CN203578001U - Oil smoke entrapment device and lampblack absorber - Google Patents
Oil smoke entrapment device and lampblack absorber Download PDFInfo
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- CN203578001U CN203578001U CN201320686536.4U CN201320686536U CN203578001U CN 203578001 U CN203578001 U CN 203578001U CN 201320686536 U CN201320686536 U CN 201320686536U CN 203578001 U CN203578001 U CN 203578001U
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- oil smoke
- ionization
- capturing device
- anode
- high pressure
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- 239000000779 smoke Substances 0.000 title claims abstract description 106
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 29
- 239000006233 lamp black Substances 0.000 title claims abstract description 29
- 230000005611 electricity Effects 0.000 claims abstract description 11
- 239000000428 dust Substances 0.000 claims description 31
- 238000009296 electrodeionization Methods 0.000 claims description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 2
- 239000003546 flue gas Substances 0.000 claims description 2
- 240000002853 Nelumbo nucifera Species 0.000 abstract 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 abstract 3
- 235000006510 Nelumbo pentapetala Nutrition 0.000 abstract 3
- 239000002245 particle Substances 0.000 description 34
- 239000004071 soot Substances 0.000 description 30
- 230000000694 effects Effects 0.000 description 9
- 230000005684 electric field Effects 0.000 description 9
- 239000003517 fume Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 208000000059 Dyspnea Diseases 0.000 description 1
- 206010013975 Dyspnoeas Diseases 0.000 description 1
- 206010022998 Irritability Diseases 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000005596 ionic collisions Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036651 mood Effects 0.000 description 1
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Abstract
The utility model discloses an oil smoke entrapment device, include: the high voltage ionization portion, the high voltage ionization portion supplies power through ground first high voltage power supply V1, the high voltage ionization portion at least include one take the positive pole ionization portion of high pressure and with the negative pole ionization portion that positive pole ionization portion corresponds the setting, all have point discharge portion more than the two sides of positive pole ionization portion. According to the configuration, the utility model discloses can make the production be used for the oil smoke electric charge quantity to increase, improve the lotus electric efficiency of oil smoke entrapment device. Furthermore, the utility model also provides a lampblack absorber uses above-mentioned oil smoke entrapment device, and when the oil smoke entrapment device was provided with more point discharge portion, the lampblack absorber produced more charges through the oil smoke entrapment device and was used for the oil smoke lotus electricity, has improved the lotus electric efficiency and the entrapment efficiency of lampblack absorber.
Description
Technical field
The utility model relates to fume purifying field, more specifically, relates to a kind of oil smoke capturing device.
Background technology
At present, the lampblack absorber that people use, is all generally directly oil smoke to be discharged to open air from kitchen by air exhauster, and does not process through any device centre.This just causes most of oil smoke particle directly to enter outdoor space, severe contamination atmospheric environment.Oil smoke is actually heated oily object, becomes the soot particles that volume is very little after evaporation, is mixed to form with steam and air.If lived in for a long time in the air of fume pollution, easily palpitate quickly, expiratory dyspnea, mood irritability.
Certainly, part lampblack absorber also possesses certain fume purifying function.This lampblack absorber adopts structure as shown in Figure 1.This lampblack absorber makes air ionization by electrion end 102, forms ion; Oil smoke and ion collision are charged, to netted earth terminal 103, move.Netted earth terminal 103 physics interception simultaneously part smoke particle.Like this, discharged to being exactly low oil smoke air 105 in atmospheric environment.The problem of this structure is, lampblack absorber is longer service time, and windage is larger.
Part environment-protecting kitchen ventilator has also been considered the problem of complete machine windage, adopts structure as shown in Figure 2 to carry out fume purifying.Oil smoke enters lampblack absorber inside from left side shown in Fig. 2, and high pressure V1 acts on the strong electric field ionization surrounding air forming on corona wire, makes smoke particle charged.Charged smoke particle enter high pressure V2 form electric field in be captured.This lampblack absorber has solved the problem of windage, but a capture rate of oil smoke has much room for improvement.
Utility model content
The utility model provides a kind of oil smoke capturing device, and it can produce, and more multi-charge is charged for oil smoke, has improved the charged efficiency of oil smoke capturing device.
The utility model provides a kind of oil smoke capturing device, comprise: high pressure ionization portion, described high pressure ionization portion 1 is by ground the first high voltage source V1 power supply, described high pressure ionization portion at least comprises an anode ionization part 5 with high pressure positive electricity and the negative electrode ionization part 9 with the corresponding setting of described anode ionization part, and the two sides of described anode ionization part 5 is above all with point discharge portion.
