CN100333801C - Air purifier and its control method - Google Patents
Air purifier and its control method Download PDFInfo
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- CN100333801C CN100333801C CNB03144007XA CN03144007A CN100333801C CN 100333801 C CN100333801 C CN 100333801C CN B03144007X A CNB03144007X A CN B03144007XA CN 03144007 A CN03144007 A CN 03144007A CN 100333801 C CN100333801 C CN 100333801C
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Abstract
The present invention discloses an air purifier and a control method thereof. The air purifier comprises a photocatalyst reduction device and an anion dust collecting device, wherein the photocatalyst reduction device and the anion dust collecting device are arranged orderly in an airflow channel in an airflow direction. Thus, when the present invention operates, airflow passes through the photocatalyst reduction device firstly, and then the anion dust collecting device collects dust; in this way, ionized airflow with dust can not be adsorbed on a photocatalyst net, and the photocatalyst net does not need to be cleaned often. The present invention does not waste materials and saves cost. The control method ensures that the present invention has various work patterns.
Description
Technical field
The present invention relates to a kind of air cleaner, promptly a kind ofly be used for refrigerator, refrigerator-freezer, air-conditioning etc. or directly be placed in air cleaner and control method thereof in the room, automobile.
Background technology
Along with the raising of people's living standard, people are also more and more higher to the requirement of indoor environment and air.And growth in the living standard makes electrical equipment such as refrigerator, air-conditioning become the necessary article of average family.Yet the refrigerator of life-time service can produce abnormal flavour, and airtight air-conditioned room also easily produces abnormal flavour, breed bacteria, thereby pollutes room air, reduces people's quality of the life.Therefore just there is a large amount of air cleaners to arise at the historic moment on the market.
In the prior art, air cleaner adopts ion dust collect plant and photocatalyst reduction apparatus to reach the purpose of control of dust and deodorizing sterilizing more.Its typical structure such as Chinese patent application numbers 98810034.7 and 98810187.4, its concrete structure as shown in Figure 1, 2, its in main body 1, be equipped with successively dust collect plant 5 ', photocatalytic reaction device 8 ' and fan 12 '; Dust collect plant 5 ' comprise Jiong shape pole plate 24 ' and the discharge silk 23 that sets within it ', along air-flow K direction, be disposed with tabular electro static filtering net 40 ', tabular photocatalyst portion 41 ', cellular photocatalytic reaction device 8 ' and ultraviolet source 13 ', the filter 6 of and tabular electro static filtering net 40 ' and tabular photocatalyst portion 41 ' constitute roll-type '.This technology is when work, discharge silk 23 ' to pole plate 24 ' discharge, discharging ion makes airborne dust charged, the sub-fraction charged particle by Jiong shape pole plate 24 ' sidewall catch, thereby carry out control of dust, most of charged particle then pass pole plate 24 ' on through hole 28 ' and by tabular electro static filtering net 40 ' catch, and reach the purpose of further control of dust; And on the other hand, ultraviolet source 13 ' a part of direct irradiation photocatalytic reaction device 8 ' cellular inwall on, another part then run through photocatalytic reaction device 8 ' and be radiated at tabular photocatalyst portion 41 ' on, thereby air is carried out deodorization and sterilization.Yet, though but but there are following shortcoming in the air purifier of this structure not only control of dust but also deodorization and sterilization:
1, during this device busy, air-flow passes through photocatalytic reaction device again through dust collect plant earlier, therefore, air-flow is just charged when arriving photocatalytic reaction device, and charged air-flow easily adsorbs dust, it is just very dirty soon that photocatalyst portion is used, and needs often to clean, and then easily makes photocatalyst come off and lose efficacy.
2, because photocatalytic reaction device 8 ' be alveolate texture, when light ultraviolet source 13 ' irradiation, shown in dotted arrow symbol among Fig. 2, ambient light can only shine a side inwall of honeycomb hole, and can't shine a side backlight, has lighting dead angle; Intermediate rays then run through this photocatalytic reaction device 8 ' honeycomb structure, it not only can not make full use of luminous energy, the ultraviolet light that appears is the eyes of easy damaged user also, therefore must be provided with again tabular photocatalyst portion 41 ', just can avoid above-mentioned shortcoming, but this will make its complex structure, and increase cost.
