a room through the window screen at the indoor air outlet finally, and the problem that the indoor environment of humans is effected by PM2.5 and noise is solved; and the cost is low, the practicability is high, and the ventilating window with the haze prevention and noise reduction functions can be used for residential buildings or office buildings with severe haze and noise pollution.

The invention discloses an indoor environmental pollution monitoring and purifying processing device system. The system comprises a main control processor, a GPS positioning unit, a non-biological pollution detection unit, a biological and microbe pollution detection unit, an interaction unit, a display unit, a purifying unit, a memory unit, a timing unit, a driving unit and a power supply unit, wherein the non-biological pollution detection unit is used for acquiring the indoor non-biological pollution information generated by building materials, decoration materials, household chemicals, cigarettes and combustion products, and the biological and microbe pollution detection unit is used for detecting the indoor biological and microbe pollution information generated by living garbage, air conditioners, indoor flowers, pets, carpets and furniture, further acquiring the non-biological, biological and microbe pollution information and analyzing and processing the acquired information. The system is advantaged in that a user can be protected from staying in the polluted environment, human body health is protected, indoor environment quality is optimized, and damage of non-biological, biological and microbe pollution on the human body can be reduced.

The invention provides an indoor heating and ventilation system using solar energy and a heat pump. In order to overcome the disadvantages of large energy consumption and waste pollution of the existing heating facilities and the defect that an air conditioning room has no central ventilation system, the indoor heating and ventilation system which is capable of using solar energy and the heat pump to heat in a complementary way and is used for supplying clean and fresh air to interiors is provided. By using the heating and ventilation system, indoor comfortable temperature and humidity can be provided, the quality of indoor air can be improved, and the energy utilization rate and the degree of operation automation are high.

The invention aims to solve the problem that an existing floor does not have an antibacterial function, and discloses a fabricated floor structure with an antibacterial function. The fabricated floorstructure comprises a floor, wherein a pressure sensor is fixedly mounted on the bottom surface of the floor; a cavity is formed in the floor; through grooves are uniformly formed in the top surface of the floor; antibacterial assemblies are uniformly arranged in the cavity; air bags are arranged in the antibacterial assemblies; through holes are uniformly formed in the surfaces of the air bags; spiral springs are fixedly connected into the air bags; cleaning layers are symmetrically arranged on two sides of the air bags; mounting rods are fixedly mounted among the cleaning layers and the inside of the floor; branch pipes fixedly communicate with the lower sides of the air bags; and vent pipes communicate among the branch pipes. The floor has the antibacterial function, the air bags can becontrolled by the pressure sensor, so that the air bags are treaded, sterilized and disinfected, and indoor environment quality is improved.

The invention discloses an environment-friendly antibacterial antiviral mildew-proof integrated interior wall coating which is prepared from the following raw materials in parts by mass: 200-300 parts of shell powder; the invention also provides a preparation method of the environment-friendly antibacterial antiviral mildew-proof integrated interior wall coating, and the preparation method comprises the following steps: S1, material preparation: preparing raw materials by a worker, and preparing the raw materials into required materials; the environment-friendly, antibacterial, antiviral and mildew-proof performance of the coating is improved by replacing materials for traditional coating production and adding new materials, chemical raw materials used in the past are reduced by adding natural materials, meanwhile, formaldehyde can be effectively adsorbed and converted into harmless substances, and the environment-friendly, antibacterial, antiviral and mildew-proof performance of the coating is improved. Meanwhile, the antibacterial and antiviral effects can be well achieved under visible light and ultraviolet light, strong antibacterial and antiviral effects can be achieved through nano-silver under the condition that no light source exists, mildew breeding can be avoided through natural materials, mildew can be prevented, it is guaranteed that the antibacterial and antiviral effects are achieved all day long, and the indoor environment quality is improved.

