CN1683054A

CN1683054A - Filter and electric vacuum cleaner using the filter

Info

Publication number: CN1683054A
Application number: CN 200510055055
Authority: CN
Inventors: 黑木义贵; 野町哲治; 酒谷英明
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2004-03-30
Filing date: 2005-03-15
Publication date: 2005-10-19
Anticipated expiration: 2025-03-15
Also published as: CN1683054B

Abstract

The present invention provides an electric vacuum cleaner which can keep a strong suction force over a long period of time, and can reduce the maintenance of a dust collecting filter. This vacuum cleaner is equipped with a filter section (5) for collecting dust sucked by the electric fan (2), a dust removing means (12) which removes dust and dirt deposited to a filter section, and at the same time, is constituted in such a manner that a porous film (26) made of PTFE is arranged on the suction air upstream side surface. Dust and dirt are caught by the surface of the very fine porous film (26) made of PTFE, and also since the dust releasing property of the PTFE is favorable, deposited dust and dirt can be removed to an approximately satisfactory degree by simply applying a vibration of the filter section by using the dust removing means (12), and the suction force can be maintained over a long period of time.

Description

Filter and use the electric dust collector of this filter

Technical field

The present invention relates to a kind of filter, and a kind of electric dust collector that can in long-time, keep good dust suction performance of dust removal performance excellence.

Background technology

In general electric dust collector, the dust that sucks is captured (the meaning of catching by the dust-collecting filter that is located in the collection assembly of dust, down together), and make it to be deposited in the collection assembly of dust, then removed attached to the dust on the described dust-collecting filter by the dust arrester that carries out dedusting manually.

An example of the filter in such electric dust collector is, polytetrafluoroethylene (PTFE) (below call polytetrafluoroethylene (PTFE)) porous membrane is made " sandwich " shape (opening the 2002-273126 communique as the Japan Patent spy) by the aeration support unit that nonwoven constitutes.

But, in such filter, the tear-away property of adhering to/being deposited in the dust on the aeration support unit of surface one side that is in the polytetrafluoroethylstephanoporate stephanoporate film is very poor, the ventilation crushing will become very high in short time, so the user need utilize brush etc. to clear away or clear away by washing etc.

In addition, the filter screen part in the filter is made into collapsed shape, then is necessary each face of turning back of filter screen is cleared away, and produces the problem that cleaning operation that is maintenance are got up and bothered very much.In addition, the brush etc. of cleaning usefulness is difficult for reaching the bosom of the lowest point part of collapsed shape, be difficult for disposing fully attached to wherein dust, therefore can produce the problem that the dust suction performance very high, dust catcher that has on the surface of dust-collecting filter that dust accretions, mesh stop up, the ventilation crushing will become soon descends.

Summary of the invention

The present invention is intended to address the above problem, and its purpose is to provide a kind of can guarantee for a long time that good dust separation and aeration can alleviate the filter of maintenance workloads such as washing and the electric dust collector that can keep good dust suction performance for a long time simultaneously.

In order to solve the above-mentioned problems in the prior art, the present invention has adopted following structure, promptly, on the face that is in upstream one side on the dust-absorbing airflow flow direction, be provided with the porous membrane that constitutes by polytetrafluoroethylene (PTFE) in the matrix, described matrix and described porous membrane are made collapsed shape, and the crest portion of one side of the porous membrane in the described collapsed shape is covered by resin coating.The porous membrane that constitutes by polytetrafluoroethylene (PTFE) by a side setting that in filter unit, on dust-absorbing airflow flows to, is in the upstream, dust is captured by the surperficial of very fine porous membrane that polytetrafluoroethylene (PTFE) constitutes, and the dust separation of this polytetrafluoroethylene (PTFE) is very good, only need just can dispose dust attached thereto basically to adding vibration on the filter, can in long-time, keep constant dust removal ability by dust arrester.In addition; since the user with now the same when using brush to carry out dedusting the easiest abrasive crest portion also covered with resin; the porous membrane that polytetrafluoroethylene (PTFE) is constituted can form protection, thereby can keep good capture performance and dust removal performance in long-time.

The technique effect that the present invention produces is as follows.Adopt the present invention according to, can provide a kind of can in long-time, keep good dust separation and maintenance operations such as excellent air permeability, washing simultaneously also the simple filtering device and a kind of can be in long-time the electric dust collector of the powerful dust removal ability of maintenance.

Below technical scheme of the present invention is summarized as follows.The 1st scheme of the present invention is, on the face that is in upstream one side on the dust-absorbing airflow flow direction, be provided with the porous membrane that constitutes by polytetrafluoroethylene (PTFE) in the matrix, described matrix and described porous membrane are made collapsed shape, and the crest portion of one side of the porous membrane in the described collapsed shape is covered by resin coating.The porous membrane that constitutes by polytetrafluoroethylene (PTFE) by (the dust-absorbing airflow flow direction) upstream side setting at filter unit, dust is captured by the surperficial of very fine porous membrane that polytetrafluoroethylene (PTFE) constitutes, and the dust separation of this polytetrafluoroethylene (PTFE) is very good, only need just can dispose dust attached thereto basically to adding vibration on the filter, can in long-time, keep constant dust removal ability by dust arrester.In addition; since the user with now the same when using brush to carry out dedusting the easiest abrasive crest portion also covered with resin; the porous membrane that polytetrafluoroethylene (PTFE) is constituted can form protection, thereby can keep good capture performance and dust removal performance in long-time.

The 2nd scheme is, in above-mentioned the 1st scheme, cover collapsed shape the porous membrane side crest portion resin width and highly be set to 0.5mm～3mm.Because size suppresses very for a short time, reduce so can suppress the surface area of filter unit, prevent that the ventilation crushing of filter from rising, the porous membrane that polytetrafluoroethylene (PTFE) is constituted also can play protection, prevents that it is scratched.

The 3rd scheme is, is in the matrix on the face of upstream one side to be provided with the porous membrane that is made of polytetrafluoroethylene (PTFE) on dust-absorbing airflow flows to, and described matrix and this porous membrane are made collapsed shape, are provided with planar section in the lowest point part of described collapsed shape.Like this, the degree of depth of the lowest point part of collapsed shape will shoal, and dust can not be pressed in the depths, only by just making the dust attached to part depths, the lowest point be easy to come off to being applied with vibration on the filter unit, dust removing effects can improve, and dust removal ability also can be kept.In addition, after the degree of depth of the lowest point part shoaled, brush etc. also got at easily, can be disposing fully attached to dust wherein.

Be in above-mentioned the 3rd scheme, to be provided with width in the lowest point part of collapsed shape and to be at least 2mm or the above planar section of 2mm in the 4th scheme.Like this, be expected to reach with the 3rd scheme in same effect.

The 5th scheme is in above-mentioned the 3rd, 4 schemes, to be provided with the planar section that is formed by resin in the lowest point part of collapsed shape.Like this, because dust-absorbing airflow is worn only the lowest point part, dust can not be pressed in the depths of the lowest point part, so dust removal performance can correspondingly be improved.Simultaneously, the planar section ratio is easier to form, and the intensity of filter itself also can improve, and can prevent that filter is impaired by for example using dust arrester to knock when this part is carried out dedusting, and can improve service life.

The 6th scheme is that in above-mentioned the 1st～5 scheme, being located at the matrix that is in downstream one side in the porous membrane on dust-absorbing airflow flows to is nonwoven.Like this, the intensity of filter itself can be improved.

