CN103120875A - Bifacial filter screen structure - Google Patents
Bifacial filter screen structure Download PDFInfo
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- CN103120875A CN103120875A CN2011103692778A CN201110369277A CN103120875A CN 103120875 A CN103120875 A CN 103120875A CN 2011103692778 A CN2011103692778 A CN 2011103692778A CN 201110369277 A CN201110369277 A CN 201110369277A CN 103120875 A CN103120875 A CN 103120875A
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- filter screen
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- sided filter
- stand
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- 239000000428 dust Substances 0.000 claims abstract description 4
- 238000009423 ventilation Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 13
- 238000001914 filtration Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a bifacial filter screen structure. The bifacial filter screen structure is used for ventilating and dust prevention of electronic instruments, comprises a filter screen support and at least two pieces of filter screens, wherein the filter screen support is an individual support part and comprises an integrated frame and a middle supporting strip; the two sides of the filter screen support respectively comprises a buckling part which is formed on the filter screen support in an integration manner and is used for buckling the filter screens, and the filter screens are arranged respectively from the two outer sides of the filter screen support; and the buckling parts are fixed on the two sides of the filter screen support in a buckling form, and the middle supporting strip can divide the filter screens arranged on the two sides of the middle supporting strip. The bifacial filter screen structure provided by the invention has the advantages that the structure of the device is concise, few parts are needed, and the filter screens are easy and convenient to fix, assemble and disassemble.
Description
Technical field
The present invention relates to for the ventilation of electronic instrument and dustproof two-sided filter screen structure.
Background technology
Be provided with ventilating opening in some electronic instruments, pass through ventilating opening in order to prevent dust and other impurities, usually will filter screen structure be set at ventilating opening.
Because the screen pack material is very soft, yielding, so need to use support part that it is fixed, forming a screen modules could use.
Requirement based on to the purifying rate of air needs to adopt two-sided filter screen structure sometimes.A kind of two-sided filter screen structure of prior art is as shown in Figure 17 and 18, and Figure 17 is its decomposition diagram, and Figure 18 is the perspective coating figure.This two-sided filter screen structure is " 3+2 " structure, that is, two- layer screen pack 110A and 110B are clipped in the middle by three supports 130,140,150 and form double medium filtration web frame 100.The shortcoming of this structure is complex structure, and part is various, and filter screen replacement time dismounting is inconvenient, etc.
Summary of the invention
Consider foregoing problems, the present invention's purpose be to provide a kind of simple for structure, part is few, screen pack is fixed and dismantle easy two-sided filter screen structure.
In addition, the present invention's design also needs to consider following technical problem:
1. screen pack should be perpendicular to the gas flow face;
2. filter area wants enough large;
3. will provide two-sided filter screen structure, wherein a screen pack is subject to gas pressure, and on the contrary, the another side screen pack just is subject to the gas pulling force, thereby should all screen pack be supported at the both direction of structure.
thus, the invention provides a kind of two-sided filter screen structure, it is used for the ventilation of electronic instrument and prevents dust, comprise a filter screen stand and at least two screen packs, described filter screen stand is an independent support part, comprise integrated frame and intermediate support bar, the both sides of described filter screen stand include the buckle part that is used for withholding described screen pack that is integrally formed on this filter screen stand, described screen pack is installed from two outsides of described filter screen stand respectively, be fixed on the both sides of described filter screen stand with the buckle form by described buckle part, and described intermediate support bar makes the screen pack that is positioned at both sides spaced apart.
Preferably, the described buckle of each side of described filter screen stand partly includes a plurality of alignment pins, described a plurality of alignment pin is the cylinder that intersects with screen pack, be spaced apart from each other, the inwall of contiguous described frame also forms with described frame, described a plurality of alignment pin passes respectively the pin-and-hole that is positioned at the screen pack periphery, thereby screen pack is positioned and fixes.
Preferably, described alignment pin is cylinder, and described pin-and-hole is circular hole.
Preferably, described buckle part also comprises a plurality of from described frame to the outstanding stay hook in filter screen stand center, is used for the surrounding of screen pack is positioned.
Preferably, described screen pack is sponge.
Preferably, described screen pack is papery.
Preferably, the position of buckle part that is arranged on filter screen stand one side is asymmetric with the position of the buckle part that is arranged on the filter screen stand opposite side, thereby the screen pack that is installed on both sides can not exchange.
