Purifying formaldehyde device
Technical field
The utility model relates to a kind of air cleaning unit, particularly relates to a kind of purifying formaldehyde device.
Background technology
Air purifier refers to the pollutant that can adsorb, decompose or transform in various air, effectively improves the product of indoor air clean degree.At home, medical treatment, industrial circle all have application, the field main product that is market with the Household Air Purifier of unit class at home.Topmost function removes the particle in air, comprises anaphylactogen, indoor PM2.5 etc., can also solve volatile organic matter air pollution problems inherent in the indoor because finishing or other reasons cause, the underground space, car simultaneously.Because the release of the space Air Contamination thing of relative closure has persistence and probabilistic feature, therefore using air purifier to purify the air of a room is one of internationally recognized method improving IAQ.
Remove technology according to air purifier for particulate in air, mainly contain mechanical filter net type, electrostatic electret filter net type, high-voltage electrostatic dust-collecting, anion and plasma method etc.
Mechanical filter generally catches particulate mainly through following 4 kinds of modes: directly tackle, inertial collision, Blang's diffusion mechanism, screening effect, to fine particle thing collecting effect, good but windage is large for it, and in order to obtain high purification efficiency, the resistance of filter screen is larger, and filter screen needs densification to cause service life reduction, need periodic replacement.
High-voltage electrostatic dust-collecting utilizes high-voltage electrostatic field to make gas ionization thus makes dust particles be adsorbed onto collecting method on electrode, though its windage little to larger particles and fiber trapping weak effect, can electric discharge be caused, and cleaning trouble time-consuming, easy generation ozone, forms secondary pollution.
The operation principle that anion and plasma method remove indoor particle pollutant is similar, all by making the particle in air charged, coalescent formation larger particles and sedimentation, but in fact particle does not remove, just be attached on neighbouring surface, easily cause airborne dust again.
Electrostatic electret capacitance filter screen, relative mechanical formula is filtered and only effectively can be removed the particle of more than 10 microns, and when the particle diameter of particle removes to 5 microns, during the scope of 2 microns of even sub-micron, efficient mechanical filtration system will become costly, and windage can significantly increase.Filtered by electrostatic electret air filting material, very high capture rate can be reached with lower energy resource consumption, have the advantage of the low windage of electrostatic precipitation simultaneously concurrently, but without the need to the voltage of external volt up to ten thousand, therefore can not ozone be produced, and consist of polypropylene material due to it, easily abandon process.
It should be noted that the clarifier of most brand all can exaggerate its effect in sale publicity, some clarifier is declared can " effectively catch " tens kinds of particles.In the face of the function of miscellaneous market brand and complexity, consumer has kind of a sensation of looking at flowers in a fog.For this reason, expert reminds consumer when screening product function, the time candidate board guaranteed product that can selecting, or selects according to the sales volume of product.In country's " air purifier " relevant criterion, air purifier is defined as and " from air, is separated and removes the equipment of one or more pollutants.Pollutant in air is had to the device of certain removal ability.Mainly refer in room use monomer-type air purifier and centralized air ventilation system in modular air clarifier.
Purifying formaldehyde device belongs to the one in air purifier, and the efficiency that the purifying formaldehyde device of prior art much all also exists purifying formaldehyde is not enough, the degree of purification of PARA FORMALDEHYDE PRILLS(91,95) can not carry out the problem that detects while purification.
Utility model content
The purpose of this utility model provides a kind of purifying formaldehyde device.
The utility model is achieved through the following technical solutions:
A kind of purifying formaldehyde device, comprise mixing barretter, photocatalysis air cleaning device, containing formaldehyde air inlet device, normal air inlet duct, checkout gear and exhaust apparatus, the air inlet of described mixing barretter is connected containing the gas outlet of formaldehyde air inlet device and the gas outlet of described normal air inlet duct with described respectively, the gas outlet of described mixing barretter is connected with the air inlet of described photocatalysis air cleaning device, the gas outlet of described photocatalysis air cleaning device is connected with described exhaust apparatus, described photocatalysis air cleaning device comprises the reaction member of multiple parallel join, described reaction member comprises metal foam pipe network, a uviol lamp is provided with in the middle of described metal foam pipe network, photocatalyst is coated with inside described metal foam pipe network.
Particularly, described checkout gear comprises air status parameter measurement mechanism, air speed measuring devices and concentration of formaldehyde checkout gear, the test side of described air status parameter measurement mechanism is all connected with described mixing barretter with the test side of described air speed measuring devices, and described concentration of formaldehyde checkout gear is connected with the air outlet of described exhaust apparatus.