The 7th scheme is a kind of electric dust collector, it is characterized in that: the described filter of each of claim 1～6 is used as the filter of capture by the dust of electric fan suction.A kind of electric dust collector that can keep powerful dust-absorbing strength constantly in long-time, also can alleviate the maintenance workload of dust arrestment device that is dust-collecting filter like this, just can be provided.

The 8th scheme is that in above-mentioned the 7th scheme, described filter is arranged to the shape that leans forward, the upstream side that its top flows to than the close dust-absorbing airflow in bottom.Like this, come off easily attached to the dust in the filter unit, and the dust that comes off can drop on the place ahead, can not adhere again on the filter, dust removing effects can improve, and dust-absorbing strength also can be kept.

The 9th scheme is in above-mentioned the 7th, 8 schemes, also to be provided with the dust arrester that is used to remove attached to the dust on the described filter.Owing to the dust detachment of poly tetrafluoroethylene is very good, only needs to use the removing dust arrester that filter is added and vibrate the ground dust attached thereto that just can be satisfied in the main, thereby can in long-time, keep dust removal ability.

The 10th scheme is that in above-mentioned the 9th scheme, dust arrester has the mechanism that carries out dedusting by the surface of knocking a side opposite with the porous membrane of filter.Like this, owing to can drop on the place ahead attached to the dust in the filter unit, can not adhere again on the filter, dust removing effects can improve.In addition, because dust arrester is to carry out dedusting by knocking one side opposite with porous membrane in the filter unit, so dust arrester cause damage can not for the porous membrane be made of polytetrafluoroethylene (PTFE), thereby keep good capture performance and dust removal performance in can be for a long time in dust removal process.

The 11st scheme is a kind of electric dust collector, it is characterized in that: be used for capturing the filter unit of the dust that sucks by electric fan and dispose dust arrester, and the face that the dust-absorbing airflow of described filter unit flows to upstream one side is provided with the porous membrane that is made of polytetrafluoroethylene (PTFE) attached to the dust of described filter unit.Like this, the surface of the very fine porous membrane that dust will be made of polytetrafluoroethylene (PTFE) captures, and because the dust separation of polytetrafluoroethylene (PTFE) is very good, only need to use the removing dust arrester that filter is added to vibrate and just can basically dust attached thereto be disposed, thereby can in long-time, keep dust removal ability.

The 12nd scheme, dust arrester have by knocking the mechanism that a filter side opposite with porous membrane carried out dedusting.Like this, add at dust arrester and can not cause damage when shaking dedusting, thereby can in long-time, keep good capture performance and dust removal performance the porous membrane that constitutes by polytetrafluoroethylene (PTFE).

The 13rd scheme of the present invention is a kind of electric dust collector; it is characterized in that comprising the filter unit that is used to capture the dust that sucks by electric fan; be provided with the porous membrane that is made of polytetrafluoroethylene (PTFE) in the above-mentioned filter unit on the face that is in upstream one side on the dust-absorbing airflow flow direction, the upstream side of described porous membrane is provided with the high porous protection film of this porous membrane of strength ratio.Like this, because outside the aperture opening portion of porous membrane from porous protection film be exposed to, the good dust separation that porous membrane had can be not fully exerted, just can will dispose attached to its lip-deep dust by simple modes such as vibrations; Simultaneously, the porous protection film that is positioned at (the dust-absorbing airflow flow direction) upstream side of this porous membrane can play a protective role to porous membrane, prevents that the porous membrane of comparison fragility from sustaining damage, thereby can keep stable and good dust separation for a long time.And when the dust that can't remove in methods such as above-mentioned vibrations began to pile up, the user can pull down filter unit, is simply cleaned by modes such as washings.At this moment, owing to porous protection film plays a protective role to porous membrane, thus can prevent that porous membrane from sustaining damage, thus can in long-time, keep good performance.

The 14th scheme is that described filter unit is arranged to the shape that leans forward, the upstream side that its top is close more air-breathing than the bottom.Like this, when dust arrester etc. applied vibration, the dust that splits away off from porous membrane can not be stuck in the bottom of porous membrane, but can fall reliably, and the dust deciduous can be improved.

The 15th scheme is in above-mentioned the 13rd, 14 schemes, to be provided with by knocking the dust arrester that dedusting is carried out in side opposite with porous membrane in the filter.Like this, add at dust arrester and the porous membrane that is made of polytetrafluoroethylene (PTFE) to be sustained damage when shaking dedusting, thereby can in long-time, keep good capture performance and dust removal performance.

The 16th scheme is, in above-mentioned the 14th, 15 schemes, described porous protection film be arranged to porous membrane on be in upstream one side face fit tightly.Like this; be expected to prevent that dust from entering between the porous membrane and porous protection film that is made of polytetrafluoroethylene (PTFE), simultaneously, can provide protection the porous membrane that polytetrafluoroethylene (PTFE) constitutes; prevent its damaged, can in long-time, keep good capture performance and dust removal performance.

The 17th scheme is, in above-mentioned the 14th, 15 schemes, described porous protection film be arranged to porous membrane on be in upstream one side face keep certain interval.Like this, porous protection film can not hinder the dust separation of the excellence of the porous membrane that is made of polytetrafluoroethylene (PTFE), and dust removal performance can improve.

The 18th scheme is that the described filter unit in the 11st～17 above-mentioned scheme is made into collapsed shape.Like this, the surface area of filter unit can increase, and it is better that the dust arrestment performance can become.

The 19th scheme is, in the 13rd～17 above-mentioned scheme, filter unit is collapsed shape, and the part in the porous protection film is fixed on the porous membrane simultaneously.Like this; porous protection film can prevent with respect to the skew of porous membrane; simultaneously, even the user can not damage the porous membrane that is made of polytetrafluoroethylene (PTFE) with the present the same words of using brush to carry out dedusting yet, can in long-time, keep good capture performance and dust removal performance.

The 20th scheme is that the aperture opening size of the described porous protection film in the 13rd～19 scheme is 0.1～5mm.Like this, porous protection film can not cause the ventilation crushing to increase, and can play a protective role to the porous membrane that is made of polytetrafluoroethylene (PTFE).

The 21st scheme is that in the 11st～20 above-mentioned scheme, the downstream of porous membrane on dust-absorbing airflow flows to is provided with matrix.Like this, the intensity of filter itself is improved.

The 22nd scheme is a kind of filter; it is characterized in that: dust-absorbing airflow flows to the face that is in upstream one side and is provided with the porous membrane that polytetrafluoroethylene (PTFE) constitutes in the matrix, the porous protection film that this porous membrane of strength ratio is high be configured to described porous membrane in be in upstream one side face fit tightly.Like this; because the polytetrafluoroethylstephanoporate stephanoporate film is outside the little bore portion of porous protection film is exposed to; the dust separation of the excellence that the polytetrafluoroethylstephanoporate stephanoporate film has can play effective function; can dispose simply by modes such as vibrations attached to the dust in its surface; owing to be positioned at the porous protection film of (the dust-absorbing airflow flow direction) upstream side of this polytetrafluoroethylstephanoporate stephanoporate film the polytetrafluoroethylstephanoporate stephanoporate film has been played protective effect simultaneously; the polytetrafluoroethylstephanoporate stephanoporate film film that prevents the comparison fragility sustains damage; can in long-time, keep stable and good dust separation; thereby can solve the relatively more fragile problem of polytetrafluoroethylstephanoporate stephanoporate film, can in long-time, keep good dust separation.