Preferably, be installed on filter screen stand not the screen pack of homonymy that the position of fixing hole is set is not identical, with respectively with the clamping part of a corresponding side divide corresponding, thereby the screen pack that is installed on both sides can not exchange.
Preferably, described buckle part also comprises a plurality of fixed legs, this fixed leg has the head projection, the lateral dimension of this head projection is greater than the lateral dimension of the end portion of fixed leg, and the lateral dimension of this head projection is greater than the radial dimension in the post hole in screen pack, and a plurality of described post hole in screen pack can be passed respectively the head projection of described a plurality of fixed legs and be inserted in described a plurality of fixed leg.
Preferably, the end portion that is positioned at the head projection of described fixed leg is cuboid, and described post hole is square hole.
Preferably, described buckle part also comprises a plurality of cross one another press strips, and the two ends of these press strips are positioned at the frame of filter screen stand, are snapped in respectively between these press strips and described intermediate support bar with the screen pack with both sides.
Preferably, described buckle part comprises that also a plurality of described profile is flexible from described frame to the outstanding profile in filter screen stand center, and these profiles are fastened and are buckled together with the buckle portion of fastening that is positioned on described intermediate support bar after clamping screen pack.
Two-sided filter screen structure provided by the invention can access following technique effect:
1, do not need other servicing unit and only need a trestle component just can at least two screen packs that be positioned at both sides to be fixed, thereby part is few, simple for structure;
2, need to be by external tool in fixation procedure;
3, screen pack is fixed, is dismantled simply, and the folding of double-side filtering net dress limits without sequencing;
4, owing to for example can be designed as and have any different in the position of fixed leg or alignment pin in the buckle of both sides part, therefore can accomplish to prevent the screen pack wrongly installed, thereby can satisfy in easy mode at homonymy not, the requirement of different screen packs is set.
The present invention also provides a kind of two-sided filter screen structure assembly, comprises at least two foregoing two-sided filter screen structures, and these two-sided filter screen structures utilize hinge fraction to couple together, thereby these filter screen structures can be superimposed together.Utilize such assembly, can fold easily due to two-sided filter screen stand structure longitudinal size and the filter course quantity that changes filter screen structure, thereby can obtain easily the filter screen structure of multiple filtration, and also can obtain large-area filter screen structure, be convenient to packing, transportation and the storage of two-sided screen pack.
The present invention also provides a kind of projecting apparatus, and it comprises aforesaid two-sided filter screen structure or aforesaid two-sided filter screen structure assembly.
Description of drawings
Fig. 1 is the perspective view with the projecting apparatus of two-sided filter screen structure of the present invention, has wherein removed the screen that covers two-sided filter screen structure;
Fig. 2 illustrates two-sided filter screen structure of the present invention and how to install projecting apparatus buckle-type;
Fig. 3 is the partial view from Fig. 1 intercepting, and the state after two-sided filter screen structure is installed is shown;
Fig. 4 is the perspective view of the first embodiment of two-sided filter screen structure of the present invention;
Fig. 5 is the decomposition diagram of two-sided filter screen structure shown in Figure 4;
Fig. 6 is the enlarged perspective that illustrates along the cross section of the line A-A of Fig. 4;
Fig. 7 is the section plan of variant embodiment embodiment illustrated in fig. 6, and slice location is identical with Fig. 6, and this two-sided filter screen structure has the three layer filtration net;
Fig. 8 is the perspective view of the first embodiment of filter screen stand of the present invention;
Fig. 9 is the enlarged perspective that illustrates from the alignment pin of Fig. 8 intercepting;
Figure 10 is the enlarged perspective that illustrates from the stay hook of Fig. 8 intercepting;
Figure 11 is the enlarged perspective that illustrates from the fixed leg of Fig. 8 intercepting;
Figure 12 is the perspective view of the second embodiment of two-sided filter screen structure of the present invention;
Figure 13 is the perspective view of the filter screen stand of the second embodiment of the present invention;
Figure 14 is the perspective view of the 3rd embodiment of two-sided filter screen structure of the present invention;
Figure 15 is the perspective view of the filter screen stand of the third embodiment of the present invention;
Figure 16 A, 16B and 16C are the perspective views that two-sided filter screen structure assembly of the present invention is shown.
Figure 17 is the decomposition diagram of the two-sided filter screen structure of prior art;
Figure 18 is the perspective coating figure of the two-sided filter screen structure of prior art;
The specific embodiment
Hereinafter, to be applied to projecting apparatus, the embodiment of two-sided filter screen structure of the present invention is described as example with reference to the accompanying drawings.
