37results about How to "Avoid air quality" patented technology

Personal air supply devices integrated with chairs are adapted for use in conjunction with building or vehicle ventilation systems. The personal air supply devices include ducts, a tube and a nozzle arranged to direct a portion of the air from the building or vehicle ventilation system at the facial zone of a person sitting in the chair. The personal air supply devices include airflow regulating devices for regulating the flow of air through the nozzle. The tubes and nozzle are configured to release air from the ventilation system very close to the nose and mouth of a person in the chair to prevent mixing with ambient air and maximize the cooling and refreshing effect of the conditioned air. The building or vehicle ventilation system may be operated at lower ventilation rates without causing discomfort to persons provided with personal air supply devices.

There is disclosed a bio-based polyurethane foam useful as rigid insulation in which the reactant portion of the B side is composed of a transesterified and hydroxylated derivative of vegetable oil, preferably soy and or linseed oil; water and minor amounts of catalysts and surfactant. The vegetable oil is obtained by reacting the oil with a bio-based, multifunctional hydroxyl compound such as glycerol, sorbitol, or fructose. The A and B sides are admixed in weight proportions of 20 to 60 parts organic polyisocyanate (A side) and 80 to 40 parts polyol (B side) per 100 parts of finished insulation. Preferably a tin catalyst and an alkyl diethylene diamine cocatalyst are used to minimize cure time of the foam insulation.

A moisture-proof sealing bag comprises a bag body and an exhausting valve. The bag body has an opening, which has a flexible belt on the opening end. A proper position under the flexible belt of the bag body has the exhausting valve. The exhausting valve is concealed inner the bag body, which comprises a valve body, an exhausting unit, a valve gate and an elastomer. The moisture-proof sealing bag has functions of moisture-proof and air-tightness so as to preserve the contents in the bag by use of sealing the opening of the bag with the flexible belt and exhausting the residual air with the exhausting valve.

The invention discloses an environment-friendly kitchen cooking fume emission system. The environment-friendly kitchen cooking fume emission system comprises a controller and further comprises an air supply device, a first filtering and cooling device, a second filtering and cooling device, a third filtering and cooling device and a fourth filtering and cooling device which are all connected with the controller; the air supply device is connected with the first filtering and cooling device; the second filtering and cooling device, the third filtering and cooling device and the fourth filtering and cooling device are sequentially connected to the rear of the first filtering and cooling device; a common grease dirt discharging device is arranged below the first filtering and cooling device and the second filtering and cooling device, a common draining device is arranged below the third filtering and cooling device and the fourth filtering and cooling device, and an exhaust device connected with the outside is arranged on the fourth filtering and cooling device. The environment-friendly kitchen cooking fume emission system effectively improves the quality of air in a kitchen, improves the hot environment of the kitchen, reduces the emission of waste gas through four-stage filtering and cooling and solves the problem that kitchen emissions pollute the environment.

The invention discloses numerical control automatic air energy tobacco leaf curing complete equipment which comprises a tobacco containing chamber and a heat supply chamber. An air energy heat pump system, a hot air circulation system, a moisture exhausting system, a waste heat recycling system, a cured tobacco leaf automatic moisture regaining system and a numerical control system are arranged in the heat supply chamber. The numerical control automatic air energy tobacco leaf curing complete equipment is heating equipment for transferring heat energy in air (or other media) into a chamber by using state changing of heating media through acting of a compressor according to the second law of thermodynamics; the design dimension of a curing barn is exactly the same as that in the national standard based on the dimension of a national tobacco standard curing barn, and thus standardization of national tobacco curing barn building is facilitated. Meanwhile, a traditional coal curing barn can be conveniently transformed. For the traditional coal curing barn, only an original heating chamber needs to be rebuilt without the need for changing a curing barn body, and thus unnecessary waste can be reduced.

An air gun with sucking function comprises a gun body, an air intake control set and an airflow switching and controlling element. The air gun with sucking function of the present invention employs the airflow switching and controlling element disposed inside the gun tube of the gun body for switching an airflow flowing direction and converting an airflow ejection into a sucking airflow in order to meet various work requirements by switching to different functions. When it is switched for sucking airflow for cleaning, dust can be prevented from flying around and therefore is healthier for breathing.