3, tabular photocatalyst portion 41 ' with the filter 6 of tabular electro static filtering net 40 ' formation roll-type ', this filter 6 ' can not clean, but day cut exhausted drainage screen is long afterwards extracted new drainage screen again out, therefore will produce consumptive material, the increase use cost.
4, the anion of dust collect plant generation can't arrive air outlet, as desires to produce in air anion, then needs add anion generator again at air outlet, therefore increases cost virtually.
5, control model is single, and general photocatalyst and dust collect plant are all worked simultaneously, and can't select different working modes according to airborne smoke content, therefore operate dumb.
Summary of the invention
The object of the present invention is to provide a kind of air cleaner, it can not produce consumptive material, and cleans easily, can reach control of dust, deodorization, sterilization again simultaneously and the multipurpose of generation anion during no flue dust in air.
Another purpose of the present invention is to provide a kind of control method of air cleaner, and this method can reach the purpose with multi-job pattern.
For achieving the above object, technical solution of the present invention is:
A kind of air cleaner, comprise photocatalyst reduction apparatus and anion dust collect plant, this device is in gas channel, set gradually photocatalyst reduction apparatus and anion dust collect plant along airflow direction, this anion dust collect plant comprises the positive polar body of a hollow tube-shape at least, the axis of this positive polar body is provided with the fixed discharge tip of an end, and positive polar body links to each other with the high-tension circuit plate respectively with discharge tip; Also be provided with in this device and can control, so that its control device that carries out control of dust or emit anion the anion dust collect plant.
This control device is: high tension loop separates with low tension loop, is connected with on and off switch in the low tension loop, i.e. low pressure input on and off switch, and high tension loop connects tubular polar body and high pressure output switch, i.e. cylinder switch.
Be provided with the flue dust induction apparatus in this control device.
Connect the electromagnetic valve that a time-delay control cylinder switch opens and closes in this high tension loop.
A kind of method of using above-mentioned air cleaner to carry out air cleaning, this method comprises the steps:
1) with the keying of setting means control cylinder switch;
2) when the cylinder switch closure, when connecting low pressure input on and off switch, the anion dust collect plant carries out work, carries out control of dust and photocatalyst deodorizing sterilizing simultaneously;
3) the cylinder switch disconnects, and when connecting low pressure input on and off switch, emits anion and carries out the photocatalyst deodorizing sterilizing;
4) when low pressure input on and off switch disconnected, the anion dust collect plant was not worked, and only carries out the photocatalyst deodorizing sterilizing.
A kind of method of using above-mentioned air cleaner to carry out air cleaning, this method comprises the steps:
1) disconnects low pressure input on and off switch with setting means control, prolong 10s-30s electromagnetic valve energising afterwards adhesive; The contact of cylinder switch is connected, and connects low pressure input on and off switch, begins to carry out electrostatic precipitation; Photocatalyst reduction apparatus this moment is operate as normal also.
2) disconnect low pressure input on and off switch with setting means control, prolong 10s-30s equally and control afterwards the electromagnetic valve outage, the contact of cylinder switch disconnects, and connects low pressure input on and off switch at last, begins to emit anion.
The setting means that control cylinder switch or low pressure input on and off switch opens and closes in the described method has manual control and control automatically.This is controlled to be timing automatically and controls automatically.
Automatically be provided with the flue dust induction apparatus in the control in the described method, this flue dust induction apparatus can be responded to airborne smoke content, controls the keying of each switch with this.
After adopting such scheme, because the present invention is when running, air-flow carries out control of dust again through the photocatalyst reduction apparatus earlier, therefore the subsidiary dust of ionized air-flow can not occur and be attracted to the online situation generation of photocatalyst, so do not need often to clean the photocatalyst net, can not produce consumptive material yet, save cost.In addition, the present invention also has following enhancement effect:
1, if using spongiform photocatalyst net is lighttight material, ultraviolet light can't be appeared and the eyes of harm people, and its coating or to contain the surface area of photocatalyst big, can fully contact with air, bactericidal effect is good, can make full use of light source.
2, ultraviolet source is the ultraviolet LED lamp, and it has single direction (be to the maximum 180 degree), luminous energy be absorbed fully and the life-span very long.
