CN101332376A - Filter device and combination component of filter device - Google Patents
Filter device and combination component of filter device Download PDFInfo
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- CN101332376A CN101332376A CNA2008101317507A CN200810131750A CN101332376A CN 101332376 A CN101332376 A CN 101332376A CN A2008101317507 A CNA2008101317507 A CN A2008101317507A CN 200810131750 A CN200810131750 A CN 200810131750A CN 101332376 A CN101332376 A CN 101332376A
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- fluid
- filter
- filter cylinder
- stream
- attaching parts
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- Filtration Of Liquid (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention relates to a filter and a bonding part of the filter, measuring pressure difference between inflow pressure and outflow pressure of the filter cartridge without losing convenience of filter cartridge exchange operation. The filter device (1) comprises a filter head (2), a bonding part composed of an intermediate component (3) and a connection component (4), and a filter cartridge (5). The intermediate component (3) as inflow passage of fluid is equipped with an upper annular groove (312), a lower annular groove (313) and a through hole (314). The connection component (4) is equipped with an internal flow passage (44) as outflow passage of fluid. Overlooking in the inflow or outflow direction of the bonding part composed of the intermediate component(3) and the connection component(4), centering on a random flow passage in the inflow passage and the outflow passage, the other flow passages are arranged around. The upper annular groove (312) is equipped with an inflow pressure detection hole (318). The perforating hole (311) is equipped with an outflow pressure detection hole (316).
Description
Technical field
The present invention relates to a kind ofly in filtering the filter of fluid, detect the technology of fluid pressure with the pressure reduction of the fluid pressure that flows out from filter of inflow filter.
Background technology
In the past, installed respectively in the inflow side of machine oil element and outflow side and to show depressor, measured the pressure of inflow side and outflow side, and as everyone knows (for example: patent documentation 1) detected technology that screen pack stops up according to both pressure reduction.
Patent documentation 1:(Japan) spy opens flat 9-280032 communique
Summary of the invention
Yet, in filter,, just need suitably change new filter if filter is dirty.Therefore, carry out easily in order to make more changing jobs of screen pack, cartridge filter is widely used.
But in order to detect the pressure reduction of inflow side and outflow side, if for the structure shown in Figure 3 as patent documentation 1, when carrying out filter cylinder exchange work, must show the loading and unloading of depressor etc. at every turn, cartridge replacement work is cumbersome.
In addition, if be structure shown in Figure 3, just must append the structure of showing depressor in order to installation from one's body at filter cylinder as patent documentation 1.
Have again, if in order to the position that shows depressor or sensor etc. of detecting pressure reduction by predetermined fixed, when narrow space is installed filter, show that depressor or sensor etc. can expose and can't be accommodated fully.In addition, according to the difference of the cutting way (ネ ジ cuts り side) of screw, where uncertain cartridge filter is fixed on.For this reason, the depressor of installing on the cartridge filter sometimes that shows can be positioned at the position that can't see.
Therefore, purpose of the present invention is not for to lose the simplicity of filter cylinder exchange work, and can detect the feed pressure of filter cylinder and the pressure reduction of outflow pressure.
Another object of the present invention is the structure that does not change existing filter cylinder, and can detect the feed pressure of filter cylinder and the pressure reduction of outflow pressure.
Even a further object of the invention is at narrow space filter to be installed, sensor etc. can not become obstruction yet, thereby improve the free degree of being convenient to install.
In preferred embodiment, described bonded block 3,4 can also comprise differential pressure pickup 7, and this differential pressure pickup detects by fluid pressure in the pressure detecting hole 318 detected described inflow paths of described inflow path and the pressure reduction by the fluid pressure in the pressure detecting hole 316 detected described outflow pathway of described outflow pathway.
In preferred embodiment, described bonded block 3,4 can comprise intermediate member 3 and the attaching parts 4 that are provided with inserting hole 311.These attaching parts under the state of the inserting hole 311 that is inserted into described intermediate member 3, connect described filtering head 2 and described filter cylinder 5 for the inner drum that is provided with stream 44.
In preferred embodiment, when described attaching parts 4 were inserted into the inserting hole 311 of described intermediate member 3, described intermediate member 3 can be that rotate at the center with described attaching parts 4.
