CN104132397A - Platinum main catalyst air purification and disinfection reactor - Google Patents
Platinum main catalyst air purification and disinfection reactor Download PDFInfo
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- CN104132397A CN104132397A CN201410382052.XA CN201410382052A CN104132397A CN 104132397 A CN104132397 A CN 104132397A CN 201410382052 A CN201410382052 A CN 201410382052A CN 104132397 A CN104132397 A CN 104132397A
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Abstract
The invention relates to a platinum main catalyst air purification and disinfection reactor which internally comprises a draught fan and further at least comprises a reaction device with an air inlet and an air outlet so that air blown out of the draught fan can pass through the reaction device. The draught fan at least comprises a motor and an impeller, wherein the motor drives the impeller to rotate. The air inlet is located in the top of the draught fan. Air enters the reaction device from the side face. Air ducts through which the reaction device is connected with the draught fan are connected with sealing and connecting pieces, and are sequentially provided with the air inlet, an ultraviolet lamp, one or more reactor modules, the draught fan and the air outlet from the air inlet side to the air outlet side. Each reactor module is composed of a module outer frame and a plurality glass sheets, wherein the glass sheets are obliquely inserted in the module outer frame in parallel, the front face and the back face of each glass sheet are respectively coated with a photocatalytic layer, gaps between the adjacent glass sheets form the through air ducts, and the module outer frame is made of ultraviolet light resistance material. The platinum main catalyst air purification and disinfection reactor has the advantages of being light in weight, maximum in ventilating area and the like.
Description
Technical field
The present invention relates to a kind of reactor of air purifying and sterilizing, particularly a kind of utilization surface applies photocatalysis layer and forms photocatalysis system, under ultraviolet energy is supplied with for the air purifying and sterilizing reactor of purifying sterilizing air.
Background technology
A kind of disclosed method that can be used for removing indoor stench, harmful substance or coating surface pollutant in China Patent No. ZL200410039612.8, by mixed light carbon monoxide-olefin polymeric, adhesive and oil-containing assistant, obtain liquid smears, smears is coated in after the film layer of plastics or glass surface formation extension, by erasing outermost adhesive and assistant, make Photocatalyst Composite expose the outermost surface at film layer.
And then a kind of platinum is disclosed in China Patent Publication No. CN101213011A as the technical scheme of decomposing the main catalyst of eliminating airborne organic compound, and using platinum (Pt) as main catalyst, there is the titanium dioxide (TiO of photocatalyst reaction
2) as auxiliary catalyst, platinum content is titanium dioxide 0.05～50%, is a kind of mixture containing platinum and titanium dioxide.The effect that utilizes platinum catalysis can effectively absorb, decompose airborne organic compound, no matter the function that all performance purifies air round the clock.
But for domestic correspondent, because coated form is too simple, even if use the coating of this excellent properties also often can not meet client's requirement, cannot make dealer's work obtain actual embodiment at present.
In addition, because this photocatalyst is after washing agent or the scouring of finish class, this layer of coating can be washed away, can only adopt clear water wiping, therefore in the simple situation that is coated in misoperation, easily lost efficacy, a kind of widely used the most efficient air purifying and sterilizing reactor and device of having of being more convenient for need to be provided, for client, use.
Have and using platinum (Pt) as main catalyst now, there is the titanium dioxide (TiO of photocatalyst reaction
2) as the air cleaning unit of assisting catalyst, their structure is that uviol lamp is parallel placement with glass, and the air outlet of blower fan is vertical with glass, and air is first to pass through blower fan, after through glass, the air that namely blower fan is produced by boasting directly blows on glass.Such Structural Energy Dissipation is large, and noise is large, can be little by the negotiable area of air of glass surface, thereby purification efficiency is also just low.
Summary of the invention
The object of the invention is: a kind of air purifying and sterilizing reactor is provided, for the main catalyst air purifying disinfecting reactor of platinum, air purifying and sterilizing reactor of the prior art is improved, install and form rationally, the reactor of the air purifying and sterilizing that purification efficiency is good, carries out purifying sterilizing processing to the air of flowing through.