3, the anion dust collect plant is arranged on the downstream of airflow direction, and the anion that is produced can directly be drained in the air, does not need to add in addition anion generator.
4, the anion dust collect plant adopts cylindric positive polar body and the fixed discharge tip form of an end, positive polar body can take out and clean from the open end of discharge tip very easily, therefore cleaning is very easy to, and just polar body is being that rustless steel is made, and often cleans and also can not produce consumptive material.
5, adopt control method of the present invention after, make this air cleaner can have following mode of operation: 1. photocatalyst deodorizing sterilizing+anion control of dust; 2. photocatalyst deodorizing sterilizing+emit anion (not carrying out the anion control of dust); 3. only carry out the photocatalyst deodorizing sterilizing.
Description of drawings
Fig. 1 is the decomposing schematic representation of known air purifier;
Fig. 2 is the cutaway view of Fig. 1 major part;
Fig. 3 is a structural representation of the present invention;
Fig. 4 is another embodiment sketch map of dust collect plant of the present invention;
Fig. 5 is the another embodiment sketch map of dust collect plant of the present invention;
Fig. 6 is the three-dimensional exploded view that the present invention specifically is applied to the desktop air purifier;
Fig. 7 is the three-dimensional combination appearance figure of Fig. 6;
Fig. 8 A is electrical block diagram of the present invention (a use alternating current);
Circuit diagram when Fig. 8 B is the present invention with battery or automobile storage battery operation;
Fig. 9 A is the sketch map of high pressure of the present invention and low tension loop;
Fig. 9 B is a solenoid control sketch map of the present invention;
Figure 10 is the flow chart of timing automatic control mode A of the present invention;
Figure 11 is the flow chart of timing automatic control mode B of the present invention;
Figure 12 is the flow chart of the present invention when controlling automatically;
Figure 13 is the flow chart under " AUTO " state among Figure 12;
Figure 14 is the flow chart of Figure 12 when entering time status.
Specific embodiment
As shown in Figure 3, the present invention sets gradually coarse filtration net 1, photocatalyst reduction apparatus 2, fan 3 and anion dust collect plant 4 along air-flow K direction in gas channel, wherein:
But coarse filtration net 1 filtering larger particles, dust and hair.
Photocatalyst reduction apparatus 2 comprises ultraviolet source 21 and photocatalyst net 22, and this ultraviolet source 21 is the ultraviolet LED lamp, and if photocatalyst net 22 spongy, then also can increase filter effect for applying or contain the material of photocatalyst.
Anion dust collect plant 4 comprises that positive polar body 41, an end of hollow tube-shape fix the discharge tip 42 and the high-tension circuit plate 43 of (can be fixed on the fan 3), and positive polar body 41 is positioned on the same axis with discharge tip 42, and links to each other with high-tension circuit plate 43 respectively; In addition, be to strengthen dust collecting effect, can be provided with at the outlet air end of positive polar body 41 one with positive polar body 41 idiostatic static nets 44.
The present invention is when work, air tentatively filters through coarse filtration net 1 earlier under the drive of fan 3, carries out deodorizing sterilizing through photocatalyst reduction apparatus 2 again, carry out control of dust through anion dust collect plant 4 at last, thereby reach the double effects of control of dust and deodorizing sterilizing.
And since the present invention in when running, air-flow carries out control of dust again through photocatalyst reduction apparatus 2 earlier, the subsidiary dust of ionized air-flow therefore can not occur to be attracted to the online situation of photocatalyst and to take place, so do not need often to clean the photocatalyst net, also can not produce consumptive material.In addition, photocatalyst net 22 is lighttight spongy material, therefore ultraviolet light is appeared and the eyes of harm people, and its surface area is big, can fully contact with air, does not also have lighting dead angle, can make full use of light source.In addition, anion dust collect plant 4 of the present invention is arranged on the downstream of airflow direction, and the anion that is produced part is caught by positive polar body 41, and part then flow in the air, makes to produce anion in the air with fresh air.
Described anion dust collect plant 4 is not limited to above-mentioned form, and other is any to have the device of dust collecting effect all within protection scope of the present invention.And described anion dust collect plant 4 only is that an end is fixed owing to discharge tip 42, and positive polar body 41 can take off from the open end of discharge tip 42 very easily and clean, and therefore cleans to be very easy to.In addition, the position of the discharge tip 42 of this structure on positive polar body 41 axis also will influence dust collecting effect.