The 23rd scheme is that in above-mentioned the 22nd scheme, described matrix and porous protection film are made collapsed shape.Like this, the surface area of filter is increased, improve the dust arrestment performance.

The 24th scheme is that in the 22nd or 23 above-mentioned schemes, the part in the porous protection film is fixed on the porous membrane that is collapsed shape.Like this; not only can prevent the skew of porous protection film with respect to porous membrane; simultaneously, the user also can protect the porous membrane that is made of polytetrafluoroethylene (PTFE) to avoid damage with now the same when using brush etc. to carry out dedusting, can keep good capture performance and dust removal performance in long-time.

The 25th scheme is a kind of filter; it is characterized in that following structure: on the face that is in upstream one side on the dust-absorbing airflow flow direction, be provided with the porous membrane that constitutes by polytetrafluoroethylene (PTFE) in the matrix; the upstream side of this porous membrane is provided with the high porous protection film of this porous membrane of strength ratio; this porous protection film is arranged to mounting or dismounting freely, outside described porous membrane is exposed to.Like this; because the polytetrafluoroethylstephanoporate stephanoporate film is positioned at the surface; the dust separation performance of the excellence that the polytetrafluoroethylstephanoporate stephanoporate film is had is enough effectively brought into play; just can dispose by simple modes such as vibrations attached to its lip-deep dust; simultaneously owing to the porous protection film that is positioned at (the dust-absorbing airflow flow direction) upstream side of this polytetrafluoroethylstephanoporate stephanoporate film can play a protective role to the polytetrafluoroethylstephanoporate stephanoporate film; the polytetrafluoroethylstephanoporate stephanoporate film that can prevent the comparison fragility sustains damage, and can keep stable and good dust separation in long-time.That is, not only can solve the problem of the comparison fragility that the polytetrafluoroethylstephanoporate stephanoporate film of dust separation excellence has, but also can in long-time, keep good dust separation.And when beginning to pile up by inexpungible dusts of mode such as vibrations, the user can also pull down porous protection film from the polytetrafluoroethylstephanoporate stephanoporate film, mode such as take that water cleans, and maintenance is got up very simple.

The 26th scheme is a kind of filter; it is characterized in that following structure: on the face that is in upstream one side on the dust-absorbing airflow flow direction, be provided with the porous membrane that constitutes by polytetrafluoroethylene (PTFE) in the matrix; the upstream side of this porous membrane is provided with the high porous protection film of this porous membrane of strength ratio; this porous protection film is arranged to open and close freely, outside described porous membrane is exposed to.Like this, with the same in above-mentioned the 25th scheme, not only can keep good dust separation in long-time, maintenance is got up simple, and porous protection film can open and close freely, install and remove freely, has the advantage of losing after can not pulling down.

The 27th scheme is a kind of filter; it is characterized in that following structure: on the face that is in upstream one side on the dust-absorbing airflow flow direction, be provided with the porous membrane that polytetrafluoroethylene (PTFE) constitutes in the matrix; the upstream side of this porous membrane is provided with the high porous protection film of this porous membrane of strength ratio; this porous protection film is arranged to slide freely, outside described porous membrane is exposed to.Like this, with the same in the last scheme, can keep good dust separation in not only long-time, maintenance is got up also simple, and porous protection film can open and close freely, install and remove freely, has the advantage of losing after can not pulling down.

The 28th scheme is, comprises in the arbitrary scheme in the above-mentioned the 25th～27: the filter element that is provided with matrix and porous membrane; With the protected location that is provided with porous protection film.

The 29th scheme is, in the arbitrary scheme in the above-mentioned the 25th～28, porous protection film be configured to and porous membrane on be between the face of upstream one side and leave the gap.Like this; fit tightly with the surface of porous membrane its situation about protecting is compared with the protection porous protection film; the surface of porous membrane will all be a polytetrafluoroethylmaterial material, can very well remove clean advantage with adhering to the lip-deep dust of porous membrane thereby have.

The 30th scheme is that in the arbitrary scheme in the above-mentioned the 25th～29, described matrix and porous membrane are made into collapsed shape.Like this, the surface area of filter is increased, improve the dust arrestment performance.

The 31st scheme is that in the arbitrary scheme in the above-mentioned the 22nd～30, the aperture opening on the described porous protection film is 0.1～5mm.Like this, porous protection film can not cause the ventilation crushing to increase, and can also the porous membrane that polytetrafluoroethylene (PTFE) constitutes be played a protective role simultaneously.

Description of drawings

Fig. 1 is the outside drawing of the electric dust collector among the present invention the 1st, the 4th and the 8th embodiment,

Fig. 2 is the side cross-sectional, view of collection assembly of dust wherein,

Fig. 3 is the side cross-sectional, view of dust arrester wherein,

Fig. 4 is the side cross-sectional, view of another kind of dust arrester,

Fig. 5 (a) is the front view of the filter among the present invention the 1st embodiment, and Fig. 5 (b) is the A-A sectional view, and Fig. 5 (c) is the sectional view after amplifying,

Fig. 6 (a) is the front view of the filter among the present invention the 2nd embodiment, and Fig. 6 (b) is the B-B sectional view,

Fig. 7 (a) is the front view of the filter among the present invention the 3rd embodiment, and Fig. 7 (b) is the C-C sectional view,

The front view that Fig. 8 (a) divides for the filter unit among the present invention the 4th, the 9th embodiment, Fig. 8 (b) is its sectional view, and Fig. 8 (c) is the front elevation after amplifying, and Fig. 8 (d) is the sectional view after amplifying,

Fig. 9 (a) is the partial side view of the filter unit among the present invention the 5th, the 10th the embodiment, the partial side view when Fig. 9 (b) opens for protected location wherein,

Figure 10 (a) is the partial side view of the filter unit among the present invention the 6th, the 11st the embodiment, the partial side view when Figure 10 (b) opens for protected location wherein,

Figure 11 (a) is the front view of the filter unit among the present invention the 7th, the 8th embodiment, and Figure 11 (b) is its sectional view, and Figure 11 (c) is the front elevation after amplifying, and Figure 11 (d) is the sectional view after amplifying.

In the above-mentioned accompanying drawing, 1 is the dust collector host body, and 2 is electric fan; 3 is collection assembly of dust, and 4 is the dust storage element, and 5 is filter unit; 5A is a filter element, and 5Aa is a frame parts, and 5B is a protected location; 5Bb is a framework, and 5Bc is a porous protection film, and 6 is dust arrester; 12 is dust arrester; 13 is thin dirt chamber, and 25 is matrix, and 26 is the polytetrafluoroethylstephanoporate stephanoporate film; 27 is nonwoven; 28 is resin, and 29 is width a, and 30 is height b; 31 is planar section c; 32 is resin planar section d, and 37 is porous protection film, and 39 is frame parts.

The specific embodiment

Embodiments of the invention are described with reference to the accompanying drawings.Need to prove that such embodiment does not have the qualification effect for technical scope of the present invention.