In preferred embodiment, the stream 44 of the inside of described attaching parts 4 is for to overlook 3,4 o'clock described center stream of described bonded block.These attaching parts can comprise circumferential groove 43 and through hole 45, when attaching parts are inserted into the inserting hole 311 of described intermediate member 3, relative with the peristome 315 in pressure detecting hole 316 on the inwall of the inserting hole 311 that is positioned at described intermediate member 3 to the position on, this circumferential groove 43 is set, and this through hole 45 makes described circumferential groove 43 be communicated with described internal flow path 44.
In preferred embodiment, the center stream 44 of described bonded block 3,4 can be described outflow pathway, around the center stream 44 of described bonded block 3,4 and the stream 312,314,313 of configuration can be described inflow path.
The bonded block 3 of the device of filter is installed based on the conduct of an embodiment of the invention, 4 be disposed in order to the filter cylinder 5 of removing the foreign matter that contains in the fluid and fluid is flowed into respect to described filter cylinder and the filtering head 2 that flows out between, and make the bonded block 3,4 of the filter of described filtering head and described filter cylinder combination.This bonded block comprises makes fluid flow into the inflow path of described filter cylinder 5 and make fluid flow out to the outflow pathway of described filtering head 2 from described filter cylinder 5 from described filtering head 2.From the inflow of the fluid of described inflow path and described outflow pathway or flow out direction when overlooking, any stream 44 with described inflow path and described outflow pathway is the center, all the other streams 312,314,313 dispose round this center stream 44, and be provided with pressure detecting hole 316,318 in order to the internal fluid pressure that detects described inflow path and described outflow pathway.
Description of drawings
Fig. 1 is the schematic diagram of filter 1 outward appearance of expression an embodiment of the present invention.
Fig. 2 is the A-A profile of the major part of filter 1.
Fig. 3 is the vertical view of intermediate member 3.
Fig. 4 is the stereogram of attaching parts 4.
Fig. 5 is the profile of attaching parts 4.
Fig. 6 is first variation.
Fig. 7 is second variation.
Fig. 8 is the 3rd variation.
Symbol description
1 filter
2 filtering heads
3 intermediate members
4 attaching parts
5 filter cylinders
7 differential pressure pickups
41 cylindrical portion
42 flanges
43 circumferential grooves
44 internal flow paths
45 through holes
46 peristomes
311 inserting holes
Endless groove on 312
313 times endless grooves
314 through holes
315 peristomes
316 outflow pressures detect the hole
317 peristomes
318 feed pressures detect the hole
319 endless grooves
The specific embodiment
Below, describe with reference to the filter of accompanying drawing an embodiment of the invention.
The filter 1 of present embodiment is in order to remove the filter of the foreign matter that contains in the fluid.For example, filter 1 is to automobile, and the foreign matter that contains in the fuel that devices such as building machinery or work mechanism use, the lubricated wet goods is removed.
Fig. 1 relates to the schematic diagram of outward appearance of the filter 1 of present embodiment for expression.
This filter 1 comprises the filter cylinder 5 that filters fluid, in order to the filtering head 2 of filter cylinder 5 to be installed, and the attaching parts 4 (see figure 2)s bonded block that constitute, that make filter cylinder 5 and filtering head 2 combinations of accommodating by intermediate member 3 and its inside.
The inside that filter cylinder 5 is included in the general cylindrical shape shell is (not shown in order to the filter that filters fluid.Below identical).Filter cylinder 5 can load and unload with respect to bonded block that is made of intermediate member 3 and attaching parts 4 or filtering head 2.
In filter 1, filtration fluid as described below.The promptly outside fluid of supplying with flows into filtering head 2.The fluid that flows into filtering head 2 flows to filter cylinder 5 by intermediate member.Then, filter cylinder 5 filters fluid for removing the foreign matter that contains in the fluid.Filter fluid afterwards by filter cylinder 5, return filtering head 2 by intermediate member 3, and flow out to the outside.
Fig. 2 is the A-A profile of major part of the filter 1 of present embodiment.
As shown in the drawing, filtering head 2 comprise with so that the fluid that flows to from the outside flow into the inflow path 21 of filter cylinder 5 and make outflow pathway 23 5 that discharge from filter cylinder, that fluid after filtering flows out to the outside.Also have, the flow direction of the fluid of this filter 1 also can be a rightabout.Liquid is flowed into, liquid is flowed out from the inflow path 21 of present embodiment.