Particularly, described normal air inlet duct comprises air inlet pipe and air screen, and described air screen is arranged on described air inlet pipe and the described junction mixing barretter.
Further, described air inlet pipe is provided with multiple ventilative hole.
Particularly, described formaldehyde air inlet device comprises flow switch and constant temperature water bath apparatus, and formaldehyde air is successively by described constant temperature water bath apparatus and described flow switch.
Further, described metal foam pipe network length is 440mm, and diameter is 98mm.
Further, described uviol lamp power is 15W, and the dominant wavelength of described uviol lamp is 254nm.
The beneficial effects of the utility model are:
The utility model is a kind of purifying formaldehyde device, have employed photocatalysis air cleaning device, photocatalysis air cleaning device comprises the reaction member of multiple parallel join, reaction member comprises metal foam pipe network, a uviol lamp is provided with in the middle of metal foam pipe network, photocatalyst is coated with inside metal foam pipe network, uviol lamp can the activity of exciting light catalyst of maximum efficiency, purify air, the efficiency solving purifying formaldehyde in the purifying formaldehyde device of prior art is not enough, and the degree of purification of PARA FORMALDEHYDE PRILLS(91,95) can not carry out the problem that detects while purification.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model purifying formaldehyde device.
In figure: 1-air status parameter measurement mechanism, 2-air speed measuring devices, 3-air inlet pipe, 4-flow switch, 5-constant temperature water bath apparatus, 6-current equalizer, 7-metal foam pipe network, 8-photocatalysis air cleaning device, 9-exhaust apparatus, 10-concentration of formaldehyde checkout gear.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail:
As shown in Figure 1, the utility model is a kind of purifying formaldehyde device, comprise mixing barretter, photocatalysis air cleaning device 8, containing formaldehyde air inlet device, normal air inlet duct, checkout gear and exhaust apparatus 9, the air inlet of mixing barretter is connected respectively with containing the gas outlet of formaldehyde air inlet device and the gas outlet of normal air inlet duct, the gas outlet of mixing barretter is connected with the air inlet of photocatalysis air cleaning device 8, the gas outlet of photocatalysis air cleaning device 8 is connected with exhaust apparatus 9, photocatalysis air cleaning device 8 comprises the reaction member of multiple parallel join, reaction member comprises metal foam pipe network 7, a uviol lamp is provided with in the middle of metal foam pipe network 7, photocatalyst is coated with inside metal foam pipe network 7, wherein metal foam pipe network 7 length is 440mm, diameter is 98mm, uviol lamp power is 15W, the dominant wavelength of uviol lamp is 254nm.Checkout gear comprises air status parameter measurement mechanism 1, air speed measuring devices 2 and concentration of formaldehyde checkout gear 10, the test side of air status parameter measurement mechanism 1 and the test side of air speed measuring devices 2 are all connected with mixing barretter, and concentration of formaldehyde checkout gear 10 is connected with the air outlet of exhaust apparatus 9.Normal air inlet duct comprises air inlet pipe 3 and air screen, and air screen is arranged on air inlet pipe 3 and the junction mixing barretter, air inlet pipe 3 is provided with multiple ventilative hole.Formaldehyde air inlet device comprises flow switch 4 and constant temperature water bath apparatus 5, and formaldehyde air is successively by constant temperature water bath apparatus 5 and flow switch 4.Current equalizer 6 is also provided with in the junction of mixing barretter and photocatalysis air cleaning device 8.
Operation principle:
Enter in mixing barretter containing formaldehyde air through constant temperature water bath apparatus 5 and flow switch 4, wherein flow switch 4 is to entering controlling containing formaldehyde air mass flow size in mixing barretter, concentration containing the formaldehyde inside formaldehyde air is controlled by the temperature of regulating thermostatic water bath device 5, normal air enters in mixing barretter after air inlet pipe 3 and air screen simultaneously, normal air with containing formaldehyde air mix after by entering into photocatalysis air cleaning device 8 after current equalizer 6, in photocatalysis air cleaning device 8, uviol lamp irradiates the photocatalyst inside metal foam pipe network 7, the activity of the exciting light catalyst of maximum efficiency, the oxygen of active material adsorption and moisture, produce and there is the extremely strong free hydroxy of oxidability and active oxygen, produce oxidation reaction, make organic matter, bacterium, virus etc. is thoroughly decomposed into carbon dioxide and water, discharge finally by exhaust apparatus 9.Period, air status parameter measurement mechanism and air speed measuring devices are monitored the air status parameter in mixing barretter and air velocity, and concentration of formaldehyde checkout gear 10 carries out the detection of concentration of formaldehyde to the gas of discharging exhaust apparatus 9.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., be all included within protection scope of the present invention.