(embodiment 1)

As shown in fig. 1, be provided with the electric fan 2 that produces dust-absorbing airflow and detachable freely collection assembly of dust 3 in the main body 1 of electric dust collector, be provided with and be used for capturing the dust arrestment unit of the dust that (meaning of catching, down with) be inhaled into that is filter unit 5 in the described collection assembly of dust 3 and be used to store the dust storage element 4 of dust.In addition, 6 for being used to remove the dust arrester by dust attached thereto after described filter unit 5 captures firmly, and 7 for being used for the cord-reel of rolling power line.8 for being used to attract the suction nozzle of dust, and this suction nozzle 8 is installed on the extension pipe 9, and extension pipe 9 partly divides 10 to connect mutually with main body 1 with flexible pipe 11 by handle again.

Dust that sucks from suction nozzle 8 and dust-absorbing airflow pass together extension pipe 9, handle partly divide 10 and flexible pipe 11 be admitted to the collection assembly of dust 3 in the main body 1, dust wherein is by filter unit 5 catching in addition.Yet such dust can little by little be piled up, and the mesh obstruction of filter unit 5 is lived, and the air quantity of suction will descend.But, by termly or when the detection dust is blocked the state of mesh dust arrester 6 being operated, disposed effectively attached to the device etc. that the dust on the filter unit 5 just can be by vibration/shock/scan out or wipe back and forth, the dust of these dedustings/clean is piled up in dust storage element 4.Like this, the air quantity of suction will be restored, thereby can keep initial dust removal ability.

The schematic configuration of the collection assembly of dust in the dust catcher of the present invention has been shown among Fig. 2.Wherein, in filter unit 5, the upstream side on dust-absorbing airflow flows to is provided with thick dirt filter screen (not shown).The dust that is drawn in the collection assembly of dust 3 at first carries out thick dirt separation/capture by this thick dirt filter screen, and these dusts that separate/trap are stored in dust (thick dirt) storage element 4; The thin dirt that passes thick dirt filter screen is then captured by filter unit 5.The downstream that flows at the dust-absorbing airflow of filter unit 5 is provided with dust arrester 12, and is provided with the top that dust arrester 12 roughly is in dust arrester 12.Dust arrester 12 cleans the filtering surface of filter unit 5 and thick dirt filter screen termly or carry out work when the state that the mesh that detects filter unit 5 take place to stop up.Because thick dirt filter screen is located at (the dust-absorbing airflow direction) upstream of filter unit 5, so thick dirt will fall in the dust storage element 4, thin dirt then can fall in the thin dirt chamber 13.In addition, when 12 pairs of dust arresters carry out dedusting attached to the dust on the filter unit 5, described dust arrester 12 is that dedusting is carried out on the surface in the downstream that flows to of the face that passes from dust-absorbing airflow that is dust-absorbing airflow, dust is come off, and be easy to come off from the words dust that the face that dust-absorbing airflow passes carries out dust removal operation, so the dust removing effects of filter unit 5 is very high.

In addition, because dust arrester 12 is arranged on the dust-absorbing airflow of filter unit 5 and flows to the downstream and roughly be in its top, therefore even being eliminated the dust that gets off comes off from the back side of filter unit 5, can not fall into dust arrester 12 yet, therefore dust arrester 12 can not be subjected to effect of dust, and reliability is very high.

Combine by first union body 15 that is connected with dust arrester 12 with by knocking second union body 16 that operations such as filter unit 5 make it to vibrate between dust arrester 12 and the filter unit 5.First union body 15 and second union body, 16 tools are by such structure, that is, when assembling collection assembly of dust 3 or when installing to collection assembly of dust 3 main body 1 after main body 1 is pulled down once more, first union body 15 and second union body 16 will interlink.In addition, owing at the external surface peripheral of union body collection assembly of dust 3 has been carried out the aeroseal processing, be provided with cone angle again on airtight of dust collector host body 1 and collection assembly of dust 3, therefore, when collection assembly of dust 3 was installed and removed, air etc. can not leak; Even if when maintenance such as collection assembly of dust 3 being washed, dust arrester 12 also can not be affected, thereby can realize the structure that reliability is very high.

The operation of dust arrester 12 and electric fan 2 is controlled by control device 17.Particularly, control device 17 makes dust arrester 12 and electric fan 2 work/stop according to the operation indication that the user carries out operating means 18, simultaneously when electric fan 2 is started working, make one section official hour of dust arrester 12 work in stopping period or the course of work.

An example of dust arrester 12 has been shown among Fig. 3.Comprise in this dust arrester 12: core portion 19; Constitute the coiler part 20 in driven by power source; With the magnet 21 that occupies certain space in the magnetic circuit that is arranged in core portion 19.Magnet 21 forms one with the vibration transmission member that is first union body 15, and first union body 15 cushions elastomer that is spring 22 is bearing on the axle, and is mounted on this axle and can makes up-down vibration.When feeding mains supply or direct current pulse power source in the coiler part 20, will there be magnetic field to take place in the core portion 19, will produces magneticaction, the union body 15 of winning is vibrated on above-below direction magnet 21.Such vibration is delivered on the filter unit 5 through second union body 16, and described filter unit 5 is also vibrated on above-below direction, comes off thereby make attached to the dust on the described filter unit 5.

The another kind of example of dust arrester 12 has been shown among Fig. 4.Used the electromagnet principle in this dust arrester 12, comprising: the solenoid part 23 that constitutes the driven by power source; Constitute the axle 24 of moving body; With the elastomeric spring 25 of formation.The transferring elements that is in the place ahead of axle 24 is that first union body 15 links by spring 25 and axle 24.When being passed into mains supply or direct current pulse power source in the solenoid part 23, axle 24 will vibrate on fore-and-aft direction, such vibration is delivered on the filter unit 5 through spring 25, first union body 15 and second union body 16, described filter unit 5 is also vibrated on fore-and-aft direction, come off thereby make attached to the dust on the filter unit 5.

In addition, flow at the dust-absorbing airflow that is positioned at filter unit 5 on second union body 16 in downstream, also be provided with the parts 16a that shakes that adds that makes above-mentioned filter unit 5 vibrations, add the parts 16a that shakes by this filter unit 5 is knocked.

In addition, in the above description, what dust arrester 12 was enumerated is the example of operating by the driven by power source, still, also can make the dust arrester 12 and the cord-reel of rolling power line 7 realize mechanical interlock, the masterpiece when manually pulling out power line 7 is that drive source is realized dust removal operation.Obviously, so also can realize identical effect.

Fig. 5 shows the schematic configuration of filter unit 5.Wherein, filter unit 5 is multilayer structure, being provided with the nonwoven 27 that the single or composite material that is provided with polyester, viscose, polypropylene etc. in 26, the 2 layers of the polytetrafluoroethylstephanoporate stephanoporate films constitutes on the positive top layer part of the upstream side that dust-absorbing airflow flows to, constitute matrix.Polytetrafluoroethylstephanoporate stephanoporate film 26 and nonwoven 27 are made collapsed shape, and the crest portion that is in polytetrafluoroethylstephanoporate stephanoporate film 26 1 sides in the described collapsed shape is covered by resin material 28 again.Like this, dust will be got up by the very fine surperficial catching of polytetrafluoroethylstephanoporate stephanoporate film 26.Because the detachment between dust and the polytetrafluoroethylene (PTFE) very good (that is being easy to break away from), therefore the vibration that only is added on the filter unit 5 by dust arrester 12 just can make dust attached thereto be removed/clean, thereby keeps dust removal ability.