To achieve the above object of the invention, technical scheme provided by the invention is: the main catalyst air purifying disinfecting reactor of a kind of platinum, inside establish blower fan, and also at least comprise the reaction unit with air inlet and air outlet, the air of being produced by boasting by blower fan is through described reaction unit; Described blower fan at least comprises motor and impeller, and described motor drives described wheel rotation, wherein:
Described air outlet is located at the top of described blower fan, air enters reaction unit from the side, the air channel that described reaction unit is connected with described blower fan adopts seal connector to connect, and from air intake, to air-out, air inlet, uviol lamp is sequentially set, is no less than reactor module, blower fan and the air outlet of one;
Described reactor module is comprised of module housing and multi-disc sheet glass, wherein, the parallel oblique cutting of multi-disc sheet glass is in reverse piece housing, the tow sides of described sheet glass are coated with photocatalysis layer, between adjacent glass sheets, space forms the air channel connecting, and described module housing is made by the material of ultraviolet light.
The present invention is convenient to change uviol lamp, by blower fan, operate at and between blower fan and reactor module, produce negative pressure and make air stream 100% between the space of inner each sheet glass of reactor module, reach the object of air cleaning, simultaneously, air after purification is discharged purifying and sterilizing device after blower fan, can reduce to greatest extent noise, on the contrary, as by common from air intake, to air-out order, be blower fan, reaction unit, the wind that blower fan is produced by boasting directly blows on the sheet glass of reactor module, can produce very large noise, ventilation is also subject to resistance and reduces.
On such scheme basis, described photocatalysis layer is the mixture coating of titanium dioxide and platinum.The air entering from air inlet fully contacts with glass sheet surface, during through photocatalysis layer, under ultraviolet effect, decomposes airborne harmful organic substance kill bacteria, reaches the function purifying air.
On such scheme basis, the thickness of described photocatalysis layer is 10～30 nanometers.
On such scheme basis, the oblique cutting angle of described sheet glass and described module housing is less than 45 °, make described sheet glass and described uviol lamp angle be less than 45 °, so oblique cutting angle and mode can guarantee that ultraviolet direct projection is to sheet glass, guarantee that uviol lamp energy offers to greatest extent photocatalysis layer and carries out the required effective energy of light-catalyzed reaction, sheet glass oblique cutting can provide the surface area of air stream through reactor module to greatest extent, reach air stream through the maximization of reactor flow, thereby reach the reaction effect of maximal efficiency.
If ultraviolet light is not direct projection but arrives glass sheet surface through reflection, its energy will lose 90% left and right so, and the ultraviolet light that namely can reflex to glass sheet surface only has 10% left and right.
On such scheme basis, the wavelength of described uviol lamp is 350～365 nanometers.
On such scheme basis, the sheet glass spacing in described reactor module between sheet glass group is 1.5～2mm, contacts to greatest extent sheet glass, and reduce windage with the air that guarantees to flow through.
On such scheme basis, described uviol lamp power is: described reactor module is not less than 120uw away from the weakest point of the ultraviolet ray intensity of uviol lamp one side.
On such scheme basis, described uviol lamp and reactor module be arranged in parallel, and the described reactor module minimum distance of described uviol lamp distance is 1.5～2cm.Specifically, described uviol lamp is located at a side of described reactor module, and the distance of uviol lamp and reactor module is controlled at about 1.5-2cm, guarantee ultraviolet luminous energy to greatest extent direct projection to the surface of all sheet glass.Quantity and the power of the uviol lamp of installing, determine away from the ultraviolet ray intensity of uviol lamp one side according to reactor module, and the most weak place is not less than 120uw.The power of civilian uviol lamp is generally 5～100W, industrial can deciding according to usable floor area and pollution sources situation.
On such scheme basis, the thickness of described sheet glass is 0.5mm～1.0mm, and the length of sheet glass is 15～20cm, and wide is 5～8cm, and sheet glass is too thin frangible, too thick increase volume and weight, and it is frangible that size is large.The parallel oblique cutting of sheet glass of the present invention is in module housing, volume can be obtained little, the module of the air space maximum of can flowing through, be installed on easily in the air purifying sterilizer of different size, can obtain to greatest extent the space that connects air between glass and glass, space is larger, can connect air capacity larger within the unit interval, the amount of air and glass contact is just larger, and purification efficiency is also just better.Industrial also can determine through measuring and calculating according to actual conditions, and the size of industrial sheet glass, thickness can suitably be adjusted amplification.