The invention discloses an intelligent control system for laboratory ventilation. The intelligent control system comprises a collecting unit, an analyzing unit, a ventilation unit and a control unit. The collecting unit is used for collecting laboratory internal image information. The analyzing unit is used for obtaining the laboratory internal image information collected by the collecting unit, conducting similarity contrast between the laboratory internal image information and preset image information and outputting a similarity contrast result S. The ventilation unit is used for conducting ventilation on the interior of the laboratory according to an instruction of the control unit. The control unit is in communication connection with the collecting unit, the analyzing unit and the ventilation unit, obtains the similarity contrast result S through the analyzing unit, compares S with a preset value and controls the ventilation unit to act according to the comparison result instruction.

A device, and method of using same, to evacuate aerosols generated proximate to teeth of a patient during dental procedures, including a central housing having a proximal end and a distal end. The proximal end defines a proximal housing opening and the distal end defines a distal housing opening having a first open area. The housing defines (i) at least one housing side port on each side of the housing and (ii) at least one internal passage in fluid communication with the distal housing opening, the proximal housing opening, and the housing side ports. The proximal end of the housing is shaped to be connectable to a conduit for a source of negative pressure. The device further includes a right-side cheek retractor and a left-side cheek retractor, each retractor defining a concave buccal-side surface, a convex oral-side surface, a retractor chamber, and at least a first arc of retractor openings (i) positioned along a portion of the oral-side surface, (ii) communicating with the retractor chamber, and (iii) having a first distribution of total open area along that retractor. A right-side arm extends between the housing and the right-side cheek retractor to support the right-side cheek retractor at a substantially fixed distance from the housing, and a left-side arm extends between the housing and the left-side cheek retractor to support the left-side cheek retractor at a substantially fixed distance from the housing. At least one right-side passageway connects one of the housing side ports with the retractor chamber of the right-side cheek retractor, and at least one left-side passageway connecting one of the housing side ports with the retractor chamber of the left-side cheek retractor.

The invention relates to the technical field of air conditioners, and particularly provides a control method of an air conditioner. The problem that an existing air conditioner control mode is not intelligent enough is solved. In order to achieve the purpose, the air conditioner is provided with a sterilization device, the sterilization device is a bipolar ion sterilization device, the bipolar ion sterilization device comprises a conversion part and an emission part which are electrically connected with each other, the conversion part is used for processing input power and then providing the power to the emission part, and the emission part comprises a plurality of bipolar emission heads capable of being switched between positive and negative electrodes and a plurality of negative emission heads. The control method comprises the steps that the air quality index of the outdoor environment is obtained; the interval where the air quality index is located is judged; and the operation mode of the sterilization device is controlled based on the judgment result. The operation mode of the sterilization device is controlled according to the interval where the air quality index of the outdoor environment is located, so that the operation mode of the sterilization device can be controlled according to the air quality of the indoor space, and the requirements of users are better met.

The invention belongs to a method used for improving the smell of automobile instrument boards. The method comprises following steps: a slush moulding system is used for providing PVC surfaces, wherein the slush moulding system is provided with a plurality of heating boxes, and 210 to 230 DEG C waste gas is exhausted by the heating boxes; the exhausted waste gas is divided into 80 to 100 DEG C lowtemperature gas flow and 130 to 150 DEG C high temperature gas flow; the low temperature gas flow is introduced into a baking box, the temperature of the baking box is increased to 60 to 120 DEG C through combination of the self heating capacity of the baking box, the PVC surfaces are introduced into the baking box for 2 to 6h of baking using the low temperature gas flow. According to the method,waste gas heat energy from slush moulding technology is recycled for baking of the demoulded PVC surfaces, so that harmful substances left in the PVC surfaces are released at high temperature states,so that the smell of automobile instrument board PVC surfaces can be improved reliably, and reduction of the quality of air in automobiles caused by the pungent smell of the PVC surfaces in using isavoided.