Preferably, described anode ionization part is anode ionization plate and/or anode ionization tube.
Preferably, the point discharge portion in described anode ionization plate is formed by the sparking electrode of sawtooth pattern.
Preferably, described zigzag sparking electrode is arranged in described anode ionization plate with matrix-style.
Preferably, the point discharge portion on described anode ionization tube is formed by sawtooth pattern and/or star-like sparking electrode.
Preferably, the end surface shape of described star-like sparking electrode is four jiaos of stars or five-pointed star.
Preferably, described anode ionization tube is multiple, and along continuous straight runs arranges successively, and is connected to the first high voltage source V1 by wire.
Preferably, described oil smoke capturing device also comprises the dust collecting part that is arranged in described high pressure ionization portion 1 rear side along flow of flue gas direction, described dust collecting part at least comprises an anode collecting plate with high pressure positive electricity and the negative electrode collecting plate with the corresponding layout of described anode collecting plate, on described negative electrode collecting plate, spoiler is set.
Preferably, described spoiler is projection.
The utility model also provides a kind of lampblack absorber, comprises above-mentioned oil smoke capturing device.
The oil smoke capturing device that the utility model provides, comprise high pressure ionization portion, this high pressure ionization portion at least comprises an anode ionization part with high pressure positive electricity, by more than the two sides at anode ionization part being provided with point discharge portion, thereby increase point discharge portion, and then produce that more multi-charge is charged for oil smoke, by increasing amount of charge, the charged efficiency that has improved oil smoke capturing device traps effect with oil smoke.
The lampblack absorber that the utility model provides, when oil smoke capturing device is provided with more point discharge portion, lampblack absorber produces by oil smoke capturing device that more multi-charge is charged for oil smoke, has improved charged efficiency and the arresting efficiency of lampblack absorber.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the utility model background technology lampblack absorber;
Fig. 2 is the structural representation of the utility model background technology fume purifier of fume;
Fig. 3 is the star-like sparking electrode sectional view of the utility model oil smoke capturing device;
Fig. 4 is the oil smoke capturing device structural representation of the utility model with sawtooth pattern sparking electrode;
Fig. 5 is that the utility model oil smoke capturing device sawtooth pattern sparking electrode matrix in anode ionization plate is arranged schematic diagram;
Fig. 6 is that the utility model oil smoke capturing device sawtooth pattern sparking electrode is arranged schematic diagram on anode ionization tube;
Fig. 7 is that the utility model soot particles is at the stressed schematic diagram of dust collecting part;
Fig. 8 is the oil smoke capturing device structural representation of the utility model with spoiler;
Fig. 9 is the utility model oil smoke capturing device plural serial stage structural representation.
Description of reference numerals:
101, high oil smoke air, 102, electrion end, 103, earth terminal, 104, blower fan, 105, low oil smoke air, 1, high pressure ionization portion, 2, dust collecting part, 3, the first discharge channel, 4, the second discharge channel, 5, anode ionization part, 51, anode ionization plate, 52, anode ionization tube, 6, point discharge portion, 7, spoiler, 8, oil smoke capturing device, 9, negative electrode ionization part, 10, anode collecting plate, 11, negative electrode collecting plate, 12, first order oil smoke capturing device, 13, second level oil smoke capturing device
The specific embodiment
This specific embodiment provides a kind of oil smoke capturing device, and it can make to produce and increase for the charged amount of charge of oil smoke, has improved the charged efficiency of oil smoke capturing device.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Referring to drawings and Examples, the utility model is described in detail.
[oil smoke capturing device overall structure]
Referring to Fig. 4, oil smoke capturing device 8 comprises high pressure ionization portion 1, dust collecting part 2 and the first high voltage source V1, the second high voltage source V2.High pressure ionization portion 1 has the anode ionization part 5 of positively charged, and its voltage can, up to more than 10,000 volts, have very strong attraction to soot particles.When soot particles passes from high pressure ionization portion 1, will be ionized, charge, make soot particles positively charged.Dust collecting part 2 comprises multiple anode collecting plates 10 with high pressure positive electricity and the negative electrode collecting plate 11 of ground connection, and each anode collecting plate 10 and negative electrode collecting plate 11 compartment of terrain arranged stacked, between adjacent anode collecting plate 10 and negative electrode collecting plate 11, produce very strong electric field, the gap between each adjacent anode collecting plate 10 and negative electrode collecting plate 11 forms multiple fluid passages.The soot particles of positively charged is under the effect of air exhauster; can be from multiple fluid passages process of dust collecting part 2; when charged soot particles from highfield through out-of-date; according to the two like magnetic poles repel each other of electric charge, principle of opposite sex attraction; charged soot particles can produce yaw motion to cathode direction; and collide with negative electrode, finally by negative electrode, adsorbed.