Being the specific specific embodiment of the present invention at the embodiment of this record, being used for design of the present invention is described, is all explanatory and exemplary, should not be construed as the restriction to embodiment of the present invention and the scope of the invention.Except the embodiment of this record, those skilled in the art can also adopt apparent other technical scheme based on the application's claims and the disclosed content of specification, and these technical schemes comprise the technical scheme of making any apparent substitutions and modifications that adopts at the embodiment of this record.The scope of the technical scheme that the present invention is claimed is limited by claims of the application.
The accompanying drawing of this specification is schematic diagram, aid illustration design of the present invention, and the diagrammatically shape of indication device structure and parts and correlation, and for the purpose of being convenient to read, the ratio of illustrated some size may be through zooming in or out.In this manual, identical reference marker is used for parts like representation class.
Two-sided filter screen structure of the present invention can be applied to various electronic instruments as required, and is existing to be applied to projecting apparatus as example explanation design of the present invention.
Fig. 1 is the perspective view with the projecting apparatus of two-sided filter screen structure of the present invention.This two-sided filter screen structure 1 is positioned at the position near the surface of shell of projecting apparatus, for ease of two-sided filter screen structure is shown, has removed the screen that covers two-sided filter screen structure in figure.
Fig. 2 is perspective view, two-sided filter screen structure 1 of the present invention is shown how installs projecting apparatus buckle-type.As seen from the figure, the holding section on the frame of the holding section on the housing of projecting apparatus and two-sided filter screen structure engages, and two-sided filter screen structure is fixedly mounted on housing.Fig. 3 is the partial view from Fig. 1 intercepting, and the state after two-sided filter screen structure is installed is shown.
The total structure of the two-sided filter screen structure 1 of first embodiment of the invention can be referring to Fig. 4,5 and 6, and screen pack 10A and 10B are fixed in support 20 from both sides, forms two-sided filter screen structure 1.More specifically, Fig. 8 illustrates the filter screen stand 20 of first embodiment of the invention, is clearly shown that the structure of its each several part and the position that distributes; In addition, Fig. 9-11 are respectively the local enlarged perspective that alignment pin 23, stay hook 24 and fixed leg 25 are shown.
As shown in the figure, two-sided filter screen structure 1 comprises screen pack 10A and 10B and filter screen stand 20.Described filter screen stand 20 is basically rectangular, be used for to support and fixing screen pack, comprising: frame 21; Intermediate support bar 22; Alignment pin 23; Stay hook 24; With fixed leg 25.Described screen pack 10A and 10B have the pin-and-hole 11 that passes for alignment pin 23 and be used for that fixed leg 25 passes post hole 12.
The shape and size of the pin-and-hole 11 of screen pack 10A and 10B and the shape and size of alignment pin 23 match, to be fixed and to seal.
Referring to Fig. 8 and 10, stay hook 24 stretches out to the center from frame 21, a plurality of stay hooks of every side distribute along frame at certain intervals, to control the peripheral part of screen pack 10A and 10B, make screen pack 10A and the 10B can perk and the peripheral part support 20 that can not come off laterally.The square bar shaped that is shaped as the extension from frame to the center of stay hook shown in figure 24 is parallel to screen pack.The shape of stay hook shown in figure 24 is only example, those skilled in the art can be according to the shape of actual design stay hook 24, for example whole curved, cylindrical, be perhaps the combination of various shape, as long as can realize its this effect of controlled filter net peripheral part.The quantity of stay hook 24 and interval are specifically designed according to the size of support 20.
Referring to Fig. 8 and 11, a plurality of fixed legs 25 are positioned on intermediate support bar 22, are distributed in the mid portion of support 20, and screen pack is positioned again, prevent that screen pack from coming off.As shown in the figure, the lateral dimension of the head of fixed leg 25 is greater than the lateral dimension of its end portion, and this end portion is square column.Correspondingly, be positioned at the post hole 12 of screen pack of both sides for square, the radial dimension in these posts hole 12 is less than the lateral dimension of the head of fixed leg 25, but the flexibility due to screen pack self, fixed leg can be inserted in by the head of fixed leg in post hole 12, the size and dimension in post hole 12 can coincide with the fixing end portion of pillar 25 post hole 12, and square being conducive to that be shaped as of end portion positions and fix screen pack.Thus, a plurality of fixed legs 25 that distribute at the mid portion of support 20 not only make screen pack be fixed in the horizontal direction, and also are fixed in the vertical direction, thereby make screen pack firmly be located and fix at three-dimensional.
