CN105455737A - 一种净化空气的吸尘器滤芯 - Google Patents
一种净化空气的吸尘器滤芯 Download PDFInfo
- Publication number
- CN105455737A CN105455737A CN201510780197.XA CN201510780197A CN105455737A CN 105455737 A CN105455737 A CN 105455737A CN 201510780197 A CN201510780197 A CN 201510780197A CN 105455737 A CN105455737 A CN 105455737A
- Authority
- CN
- China
- Prior art keywords
- catalyst
- base
- filter element
- dust collector
- active component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000428 dust Substances 0.000 title claims abstract description 45
- 239000003054 catalyst Substances 0.000 claims abstract description 26
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 14
- 239000003426 co-catalyst Substances 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 9
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 7
- 229910021536 Zeolite Inorganic materials 0.000 claims description 7
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052763 palladium Inorganic materials 0.000 claims description 7
- 229910052709 silver Inorganic materials 0.000 claims description 7
- 239000004332 silver Substances 0.000 claims description 7
- 239000010457 zeolite Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 5
- 238000007596 consolidation process Methods 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 231100000719 pollutant Toxicity 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000002079 cooperative effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004887 air purification Methods 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
- B01D46/525—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material which comprises flutes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8637—Simultaneously removing sulfur oxides and nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/82—Phosphates
- B01J29/84—Aluminophosphates containing other elements, e.g. metals, boron
- B01J29/85—Silicoaluminophosphates [SAPO compounds]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
- B01J2229/10—After treatment, characterised by the effect to be obtained
- B01J2229/18—After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself
- B01J2229/183—After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself in framework positions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