Flowing into path 21 is communicated with the endless groove 22 of the joint portion that is located at attaching parts 4 and intermediate member 3.The last endless groove 312 of endless groove 22 and following intermediate member 3 constitutes ring-type stream 25 together.In addition, filtering head 2 is provided with the connecting portion 26 that is connected in order to attaching parts 4.
Fig. 3 is the vertical view that the intermediate member 3 of attaching parts 4 has been installed.Below, with reference to Fig. 2 and Fig. 3 middle parts 3 are described.
Central part at main part 31 is provided with in order to insert the inserting hole 311 of attaching parts 4.On main part 31 and below the outside of inserting hole 311, be respectively equipped with endless groove 312 and following endless groove 313 around inserting hole 311.And last endless groove 312 and following endless groove 313 are communicated with by several through holes 314.When overlooking intermediate member 3, through hole 314 is located on the coincidence position of endless groove 312 and following endless groove 313.
On the inwall of inserting hole 311, be provided with peristome 315, and be provided with outflow pressure detection hole 316 in order to the pressure (outflow pressure) that detects the fluid in the inserting hole 311.
In addition, on the inwall of last endless groove 312, be provided with peristome 317, and the feed pressure that is provided with in order to detect the fluid pressure (feed pressure) in the endless groove 312 detects hole 318.
In the present embodiment, main part 31 is hexagon when overlooking.But this shape also can be circle, is not limited to this.
In sensor portion 32, be provided with differential pressure pickup resettlement section 321, accommodate differential pressure pickup 7 in the inside of differential pressure pickup resettlement section 321.Outflow pressure detects hole 316 and feed pressure detection hole 318 extends to differential pressure pickup 7.Thus, differential pressure pickup 7 can detect the fluid pressure (outflow pressure) in the inserting hole 311 and the differential pressure of the fluid pressure (feed pressure) in the last endless groove 312 respectively.
Fig. 4 is the stereogram of attaching parts 4 that is inserted into the inserting hole 311 of intermediate member 3.Fig. 5 is the profile of attaching parts 4.With reference to Fig. 3 to Fig. 5, attaching parts 4 are described.
Attaching parts 4 comprise cylindrical portion 41, flange 42 that is provided with around cylindrical portion 41 and the circumferential groove 43 that is provided with on the surface of cylindrical portion 41.Be provided with fluid flowing path 44 in the inside of cylindrical portion 41.And cylindrical portion 41 comprises in order to be communicated with the through hole 45 of this stream 44 and circumferential groove 43.In circumferential groove 43, form the peristome 46 of through hole 45.
Here, as shown in Figure 2, will there be the major axis 48 of the attaching parts 4 of said structure to be inserted into the inserting hole 311 of intermediate member 3 from downside.Thus, flange 42 is from following side bearing intermediate member 3.In this case, the connecting portion 26 of the front end of the major axis 48 of attaching parts 4 and filtering head 2 is connected.For example, the front end of the major axis 48 of attaching parts 4 is provided with threaded portion B, can screw togather with the connecting portion 26 of filtering head 2.
For example, in the connecting portion 26 of the front end of the major axis 48 of attaching parts 4 and filtering head 2, cutting is internal thread and external screw thread in advance respectively.Then, both are screwed togather and operation sequence when connecting is exemplified below.
At first, attaching parts 4 are inserted the inserting hole 311 of intermediate member 3 from downside.Then, a little is inserted into the connecting portion 26 of filtering head 2 with the front end of connecting portion 4, and screw thread does not screw togather fully, but attaching parts 4 become fastening state by screw thread.At this moment, intermediate member 3 is in by the flange 42 of attaching parts 4 state supported from the below, can be that rotate at the center with attaching parts 4.Therefore, in this case, the operator is screwed on the connecting portion 26 of filtering head 2 front end of attaching parts 4 after the preferred orientations of the orientation that has determined intermediate member 3 with being completely fixed.