[high pressure ionization portion]
Referring to Fig. 4, high pressure ionization portion 1 is by the first high voltage source V1 power supply, high pressure ionization portion 1 at least comprises an anode ionization part 5 with high pressure positive electricity, and the negative electrode ionization part 9 of setting corresponding to anode ionization part 5, wherein, the two sides of anode ionization part 5 is above all with point discharge portion 6, increase point discharge portion 6 not changing on the former basis having living space, can produce that more multi-charge is charged for oil smoke, by increasing amount of charge, improved charged efficiency and the oil smoke trapping effect of oil smoke capturing device.
Referring to Fig. 5 and Fig. 6, the anode ionization part 5 of high pressure ionization portion 1 can be set to anode ionization plate 51, and also can be set to anode ionization tube 52 or be set to part is anode ionization plate 51, and another part is the form of anode ionization tube 52.
Referring to Fig. 5, when using anode ionization plate 51, can adopt the sparking electrode of the sawtooth pattern discharge part 6 that tapers off to a point, this zigzag sparking electrode is arranged at the front and back of anode ionization plate 51, thereby is increased point discharge portion 6.Preferably, this zigzag sparking electrode is arranged in described anode ionization plate 51 with matrix-style.
Referring to Fig. 6, when using anode ionization tube 52, can adopt equally the sparking electrode of the sawtooth pattern discharge part 6 that tapers off to a point, also can adopt the star-like sparking electrode discharge part 6 that tapers off to a point, or a part adopts the sparking electrode of sawtooth pattern, and another part adopts star-like sparking electrode.Wherein the cross section of star-like sparking electrode as shown in Figure 3, can be four jiaos of stars or five-pointed star.When adopting sawtooth pattern sparking electrode, the sparking electrode of this sawtooth pattern is arranged in the tow sides of anode ionization tube 52, and when adopting star-like sparking electrode, anode ionization tube 52 is through this star-like sparking electrode setting.
Adopt above-mentioned sparking electrode, electric discharge all can be realized in the tip that the electrode of every kind of shape has, and compared with existing filament plate sparking electrode, can produce that more multi-charge is charged for oil smoke.Silk parts in existing filament plate sparking electrode are easily broken, and in contrast, the sawtooth pattern that the utility model adopts or star-like sparking electrode reliability are higher, not easily broken.
When the anode ionization tube 52 adopting is while being multiple, these anode ionization tube 52 along continuous straight runs are arranged successively, and are connected to respectively the first high voltage source V1 by wire.Adopt this anode ionization tube structure, increased equally the quantity of discharge tip end 6, produce that more multi-charge is charged for oil smoke, improved the charged efficiency of oil smoke capturing device.
Referring to Fig. 4, between every adjacent two negative electrode ionization parts 9, form a discharge channel.High pressure ionization portion 1 comprises one or more discharge channels.Preferably, discharge channel comprises the first discharge channel 3, the second discharge channel 4.As an embodiment of the present utility model, an anode ionization part 5 is set in above-mentioned each discharge channel.
[dust collecting part]
Fig. 7 has represented the motion conditions that be subject to electric field force of charged soot particles in the fluid passage of dust collecting part, and wherein, V is the initial velocity that soot particles enters fluid passage, is substantially equal to the wind speed of lampblack absorber.As can be seen from Figure 7, excessive when lampblack absorber wind speed, or soot particles is charged insufficient, or dust collecting part electric field strength E is when weak, and soot particles (charged) will be blown outside dust collecting part, cannot trap, and oil smoke capture rate reduces.Generally, lampblack absorber exhausting amount and oil smoke amount are to match, and are not easy to change; And the voltage of raising high pressure ionization portion 1, can guarantee that soot particles is fully charged, in dust collecting part district electric-field intensity be certain in the situation that, improved capture rate one time, but in order to improve the voltage of high pressure ionization portion, need to propose higher requirement to voltage module, and voltage is too high, can bring larger electrical safety hidden danger to complete machine.