As shown in Figure 4, the top of the discharge tip 42 of this embodiment is separated by one apart from d with the cylindrical shell root edge of positive polar body 41, though the dust catching efficiency of this structure is general, but because discharge tip 42 has a segment distance from positive polar body 41, therefore under the drive of anion stream, will produce natural wind, thereby not needing external force is that fan just can make air circulation flow, and reaches control of dust and emit the dual function of anion; And, therefore can reach silent effect fully owing to machine powers such as not having fan exists.The air purifier of this form is highly suitable in the little space and uses.
Again as shown in Figure 3, this structure discharge tip 42 is inserted positive polar body 41 inside, and this structure can form ion flow equally, and then produces natural wind, but its wind-force is significantly less than an embodiment, and little flow velocity can increase dust collecting effect.For increasing cyclic force, this embodiment is used fan 3, so just both can reach better dust collecting effect, and room air is fully circulated.
Again as shown in Figure 5, the discharge tip 42 of this embodiment is in positive polar body 41, and stretch out from positive polar body 41 other ends, this structure can not form ion flow, thereby can not produce natural wind, when blowing in hollow cylinder from an end of positive polar body 41, the other end of positive polar body 41 will form the power of resorption, so the dust collecting effect of this structure is best; But this structure can not make air circulation flow under no external force effect, so this embodiment must add fan 4 in gas channel, thereby air is flowed and carries out control of dust.
And air cleaner of the present invention can be used in refrigerator, refrigerator-freezer or the air-conditioning etc., or directly puts in room or automobile, shown in Fig. 6,7, specifically is applied to the sketch map of desktop air purifier for the present invention.Its concrete structure is:
Photocatalyst reduction apparatus 2 and anion dust collect plant 4 are arranged in the shell 5, fan 3 is fixedly arranged in the body 53 of shell 5, one side of fan 3 is fixed with the ultraviolet LED lamp as ultraviolet source 21,22 on photocatalyst net is arranged in the holder 52, these holder 52 1 ends and body 53 are affixed, and the other end is covered with by an outer housing 51 with through hole; Discharge tip 42 is fixed in body 53 side in addition, and the outlet air end of positive polar body 41 then is arranged with the outer housing 55 of band through hole, in the holder 54 of this positive polar body 41 together with outer housing fixed body 53 other sides; High-tension circuit plate 43 then is arranged in the insulation chamber 56 of body 53 bottoms.
During use, air-flow is entered by the through hole of outer housing 51 under the drive of fan 3, through photocatalyst reduction apparatus 2, passes through anion dust collect plant 4 again, and the through hole by outer housing 55 flows out at last.When desire is cleaned, only need take off outer housing 51 respectively, and be fixed with the outer housing 55 of positive polar body 41, just can clean, thereby reach convenient purpose of cleaning, and can not produce consumptive material photocatalyst net 22 and positive polar body 41.
In addition, the present invention also can be installed control device additional, whether carries out control of dust or emits anion with control anion dust collect plant, and to reach different control models, these patterns comprise: 1. photocatalyst deodorizing sterilizing+anion control of dust; 2. photocatalyst deodorizing sterilizing+emit anion (not carrying out the anion control of dust); 3. only carry out the photocatalyst deodorizing sterilizing.In this case, need high tension loop and low tension loop are separated (circuit structure such as Fig. 8 A, shown in the 8B), and in low tension loop, be connected with on and off switch 7 (be called for short low pressure input on and off switch 7), high tension loop connects tubular polar body and high pressure output switch 6 (being called for short cylinder switch 6), simultaneously, for guaranteeing not arcing (safety), connecting, when disconnecting high-voltage output end cylinder switch, must first cutoff low import on and off switch, and time-delay 10-30s discharge is finished, and connect the cylinder switch is to lean on the adhesive of electromagnetic valve and disconnection to realize, therefore need connect electromagnetic valve 8 (shown in Fig. 9 A and Fig. 9 B) in the circuit, and its control method comprises the steps:
1, controls the keying of high tension loop and low tension loop switch by different way;
2, when the cylinder switch closure, when connecting low pressure input on and off switch, anion dust collect plant 4 carries out work, carries out control of dust and photocatalyst deodorizing sterilizing simultaneously;
3,, when connecting low pressure input on and off switch, emit anion and carry out the photocatalyst deodorizing sterilizing when the disconnection of cylinder switch.
