40results about How to "Does not generate ozone" patented technology

The invention discloses an ultra-violet LED face light source for a PCB exposure machine. The ultra-violet LED face light source comprises a plurality of water-cooling type ultra-violet LED lamp box units, wherein each water-cooling type ultra-violet LED lamp box unit comprises M*N ultra-violet LED lamp beads arranged on an element installation face of a copper substrate and arranged into a matrix structure, all the ultra-violet LED lamp beads are in series connection, each ultra-violet LED lamp bead is covered with a reflection cup, all the reflection cups are arranged on a reflection cup installation plate, the reflection cup installation plate is connected with the element installation face of the copper substrate, a unit water tank is arranged on the water passing face, opposite to the element installation face, of the copper substrate, and a temperature controller is arranged on the unit water tank. The ultra-violet LED face light source for the PCB exposure machine is remarkable in energy-saving effect, large in exposure area, far in exposure distance and high in energy uniformity. The light source is stable and reliable, performance is far more superior than a traditional light source, is low in cost and free of pollution and radiation, and can completely replace the traditional light source.

A high-voltage negative ion generator relates to an electrical device for generating negative oxygen ions. It includes a casing, an anion generating chamber and a switching power supply, and is characterized in that: a humidity detection device and a high-voltage generator are also provided in the casing, and the humidity detection device is connected with the switching power supply and can adjust the output value of the high-voltage generator; the negative ion generation The cavity includes a fan, a discharge needle, a positive plate, a negative plate and a permanent magnet as an ion trap. The discharge needles are multiple and arranged in a triangular wave on the positive plate on the upper part of the negative ion generating chamber, and there is a negative plate below the discharge needle. The magnet is arranged on the lower ends of the left and right side walls of the negative ion generating chamber, and the fan is located on the rear side of the negative ion generating chamber. The invention adopts high working voltage and multiple discharge needles to ensure no ozone and increase the concentration of negative ions, which has a great effect on changing the living room environment and human health care.

The invention relates to the field of photocatalysis, further to an application of a fullerene derivative modified semiconductor composite material in photocatalytic degradation of formaldehyde. The fullerene derivative comprises at least one of fullerene aminated derivative, a fullerene carboxylated derivative and a fullerene hydroxylated derivate. A semiconductor body of the composite material comprises at least one of bismuth tungstate, titanium dioxide, bismuth vanadate, zinc oxide and stannic oxide. The composite material is stable in structure in a process of photocatalytic degradation of formaldehyde, can be used repeatedly, is excellent in formaldehyde degrading performance and low in cost, and is free of secondary pollution.

The invention discloses a low voltage electrostatic dust collection module and an air purification device. The low voltage electrostatic dust collection module comprises a positive electrode low voltage electrostatic dust collection unit, a negative electrode low voltage electrostatic dust collection, an electrostatic generator and a degeneration control adjuster, wherein the positive electrode low voltage electrostatic dust collection unit and the negative electrode low voltage electrostatic dust collection at least comprises a layer of electrostatic dust collection filter screen; each electrostatic dust collection filter screen comprises a conductive non-woven fabric filter screen with a microcellular structure; the electrostatic generator continuously conveys a positive charge to the conductive non-woven fabric filter screen in the positive electrode low voltage electrostatic dust collection unit, and continuously conveys a negative charge to the conductive non-woven fabric filter screen in the negative electrode low voltage electrostatic dust collection unit; the degeneration control adjuster is used for monitoring an electric charge quantity change on each conductive non-wovenfabric filter screen, and feeding back changed signals to a control system; and the control system controls a periodic intermitting supply manner of the electrostatic generator and the magnitude of output voltage according the feedback signals. The conductive non-woven fabric filter screens are utilized for loading a static charge so as to form a contact electrification mechanism, so that the generation of ozone can be completely avoided.

The invention relates to an air purifier without the requirement for replacing filter screens and a using method of the air purifier. The air purifier comprises a base; a housing comprising an air inlet and an air outlet is arranged at the upper part of the base; a control panel and a purification device are arranged inside the housing; the control panel is electrically connected with the purification device; the purification device comprises a fan capable of sucking air; a stainless nano silver ion filter screen which is used for filtering large particle chips, hair and foreign bodies and can sterilize is arranged below the fan; a nanofiber membrane filter screen capable of carrying out PM2.5 (Particulate Matter2.5) filtration is arranged below the stainless nano silver ion filter screen; a photocatalyst filter screen capable of carrying out sterilization and decomposing formaldehyde and other toxic substances is arranged below the nanofiber membrane filter screen; an anion generator capable of sterilizing, disinfecting and accelerating smoke removal is arranged below the photocatalyst filter screen. According to the air purifier, unfiltered air is sucked by the fan, and filtered fresh air is discharged by the purification device; the purification device can be repeatedly washed or does not need to be washed, and does not need to be replaced.