- B01J2229/10—After treatment, characterised by the effect to be obtained
- B01J2229/18—After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself
- B01J2229/186—After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself not in framework positions
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biomedical Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Catalysts (AREA)
Abstract
本发明公开了一种净化空气的吸尘器滤芯，包括滤芯两端分别是同心圆形的有中央孔的上支架和有底凹槽的底座，上支架和底座之间设有由环箍和支杆固结成一体的空心骨架，在上支架底面环槽和圆形底座之间的空心骨架外围，固接连续折反等幅皱褶的圆筒状过滤纸筒，a.圆筒状过滤纸筒连续折反的皱褶是顶边向里底边向外的梯形皱褶；b.有底凹槽的底座形成顶边向里底边向外的底座架板；c.与支杆固结成空心骨架的环箍外周形成有底边向外的梯形架板；所述滤纸筒由两层滤纸层及夹杂在两层滤纸层之间的催化剂层组成。本发明所述的吸尘器滤芯在过滤灰尘的同时，降低了室内空气中的污染物含量。
Description
技术领域
本发明涉及吸尘器及空气净化技术领域，具体涉及一种净化空气的吸尘器滤芯。
背景技术
吸尘器按结构可分为立式、卧式和便携式。吸尘器的工作原理是，利用电动机带动叶片高速旋转，在密封的壳体内产生空气负压，吸取尘屑。
吸尘器主要由起尘、吸尘、滤尘三部分组成，一般包括串激整流子电动机、离心式风机、滤尘器(袋)和吸尘附件。一般吸尘器的功率为400-1000W或更高，便携式吸尘器的功率一般为250W及其以下。吸尘器能除尘，主要在于它的“头部”装有一个电动抽风机。抽风机的转轴上有风叶轮，通电后，抽风机会以每秒500圈的转速产生极强的吸力和压力，在吸力和压力的作用下，空气高速排出，而风机前端吸尘部分的空气不断地补充风机中的空气，致使吸尘器内部产生瞬时真空，和外界大气压形成负压差，在此压差的作用下，吸入含灰尘的空气。灰尘等杂物依次通过地毯或地板刷、长接管、弯管、软管、软管接头进入滤尘袋，灰尘等杂物滞留在滤尘袋内，空气经过滤片净化后，再由机体尾部排出。
吸尘器的工作原理是吸尘器电机高速旋转,从吸入口吸入空气，使尘箱产生一定的真空，灰尘通过地刷、接管、手柄、软管、主吸管进入尘箱中的滤尘袋，灰尘被留在滤尘袋内，过滤后的空气再经过一层过滤片进入电机，这层过滤片是防止尘袋破裂灰尘吸入电机的一道保护屏障，进入电机的空气经电机流出,由于电机运行中碳刷不断的磨损，因此流出吸尘器前又加了一道过滤。过滤材料越细密就可以将空气过滤得吸尘器越干净，但透气度就越差，这样影响了电机吸入的风量，降低了吸尘器效率。它的透气度是较低的，因此都做成波浪形以增加透气面积。
但现有的吸尘器过滤部件，其设计的主要考虑是过滤灰尘。但在目前的室内环境中，由于空气中富含大量气态以及微粒污染物，这些气态以及微粒污染物附着在灰尘颗粒上。当吸尘时，其从灰尘颗粒表面脱附，从而重新进入室内环境的气体，导致空气被再次污染。
发明内容
本发明的目的在于提出一种新型的吸尘器滤芯，其能在吸尘器工作时，净化空气中的气态污染物，比如氮氧化物、硫氧化物、芳香族污染物以及空气中的雾霾等。
为达此目的，本发明采用以下技术方案：
一种净化空气的吸尘器滤芯，包括滤芯两端分别是同心圆形的有中央孔的上支架和有底凹槽的底座，上支架和底座之间设有由环箍和支杆固结成一体的空心骨架，在上支架底面环槽和圆形底座之间的空心骨架外围，固接连续折反等幅皱褶的圆筒状过滤纸筒，其特征在于：
a.圆筒状过滤纸筒连续折反的皱褶是顶边向里底边向外的梯形皱褶；
b.有底凹槽的底座形成顶边向里底边向外的底座架板；
c.与支杆固结成空心骨架的环箍外周形成有底边向外的梯形架板；
所述滤纸筒由两层滤纸层及夹杂在两层滤纸层之间的催化剂层组成，所述催化剂层采用的催化剂包括载体、活性组分和助催化剂。
所述载体为β沸石，沸石的骨架结构中Si/(Si+Al+P)摩尔比为0.30；
所述活性组分为掺杂有Sb的V2O5/(MoO3)x(WO3)1-x与TiO2混合物，Sb:V2O5/(MoO3)x(WO3)1-x:TiO2的摩尔比为0.25:1:2，且所述二氧化钛为锐钛矿晶型，所述活性组分在催化剂中的重量含量为0.3％-10％，优选0.5-％-8％，更优选2％-5％。例如，0.8％、1％、1.5％、2％、2.5％、3％、3.5％、4％、4.5％、5％、5.5％、6％、6.5％、7％、7.5％。所述x为0.1-0.5，例如0.2、0.3、0.4、。
所述助催化剂为银和钯，银与钯的摩尔比为2:5，所述助催化剂在催化剂中的重量含量为0.3％-6％，优选0.5％-5％。例如，0.8％、1％、1.5％、2％、2.5％、3％、3.5％、4％、4.5％、5％、5.5％。
优选的，所述活性组分与助催化剂的重量比为5:1～2:1。例如4.5:1、4:1、3.5:1、3:1、2.5:1。