On such scheme basis, for purifying area, be 30～50m
2room, the gross area on the positive and negative surface of described sheet glass is 2.5m
2, its gross area also can increase and decrease according to requirements.
The big or small general control of reactor module for well, can be installed a plurality of reactor modules in an air cleaning reactor in 20 * 16 * 5cm～40 * 16 * 6 cm left and right, according to design requirement, determines.The size of reactor, power can increase and decrease according to demand.
For making the present invention reach better effect, can also establish a screen pack at described air inlet place, air is carried out to preliminary filtration.
The present invention has not only utilized high efficiency photocatalyst to carry out air purifying and sterilizing processing, and is made into the reactor for purifying sterilizing air that a kind of space utilization is reasonable, usefulness is high.Simultaneously, utilize blower fan to make purifier device, fan induced draught flows through air 100% between the sheet glass of reactor module inside, contact to greatest extent with glass sheet surface, glass surface is irradiated in direct projection by uviol lamp, the platinum Catalytic Layer that glass sheet surface applies and optically catalytic TiO 2 layer are to airborne harmful substance, formaldehyde for example, toluene, dimethylbenzene, ammonia, ether, the organic compounds such as dioxin, bacterial virus carries out resolution process, and within a few hours, reach the requirement of < < GB/51883-2002 IAQ standard > >.Can effectively prevent comprehensive scytitis, anaphylaxis pollinosis, has the effects such as decontamination, deodorizing, makes room air remain fresh cleaning.
Compared with prior art, beneficial effect of the present invention has at least: (1) made reactor module is lightweight, and draught area is maximum, provides to greatest extent air stream long-pending through the glass sheet surface of reactor module, reaches air stream and maximizes through reactor flow.(2) sheet glass oblique cutting can guarantee that ultraviolet direct projection is on glass, guarantees that uviol lamp energy offers the required effective energy of photocatalysis chemical reaction, good energy-conserving effect to greatest extent.(3) can obtain volume little, the module of the air maximum in space between sheet glass of can flowing through, is installed on the air purifying sterilizer of different size easily.(4) can obtain to greatest extent the space that connects air between sheet glass, space is larger, can connect air capacity larger within the unit interval, and the amount of air and glass contact is just larger, and purification efficiency is also just better.(5) the present invention improves air purification reactor in prior art, sheet glass is applied, design by reactor module and air flow channel simultaneously makes the air of flowing through carry out contacting of maximum possible with glass surface, glass sheet surface is irradiated in direct projection by uviol lamp, the photocatalysis layer maximum efficiency of glass sheet surface accelerates airborne harmful poisonous gas to decompose, absorb, to reach the object of air cleaning in holding chamber.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is reaction unit structural representation in the present invention;
Fig. 3 is sheet glass structural representation in the present invention;
Fig. 4 is test one diagram;
Fig. 5 is test two diagrams;
Fig. 6 is test three diagrams.
Attached number in the figure explanation:
1---reaction unit; 2---screen pack;
3---reactor module;
31---reactor module housing; 32---sheet glass;
4---reaction unit shell;
5---air channel seal connector;
6---uviol lamp;
7---blower fan; 71---impeller; 72---motor;
8---air inlet; 9---air outlet;
101,102---platinum photocatalysis layer.
The specific embodiment
Refer to Figure of description below, the present invention is further described.
In structural representation as of the present invention in Fig. 1, Fig. 2 the present invention in reaction unit structural representation and Fig. 3 the present invention as shown in sheet glass structural representation, the main catalyst air purifying disinfecting reactor of a kind of platinum, inside establish blower fan 7, also at least comprise the reaction unit 1 with air inlet 8 and air outlet 9, make the air of being produced by boasting by blower fan 7 through described reaction unit 1; Described blower fan 7 at least comprises motor 72 and impeller 71, described motor 72 drives described impeller 71 to rotate, described air outlet 9 is located at the top of described blower fan 7, air enters reaction unit from the side, the air channel that described reaction unit 1 is connected with described blower fan 7 adopts seal connector 5 to connect, and from air intake, to air-out, air inlet 8, uviol lamp 6 is sequentially set, is no less than reactor module 3, blower fan 7 and the air outlet 9 of one; Described reactor module 3 is comprised of module housing 31 and multi-disc sheet glass 32, wherein, the parallel oblique cutting of multi-disc sheet glass 32 is in reverse piece housing 31, the tow sides of described sheet glass 32 are coated with photocatalysis layer 101,102, between adjacent glass sheets 32, space forms the air channel connecting, and described module housing 31 is made by the material of ultraviolet light.