Referring to Fig. 8, dust collecting part 2 comprises at least one anode collecting plate 10 with high pressure positive electricity and the negative electrode collecting plate 11 of at least one ground connection, and mutually insulated between anode collecting plate 10 and described negative electrode collecting plate 11.The soot particles of positively charged is under the effect of air exhauster; can be from the fluid passage process between adjacent anode collecting plate 10 and negative electrode collecting plate 11; and the very strong electric field of existence between adjacent anode collecting plate 10 and negative electrode collecting plate 11; therefore; when charged soot particles from highfield through out-of-date; charged soot particles can produce yaw motion to negative electrode collecting plate 11, and collides with negative electrode collecting plate 11, finally by negative electrode collecting plate 11, is adsorbed.
As shown in Figure 8, on the negative electrode collecting plate 11 of dust collecting part 2, be provided with spoiler 7.Preferably, spoiler 7 is projection.The flow-disturbing that such spoiler 7 can cause dust collecting part 2 air-flows is set, can hinder to a certain extent passing through of charged soot particles, extended charged soot particles through the required time of dust collecting part district, when electric-field intensity and soot particles carried charge are a timing, a capture rate of soot particles significantly improves.
Preferably, above-mentioned spoiler 7 is arranged on negative electrode collecting plate 11 object gas flows by a side of direction.Because the soot particles that passes through high pressure ionization portion 1 is with positive electricity; when it enters dust collecting part district; charged soot particles can produce yaw motion to negative electrode collecting plate 11 directions; finally by negative electrode collecting plate 11, adsorbed; so above-mentioned spoiler 7 is arranged on to the side that negative electrode collecting plate 11 object gas flows pass through; can hinder to a certain extent passing through of charged soot particles; extended charged soot particles through the required time of dust collecting part district; be conducive to charged soot particles and adsorbed by negative electrode collecting plate 11, improved a capture rate of oil smoke capturing device oil smoke.
Preferably, can increase the length of dust collecting part 2 simultaneously, reduce the soot particles quantity escaping into outside dust collecting part 2.Because lampblack absorber has longer oil smoke passage, and the space of oil smoke passage is larger, can more easily increase the length of dust collecting part 2, thereby improves an arresting efficiency of oil smoke capturing device oil smoke.
[high pressure ionization portion and dust collecting part]
High pressure ionization portion 1 comprises the negative electrode ionization part 9 of at least one ground connection, between every adjacent two negative electrode ionization parts 9, forms a discharge channel.For each discharge channel of high pressure ionization portion 1, correspondence arranges one or more groups dust collecting part 2.One group of dust collecting part 2 comprises an anode collecting plate 10 with high pressure positive electricity and the negative electrode collecting plate 11 of a ground connection.
Due to the spacing difference between anode collecting plate 10 and negative electrode collecting plate 11, be added in the also difference of voltage on anode collecting plate 10.The spacing of anode collecting plate 10 and negative electrode collecting plate 11 is larger, and in order to guarantee to trap oil smoke effect, the voltage that need to apply is also higher.In order to reduce the voltage in dust collecting part district, guarantee oil smoke trapping effect simultaneously, preferably, each discharge channel of the utility model high pressure ionization portion 1, at most corresponding two groups of dust collecting part 2.
[series connection of multi-grade oil smoke catching device]
For lampblack absorber, when the long-pending timing of duct cross-section, the length in whole air channel is relatively long.In order further to improve a capture rate of oil smoke, preferably, the utility model adopts the structure of oil smoke capturing device two-stage or plural serial stage.
Two-stage series connection structure as shown in Figure 9, the soot particles not trapping for first order oil smoke capturing device 12, traps by second level oil smoke capturing device 13.For the structure of two-stage or plural serial stage, the voltage of the first high voltage source V1 of high pressure ionization portion 1 discharge tip of first order oil smoke capturing device 12 is a little less than the voltage of the third high voltage source V3 of high pressure ionization portion 1 discharge tip of second level oil smoke capturing device 13, during plural serial stage by that analogy.By lower the voltage setting of the first high voltage source V1 of high pressure ionization portion 1 discharge tip of first order oil smoke capturing device 12, the voltage setting of the third high voltage source V3 of high pressure ionization portion 1 discharge tip of second level oil smoke capturing device 13 is higher, larger-diameter soot particles is trapped by first order oil smoke capturing device 12 on the one hand, now first order oil smoke capturing device 12 plays the effect of primary filter, and the effect that reaches energy-conserving and environment-protective, improves oil smoke arresting efficiency is set on the other hand like this.
Preferably, the high pressure ionization portion 1 of above-mentioned first order oil smoke capturing device 12, the high pressure ionization portion 1 of second level oil smoke capturing device 13 all adopt sawtooth pattern or star-like sparking electrode, increase discharge tip terminal number, produced that more multi-charge is charged for oil smoke, improved the charged efficiency of oil smoke capturing device.