The invention discloses a bacterium removing humidifier. The bacterium removing humidifier comprises a base, a water tank, an atomization device, a pneumatic device, an ozone generation device and an air filter layer, wherein the atomization device, the pneumatic device, the ozone generation device and the air filter layer are arranged in the base. Ozone is generated through the ozone generation device, the generated ozone is input into water in the water tank through an ozone channel, the ozone decomposes and kills out bacteria, viruses and other pollutants in water, the water is clean and free of pollution, water mist generated through water cannot carry the bacteria or the viruses, and no harm is done to the human body. The anion output end of the pneumatic device stretches into an air outlet channel, the pneumatic device discharges air from the air outlet channel and blows generated anions out, and the structure is simple. The air filter layer is installed in the air outlet channel and comprises a cold catalytic agent filter net and a honeycomb activated carbon filter net and has extremely strong functions of sterilization, deodorization, mold prevention, dirt prevention and air purification, toxic and harmful gases in air are effectively degraded, multiple bacteria in air are effectively killed out, air is purified, and the indoor environment quality is improved.

The invention discloses a household ventilating fan capable of realizing circulating filtration by utilizing indoor air. The fan comprises a wall body, wherein an outer decoration cavity is arranged in the outer side end of the wall body; the inner wall of the outer decoration cavity is communicated with a circulation air cavity; a dust screen is arranged in the circulation air cavity; the inner wall of the circulating air chamber is communicated with a filter cavity; a main air suction fan and a filter cylinder are arranged in the filter cavity; a first inner decoration cavity and a second inner decoration cavity are arranged in the inner side end of the wall body; the inner wall of the first inner decoration cavity is communicated with an air outlet cavity; the inner wall of the second inner decoration cavity is communicated with an air inlet cavity; and an auxiliary air suction fan is arranged in the air inlet cavity. The household ventilating fan disclosed by the invention has theadvantages that a water vapor filter layer, a first filter layer, a second filter layer, a third filter layer and a plant layer are arranged in the filter cylinder to filter the air layer by layer, sothat the air is completely purified, the air quality is improved by a big margin and the indoor environmental quality is increased; and dust in outdoor air is directly filtered through the dust screen to facilitate the further air filtration and improvement carried out by the filter cylinder and facilitate the improvement of air quality.

The invention provides an indoor environment novel regulation and control system. The system comprises a power supply unit, a central processing unit, an energy consumption equipment unit, a heat exchange unit, a heating unit and an indoor environment monitoring unit; the power supply unit is electrically connected with the central processing unit and the energy consumption equipment unit; the central processing unit is electrically connected with the energy consumption equipment unit; one output end of the energy consumption equipment unit penetrates through the heat exchange unit and is communicated with the indoor space; the heat exchange unit is heated through the heating unit; the indoor environment monitoring unit provides feedback of acquired information to the central processing unit through the wireless communication unit; the central processing unit is used for controlling the working condition of the energy consumption equipment. According to the invention, the system is adopted, real-time regulation and control on temperature, humidity, oxygen content, air quality and the like of an indoor environment can be realized, the environment quality of a human activity place is effectively improved, and good operation of the whole system can be ensured by utilizing natural energy to supply power, so that the problems of environmental pollution, resource waste and the likecaused by using fossil energy are avoided.

The invention discloses a preparation method of internal wall water-based latex paint capable of purifying air and belongs to the field of latex paint. The preparation method comprises the following steps: carrying out ball milling on talcum powder, tourmaline and vermiculite and adding into a dispersant and mixing to prepare a suspension solution; taking substances including methyl methacrylate and the like as monomers to prepare silicone acrylic emulsion; mixing the silicone acrylic emulsion with substances including water, titanium dioxide and other auxiliary agents and the like to obtain a mixed solution; and finally, adding the suspension solution and a cross-linking agent into the mixed solution and stirring and mixing to obtain the internal wall water-based latex paint capable of purifying the air. According to the latex paint prepared by the invention, negative ions are added so that the effects of purifying the air and catalyzing formaldehyde can be realized and the paint is good for human health; and the latex paint has stable performances and does not easily have a layering phenomenon after being stored for a long time, and the quality of indoor environment can be improved.