For convenience of the integral installation of reaction unit 1, can also be at outer setting one shell 4 of reaction unit.
On such scheme basis, described photocatalysis layer 101,102 is the mixture coating of titanium dioxide and platinum.The thickness of described photocatalysis layer 101,102 is 10～30 nanometers.
Described sheet glass 32 is less than 45 ° with the oblique cutting angle of described module housing 31, makes described sheet glass and described uviol lamp angle be less than 45 °, and as the A angle in Fig. 1 is less than 45 °, described sheet glass 32 is less than 45 ° with described ultraviolet 6 lamp angles.
As shown in Figure 2, compared with Fig. 1 different be the oblique cutting direction of the parallel oblique cutting of sheet glass 32 in described module housing 31, described in it, sheet glass 32 is still less than 45 ° with 31 jiaos of angles of described module housing (as the B angle in Fig. 2).
The wavelength of described uviol lamp 6 is 350～365 nanometers.Described uviol lamp 6 power are: described reactor module is not less than 120uw away from the weakest point of the ultraviolet ray intensity of uviol lamp one side.
On such scheme basis, the sheet glass spacing between the interior sheet glass group of described reactor module 3 is 1.5～2mm.
Described uviol lamp 6 be arranged in parallel with reactor module 3, and described reactor module 3 minimum distances of described uviol lamp 6 distance are 1.5～2cm.
The thickness of described sheet glass 32 is 0.5mm～1.0mm, and the length of sheet glass is 15～20cm, and wide is 5～8cm.
Air purifying and sterilizing reactor can arrange the reactor module of different glass surface area size according to the difference of room area, generally, for purifying area, be 30～50 m
2room, the gross area on the positive and negative surface of described sheet glass is 2.5m
2.
For making the present invention reach better effect, at described air inlet, 8 places establish a screen pack 2, and air is carried out to preliminary filtration.
Using method of the present invention is very simple, by motor 72, drive wheel rotor 71, the air sucking by air inlet 8, after tentatively filtering by 2 pairs of air of screen pack, under the irradiation of uviol lamp 6, fully contact with the photocatalysis layer 101,102 on sheet glass 32 surfaces, platinum and titanium dioxide acting in conjunction are carried out photocatalysis Decomposition to airborne harmful substance, by air outlet 9, discharge.
Some design parameters in the present invention can be compared by following experiment:
Experiment one: as shown in Figure 4, by sheet glass placement parallel with uviol lamp, sheet glass is stacked into different thickness, ultraviolet light illumination instrument is placed on to the centerline of the glass vertical with uviol lamp, then slowly on limit, move, in its different position, survey ultraviolet light and see through the intensity after glass:
1. when glass stack thickness is 3mm, we record position, No. 1, true centric line place is that 880 uw are 330 uw apart from position, No. 2, center line vertical range 6cm place, apart from position, No. 3, center line vertical range 8cm place, are 138 uw, apart from position, No. 4, center line vertical range 8.5cm place, is 107 uw.
2. when glass stack thickness is 4mm, we record position, No. 1, true centric line place is 590 uw, is 220 uw, apart from position, No. 3, center line vertical range 8cm place, is 120 uw apart from No. 2 positions of center line vertical range 6cm.
3. when glass stack thickness is 5mm, we record position, No. 1, true centric line place is 360 uw, apart from position, No. 2, center line vertical range 6cm place, be 190 uw, apart from position, No. 3, center line vertical range 7cm place, be 120uw, apart from position, No. 4,8 cm place of center line vertical range, be 105 uw.
4. when glass stacks thickness and is 6cm, we record position, No. 1, true centric line place is 342uw, apart from position, No. 2, center line vertical range 6cm place, be 160 uw, apart from position, No. 3, center line vertical range 6.5cm place, be 120 uw.