But, polytetrafluoroethylstephanoporate stephanoporate film 26 intensity a little less than, whole film seems and the comparison fragility if external force directly is added on it, is easy to make its damage.Therefore, in the present embodiment, the parts 16a that shakes that adds of second union body 16 flows to the downstream that is a side opposite with polytetrafluoroethylstephanoporate stephanoporate film 26 knocked to dust-absorbing airflow.Like this, polytetrafluoroethylstephanoporate stephanoporate film 26 just can not sustain damage and phenomenon such as peel off, thereby can give play to its due function in for a long time.

In addition; the easiest crest portion of damaging when using cleaning brush etc. that polytetrafluoroethylstephanoporate stephanoporate film 26 1 sides are cleaned the user; also cover by resin; therefore can play a protective role to polytetrafluoroethylstephanoporate stephanoporate film 26; thereby can in long-time, keep good capture performance, maintain good dust removal performance simultaneously.

In addition, the resin material of crest portion that is used to cover polytetrafluoroethylstephanoporate stephanoporate film 26 1 sides that are collapsed shape is controlled very for a short time, its width a29 and height b30 have only 0.5mm～3mm, therefore can suppress the phenomenon that the surface area of filter unit 5 reduces, prevent that the ventilation crushing of filter unit 5 from increasing.Simultaneously, the scratch of polytetrafluoroethylstephanoporate stephanoporate film 26 can be protected.

In addition, owing to flow to the nonwoven 27 that the downstream is provided with the formation matrix at bottom that is dust-absorbing airflow, the material of nonwoven 27 is again materials such as polyester fiber and polypropylene fibre, therefore, the rigidity of filter unit 5 and intensity can be improved, even added that suction pressure also can suppress filter unit 5 metabolies such as fluctuating take place.Like this, dust can strengthen from the effect that filter unit 5 surfaces come off when adding vibration, and dust removing effects can be improved, thereby can keep very high dust removal ability.

(embodiment 2)

Another example of filter unit 5 has been shown among Fig. 6.In this embodiment, filter unit 5 is made into collapsed shape, and be provided with in the lowest point part of filter unit 5 that width is at least that 2mm or 2mm are above, the distance between the crest portion summit 2/3 be preferably 1/2 or following planar section c31.

Like this, the degree of depth of the lowest point will shoal, and dust can not be pressed into the depths, solidify, and can also can realize dust arrestment performance recited above and dust removal performance equally.In addition, after the degree of depth of the lowest point shoaled, cleaning brush etc. got at the lowest point part easily, thereby can dispose dust attached thereto fully.

(embodiment 3)

Another example of filter unit 5 has been shown among Fig. 7.In the filter unit 5 of this embodiment, the valley portions of filter unit 5 is arranged with the planar section d32 that resin forms.

Adopted after such structure because dust-absorbing airflow wears only the lowest point part, so dust can not be pressed into the depths of the lowest point part/solidify, its minute dirt/dust removal performance will improve; Simultaneously, planar section also forms easily, and the intensity of filter itself also can improve, when for example dust arrester knocks this part, can prevent that also filter is because of the dedusting damaged, can improve service life, and foregoing dust arrestment performance and dust removal performance can be realized equally.And after the degree of depth of the lowest point part shoaled, when carrying out foregoing artificial dedusting, cleaning brush etc. got at easily, can dispose fully attached to dust wherein.The same with the planar section among the embodiment 3 of front, the planar section in the present embodiment also is set to 2mm or 2mm is above, the distance between the crest portion summit 2/3 be preferably 1/2 or below.

(embodiment 4)

Electric dust collector among the embodiment 4 is provided with the electric fan 2 that produces dust-absorbing airflow and can installs and removes freely collection assembly of dust 3 also as shown in fig. 1 in its main body 1.Comprise in this collection assembly of dust 3: be used to capture the dust arrestment portion of dust of suction that is filter unit 5 and be used to store the dust storage element 4 of dust.In addition, 6 for removing the dust arrester that is captured back dust attached thereto by described filter unit 5, and 7 for being used for the cord-reel of rolling power line.8 for being used to attract the suction nozzle of dust, and this suction nozzle 8 is installed on the extension pipe 9.Extension pipe 9 is connected with dust collector host body 1 by handle part 10 and flexible pipe 11.

The dust and the dust-absorbing airflow that suck from suction nozzle 8 pass extension pipe 9, handle part 10 and flexible pipe 11 together, and are admitted in the collection assembly of dust 3 in the main body 1, are captured by filter unit 5.Such dust can be piled up gradually, and the mesh in the filter unit 5 is stopped up, and causes the air quantity of suction to descend.For this reason, by termly or when detecting the state that dust stops up mesh dust arrester 6 being operated, will attached to the dust in the filter unit 5 by vibration/shock/scan out or back and forth mode such as erasing remove effectively/clean, these dusts that remove/clean will be piled up in dust storage element 4.Like this, sucking air quantity can recover, and initial dust removal ability can access and keep.

In addition, as shown in Figure 2, combine by first union body 15 that is connected with dust arrester 12 with by knocking second union body 16 that operations such as filter unit 5 make it to vibrate between dust arrester 12 and the filter unit 5.First union body 15 and second union body 16 are such structure, promptly when assembling or with collection assembly of dust 3 when main body 1 is pulled down and then installs to the main body 1, first union body 15 and second union body 16 can interlink.In addition, because the external surface peripheral at union body has carried out aeroseal to collection assembly of dust 3, be provided with cone angle again on airtight of dust collector host body 1 and collection assembly of dust 3, therefore, when collection assembly of dust 3 was installed and removed, air etc. can not leak, even when collection assembly of dust 3 maintenance such as washed, dust arrester 12 can not be affected yet, thereby can realize very high reliability.

The operation of dust arrester 12 and electric fan 2 is controlled by control device 17.Particularly, control device 17 in the operation that operating means 18 carries out, makes dust arrester 12 and electric fan 2 work or quit work according to the user.And the operation of operating means 18 being carried out according to the user makes a period of times of dust arrester 12 work regulations when electric fan 2 is started working, in stopping period or the course of work.

An embodiment of dust arrester 12 has been shown among Fig. 3.Comprise in the dust arrester 12: core portion 19; Constitute the coiler part 20 in driven by power source; With the magnet 21 that occupies certain space in the magnetic circuit that is arranged in core portion 19.Magnet 21 forms one with the vibration transmission member that is first union body 15, and first union body 15 cushions elastomer that is spring 22 is bearing on the axle, and be mounted on this axle can up-down vibration.When feeding mains supply or direct current pulse power source in the coiler part 20, will there be magnetic field to take place in the core portion 19, will produces magneticaction, the union body 15 of winning is vibrated on above-below direction magnet 21.Such vibration is delivered on the filter unit 5 through second union body 16, described filter unit 5 is also vibrated on above-below direction, thereby will come off attached to the dust on the described filter unit 5.

The another kind of embodiment of dust arrester 12 has been shown among Fig. 4.Utilized the electromagnet principle in this dust arrester 12, comprising: the solenoid part 23 that constitutes the driven by power source; Constitute the axle 24 of moving component; With the elastomeric spring 25 of formation.The transferring elements that is in axle the place ahead of 24 i.e. first union body 15 links by spring 25 and above-mentioned dust arrester.When being passed into mains supply or direct current pulse power source in the solenoid part 23, axle 24 will carry out oscillating movement on fore-and-aft direction, such vibration is delivered on the filter unit 5 through spring 25, first union body 15 and second union body 16, described filter unit 5 is also vibrated on fore-and-aft direction, come off thereby make attached to the dust on the filter unit 5.