The invention relates to the technical field of environmental protection, in particular to a photocatalyst air cleaner. The photocatalyst air cleaner comprises a cleaner body, a vacuum pump, a refrigeration structure, an exhaust outlet, a mounting bracket, a fixing hole and an air gathering structure. The cleaner body is provided with the vacuum pump for accelerating air circulation and the air gathering structure for gathering air and dedusting. The refrigeration structure for cooling is arranged at the end, close to the exhaust outlet, of the cleaner body. The cleaner body is provided with the mounting bracket and the fixing hole for installing and limiting. The cleaner body is provided with the vacuum pump to promote the internal air circulation of the cleaner body, the air gathering structure is used in a matched mode to facilitate the air to enter the inside of the cleaner body, the use of the air gathering structure facilitates the removal of larger particles of dust in the air,the mounting bracket is matched with the fixing hole in the cleaner body to facilitate the installation of the cleaner on a wall or placement of the cleaner on the ground according to the indoor building environment, and the installation efficiency of the cleaner is improved.

The invention discloses an Internet of Things environment control method and device based on context-aware. The method comprises the following steps: an environment control device in a network collects context-aware data to judge whether people are in a controlled zone or not; if people are in the controlled zone, the environment control device ensures that an intervalometer resets to a set time, humiture is processed by treating forecast average vote numbers as a PMV value, and then correspondence of the data is performed according to a set value table, a comfort degree mapping table and a control rule mapping table to obtain a control strategy of a controlled terminal; if people are not in the controlled zone, the environment control device detects whether a working controlled terminal exists or not, if no, no operation is carried out; if yes, the turning on or the turning off of the intervalometer is judged, if the intervalometer is turned off, the turning on of the intervalometer is performed, and when the intervalometer returns to zero, a control command is transmitted to close the working controlled terminal, if the intervalometer is turned on, countdown is performed continuously until the intervalometer returns to zero, or the controlled zone is detected again to ensure that whether people are in or not. The method and the device, provided by the invention, can realize intelligently real-time control of the controlled terminal to adjust the environment so as to meet comfort degree requirements of users.

The invention provides a manufacturing method for a non-formaldehyde adhesive artificial board with abrasion-resistant polyurethane soaked decorative paper as a veneering. The method comprises the following process steps that firstly, abrasion-resistant polyurethane resin is modulated; secondly, the abrasion-resistant polyurethane resin soaked decorative paper is prepared; and thirdly, the veneering of the non-formaldehyde adhesive artificial board is machined. The manufacturing method has the beneficial effects that the environment-friendly character of free of formaldehyde is achieved, the problem of free formaldehyde can be solved, and the indoor environmental quality can be improved; and for the defect that non-formaldehyde polyurethane resin is poor in abrasion resistance, 1-5% of nano-crystalline cellulose whiskers are added into the non-formaldehyde polyurethane resin, the surface abrasion-resistant performance of the non-formaldehyde polyurethane resin can be improved, and the use range of the non-formaldehyde adhesive artificial board is enlarged.

The invention relates to the technical field of environmental protection detection, and discloses an indoor and outdoor decoration engineering environmental protection monitoring device which comprises an indoor decoration pollution gas automatic monitoring system. The indoor decoration pollution gas automatic monitoring system comprises a processor, a GSM module, a power supply module, a sensingmodule, a Bluetooth module, a WiFi module, a liquid crystal display, an intelligent air conditioner, a keyboard and an audible and visual alarm. The processor is electrically connected with the GSM module, the power supply module, the sensing module, the Bluetooth module, the WiFi module, the liquid crystal display, the intelligent air conditioner, the keyboard and the audible and visual alarm. The Bluetooth module is in Bluetooth wireless connection with a smart phone; and the WiFi module is wirelessly connected with a computer client. Real-time monitoring of an indoor pollution gas is achieved, ventilation and temperature and humidity adjustment are performed indoors in time, safety of new house occupancy is improved, a user can be reminded that the indoor pollution gas exceeds a standard in time, ventilation is performed in time, indoor environment quality is improved, and harm to a human body is reduced.