5. when glass stacks thickness and is 7cm, we record position, No. 1, true centric line place is 190uw, apart from position, No. 2, center line vertical range 6cm place, be 120 uw, apart from position, No. 3, center line vertical range 8cm place, be 75 uw.
6. when glass stacks thickness and is 8cm, we record position, No. 1, true centric line place is 107uw, apart from position, No. 2, center line vertical range 6cm place, be 85uw, apart from position, No. 3, center line vertical range 8cm place, be 65 uw.
Thereby maximum ventilation sectional area is 36X3X2=216 square centimeter while being 3cm by calculating glass stack thickness, maximum ventilation glass surface area is (60/2.7) X16X36X2=25599 square centimeter.
When glass stack thickness is 4cm, maximum ventilation sectional area is 36X4X2=288 square centimeter, and maximum ventilation glass surface area is (80/2.7) X16X36X2=34133 square centimeter.
When glass stack thickness is 5cm, maximum gout sectional area is 36X5X2=360 square centimeter, and maximum ventilation glass surface area is (100/2.7) X14X36X2=37333 square centimeter.
When glass stack thickness is 6cm, maximum ventilation sectional area is 36X6X2=432 square centimeter, and maximum ventilation glass surface area is (120/2.7) X13X36X2=41599 square centimeter.
When glass stack thickness is 7cm, maximum ventilation sectional area is 36X14=504 square centimeter, and maximum ventilation glass surface area is (140/2.7) X12X36X2=44799 square centimeter.
Glass stack thickness records position, No. 1, true centric line place while being 8cm and is 107uw, is less than 120 uw, so maximum ventilation area is 36X16X0=0 square centimeter.
So show that from result of calculation thickness of glass is that 7cm is best, ventilation-sectional area contacts glass surface area with wind is maximum.
Experiment two: as shown in Figure 5, same with experiment one, by the uviol lamp value of then surveying its diverse location vertical with glass, glass stack thickness is 360cm, and recording position, No. 1, place of true centric linear distance fluorescent tube 2cm is that 120 uw, position, No. 2, place of true centric line-spacing fluorescent tube vertical range 4cm are 120uw, apart from vertical center line 4cm, are 120uw, apart from position, vertical No. 4, place of center line 4cm, are 220 uw apart from position, No. 3, cross central line 3cm place.
Maximum ventilation sectional area is 36X8=288 square centimeter, and maximum ventilation glass surface area is (360/2.7) X8X6X2=12799 square centimeter.
Experiment three: as shown in Figure 6, set sheet glass parallel equidistant from tiltedly putting, make sheet glass and uviol lamp (C angle) angle at 45 ° (45° angle left and right), the thickness that glass stacks is 5cm, the size length of glass is 16cm, wide is 6.4cm, glass can be wider again, ultraviolet light illumination instrument is placed on to the centerline of the glass vertical with uviol lamp, then slowly on limit, move, in its different position, survey ultraviolet light and see through the intensity after glass, in the time of 45 °, we record position, No. 1, true centric line place is 585uw, apart from position, No. 2, center line 6cm place, be 220 uw, apart from position, No. 3, center line 8cm place, be 118, in the time of 60 °, we record No. 1 position is 580 uw, No. 2 positions are 215 uw, No. 3 positions are 115 uw, in the time of 15 °, we record No. 1 position is 590 uw, No. 2 positions are 220uw, No. 3 positions are 120 uw.Can show that the angle that glass is tiltedly put is less than 45 °.
Maximum ventilation sectional area is 32X16=512 square centimeter, and maximum ventilation glass surface area is (320/2.7) X16X12.8X2=49303.
According to the principle of not low what 120 uw of photocatalysis optimum efficiency ultraviolet light, known experiment three uviol lamps and glass are tiltedly put, and it is best that angle is less than 45 °, and ventilation-sectional area contacts glass surface area with wind is maximum, test two slightly almost, but glass is more fragile.
Through experimental verification: setting thickness of glass is 0.7mm, and the spacing of glass is 2mm.The power of uviol lamp is 15W, the effective length of uviol lamp is 36cm, glass is gathered into folds, when ultraviolet lamp is placed near glass placement parallel with glass respectively, vertical placement, 45° angle, ultraviolet light is respectively how many uw at diverse location light intensity after seeing through the glass gathering into folds, can predict glass thicklyer folded, after seeing through glass, light intensity is lower, local light intensity from ultraviolet lamp tube away from is more lower, and photocatalyst of titanium dioxide reaction needed ultraviolet light intensity is more preferably greater than 120uw here.