所述催化剂的制备方法可以采取常规的浸渍法以及其他替代方法，本领域技术人员可以根据其掌握的现有技术自由选择，本发明不再赘述。
本发明通过选取特定的β沸石作为载体，以及选取特定比例的掺杂有Sb的V2O5/(MoO3)x(WO3)1-x与TiO2混合物作为活性成分，银和钯作为助催化剂，使得该催化剂产生协同效应，使得该催化剂对空气中的氮氧化物、芳香族化合物以及雾霾的防治有效率达到100％，极大的净化了室内空气。
具体实施方式
本发明通过下述实施例对本发明的催化剂进行说明。
实施例1
通过浸渍法制备得到催化剂，载体为β沸石，沸石的骨架结构中Si/(Si+Al+P)摩尔比为0.30，所述活性组分为掺杂有Sb的V2O5/(MoO3)x(WO3)1-x与TiO2混合物，Sb:V2O5/(MoO3)x(WO3)1-x:TiO2的摩尔比为0.25:1:2，且所述二氧化钛为锐钛矿晶型，所述活性组分在催化剂中的重量含量为4％，所述x为0.25；
所述助催化剂为银和钯，银与钯的摩尔比为2:5，所述助催化剂在催化剂中的重量含量为1％。
将所述催化剂喷夹杂于两层滤纸之间，连续折反等幅皱褶形成圆筒状过滤纸筒，将该过滤纸筒按照如下结构设计得到净化空气的吸尘器滤芯，包括滤芯两端分别是同心圆形的有中央孔的上支架和有底凹槽的底座，上支架和底座之间设有由环箍和支杆固结成一体的空心骨架，在上支架底面环槽和圆形底座之间的空心骨架外围，固接连续折反等幅皱褶的圆筒状过滤纸筒，其特征在于：
a.圆筒状过滤纸筒连续折反的皱褶是顶边向里底边向外的梯形皱褶；
b.有底凹槽的底座形成顶边向里底边向外的底座架板；
c.与支杆固结成空心骨架的环箍外周形成有底边向外的梯形架板。
在PM2.5为300时开窗，使得室内PM2.5与室外相同，关闭门窗，1小时后测试PM2.5，其值仅为12。
经过检测，室内空气中氮氧化物和硫氧化物的含量均降到0.1毫克/立方米以下，远远小于GB/T18883-2002规定的室内空气质量标准的要求。
对比例1
将实施例1的载体替换为活性炭，其余条件不变，1小时后的PM2.5值为56，氧化物和硫氧化物的值均高于1毫克/立方米。
对比例2
将实施例1的Ce替换为La，其余条件不变，1小时后的PM2.5值为48，氧化物和硫氧化物的值均高于1毫克/立方米。
对比例3
将实施例1的Fe替换为Co，其余条件不变，1小时后的PM2.5值为32，氧化物和硫氧化物的值均高于1毫克/立方米。
上述实施例及对比例说明，本发明的催化剂几种组分之间存在特定的联系，省略或替换其中一种或几种，都不能达到本申请的特定效果，证明其产生了协同效应。
申请人声明，本发明通过上述实施例来说明本发明的催化剂，但本发明并不局限于上述催化剂，即不意味着本发明必须依赖上述详细催化剂才能实施。所属技术领域的技术人员应该明了，对本发明的任何改进，对本发明产品各原料的等效替换及辅助成分的添加、具体方式的选择等，均落在本发明的保护范围和公开范围之内。
Claims (5)
1.一种净化空气的吸尘器滤芯，包括滤芯两端分别是同心圆形的有中央孔的上支架和有底凹槽的底座，上支架和底座之间设有由环箍和支杆固结成一体的空心骨架，在上支架底面环槽和圆形底座之间的空心骨架外围，固接连续折反等幅皱褶的圆筒状过滤纸筒，其特征在于：
a.圆筒状过滤纸筒连续折反的皱褶是顶边向里底边向外的梯形皱褶；
b.有底凹槽的底座形成顶边向里底边向外的底座架板；
c.与支杆固结成空心骨架的环箍外周形成有底边向外的梯形架板；
所述滤纸筒由两层滤纸层及夹杂在两层滤纸层之间的催化剂层组成，所述催化剂层采用的催化剂包括载体、活性组分和助催化剂；
所述载体为β沸石，沸石的骨架结构中Si/(Si+Al+P)摩尔比为0.30；
所述活性组分为掺杂有Sb的V2O5/(MoO3)x(WO3)1-x与TiO2混合物，Sb:V2O5/(MoO3)x(WO3)1-x:TiO2的摩尔比为0.25:1:2，且所述二氧化钛为锐钛矿晶型，所述活性组分在催化剂中的重量含量为0.3％-10％，所述x为0.1-0.5；
所述助催化剂为银和钯，银与钯的摩尔比为2:5，所述助催化剂在催化剂中的重量含量为0.3％-6％。
2.如权利要求1所述的吸尘器滤芯，其特征在于，所述活性组分在催化剂中的重量含量为0.5-％-8％。
3.如权利要求2所述的吸尘器滤芯，其特征在于，所述活性组分在催化剂中的重量含量为2％-5％。
4.如权利要求1所述的吸尘器滤芯，其特征在于，所述助催化剂在催化剂中的重量含量为0.5％-5％。
5.如权利要求1所述的吸尘器滤芯，其特征在于，所述活性组分与助催化剂的重量比为5:1～2:1。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510780197.XA CN105455737A (zh) | 2015-11-13 | 2015-11-13 | 一种净化空气的吸尘器滤芯 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510780197.XA CN105455737A (zh) | 2015-11-13 | 2015-11-13 | 一种净化空气的吸尘器滤芯 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105455737A true CN105455737A (zh) | 2016-04-06 |
Family