In addition, among superincumbent each embodiment, the dust-absorbing airflow of filter unit 5 therein flows on second union body 16 in downstream, is equipped with to make above-mentioned filter unit 5 that the parts 16a that shakes that adds of vibration take place, and adds the parts 16a that shakes by this filter unit 5 is knocked.

In addition, in the above description, what dust arrester 12 was enumerated is the example of operating by the driven by power source, still, also can make the dust arrester 12 and the cord-reel of rolling power line 7 realize mechanical interlock, the strength when manually pulling out power line 7 realizes dust removal operation as drive source.Obviously, so also can realize identical effect.

The structure of the filter unit 5 that is used in such electric dust collector has been shown among Fig. 8, and this filter unit 5 is combined by filter element 5A and protected location 5B.In filter element 5A, form matrix 25 (seeing Fig. 8 d) by the single of polyester, viscose, polypropylene etc. or nonwoven that composite material constitutes etc., the preceding surface layer that the dust-absorbing airflow of matrix 25 flows to upstream side is the filtering material that is provided with the porous membrane 26 of polytetrafluoroethylene (PTFE) formation, such filtering material is made into rugosity, and its periphery forms one with the frame parts 5Aa that synthetic resin is made again.In addition; in protected location 5B; form and can inlay the framework 5Bb that closes in mounting or dismounting mode freely on the frame parts 5Aa of described filter element 5A by soft materials such as rubber, netted or flake porous diaphragm 5Bc and framework 5Bb that strength ratio polytetrafluoroethylstephanoporate stephanoporate film 26 high polyethylene, polypropylene, nylon, polyester or stainless steels etc. form form an integral body.The dust-absorbing airflow that above-mentioned protected location 5B is set at described polytetrafluoroethylstephanoporate stephanoporate film 26 flows to upstream side, and reserves a gap T.Like this, both bigger thick dirt can be disposed earlier, simultaneously polytetrafluoroethylstephanoporate stephanoporate film 26 be played a protective role from the outside.Then, filter unit 5 is configured to the shape that leans forward, and its top is than bottom more close upstream one side on dust-absorbing airflow flows to.

In having the electric dust collector of above-mentioned formation; be drawn into dust in the collection assembly of dust 3 (as shown in Figure 2) in thick dirt separated/captured by the porous protection film 5Bc on the protected location 5B in the filter unit 5 earlier, the dust that is captured then is stored in the dust storage element 4.Then, the thin dirt that passes this porous protection film 5Bc is then separated/is captured by polytetrafluoroethylstephanoporate stephanoporate film 26, piles up then.

Then; dust arrester 12 adds the polytetrafluoroethylstephanoporate stephanoporate film 26 of filter unit 5 termly or when the state that the mesh that detects filter unit 5 take place to stop up and shakes, and the porous protection film 5Bc that this polytetrafluoroethylstephanoporate stephanoporate film 26 and edge are combined on the protected location 5B among the frame parts 5Aa of this polytetrafluoroethylstephanoporate stephanoporate film 26 vibrates.Like this, the thin dirt that the dust-absorbing airflow that adheres to/be deposited in described polytetrafluoroethylstephanoporate stephanoporate film 26 flows to upstream side is eliminated by the effect of its vibration force, and thick dirt falls in the dust storage element 4, and thin dirt then falls in the thin dirt chamber 13.

Here, because polytetrafluoroethylstephanoporate stephanoporate film 26 is in upstream in the above-mentioned filter element 5, so minute dust will be attached on this surface, and the dust separation of polytetrafluoroethylene (PTFE) is very good, therefore, only, just dust removing/cleaning attached thereto can be fallen, just can keep dust removal ability by simple vibration dedusting by being added to the vibration on the filter unit 5.

In addition, polytetrafluoroethylstephanoporate stephanoporate film 26 intensity a little less than, the comparison fragility so whole film seems when inhaling when the bigger handstone of the thick dirt of this film 26 and quality etc. bumps against it on, makes it cause damage easily, produces phenomenon such as partly come off.But; owing to flowing to upstream side, the dust-absorbing airflow at this polytetrafluoroethylstephanoporate stephanoporate film 26 is provided with its high porous protection film 5Bc of strength ratio; the damage that handstone that can thick dirt and quality is bigger etc. causes when knocking is reduced to Min.; therefore, can in long-time, give play to its good dust separation.

(embodiment 5)

Another embodiment of filter unit has been shown among Fig. 9.In this filter unit, protected location 5B is located on the filter element 5A in the mode that opens and closes freely by rotating shaft 29.In addition, the framework 5Bb of described protected location 5B is made into taper, makes to close the degree of depth with size of rotating fulcrum 29 opposite sides that is edge and be increased (intensification).

Adopt this embodiment, protected location 5B is connected with filter element 5A by rotating shaft 39, just can not lose when pulling down protected location 5B and clearing away like this, simultaneously, also has protected location 5B and snaps in advantage among the filter element 5A easily.

(embodiment 6)

Another embodiment of filter unit has been shown among Figure 10.In this filter unit, the both sides of filter element 5A are provided with for example guide member 40 of guide rail shape, and 40 couples of protected location 5B of such guide member play guiding function, thereby make it and can slide freely.

The same with the above embodiments 5, this embodiment can prevent that also protected location 5B from losing, and has the advantage that is installed to easily on the filter element 5A simultaneously.

(embodiment 7)

Figure 11 shows another embodiment of filter unit.Wherein, 25 matrixes for constituting by the single of polyester, viscose, polypropylene etc. or nonwoven that composite material is made etc., 26 for the dust-absorbing airflow that is located at this matrix 25 flows to porous membrane in the positive top layer of upstream side, and this porous membrane is made of the polytetrafluoroethylene (PTFE) of dust separation excellence.37 flow to the porous protection film that upstream side fits tightly for being arranged to the dust-absorbing airflow of described polytetrafluoroethylstephanoporate stephanoporate film 26; form netted or sheet by the high polyethylene of strength ratio polytetrafluoroethylstephanoporate stephanoporate film 26, polypropylene, nylon, polyester, stainless steel etc.; and the dust-absorbing airflow that is arranged on described polytetrafluoroethylstephanoporate stephanoporate film 26 flows to upstream side, protects from the outside to polytetrafluoroethylstephanoporate stephanoporate film 26.In addition, the filtering material that described matrix 25, polytetrafluoroethylstephanoporate stephanoporate film 26 and porous protection film 37 constitute forms rugosity, and the frame parts made from synthetic resin around it 39 constitutes one.

In filter unit 5 with above-mentioned formation; because outside the aperture opening portion of porous membrane from porous protection film 37 is exposed to; dust will be attached on this part; and the dust separation of polytetrafluoroethylene (PTFE) is very excellent; therefore; only need just dust removing/cleaning attached thereto to be fallen, just can keep dust removal ability by simple vibration dedusting to adding vibration on the filter unit 5.

Like this; with the same among the described embodiment 4; by by porous protection film porous membrane 26 being protected, the damage that handstone that can thick dirt and quality is bigger etc. causes when knocking is reduced to minimum degree, thereby can give play to good dust separation in long-time.