4, when low pressure input on and off switch disconnected, anion dust collect plant 4 was not worked, and only carries out the photocatalyst deodorizing sterilizing.
Concrete control method has following three kinds:
One, manually control
1, with all switch connections, photocatalyst reduction apparatus 2 and anion dust collect plant 4 are worked simultaneously, 1. plant pattern to reach described the;
2, only connect low pressure input power supply, the cylinder switch is disconnected, and 2 work of photocatalyst reduction apparatus are emitted anion simultaneously and 2. planted pattern to reach described the;
3, all switches are disconnected, and have only photocatalyst reduction apparatus 2 work, 3. plant pattern to reach described the.
Two, control automatically: need add flue dust induction apparatus (as IC)
A. detect airborne smoke content when high as IC:
Please cooperate shown in Figure 12ly, a1 partly is the manual part of fan among the figure, and idiographic flow is as follows:
1, enter auto state (AUTO) when by the first time, the action of fan is promptly carried out the smoke content detecting earlier as shown in figure 13 during processing, can use IC, judge airborne smoke content, and regulate rotation speed of the fan automatically, until emitting anion according to the variation of smoke content;
2, when by the second time (High), fan keeps running up by (or fan standard-sized sheet), totally emits anion until air;
3, when pressing for the third time (Middle), fan keeps middling speed running (or only opening half), totally emits anion until air;
4, when by the 4th time (Low/OFF), fan keeps low speed (or stopping), and air has only ion wind;
5, when by the 5th time, get back to auto state.
Partly for carrying out automatic processing section, idiographic flow is as follows for a2:
1, airborne flue dust is detected, can be used IC;
2, if flue dust is arranged, then disconnect low pressure input on and off switch, prolong 10s-30s electromagnetic valve energising afterwards adhesive then, the contact of cylinder switch is connected, and connects low pressure input on and off switch at last, begins to carry out electrostatic precipitation;
3, if no flue dust then disconnects low pressure input on and off switch, electromagnetic valve outage after the long equally 10s-30s, the contact of cylinder switch disconnects, and connects low pressure input on and off switch at last, begins to emit anion.
Above step, photocatalyst reduction apparatus are all the time in work.
B. when detecting airborne smoke content, IC can enter time status (as shown in figure 14) more after a little while
A. (5-10 minute) has only the photocatalyst effect a period of time;
B. a period of time (5-10 minute) photocatalyst+anion.
Three, timing is controlled automatically
Mode A:(as shown in figure 10)
A. a period of time (5-10 minute) photocatalyst+anion control of dust;
B. (5-10 minute) has only the photocatalyst effect a period of time;
C. a period of time (5-10 minute) photocatalyst+anion.
Mode B: do not know the quality of air this moment, not necessarily will emit anion (as shown in figure 11)
A. a period of time (5-10 minute) photocatalyst+anion control of dust;
B. (5-10 minute) has only the photocatalyst effect a period of time.
Claims (9)
1, a kind of air cleaner, comprise photocatalyst reduction apparatus and anion dust collect plant, it is characterized in that: this device is in gas channel, set gradually photocatalyst reduction apparatus and anion dust collect plant along airflow direction, this anion dust collect plant comprises the positive polar body of a hollow tube-shape at least, the axis of this positive polar body is provided with the fixed discharge tip of an end, and positive polar body links to each other with the high-tension circuit plate respectively with discharge tip; Also be provided with in this device and can control, so that its control device that carries out control of dust or emit anion the anion dust collect plant.
2, air cleaner as claimed in claim 1, it is characterized in that: this control device is: high tension loop separates with low tension loop, is connected with on and off switch in the low tension loop, i.e. low pressure input on and off switch, high tension loop connects the anodal body of tubular and high pressure output switch, i.e. cylinder switch.
3, air cleaner as claimed in claim 1 is characterized in that: be provided with the flue dust induction apparatus in this control device.
4, air cleaner as claimed in claim 2 is characterized in that: connect the electromagnetic valve that a time-delay control cylinder switch opens and closes in this high tension loop.