That the lateral dimension of its head is greater than the lateral dimension of end portion, and greater than the radial dimension in the post hole of screen pack, with location on three-dimensional and fixing screen pack to the basic demand of fixed leg 25.Under this basic demand, those skilled in the art can design the shape and size of fixed leg according to actual needs, and for example preferably end portion is square, but also can be designed to ellipse or other combined shaped.The quantity of fixed leg 25 and interval are specifically designed according to the size of support 20.
In working order, the screen pack of one side of two-sided filter screen structure 1 is as being subject to the pressure of gas, the screen pack of opposite side can be subject to the pulling force of gas, after as mentioned above screen pack 10A and 10B being fixed, screen pack 10A and 10B are under tensions or are under pressure and can cause the screen pack filter effect bad, also can not cause screen pack to come off from support.
As shown in Figure 8, stay hook 24 and the fixed leg 25 in both sides of support 20 stagger respectively, like this can be in the situation that have requirement to prevent simply the screen pack wrongly installed to the installation side of screen pack.The pin-and-hole 11 of screen pack 10A and 10B and post hole, corresponding with steady pin 23 and fixed leg 25 respectively, therefore stagger and when having any different, can prevent screen pack 10A and 10B wrongly installed when the fixed leg 25 of both sides, thereby satisfy at homonymy not in easy mode, the requirement of different screen packs being set.In addition, because two-sided filter screen structure 1 has screen pack in two sided, in the situation that the hole correspondingly staggers, thereby can avoid as far as possible causing possible filtration to omit because of the perforate of screen pack, thereby can make two-sided filter screen structure 1 have better filter effect.
In the present embodiment, two-sided filter screen structure 1 adopts two- layer screen pack 10A and 10B, but is noted that the quantity of screen pack can come to determine as required, be at least two-layer, also can be more than two-layer, for example three layers, four layers or more.In the situation that more than two-layer, come as required to determine in the quantity of each side.Fig. 7 is distortion embodiment illustrated in fig. 6, and this variant embodiment has three layer filtration net 10A, 10B and 10C, and screen pack 10A and 10C stack together.
The material of support 20 can be selected according to the concrete condition of electronic instrument, for example resin, plastics or aluminium alloy etc.Preferably by the molded support 20 of making.
Figure 12 and 13 illustrates the second embodiment of two-sided filter screen structure of the present invention.For simplicity's sake, only illustrate and the difference part of the first embodiment at this, other and the same or similar content of the first embodiment are omitted.
Compare with the first embodiment, the second embodiment utilizes profile 26 and fastens buckle portion 27 and replaces most fixed legs 25 and stay hook 24.A plurality of profiles 26 are distributed in two horizontal frames spaced reciprocally, correspondingly, are distributed with the bolt buckle portion 27 identical with profile 26 quantity on intermediate support bar 22.Also remain with stay hook 24 on two vertical frames of support 21, in addition, also keeping respectively a fixed leg 25 that is positioned on intermediate support bar 22 near two vertical frame places.Because profile 26 has covered enough length, thereby can replace most fixed legs and stay hook in the first embodiment.
In the present embodiment, be a kind of preferred fixed form of the present embodiment at two vertical frame place's reservation minority stay hooks and fixed leg, obviously, can and fasten buckle portion 27 with profile 26 and replace all stay hooks and fixed leg fully.
The beginning of the buckle portion of bolt shown in figure 27 is cylindrical, has the hole that coordinates with it in the end of profile 26.The shape and size of the fixing hole on screen pack and bolt buckle portion are coincide, to reach good filter effect.The shape of the bolt buckle portion 27 in this embodiment and profile 26 shapes, size and quantity and fixing hole is only example, and those skilled in the art can design as the case may be in specific design, can realize that fixedly the effect of screen pack gets final product.
In a second embodiment, the position of the fastening part of both sides can be set to asymmetric, namely illustrates in this way in Figure 13.The existence of the difference of the position of the fastening part of both sides also obtain with the first embodiment in identical technique effect.
Figure 14 and 15 illustrates the 3rd embodiment of two-sided filter screen structure of the present invention.For simplicity's sake, only illustrate and the difference part of the first embodiment at this, other and the same or similar content of the first embodiment are omitted.