The invention provides an air conditioner unit / device controller capable of controlling quality of indoor air, and a system. The controller comprises a sensor set, an analog-digital converter and a single-chip microcomputer, wherein the sensor set is composed of sensors arranged at different indoor positions, the analog-digital converter is connected with the signal output end of the sensor set, the single-chip microcomputer is connected to the signal output end of the analog-digital converter, the signal output end of the single-chip microcomputer is connected with the signal input end of a central computer, and the display signal output end of the single-chip microcomputer is connected with an LED display screen and an LCD display screen. The control system comprises a plurality of draught fan coil pipe air conditioner / air conditioner device controllers which can control the quality of indoor air, wherein the signal output ends of the draught fan coil pipe air conditioner / air conditioner device controllers are connected with the signal input end of the central computer, the signal output end of the central computer is connected with the signal input ends of a tail end air conditioner device, a fresh air system, a draught fan coil pipe air conditioner, a light illumination device and an air purifier. According to the air conditioner unit / device controller and the system, the detection range of the air conditioner system can be directly expanded to the portion surrounding people, and therefore the accuracy of control over an air conditioner is greatly improved, and the range of control over the air conditioner is greatly enlarged.

The invention discloses an industrial fan capable of automatically controlling air volume, and particularly relates to the technical field of fans. The industrial fan comprises a first shell, a firstmotor, a rotating shaft and a plurality of fan blades, the first motor is fixedly arranged in the first shell, the rotating shaft is fixedly arranged on an output shaft of the first motor, and the plurality of fan blades are fixedly arranged at the outer end of the rotating shaft. The rotating shaft and the fan blades are arranged in the first shell, a first hollow circular ring is fixedly arranged at one side of the first shell, a through opening is formed at one side of the first hollow circular ring, a plurality of first ventilation openings are formed at the front end of the first hollow circular ring, and a control mechanism is arranged at the front end of the first hollow circular ring. Outdoor air enters a room through a second ventilation opening, meanwhile, indoor air can penetrate through a second hollow circular ring and the first hollow circular ring to circulate to the outside, air circulation is prevented from being hindered, and the ventilation efficiency and effect areeffectively guaranteed.

The invention relates to a pure-wood energy-saving door / window system, in particular to a pure-wood outside opening energy-saving door / window system. A step surface is arranged between the indoor-side wood frames and the wood sash of the energy-saving door / window; a mounting port is formed on the step surface; a sash middle rubber strip is arranged in the mounting port and placed against the indoor side of the wood sash; a mounting port is formed between the outdoor-side wood frame of the wood sash and the wood sash; a sash outer-side rubber strip is arranged in the mounting port and placed against the outdoor side of the wood frame; a groove is formed below the outdoor side of a lower frame strip; an aluminum alloy waterproof plate is fixed in the groove; the inner side of the waterproofplate is fixed in the groove through bolts; the outer end of the waterproof plate is extruded out of the outdoor side of the lower frame strip; the upper part of a lower sash strip is provided with asmall cover flashing; and a sealing rubber strip is arranged between the small cover flashing and hollow glass. The invention has the advantages of beauty, durability, sealing and dust prevention, high insulation, high sound insulation and remarkably satisfactory watertight effect.