ID=55594265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510780197.XA Withdrawn CN105455737A (zh) | 2015-11-13 | 2015-11-13 | 一种净化空气的吸尘器滤芯 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105455737A (zh) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1181886A2 (en) * | 2000-08-19 | 2002-02-27 | Lg Electronics Inc. | Cyclone dust collector and vacuum cleaner using such dust collector |
| JP2003190061A (ja) * | 2001-12-12 | 2003-07-08 | Samsung Kwangju Electronics Co Ltd | 真空掃除機のサイクロン集塵装置 |
| CN1919132A (zh) * | 2005-08-22 | 2007-02-28 | 乐金电子(天津)电器有限公司 | 吸尘器滤芯 |
| CN104069867A (zh) * | 2014-07-11 | 2014-10-01 | 武汉大学 | 一种整体式催化剂及其制备方法和应用 |
-
2015
- 2015-11-13 CN CN201510780197.XA patent/CN105455737A/zh not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1181886A2 (en) * | 2000-08-19 | 2002-02-27 | Lg Electronics Inc. | Cyclone dust collector and vacuum cleaner using such dust collector |
| JP2003190061A (ja) * | 2001-12-12 | 2003-07-08 | Samsung Kwangju Electronics Co Ltd | 真空掃除機のサイクロン集塵装置 |
| CN1919132A (zh) * | 2005-08-22 | 2007-02-28 | 乐金电子(天津)电器有限公司 | 吸尘器滤芯 |
| CN104069867A (zh) * | 2014-07-11 | 2014-10-01 | 武汉大学 | 一种整体式催化剂及其制备方法和应用 |
Non-Patent Citations (1)
| Title |
|---|
| 闫志勇等: "V2O5-WO3-MoO3/TiO2催化剂制备及NH3选择性还原NOX的试验研究", 《动力工程》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207562538U (zh) | 一种脉冲布袋式除尘器 | |
| CN107349701A (zh) | 一种空气净化器 | |
| CN206910041U (zh) | 一种室内空气净化茶几 | |
| CN107617304A (zh) | 一种空气净化装置 | |
| CN105433869A (zh) | 一种净化空气的吸尘器 | |
| CN1809408A (zh) | 可清洁的高效过滤介质结构及其应用 | |
| CN105455735A (zh) | 一种净化空气的吸尘器滤芯 | |
| CN105455740A (zh) | 一种净化空气的吸尘器 | |
| CN105455737A (zh) | 一种净化空气的吸尘器滤芯 | |
| CN105433864A (zh) | 一种净化空气的吸尘器滤芯 | |
| CN105286724A (zh) | 一种净化空气的吸尘器滤芯 | |
| CN105286722A (zh) | 一种净化空气的吸尘器滤芯 | |
| CN105361814A (zh) | 一种净化空气的吸尘器 | |
| CN206577493U (zh) | 一种双臂焊烟净化器 | |
| CN105433866A (zh) | 一种净化空气的吸尘器 | |
| CN105249892A (zh) | 一种净化空气的吸尘器滤芯 | |
| CN105455736A (zh) | 一种净化空气的吸尘器滤芯 | |
| CN105433867A (zh) | 一种净化空气的吸尘器 | |
| CN105286723A (zh) | 一种净化空气的吸尘器滤芯 | |
| CN105286725A (zh) | 一种净化空气的吸尘器 | |
| CN105266715A (zh) | 一种净化空气的吸尘器 | |
| CN105455728A (zh) | 一种净化空气的吸尘器 | |
| CN105433865A (zh) | 一种净化空气的吸尘器滤芯 | |
| CN105249894A (zh) | 一种净化空气的吸尘器滤芯 | |
| CN108224599A (zh) | 一种室内空气净化器 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160406 |