In addition, in said procedure, as after filtering head 2 is engaged attaching parts 4, the alternative of decision intermediate member 3 orientations, the operator can be predetermined the orientation of attaching parts 4 with the intermediate member 3 of insertion, be fixed at intermediate member under the situation of this direction, attaching parts 4 relative filtering heads 2 are screwed togather.
No matter in which kind of situation, if tighten the screw thread of attaching parts 4, intermediate member 3 is clamped between filtering head 2 and the attaching parts 4, and intermediate member 3 can not be fixed rotationally.
Thus, even when in for example narrow engine room, accommodating the filter of present embodiment, also have the very big free degree, make to accommodate and become possibility.
Also have, be inserted at the major axis 48 of attaching parts 4 under the situation of inserting hole 311 of intermediate member 3, the minor axis 49 of attaching parts 4 is connected with filter cylinder 5.For example, the front end of the minor axis 49 of attaching parts 4 is provided with threaded portion B, can screw togather with the connecting portion 51 of filter cylinder 5.
As Fig. 2 and shown in Figure 3, when attaching parts 4 are inserted the inserting hole 311 of intermediate members 3, the peristome 315 that the outflow pressure of the circumferential groove 43 of attaching parts 4 and inserting hole 311 inner surfaces detects hole 316 be in relative to the position.Thus, the outflow pressure of the stream 44 of attaching parts 4 inside, through hole 45, circumferential groove 43 and intermediate member 3 detects hole 316 for being communicated with.Outflow pressure detects the inside that hole 316 extends to differential pressure pickup 7.
Here, owing on the cylindrical portion 41 of attaching parts 4, be provided with round cylinder slot 43, even the location inaccuracy of the peristome 315 in the outflow pressure of intermediate member 3 detection hole 316 and the through hole 45 of attaching parts 4 also can be passed through the pressure that differential pressure pickup 7 obtains the internal flow path 44 of attaching parts 4.Be the outflow pressure of intermediate member 3 detect hole 316 peristome 315 if for relative with circumferential groove to the position, circumferencial direction is not depended in the position of this peristome 315.Its result, the direction of intermediate member 3 can be the rotation that freely stipulate at the center with inserting hole 311.
In the present embodiment, the orientation of intermediate member 3 can freely be determined at 360 degree, but the scope that also can limit desirable direction as described below.For example, Fig. 6 is the vertical view of the attaching parts 4 of the 1st variation.In this variation, as shown in the drawing, not the circumferential groove 43 that attaching parts 4 are set in the whole circumference of cylindrical portion 41, but only in the scope of the central angle of stipulating (is θ at this), be provided with.So, intermediate member 3 is freely determined direction in the scope at heart angle therein.
And, in the present embodiment, though intermediate member 3 get 360 the degree on any direction the time, differential pressure pickup 7 can detect pressure reduction.But in the time of also can be for any one direction in predetermined several directions of orientation only, differential pressure pickup 7 can detect pressure reduction.For example, Fig. 7 is the vertical view of the attaching parts 4 of second variation.In this variation, as shown in the drawing, cylindrical portion 41 is not established circumferential groove 43, and is provided with several through holes 45.In this case, when the attaching parts 4 of this variation being inserted after the inserting hole 311 of intermediate members 3, can regulate circumferencial direction the position so that the peristome 315 of the peristome of any one through hole 45 and inserting hole 311 become relative to the position.For example, the deep-seated that attaching parts 4 are tightened to filtering head 2 is put and when connecting, and the formation starting position of screw thread that can determine filtering head 2 and attaching parts 4 is so that the position of this circumferencial direction becomes suitable position.
In addition, in the present embodiment, be provided with circumferential groove 43 on the cylindrical portion 41 of attaching parts 4, making intermediate member 3 is that the center can be rotated with inserting hole 311.Mode as an alternative also can be provided with circumferential groove in the position of the peristome 315 of the inwall of the inserting hole 311 of intermediate member 3.For example, Fig. 8 is for adopting intermediate member 3 and the attaching parts 4 that relate to the 3rd variation, and attaching parts 4 are inserted the profile after the inserting hole 311.As shown in the drawing, the intermediate member 3 of this variation is at the inwall of inserting hole 311, promptly relative with the through hole 45 of attaching parts 4 to the position be provided with circumferential groove 391.Circumferential groove 319 detects hole 316 with outflow pressure and is communicated with.Therefore, in this variation, intermediate member 3 also can freely rotate on 360 degree.