5, the method for using the air cleaner of claim 2 to carry out air cleaning is characterized in that this method comprises the steps:
1) with the keying of setting means control cylinder switch;
2) when the cylinder switch closure, when connecting low pressure input on and off switch, the anion dust collect plant carries out work, carries out control of dust and photocatalyst deodorizing sterilizing simultaneously;
3) the cylinder switch disconnects, and when connecting low pressure input on and off switch, emits anion and carries out the photocatalyst deodorizing sterilizing;
4) when low pressure input on and off switch disconnected, the anion dust collect plant was not worked, and only carries out the photocatalyst deodorizing sterilizing.
6, the method for using the air cleaner of claim 4 to carry out air cleaning is characterized in that this method comprises the steps:
1) disconnects low pressure input on and off switch with setting means control, prolong 10s-30s electromagnetic valve energising afterwards adhesive; The contact of cylinder switch is connected, and connects low pressure input on and off switch, begins to carry out electrostatic precipitation; Photocatalyst reduction apparatus this moment is operate as normal also;
2) disconnect low pressure input on and off switch with setting means control, prolong 10s-30s equally and control afterwards the electromagnetic valve outage, the contact of cylinder switch disconnects, and connects low pressure input on and off switch at last, begins to emit anion.
7, as the method for air cleaning as described in claim 5 or 6, it is characterized in that: the setting means that described control cylinder switch or low pressure input on and off switch open and close has manual control and control automatically.
8, as the method for air cleaning as described in the claim 7, it is characterized in that: describedly be controlled to be timing automatically and control automatically.
9, as the method for air cleaning as described in the claim 7, it is characterized in that: be provided with the flue dust induction apparatus in the described automatic control, this flue dust induction apparatus can be responded to airborne smoke content, controls the keying of each switch with this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB03144007XA CN100333801C (en) | 2003-03-21 | 2003-07-25 | Air purifier and its control method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN03113044.5 | 2003-03-21 | ||
| CN03113044 | 2003-03-21 | ||
| CNB03144007XA CN100333801C (en) | 2003-03-21 | 2003-07-25 | Air purifier and its control method |
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| CN1531975A CN1531975A (en) | 2004-09-29 |
| CN100333801C true CN100333801C (en) | 2007-08-29 |
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| CNB03144007XA Expired - Fee Related CN100333801C (en) | 2003-03-21 | 2003-07-25 | Air purifier and its control method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20140003240A (en) * | 2012-06-29 | 2014-01-09 | 서울바이오시스 주식회사 | Apparatus for cleaning fluid |
| GB201402624D0 (en) * | 2014-02-14 | 2014-04-02 | Tri Air Developments Ltd | Air decontamination device and method |
| CN106912364A (en) * | 2017-03-21 | 2017-07-04 | 东莞新净源净化设备有限公司 | Cultivation case and the clarifier with the cultivation case |
| CN108981031A (en) * | 2018-07-07 | 2018-12-11 | 佛山市三水区希望火炬教育科技有限公司 | A kind of lamps and lanterns purifying air |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000102596A (en) * | 1998-09-29 | 2000-04-11 | Silver Seiko Ltd | Photocatalyst deodorizing device |
| JP2000300936A (en) * | 1999-04-23 | 2000-10-31 | Ebara Corp | Method and apparatus for obtaining negative ion- containing clean air for removing static electricity |
| CN1306454A (en) * | 1997-10-14 | 2001-08-01 | 大金工业株式会社 | Air cleaner |
| JP2002066257A (en) * | 2000-08-29 | 2002-03-05 | Andes Denki Kk | Reaction appratus using photolysis catalyst |
-
2003
- 2003-07-25 CN CNB03144007XA patent/CN100333801C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306454A (en) * | 1997-10-14 | 2001-08-01 | 大金工业株式会社 | Air cleaner |
| JP2000102596A (en) * | 1998-09-29 | 2000-04-11 | Silver Seiko Ltd | Photocatalyst deodorizing device |
| JP2000300936A (en) * | 1999-04-23 | 2000-10-31 | Ebara Corp | Method and apparatus for obtaining negative ion- containing clean air for removing static electricity |
| JP2002066257A (en) * | 2000-08-29 | 2002-03-05 | Andes Denki Kk | Reaction appratus using photolysis catalyst |
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