On the other hand, add the mode of shaking when carrying out dedusting, the situation that repeatedly dedusting can not be removed fully, still be left a little dust also may take place to carry out repeatedly attached to the dust on the above-mentioned polytetrafluoroethylstephanoporate stephanoporate film 26 in use.But under such occasion, the user can pull down filter unit 5, with cleaning brush etc. polytetrafluoroethylstephanoporate stephanoporate film 26 is scrubbed or is washed with water, so just can be disposing fully attached to the dust on the polytetrafluoroethylstephanoporate stephanoporate film 26.

In addition, though polytetrafluoroethylstephanoporate stephanoporate film 26 intensity are weak, whole film seems the comparison fragility, porous protection film 37 can play a protective role to polytetrafluoroethylstephanoporate stephanoporate film 26.Therefore, not only can fully dust be disposed when using common cleaning brush etc. to clear away, simultaneously, the external force of generations such as brush also only affacts on the porous protection film 37, and polytetrafluoroethylstephanoporate stephanoporate film 26 will be protected.Because these porous protection film 37 intensity are very high, can not be subjected to abrading equivalent damage, therefore, can in long-time, prevent that polytetrafluoroethylstephanoporate stephanoporate film 26 from sustaining damage.Simultaneously because this polytetrafluoroethylstephanoporate stephanoporate film 26 can be kept the good advantage of its dust separation outside the little bore portion of the porous protection film 37 of formation such as polyethylene is exposed to, therefore can be in long-time the very high dust removal performance of maintenance.

In addition, can be between above-mentioned porous protection film 37 and the polytetrafluoroethylstephanoporate stephanoporate film 26 by part mode such as bonding or welding realize fixing, like this, porous protection film 37 just is expected to be prevented with respect to the skew of polytetrafluoroethylstephanoporate stephanoporate film 26.

In addition; whole that also can make above-mentioned porous protection film 37 by bonding or welding etc. and porous membrane 26 formation one; like this can also prevent to carry out that above-mentioned part is bonding, incidental dust enters the phenomenon between polytetrafluoroethylstephanoporate stephanoporate film 26 and the porous protection film 37 during welding, prevents to enter because of dust the deterioration of the dust removal performance that causes.

In addition, the aperture opening size a on the above-mentioned porous protection film 37 is set at 0.1～5mm, is preferably 1～2mm.Opening size a is set at 0.1～5mm, preferably is made as 1～2mm, and the ventilation crushing that porous protection film 37 produces can not increase, and can protect porous membrane 26 not to be subjected to the influence of the external force of generations such as cleaning brush simultaneously again.And above-mentioned opening size a is made as 0.5～5mm, preferably is made as 1～2mm, and the dust separation performance of the porous membrane 26 outside the aperture opening portion is exposed to can be maintained, thereby can give play to due dust removal performance.

In addition, among the superincumbent embodiment 4, the aperture opening size a of porous membrane 26 also can similarly set.

And, in each above-mentioned embodiment, because the parts 16a that shakes that adds of second union body 16 knocks the matrix 25 that dust-absorbing airflow flows to downstream that is a side opposite with polytetrafluoroethylstephanoporate stephanoporate film 26 it is vibrated, therefore can not cause when directly knocking polytetrafluoroethylstephanoporate stephanoporate film 26 and to peel off equivalent damage, can in long-time, give play to its due function what it may cause.

In addition, because the dust arrester 12 among each embodiment is arranged on that the dust-absorbing airflow of filter unit 5 flows to the downstream and be roughly to be in its top, therefore, even being eliminated the dust that gets off comes off from filter unit 5 and also can not fall on the dust arrester 12, dust can not impact dust arrester 12, and reliability can be improved.

(embodiment 8)

Electric dust collector among the embodiment 8 is provided with the electric fan 2 and the mounting or dismounting collection assembly of dust 3 freely that produce dust-absorbing airflow also as shown in fig. 1 in its main body 1.Comprise in this collection assembly of dust 3: be used to capture the dust arrestment parts of dust of suction that is filter unit 5 and be used to store the dust storage element 4 of dust.In addition, 6 for removing the dust arrester that is captured back dust attached thereto by described filter unit 5, and 7 for being used for the cord-reel of rolling power line.8 for being used to attract the suction nozzle of dust, and suction nozzle 8 is installed in extension pipe 9, and extension pipe 9 is connected with main body 1 by handle part 10 and flexible pipe 11.

The dust and the dust-absorbing airflow that suck from suction nozzle 8 pass extension pipe 9, handle part 10 and flexible pipe 11 together, and send in the collection assembly of dust 3 in the main body 1, are captured by filter unit 5.Such dust can be piled up gradually, and the mesh in the filter unit 5 is stopped up, and the air quantity of suction will descend.But, by termly or when detecting the state that dust stops up mesh dust arrester 6 being operated, attached to the dust in the filter unit 5 just can by vibration/shock/scan out or back and forth mode such as erasing remove expeditiously/clean, these dusts that remove/clean will be piled up in dust storage element 4.As a result, the air quantity of suction can recover, and initial dust removal ability can access to be guaranteed.

In addition, combining like that as shown in Figure 2 between dust arrester 12 and the filter unit 5 by first union body 15 that is connected with dust arrester 12 with by knocking second union body 16 that operations such as filter unit 5 make it to vibrate.First union body 15 and second union body 16 have such structure, promptly collection assembly of dust 3 are being assembled the back or when main body 1 is pulled down and then install to the main body 1, first union body 15 will interlink with second union body 16 and be in the same place.In addition, because the external surface peripheral at union body has carried out the aeroseal processing to collection assembly of dust 3, be provided with cone angle again on airtight of dust collector host body 1 and collection assembly of dust 3, therefore, when collection assembly of dust 3 was installed and removed, air etc. can not leak, even when collection assembly of dust 3 maintenance such as washed, dust arrester 12 can not be affected yet, thereby can realize the structure that reliability is very high.

The operation of dust arrester 12 and electric fan 2 is controlled by control device 17.Particularly, control device 17 in the operation indication that operating means 18 carries out, makes dust arrester 12 and electric fan 2 work or quit work according to the user.And the operation of operating means 18 being carried out according to the user is when electric fan 2 is started working, stopping period or make a period of times of dust arrester 12 work regulations in the course of the work.

Figure 11 shows the structure of employed filter 5 in this electric dust collector.Wherein, 25 matrixes for constituting by the single of polyester, viscose, polypropylene etc. or nonwoven that composite material is made etc., 26 for the dust-absorbing airflow that is located at this matrix 25 flows to porous membrane in the preceding surface layer portion of upstream side, is made of the polytetrafluoroethylene (PTFE) of dust separation excellence.37 is to be arranged to flow to the porous protection film that upstream side closely contacts with the dust-absorbing airflow of described polytetrafluoroethylstephanoporate stephanoporate film 26; form netted or sheet by the high polyethylene of strength ratio polytetrafluoroethylstephanoporate stephanoporate film 26, polypropylene, nylon, polyester, stainless steel etc.; and the dust-absorbing airflow that is arranged on described polytetrafluoroethylstephanoporate stephanoporate film 26 flows to upstream side, protects from the outside to polytetrafluoroethylstephanoporate stephanoporate film 26.In addition, the filtering material that is made of described matrix 25, polytetrafluoroethylstephanoporate stephanoporate film 26 and porous protection film 37 forms rugosity, and the frame parts made from synthetic resin around it 39 constitutes one.