Compare with the first embodiment, the 3rd embodiment utilizes press strip 28 to replace fixed leg 25 fully, and has replaced most of stay hook 24, has only kept the minority stay hook on two horizontal frames so that two-sided filter screen structure 1 has better fixing and filter effect.The two ends of press strip 28 are connected across respectively on frame 21, be integrated with frame 21, horizontal and vertical press strip intersects mutually, preferred mutually vertical, and horizontal and vertical press strip will reserve after intersection mutually and is convenient to screen pack 10A and 10B are placed into space between press strip 28 and intermediate support bar 22.Flexibility according to screen pack 10A and 10B have can be placed into screen pack 10A and 10B between press strip 28 and intermediate support bar 22, and make the pin-and-hole 11 of four jiaos of screen packs correspondingly be inserted in steady pin 23.In the situation that can satisfy fixing and filter effect, press strip 28 self also can have certain elasticity, so also is of value to and places more easily screen pack.
In the present embodiment, having kept minority stay hook 24 on two horizontal frames is a kind of preferred fixed forms of the present embodiment, and obviously, in the situation that satisfy fixing and the filter effect requirement, other embodiment can be cancelled these stay hooks.
In the 3rd embodiment, the position of the fastening part of both sides can be set to asymmetric, the existence of the difference of the position of the fastening part of both sides also can obtain with the first embodiment in similar technique effect.
The first to the 3rd embodiment of the present invention described above and relevant distortion embodiment are noted that also embodiment described above and distortion embodiment thereof only are used for design of the present invention is described, do not show that the present invention only can be to implement with upper type.Each embodiment described above and distortion embodiment thereof are not to isolate, their each feature can make up as required, for example, can adopt alignment pin, stay hook and the such buckle part of fixed leg in a side of two-sided filter screen structure, adopt profile and such buckle part or the employing press strip of bolt buckle portion at opposite side.More broadly, can be combined according to actual needs on two-sided filter screen structure with this class buckle part of alignment pin, stay hook and fixed leg, profile and this class buckle part of bolt buckle portion and this class buckle part of press strip.
Referring to Figure 16 A, 16B and 16C, its diagram is concatenated two two-sided filter screen structures 1 by hinge portion again, thereby two two-sided filter screen structures 1 can stack together.Utilize so two-sided filter screen structure assembly 2, can change longitudinal size and the filter course quantity of filter screen structure on the one hand, thereby can obtain easily the filter screen structure of multiple filtration (at least four layers).On the other hand, two-sided filter screen structure assembly 2 can obtain large-area two-sided filter screen structure when launching, and is convenient to packing, transportation and the storage of two-sided filter screen structure after folding.
As required, can also be will utilize hinge portion to be concatenated more than two two-sided filter screen structures 1 with mode like above-mentioned two-sided filter screen structure component class, thus form the assembly with more two-sided filter screen structures 1.
Above embodiment to two-sided filter screen structure of the present invention is illustrated, as mentioned above, carry out specific design for the effect of feature that the specific features of two-sided filter screen structure of the present invention such as shape, size and position can above-mentioned disclosures, these designs are all that those skilled in the art can realize.In addition, those skilled in the art can also make up and change the feature of the various embodiments of above-mentioned disclosure, to realize the present invention's purpose.
Claims (14)
1. two-sided filter screen structure, be used for the ventilation of electronic instrument and prevent dust, comprise a filter screen stand and at least two screen packs, described filter screen stand is an independent support part, comprise integrated frame and intermediate support bar, the both sides of described filter screen stand include the buckle part that is used for withholding described screen pack that is integrally formed on this filter screen stand, described screen pack is installed from two outsides of described filter screen stand respectively, be fixed on the both sides of described filter screen stand with the buckle form by described buckle part, and described intermediate support bar makes the screen pack that is positioned at both sides spaced apart.
2. two-sided filter screen structure as claimed in claim 1, wherein, the described buckle of each side of described filter screen stand partly includes a plurality of alignment pins, described a plurality of alignment pin is the cylinder that intersects with screen pack, be spaced apart from each other, the inwall of contiguous described frame also forms with described frame, and described a plurality of alignment pins pass respectively the pin-and-hole that is positioned at the screen pack periphery, thereby screen pack is positioned and fixes.
3. two-sided filter screen structure as claimed in claim 2, wherein, described alignment pin is cylinder, described pin-and-hole is circular hole.