The invention discloses a vehicle-mounted air purifier. The vehicle-mounted air purifier comprises an overlaying skin upper cover, a middle shell, connecting pieces, a filter element cover plate, an air outlet pipeline, an air outlet grid, a filter element, a blower, an air quality sensor, a micro switch, a switch control board, a control circuit board and a vehicle gauge connector; a vehicle-mounted air purifier body is in communication connection with a vehicle through the vehicle gauge connector; the connecting pieces are connected with the middle shell; the vehicle-mounted air purifier body is connected with an armrest box of the vehicle through the connecting pieces; and the vehicle-mounted air purifier body is taken as a cover body of the armrest box. According to the technical scheme, the problems that human health is endangered due to the fact that harmful gases caused by the fact that inside vehicle air is circulated through the vehicle windows and the outside air enter the vehicle and harmful substances caused by the narrow space in the vehicle cannot be removed are solved, and the effects of making full use of the interior space, improvement of the air quality in the vehicle automatically, elimination of bacteria, disinfection and odor are achieved.

A splatter control apparatus for covering foodstuffs during cooking, having a flexible tension ring member, a frame member and replaceable disposable splatter control element. The frame is configured to cradle the ring member and the splatter control element, also is suited to rest on the top edge of any size and shape cooking vessel. The flexible ring member configured substantially to be properly held inside the inner side of the frame member securing the replaceable disposable splatter element between the ring member and the frame member during a cooking process thereby performs as a splatter control and filtration means. After use, the disposable splatter element is easily discarded creating minimal waste due to its negligible material content, averting the need for messy cleanup.

An air gun with sucking function comprises a gun body, an air intake control set and an airflow switching and controlling element. The air gun with sucking function of the present invention employs the airflow switching and controlling element disposed inside the gun tube of the gun body for switching an airflow flowing direction and converting an airflow ejection into a sucking airflow in order to meet various work requirements by switching to different functions. When it is switched for sucking airflow for cleaning, dust can be prevented from flying around and therefore is healthier for breathing.

The invention discloses a flue gas desulfurization and denitrification purification system, which includes a chimney, the left side of the chimney is fixedly connected with a smoke inlet pipe, the top of the chimney is fixedly connected with a first connecting air pipe, and the other side of the first connecting air pipe One end is fixedly connected with a desulfurization box, the right side of the desulfurization box is fixedly connected with a second connecting air pipe, the other end of the second connecting air pipe is fixedly connected with a denitrification box, and the right side of the denitrification box is fixedly connected with a third connecting air pipe. The present invention adsorbs the particles contained in the flue gas, prevents the flue gas containing particles from being discharged outdoors, causes a reduction in air quality, improves the purification rate of nitrogen oxides and sulfur oxides in the flue gas, and reduces the The content of dust particles can absorb the harmful substances in the flue gas, reduce the content of harmful substances in the flue gas, and achieve the advantages of environmental protection and purification, thus effectively solving the problem that the existing flue gas cannot be controlled and purified in time to destroy environmental problems.

The embodiment of the invention provides a primary air system air quality early warning method and device. The method comprises the steps that environmental data of a primary air system are obtained;the purification efficiency and the heat exchange efficiency of the primary air system are obtained according to operation of the environmental data; judgment is carried out according to a preset purification efficiency threshold value or a preset heat exchange efficiency threshold value, and if the purification efficiency is lower than the purification efficiency threshold value or the heat exchange efficiency is lower than the heat exchange efficiency threshold value, an early warning command is sent out. The device comprises an obtaining module, a processing module and an early warning module. According to the embodiment, the purification efficiency and the heat exchange efficiency of the primary air system are calculated and judged, early warning information is generated, monitoring ofthe working efficiency of an air purification filtering element of the primary air system is achieved, early warning is carried out for prompting a user to replace the air purification filtering element, and the air quality of the primary air system is guaranteed.