The invention relates to a pure wood energy-saving window and door system, in particular to a pure wood internally-opening and energy-saving window and door system. In the pure wood internally-opening and energy-saving window and door system, from an indoor side to an outdoor side, frame strips of a window frame are respectively provided with a plurality of step surfaces, and sash strips of a window sash are respectively provided with a plurality of step surfaces; middle sash adhesive tapes are respectively arranged on the second step surface of the sash strip and respectively butt against the second step surface of the frame strip; outer frame adhesive tapes are respectively arranged on the third step surface of the frame strip and respectively butt against the third step surface of the sash strip; and a watertight shutter is arranged on a lower frame strip and provided with a fixing part, an upper watertight part and a lower watertight part, the fixing part is fixedly arranged on the lower frame strip, the upper watertight part is protruded out of the outer side face of the lower sash strip, the end part of the upper watertight part extends to the outer side face of the lower sash strip, and the lower watertight shutter is adhered to and arranged on the outer side face of the lower frame strip. The invention has the characteristics of attractive appearance and durability, sealing and dust prevention, high thermal insulation, high sound insulation and very ideal water tightness effect.

The invention relates to the technical field of environmental protection, in particular to an air purification method based on a photocatalyst. According to the air purification method, air is purified by using an air purifier, and a vacuum pump for accelerating air circulation and an air gathering structure for gathering air and removing dust are arranged on a purifier body; a refrigeration structure for cooling is arranged at the end, close to an air outlet, of the purifier body; and a mounting bracket and a fixing hole for mounting and limiting are arranged on the purifier body. According to the method, the vacuum pump is arranged on the purifier body to promote the air circulation inside the purifier body; meanwhile, air enters the inside of the purifier body conveniently due to the cooperation with the air gathering structure in use; the use of the air gathering structure facilitates the removal of dust with larger particles in the air; and the mounting bracket is in cooperation with the fixing hole in the purifier body in use to facilitate the installation of the purifier on a wall or on the ground, the installation of the purifier is facilitated according to the indoor building environment, and the installation efficiency of the purifier is improved.

The invention relates to the technical field of environmental protection, in particular to an air purification method based on a photocatalyst. According to the air purification method, air is purified by using an air purifier, and a vacuum pump for accelerating air circulation and an air gathering structure for gathering air and removing dust are arranged on a purifier body; a refrigeration structure for cooling is arranged at the end, close to an air outlet, of the purifier body; and a mounting bracket and a fixing hole for mounting and limiting are arranged on the purifier body. According to the method, the vacuum pump is arranged on the purifier body to promote the air circulation inside the purifier body; meanwhile, air enters the inside of the purifier body conveniently due to the cooperation with the air gathering structure in use; the use of the air gathering structure facilitates the removal of dust with larger particles in the air; and the mounting bracket is in cooperation with the fixing hole in the purifier body in use to facilitate the installation of the purifier on a wall or on the ground, the installation of the purifier is facilitated according to the indoor building environment, and the installation efficiency of the purifier is improved.

The invention relates to an electric heating vacuum drying process for poplar fiber bricks. Poplars and calcium hydroxide are briquetted into wet bricks on a cold pressing machine, and demoulding is conducted after cold pressing is finished; drying is conducted for 0.5-3.0 h in an environment of which the vacuum degree is 0.06-0.08 MPa and the temperature is 170 DEG C. By means of the method, themould-pressing bricks are subjected to vacuum drying, and the moisture content of the dried bricks reaches 14.15%-36.65%. Compared with the methods of natural drying and hot air drying in the prior art, the electric heating vacuum drying process has the advantages that on the premise that the drying condition guarantees the drying quality, the drying efficiency is improved, and the drying speed isincreased; the dried bricks can be directly used as light wall brick materials, and are similar to light wood, and good in touch feeling, warm feeling and decorativeness; a built wall has good heat preservation, heat insulation, energy conservation, sound insulation and sound absorption; through the porous structure, the bricks have the desorbing and moisture absorption effects, thus the functionof adjusting the indoor air humidity is achieved, the indoor environment quality is improved, and the livability of houses is improved.