So experiment three uviol lamps and glass are tiltedly put the reactor module of making, can to reach ventilation-sectional area contacts glass surface area with wind be all maximum, is the most rational.The reactor made from such reactor module and purification utensil efficiency are best, and institute's energy requirement is minimum, Here it is important including of the present invention.
Claims (10)
1. the main catalyst air purifying disinfecting reactor of platinum, inside establishes blower fan, also at least comprises the reaction unit with air inlet and air outlet, makes the air of being produced by boasting by blower fan through described reaction unit; Described blower fan at least comprises motor and impeller, and described motor drives described wheel rotation, it is characterized in that:
Described air outlet is located at the top of described blower fan, air enters reaction unit from the side, the air channel that described reaction unit is connected with described blower fan adopts seal connector to connect, and from air intake, to air-out, air inlet, uviol lamp is sequentially set, is no less than reactor module, blower fan and the air outlet of one;
Described reactor module is comprised of module housing and multi-disc sheet glass, wherein, the parallel oblique cutting of multi-disc sheet glass is in reverse piece housing, the tow sides of described sheet glass are coated with photocatalysis layer, between adjacent glass sheets, space forms the air channel connecting, and described module housing is made by the material of ultraviolet light.
2. the main catalyst air purifying disinfecting reactor of platinum according to claim 1, is characterized in that: described photocatalysis layer is the mixture coating of titanium dioxide and platinum.
3. the main catalyst air purifying disinfecting reactor of platinum according to claim 1 and 2, is characterized in that: the thickness of described photocatalysis layer is 10～30 nanometers.
4. the main catalyst air purifying disinfecting reactor of platinum according to claim 1, is characterized in that: the oblique cutting angle of described sheet glass and described module housing is less than 45 °, makes described sheet glass and described uviol lamp angle be less than 45 °.
5. according to the main catalyst air purifying disinfecting reactor of the platinum described in claim 1 or 4, it is characterized in that: the wavelength of described uviol lamp is 350～365 nanometers.
6. according to the main catalyst air purifying disinfecting reactor of the platinum described in claim 1 or 4, it is characterized in that: the sheet glass spacing in described reactor module between sheet glass group is 1.5～2mm.
7. the main catalyst air purifying disinfecting reactor of platinum according to claim 1, is characterized in that: described uviol lamp power is: described reactor module is not less than 120uw away from the weakest point of the ultraviolet ray intensity of uviol lamp one side.
8. the main catalyst air purifying disinfecting reactor of platinum according to claim 1, is characterized in that: described uviol lamp and reactor module be arranged in parallel, and the described reactor module minimum distance of described uviol lamp distance is 1.5～2cm.
9. the main catalyst air purifying disinfecting reactor of platinum according to claim 1 and 2, is characterized in that: the thickness of described sheet glass is 0.5mm～1.0mm, and the length of sheet glass is 15～20cm, and wide is 5～8cm.
10. the main catalyst air purifying disinfecting reactor of platinum according to claim 1, is characterized in that: for purifying area, be 30～50m
2room, the gross area on the positive and negative surface of described sheet glass is 2.5m
2.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI623254B (en) * | 2016-03-31 | 2018-05-01 | 揚昇照明股份有限公司 | Electronic device |
| CN114367255A (en) * | 2021-12-09 | 2022-04-19 | 延安大学 | Photocatalytic CO2Reduction reactor |
-
2014
- 2014-08-06 CN CN201410382052.XA patent/CN104132397A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI623254B (en) * | 2016-03-31 | 2018-05-01 | 揚昇照明股份有限公司 | Electronic device |
| US10219417B2 (en) | 2016-03-31 | 2019-02-26 | Coretronic Corporation | Electronic device having blocking element |
| CN114367255A (en) * | 2021-12-09 | 2022-04-19 | 延安大学 | Photocatalytic CO2Reduction reactor |
| CN114367255B (en) * | 2021-12-09 | 2024-04-19 | 延安大学 | Photocatalytic CO2Reduction reactor |
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