4. two-sided filter screen structure as claimed in claim 2, wherein, described buckle part also comprises a plurality of from described frame to the outstanding stay hook in filter screen stand center, is used for the surrounding of screen pack is positioned.
5. two-sided filter screen structure as claimed in claim 1, wherein, described screen pack is sponge.
6. two-sided filter screen structure as claimed in claim 1, wherein, described screen pack is papery.
7. two-sided filter screen structure as claimed in claim 1, wherein, the position of buckle part that is arranged on filter screen stand one side is asymmetric with the position of the buckle part that is arranged on the filter screen stand opposite side, thus the screen pack that is installed on both sides can not exchange.
8. two-sided filter screen structure as claimed in claim 1, wherein, be installed on filter screen stand not the screen pack of homonymy that the position of fixing hole is set is not identical, with respectively with the clamping part of a corresponding side divide corresponding, thereby the screen pack that is installed on both sides can not exchange.
9. two-sided filter screen structure as described in any one in claim 1-8, wherein, described buckle part also comprises a plurality of fixed legs, this fixed leg has the head projection, the lateral dimension of this head projection is greater than the lateral dimension of the end portion of fixed leg, and the lateral dimension of this head projection is greater than the radial dimension in the post hole in screen pack, and a plurality of described post hole in screen pack can be passed respectively the head projection of described a plurality of fixed legs and be inserted in described a plurality of fixed leg.
10. two-sided filter screen structure as claimed in claim 9, wherein, the end portion that is positioned at the head projection of described fixed leg is cuboid, described post hole is square hole.
11. two-sided filter screen structure as described in any one in claim 1-8, wherein, described buckle part also comprises a plurality of cross one another press strips, and the two ends of these press strips are positioned at the frame of filter screen stand, are snapped in respectively between these press strips and described intermediate support bar with the screen pack with both sides.
12. two-sided filter screen structure as described in any one in claim 1-8, wherein, described buckle part also comprises a plurality of from described frame to the outstanding profile in filter screen stand center, described profile is flexible, and these profiles are fastened and are buckled together with the buckle portion of fastening that is positioned on described intermediate support bar after clamping screen pack.
13. a two-sided filter screen structure assembly comprises at least two two-sided filter screen structures as described in any one in claim 1-12, these two-sided filter screen structures utilize hinge fraction to be concatenated, thereby these filter screen structures can be superimposed together.
14. a projecting apparatus comprises two-sided filter screen structure as described in any one in claim 1-12 or two-sided filter screen structure assembly as claimed in claim 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110369277.8A CN103120875B (en) | 2011-11-18 | 2011-11-18 | Bifacial filter screen structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110369277.8A CN103120875B (en) | 2011-11-18 | 2011-11-18 | Bifacial filter screen structure |
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| CN103120875A true CN103120875A (en) | 2013-05-29 |
| CN103120875B CN103120875B (en) | 2016-03-30 |
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| CN201110369277.8A Expired - Fee Related CN103120875B (en) | 2011-11-18 | 2011-11-18 | Bifacial filter screen structure |
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| CN103768875A (en) * | 2013-06-17 | 2014-05-07 | 孟伊凡 | Rotary-type lampblack purifier and manufacture method of filter screen plate of rotary-type lampblack purifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103768875A (en) * | 2013-06-17 | 2014-05-07 | 孟伊凡 | Rotary-type lampblack purifier and manufacture method of filter screen plate of rotary-type lampblack purifier |
| CN103768875B (en) * | 2013-06-17 | 2015-06-17 | 孟伊凡 | Rotary-type lampblack purifier and manufacture method of filter screen plate of rotary-type lampblack purifier |
| CN106594846A (en) * | 2016-10-19 | 2017-04-26 | 珠海格力电器股份有限公司 | Electric heater and filter screen assembly thereof |
| CN106733579A (en) * | 2017-01-18 | 2017-05-31 | 江苏云腾高新科技有限公司 | A kind of PVC foam plate bucket with filtering function |
| CN109224681A (en) * | 2018-10-25 | 2019-01-18 | 中汽（天津）系统工程有限公司 | A kind of industrial air-conditioning coating cloud felt filter frame |
| WO2021135851A1 (en) * | 2019-12-31 | 2021-07-08 | 中影光峰激光影院技术（北京）有限公司 | Dustproof net module and projector thereof |
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|---|---|
| CN103120875B (en) | 2016-03-30 |
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