Preferably, in the dust collecting part 2 of first order oil smoke capturing device 12, the dust collecting part 2 of second level oil smoke capturing device 13, be provided with spoiler 7, stopped to a certain extent passing through of charged soot particles, increased the time of staying of charged soot particles in dust collecting part district, when electric-field intensity and one timing of particulate carried charge, a capture rate of oil smoke significantly improves.
[lampblack absorber]
The utility model also provides a kind of lampblack absorber, comprises above-described oil smoke capturing device.
When oil smoke capturing device is provided with more point discharge portion 6, lampblack absorber produces by oil smoke capturing device that more multi-charge is charged for oil smoke, has improved charged efficiency and the arresting efficiency of lampblack absorber.
When oil smoke capturing device plural serial stage, Hood Controller is according to the size of oil smoke concentration, and whether the operation of the different oil smoke capturing devices of automatic or manual control, realized low-power consumption.
Adopt the lampblack absorber of multi-grade oil smoke catching device series connection, both improved the oil smoke arresting efficiency of lampblack absorber, substantially can not increase again complete machine windage, and can whether move according to oil smoke concentration automatic or manual control oil smoke capturing device, reach the effect of energy-conserving and environment-protective.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. an oil smoke capturing device, comprising:
High pressure ionization portion (1), described high pressure ionization portion (1) powers by the first high voltage source V1,
It is characterized in that: described high pressure ionization portion (1) at least comprises an anode ionization part (5) with high pressure positive electricity and the negative electrode ionization part (9) with the corresponding setting of described anode ionization part (5), and the two sides of described anode ionization part (5) is above all with point discharge portion (6).
2. oil smoke capturing device according to claim 1, is characterized in that, described anode ionization part (5) is anode ionization plate (51) and/or anode ionization tube (52).
3. oil smoke capturing device according to claim 2, is characterized in that, the point discharge portion (6) in described anode ionization plate (51) is formed by the sparking electrode of sawtooth pattern.
4. oil smoke capturing device according to claim 3, is characterized in that, described zigzag sparking electrode is arranged in described anode ionization plate (51) with matrix-style.
5. oil smoke capturing device according to claim 2, is characterized in that, the point discharge portion (6) on described anode ionization tube (52) is formed by sawtooth pattern and/or star-like sparking electrode.
6. oil smoke capturing device according to claim 5, is characterized in that, the end surface shape of described star-like sparking electrode is four jiaos of stars or five-pointed star.
7. oil smoke capturing device according to claim 5, is characterized in that, described anode ionization tube (52) is multiple, and along continuous straight runs arranges successively, and is connected to the first high voltage source V1 by wire.
8. according to the oil smoke capturing device described in claim 1-7 any one, it is characterized in that, described oil smoke capturing device also comprises the dust collecting part (2) that is arranged in described high pressure ionization portion (1) rear side along flow of flue gas direction, described dust collecting part (2) at least comprises an anode collecting plate (10) with high pressure positive electricity and the negative electrode collecting plate (11) with the corresponding layout of described anode collecting plate (10), and spoiler (7) is set on described negative electrode collecting plate (10).
9. oil smoke capturing device according to claim 8, is characterized in that, described spoiler (7) is projection.
10. a lampblack absorber, is characterized in that: comprise the oil smoke capturing device as described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320686536.4U CN203578001U (en) | 2013-11-01 | 2013-11-01 | Oil smoke entrapment device and lampblack absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320686536.4U CN203578001U (en) | 2013-11-01 | 2013-11-01 | Oil smoke entrapment device and lampblack absorber |
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| Publication Number | Publication Date |
|---|---|
| CN203578001U true CN203578001U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320686536.4U Expired - Fee Related CN203578001U (en) | 2013-11-01 | 2013-11-01 | Oil smoke entrapment device and lampblack absorber |
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| Country | Link |
|---|---|
| CN (1) | CN203578001U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104607314A (en) * | 2013-11-01 | 2015-05-13 | 珠海格力电器股份有限公司 | Oil smoke entrapment device and lampblack absorber |
| CN107282302A (en) * | 2016-03-31 | 2017-10-24 | 韩国科学技术研究院 | Combined type dust collect plant |
-
2013
- 2013-11-01 CN CN201320686536.4U patent/CN203578001U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104607314A (en) * | 2013-11-01 | 2015-05-13 | 珠海格力电器股份有限公司 | Oil smoke entrapment device and lampblack absorber |
| CN107282302A (en) * | 2016-03-31 | 2017-10-24 | 韩国科学技术研究院 | Combined type dust collect plant |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 |