Here, adopt Fig. 2 that the mobile of the fluid in the filter 1 described.
At first, the fluid that flows into the inflow path 21 of filtering head 2 from the outside flow to the endless groove 22 of filtering head 2 and the ring-type stream 25 that forms by the last endless groove 312 of middle section 3.In intermediate member 3, last endless groove 312, through hole 314, and endless groove 313 becomes the inflow path down.The fluid that flows to ring-type stream 25 passes through intermediate member 3 through this inflow path.Relative with the following endless groove 313 of intermediate member 3 to the position on be provided with the fluid intake 52 of filter cylinder 5.Fluid flows into the filter cylinder 5 from this fluid intake 52.
The fluid that is filtered by the filter in the filter cylinder 5 flows out from the fluid issuing 53 of the connecting portion 51 that is located at filter cylinder 5.In the bonded block that is formed by intermediate member 3 and attaching parts 4, the internal flow path 44 of attaching parts 4 is an outflow pathway.The fluid that flows out from filter cylinder 5 flows out to filtering head 2 through this outflow pathway, flows out to the outside by outflow pathway 23 again.
At this moment, do not flow into filter cylinder 5 fluids as yet and flow to the feed pressure detection hole 318 that is communicated with the last endless groove 312 of intermediate member 3 from peristome 317.Therefore, differential pressure pickup 7 is according to detecting the fluid that hole 318 flows to from feed pressure, and test fluid flows into the pressure before the filter cylinder 5.
On the other hand, such as already described, because detecting hole 316 with outflow pressure, the internal flow path 44 of attaching parts 4 is communicated with, so, from the fluid inflow and outflow pressure detecting hole 316 that filter cylinder 5 flows out.Therefore, differential pressure pickup 7 is according to detecting the fluid that hole 316 flows into from outflow pressure, detects the pressure of the fluid that flows out from filter cylinder 5.
Consequently differential pressure pickup 7 can detect the fluid that will flow into filter cylinder 5 and the pressure reduction of the fluid that flows out from filter cylinder 5.
Utilize differential pressure pickup 7,, can detect the dirty degree of the filter in the filter cylinder 5 by to measuring with respect to the feed pressure of the fluid of filter cylinder 5 and the pressure reduction of outflow pressure.Promptly along with filter is collected foreign matter, the pressure reduction between feed pressure and the outflow pressure rises gradually.Therefore, preestablish the threshold value of a regulation, when pressure reduction was bigger than this threshold value, filter 1 can be exported the signal of urging exchange filter cylinder 5.
Thus, not the running time of as in the past, installing according to automobile or building machinery etc., the exchange period of unified regulation filter cylinder, but can determine suitable exchange period according to the dirty degree of each filter cylinder.
Above-mentioned embodiments of the present invention are in order to example of the present invention to be described, are not only with these embodiments the scope of the invention to be limited.Those of ordinary skill in the art only otherwise break away from main idea of the present invention can adopt variety of way to implement the present invention.
For example, in the present embodiment, the bonded block that makes filtering head and filter cylinder combination is what be made of intermediate member and two parts of attaching parts.But also can be such structure.For example, bonded block is single parts, for filtering head, can fix or the method for attachment of regulation such as bolting connects with screw.
Claims (7)
1. a filter is characterized in that, comprising:
In order to the filter cylinder (5) of removing the foreign matter that contains in the fluid,
Make fluid flow into described filter cylinder (5) and make the filtering head (2) of its outflow,
And bonded block (3,4), this bonded block is provided with from described filtering head (2) and flows into inflow path that the fluid of described filter cylinder (5) flows and flow out to the outflow pathway that the fluid of described filtering head (2) flows from described filter cylinder (5), and, this bonded block is configured between described filtering head (2) and the described filter cylinder (5), make described filtering head (2) and described filter cylinder (5) combination
Described bonded block (3,4) from the inflow of the fluid of described inflow path and described outflow pathway or flow out direction when overlooking, with any stream (44) in described inflow path and the described outflow pathway is the center, remaining stream (312,314,313), and be provided with pressure detecting hole (316,318) in order to the fluid pressure of the inside of detecting described inflow path and outflow pathway round the stream (44) at this center and dispose.