The invention belongs to the technical field of purification devices, and particularly relates to an intelligent public washroom disinfection, sterilization and purification system. The intelligent public washroom disinfection, sterilization and purification system comprises an air treatment system, a detection system and a control system; the air treatment system comprises an air cleaning treatment system and an air temperature and humidity control system; the detection system comprises an exhaust gas detection device, a washroom internal gas detection device, a temperature and humidity detection device and a people flow monitoring device; and the control device system comprises a controller, a cloud server, a control panel and a mobile phone APP. According to the intelligent public washroom disinfection, sterilization and purification system, the purification quality of internal gas and exhaust gas of the washroom, the air temperature and humidity and the people flow rate in the washroom can be effectively monitored; and the practical problem that the surrounding environment and the body health of people using the washroom are affected due to spreading and overflowing of germs and peculiar smells in the washroom in a service area can be effectively solved.

The disclosure provdies a method and a system for controlling engine torque reserve. Methods and systems are provided for providing torque reserve via an electrically assisted turbocharger. A portionof requested torque reserve is provided by intentionally reducing turbine speed of an electric turbocharger by operating the associated electric motor as a generator. The resulting reduction in air mass allows for the torque reserve to be provided with reduced reliance on spark and throttle based torque reserve.

The invention discloses a discharge cover for a broken plastic air drying and conveying pipe and relates to the technical field of plastic machinery. The discharge cover comprises a fan which is connected with the discharge cover through the air drying and conveying pipe and is characterized in that a material collecting bag is sleeved on a discharge hole of the discharge cover; and the material collecting bag is a plastic woven bag or a cloth bag of which two ends are open. The discharge cover is simple in structure and rational in design; and the material collecting bag is sleeved on the discharge hole of the discharge cover, and the material collecting bag can be put in a packing bag during bagging, so that a phenomenon that small plastic particles scatter in the air is avoided, the quality of air in a workshop can be prevented from being damaged, and the working environment of workers is improved.

The invention belongs to the technical field of resources and environments, and particularly discloses an intelligent air purification system for a medical place. The intelligent air purification system for medical places comprises a purification system and a control system matched with the purification system. The purification system comprises an air inlet mechanism and an air outlet mechanism, the air inlet mechanism is connected with a filtering mechanism, and the filtering mechanism is connected with a purifying mechanism matched with the air outlet mechanism. The air inlet mechanism comprises multiple air inlets formed in the ground and a ceiling of the medical place, air inlet filter screens are arranged on the air inlets, air inlet branch pipes matched with the air inlets are arranged in the air inlets, the air inlet branch pipes are connected with an air inlet main pipe, and air inlet valves are arranged on the air inlet branch pipes. The air outlet mechanism comprises multiplestrip-shaped air outlets formed in the side wall of the medical place, air outlet filter screens are arranged on the strip-shaped air outlets, and air outlet guiders matched with the air outlet filter screens are arranged on the strip-shaped air outlets.

The invention relates to the field of furniture processing, in particular to a plate sanding device for furniture production. The plate sanding device for furniture production comprises a grinding unit, the grinding unit comprises a driving part, a rotating shaft and a grinding head, the driving part is connected with the rotating shaft and used for driving the rotating shaft to rotate, the grinding head is fixed to one end, away from the driving part, of the rotating shaft, the plate sanding device further comprises a dust cover and a first dust removal pipe, the dust cover is arranged on the rotating shaft in a sleeving mode,, the rotating shaft is rotationally connected with the dust cover, the first dust removal pipe communicates with the dust cover, the grinding head comprises a sanding part and a cutting part which are fixedly connected, the sanding part is located at the bottom of the cutting part and attached to a plate, and blades are arranged at one end, away from the sanding part, of the cutting part. According to the plate sanding device for furniture production, limitation can be carried out on wood chips while sanding is carried out, so that the wood chip removing effect is improved.

The invention discloses an excrement recycling device for animal husbandry, which comprises a hen house, an excrement delivering plate, a spraying pipe, an exhaust fan and an air purifier; the upper part of the hen house is provided with the exhaust fan, the top part of the exhaust fan is equipped with an air pipe; the other side of the air pipe is provided with an air purifier, the air purifier is installed at one side of the exhaust fan; a water reservoir is installed on the inner wall at one side of the inner part of the hen house. The excrement recycling device has the beneficial effects that the excrement left on the hen house is brushed to the storage slot through a set of spraying device, the whole structure is simple and able to greatly improve the recycling efficiency and abilityof the excrement recycling device; thus the excrement utilization rate is greatly promoted, the product market competitiveness is improved; through the air purifying system, the peculiar smell in theexcrement recycling and brushing process is removed; the recycling device prevents poisonous and harmful gas from spreading in the air and reducing the air quality, and guarantees the physical and mental health of people.