2. filter according to claim 1, it is characterized in that: described bonded block (3,4) also comprise differential pressure pickup (7), this differential pressure pickup detects by fluid pressure in the detected described inflow path in the pressure detecting hole (318) of described inflow path and the pressure reduction by the fluid pressure in the detected described outflow pathway in pressure detecting hole (316) of described outflow pathway.
3. filter according to claim 1 and 2 is characterized in that: described bonded block (3,4) comprises intermediate member (3) and attaching parts (4),
This intermediate member (3) is provided with inserting hole (311),
These attaching parts are the drum that inside is provided with stream (44), under the state of the inserting hole that is inserted into described intermediate member (3) (311), connect described filtering head (2) and described filter cylinder (5).
4. filter according to claim 3 is characterized in that: when described attaching parts (4) were inserted into the inserting hole (311) of described intermediate member (3), described intermediate member (3) can be that rotate at the center with described attaching parts (4).
5. according to claim 3 or 4 described filters: it is characterized in that: the stream at the described center of the stream (44) of the inside of described attaching parts (4) when overlooking described bonded block (3,4), have circumferential groove (43) and through hole (45),
When described attaching parts (4) are inserted into the inserting hole (311) of described intermediate member (3), relative with peristome (315) on the inserting hole that is positioned at described intermediate member (3) (311) inwall, described pressure detecting hole (316) to the position be provided with this circumferential groove (43)
This through hole (45) makes described circumferential groove (43) be communicated with described internal flow path (44).
6. according to each described filter in the claim 1 to 5, it is characterized in that: described bonded block (3, the stream at center 4) (44) is described outflow pathway, around described bonded block (3, the stream at center 4) (44) and the stream (312 that is provided with, 314,313) be described inflow path.
7. the bonded block (3 of a filter, 4), for be configured in order to the filter cylinder (5) of removing the foreign matter that contains in the fluid and fluid is flowed into respect to described filter cylinder and the filtering head (2) that flows out between, make the bonded block (3 of the filter of described filtering head and described filter cylinder combination, 4), it is characterized in that:
Have and make fluid flow into the inflow path of described filter cylinder (5) and make fluid flow out to the outflow pathway of described filtering head (2) from described filter cylinder (5) from described filtering head (2),
Flowing into from the fluid of described inflow path and described outflow pathway or flowing out direction when overlooking, with arbitrary the stream (44) in described inflow path and the described outflow pathway is the center, remaining stream (312,314,313) around the stream (44) at this center and dispose, and this bonded block is provided with the pressure detecting hole (316,318) in order to the internal fluid pressure that detects described inflow path and described outflow pathway.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP170699/07 | 2007-06-28 | ||
| JP2007170699A JP2009006276A (en) | 2007-06-28 | 2007-06-28 | Filter device and connecting member of filter device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101332376A true CN101332376A (en) | 2008-12-31 |
| CN101332376B CN101332376B (en) | 2011-12-07 |
Family
ID=40195416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101317507A Expired - Fee Related CN101332376B (en) | 2007-06-28 | 2008-06-27 | Filter device and combination component of filter device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2009006276A (en) |
| CN (1) | CN101332376B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111107922A (en) * | 2017-11-17 | 2020-05-05 | 雅玛信过滤器株式会社 | Filter device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102311194B1 (en) * | 2019-10-29 | 2021-10-13 | 주식회사 베터라이프 | Ventilation system for indoor radon reduction |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3920553A (en) * | 1974-06-27 | 1975-11-18 | Amf Inc | Positioning device for filter cartridge assembly |
| EP1116938A1 (en) * | 2000-01-11 | 2001-07-18 | Aqua S.r.l. | Multifunctional filter for waterworks with pressure and flow rate sensors |
-
2007
- 2007-06-28 JP JP2007170699A patent/JP2009006276A/en active Pending
-
2008
- 2008-06-27 CN CN2008101317507A patent/CN101332376B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111107922A (en) * | 2017-11-17 | 2020-05-05 | 雅玛信过滤器株式会社 | Filter device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101332376B (en) | 2011-12-07 |
| JP2009006276A (en) | 2009-01-15 |
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Granted publication date: 20111207 Termination date: 20130627 |