The invention relates to a coal crusher, in particular to a mining coal crusher. The mining coal crusher comprises a base structure, a feeding base, two side baffles, main baffles, a linkage mechanism, coal crushing mechanisms, a dust falling mechanism and wheel mechanisms, wherein the feeding base is connected to the upper end of the base structure; the two side baffles are connected to the frontend and the rear end of the middle of the base structure respectively; the left end and the right end of the middle of the base structure are connected to the main baffles in a mirror symmetry mode respectively; the linkage mechanism is connected to the middle of the base structure; the left end and the right end of the linkage mechanism are connected to the coal crushing mechanisms in a mirror symmetry mode respectively; the dust falling mechanism is connected to the rear end of the base structure; and the two wheel mechanisms are rotationally connected to the left end and the right end of the lower end of the base structure respectively. The coal crushing mechanisms at the two ends conduct coal crushing treatment on composite coal briquettes which enter the feeding base and have coal briquettes on the outer surfaces and rocks in the inner parts through relative rotation.

The invention discloses a dry and wet coal layered treatment automatic dust falling device and a using method thereof. The dry and wet coal layered treatment automatic dust falling device comprises a conveying structure and a dust removing structure. The conveying structure comprises two conveying belts, a feeding baffle, a sealing plate, a sealing shell, a negative pressure fan and a blocking plate. The two conveying belts are arranged up and down through a support. The feeding baffle is installed at one end of the conveying belts. The sealing plate is hinged to the inner wall of the feeding baffle through a hinge. The sealing shell is fixedly arranged at the top of the conveying belts. By means of the conveying structure, efficient classified conveying of dry and wet coal can be achieved, a dust removal function is integrated in the actual conveying process, when dust removal is conducted on dry and wet coal, the problem that the air quality of the working environment is reduced due to dust flying and splashing is avoided, and meanwhile, the detonation problem caused by combustible dust is avoided. Through the combination of a grid plate and a water tank, the air flow containing dust is efficiently adsorbed, a water source is recycled, the dust removal efficiency can be improved, and meanwhile the dust removal cost is reduced.

An energy-saving and emission-reducing landing airport, including an energy storage belt, an energy storage wheel, a guide wheel, a synchronous wheel and a driven synchronous wheel, the energy storage belt envelops the second energy storage belt (M) and the first energy storage belt (N), the first section of energy storage belt (N) is to cooperate with saving the landing gear, and the landing aircraft with organic belly hook hooks the energy storage belt to start energy storage; the second section of energy storage belt (M) is the control of the energy storage belt The energy storage during the deceleration process from gliding to taxiing of the aircraft; when the aircraft lands, a belly hook protrudes from the rear half of the belly to hook the energy storage belt (D) and synchronize with the aircraft to drive the energy storage wheel (4) and the energy storage The wheel shaft (3) rotates, and winds the steel cable (F1) through the synchronous wheel and the synchronous belt (E), the driven synchronous wheel (F) and the hoist coaxial with the driven synchronous wheel (F), and passes through the guide wheel ( F2), the fixed pulley in the top floor (H) lifts the weight (W), so that the kinetic energy when the plane lands is converted into the airport energy storage potential energy for backup. The aircraft saves the flight energy consumption of the landing gear and the hydraulic system.

The invention provides a cold air machine with a purification function. The cold air machine comprises a machine body side wall and a machine body bottom face. A draught fan is arranged on the machinebottom face, and a filter net and a dust collecting cloth are sequentially arranged on the upper portion of the draught fan. The filter net and the dust collecting cloth are detachably mounted on themachine body side wall. According to the cold air machine with the purification function, pollutants in the cold air machine are removed to prevent the situation that bacterial infection occurs and thus the air quality is reduced.