In having the electric dust collector of above-mentioned formation, be drawn into dust in the collection assembly of dust 3 (as shown in Figure 2) in thick dirt separated/captured by the porous protection film 37 of filter unit 5 earlier, the dust that is captured then is stored in the dust storage element 4.Then, the thin dirt that passes this porous protection film 37 is then separated/is captured by polytetrafluoroethylstephanoporate stephanoporate film 26, piles up then.

Then, dust arrester 12 adds the polytetrafluoroethylstephanoporate stephanoporate film 26 of filter unit 5 termly or when the state that the mesh that detects filter unit 5 take place to stop up and shakes, and this polytetrafluoroethylstephanoporate stephanoporate film 26 and porous protection film 37 are vibrated.Like this, the thin dirt that the dust-absorbing airflow that adheres to/be deposited in described polytetrafluoroethylstephanoporate stephanoporate film 26 flows to upstream side is eliminated by the effect of its vibration force, and thick dirt falls in the dust storage element 4, and thin dirt then falls in the thin dirt chamber 13.

Here, because polytetrafluoroethylstephanoporate stephanoporate film 37 is in upstream in the above-mentioned filter element 5, minute dust will be attached on this surface, and the dust separation of polytetrafluoroethylene (PTFE) is very good, therefore, only, just dust removing/cleaning attached thereto can be fallen, just can keep dust removal ability by simple vibration dedusting by being added to the vibration on the filter unit 5.

In addition, polytetrafluoroethylstephanoporate stephanoporate film 26 intensity a little less than, the comparison fragility so whole film seems when inhaling when the bigger handstone of the thick dirt of this film 26 and quality etc. bumps against it on, makes it cause the equivalent damage that partly comes off easily.But; owing to flowing to upstream side, the dust-absorbing airflow at this polytetrafluoroethylstephanoporate stephanoporate film 26 is provided with its high porous protection film 37 of strength ratio; the damage that handstone that can thick dirt and quality is bigger etc. causes when knocking is reduced to Min.; therefore, can in long-time, give play to its good dust separation.

In addition, though polytetrafluoroethylstephanoporate stephanoporate film 26 intensity are weak, whole film seems the comparison fragility, porous protection film 37 can play a protective role to polytetrafluoroethylstephanoporate stephanoporate film 26.Therefore, not only can fully dust be disposed when using common cleaning brush etc. to clear away, the external force of generation such as brush simultaneously also only affacts on the porous protection film 37, and polytetrafluoroethylstephanoporate stephanoporate film 26 will be protected.Because the intensity of porous protection film 37 is very high, can not be subjected to abrading equivalent damage, therefore, can in long-time, prevent that polytetrafluoroethylstephanoporate stephanoporate film 26 from sustaining damage.In addition, because this polytetrafluoroethylstephanoporate stephanoporate film 26 can be kept the good advantage of its dust separation outside the little bore portion of the porous protection film 37 of formation such as polyethylene is exposed to, therefore can in for a long time, keep very high dust removal performance.

In addition, can be between above-mentioned porous protection film 37 and the polytetrafluoroethylstephanoporate stephanoporate film 26 by part mode such as bonding or welding realize fastened to each otherly, like this, porous protection film 37 just is expected to be prevented with respect to the skew of polytetrafluoroethylstephanoporate stephanoporate film 26.

In addition; also can make whole of above-mentioned porous protection film 37 to form integrated by bonding or welding etc. and porous membrane 26; incidental dust enters the phenomenon between polytetrafluoroethylstephanoporate stephanoporate film 26 and the porous protection film 37 in the time of like this can also preventing to carry out bonding, the welding of part recited above, prevents to enter because of dust the deterioration of the dust removal performance that causes.

In addition, the aperture opening size a on the above-mentioned porous protection film 37 is set at 0.1～5mm, is preferably 1～2mm.Opening size a is set at 0.1～5mm, preferably is made as 1～2mm, and the ventilation crushing that porous protection film 37 produces can not increase, and can protect porous membrane 26 not to be subjected to cleaning the influence of the external force that brush etc. produces simultaneously again.

In addition, because the dust arrester 12 among each embodiment is arranged on that the dust-absorbing airflow of filter unit 5 flows to the downstream and be roughly to be in its top, therefore, even being eliminated the dust that gets off splits away off from filter unit 5, can not fall on the dust arrester 12 yet, dust can not impact dust arrester 12, and reliability can be improved.

(embodiment 9)

Present embodiment 9 and embodiment 8 identical parts have been put on identical symbol, and omit detailed description thereof.

The structure of the filter that is used for electric dust collector 5 shown in the present embodiment 9 has been shown among Fig. 8, and this filter unit 5 is combined by filter element 5A and protected location 5B.In filter element 5A, form matrix 25 (seeing Fig. 8 d) by the single of polyester, viscose, polypropylene etc. or nonwoven that composite material constitutes etc., the preceding surface layer that the dust-absorbing airflow of matrix 25 flows to upstream side is the filtering material that is provided with the porous membrane 26 of polytetrafluoroethylene (PTFE) formation, such filtering material is made into rugosity, and its periphery forms one with the frame parts 5Aa that synthetic resin is made again.In addition; in protected location 5B; form and can inlay the framework 5Bb that closes in mounting or dismounting mode freely on the frame parts 5Aa of described filter element 5A by soft materials such as rubber, netted or flake porous diaphragm 5Bc and framework 5Bb that strength ratio polytetrafluoroethylstephanoporate stephanoporate film 26 high polyethylene, polypropylene, nylon, polyester or stainless steels etc. form form an integral body.The dust-absorbing airflow that above-mentioned protected location 5B is set at described polytetrafluoroethylstephanoporate stephanoporate film 26 flows to upstream side, and reserves a gap T.Like this, both bigger thick dirt can be disposed earlier, simultaneously polytetrafluoroethylstephanoporate stephanoporate film 26 be played a protective role from the outside.Then, filter unit 5 is configured to the shape that leans forward, and its top is than bottom more close upstream one side on dust-absorbing airflow flows to.

The aperture opening size a of above-mentioned porous protection film 5Bc is made as 0.5～5mm, is preferably 1～2mm.Like this, neither can make porous protection film 5Bc cause the ventilation crushing to increase, but also can protect polytetrafluoroethylstephanoporate stephanoporate film 26.

On the other hand, add the mode of shaking when carrying out dedusting, the situation that repeatedly dedusting can not be removed fully, still be left a little dust also may take place to carry out repeatedly attached to the dust on the polytetrafluoroethylstephanoporate stephanoporate film 26 of above-mentioned filter element 5A in use.But, under such occasion, protected location 5B can be pulled down from filter element 5A, make outside the polytetrafluoroethylstephanoporate stephanoporate film 26 of filter element 5A is exposed to, the user can clear away by modes such as washings.In other words, even through long-time using, also be easy to clear away under the occasion that aeration takes place to descend maintaining operation such as dust.

And, in the above-described embodiments, because the parts 16a that shakes that adds of second union body 16 knocks the matrix 25 that dust-absorbing airflow flows to downstream that is a side opposite with polytetrafluoroethylstephanoporate stephanoporate film 26 it is vibrated, therefore can not cause when directly knocking polytetrafluoroethylstephanoporate stephanoporate film 26 and to peel off equivalent damage, can in long-time, give play to its due function what it may cause.

In addition, because the dust arrester 12 among each embodiment is arranged on that the dust-absorbing airflow of filter unit 5 flows to the downstream and be roughly to be in its top, therefore, even being eliminated the dust that gets off splits away off also from filter unit 5 and can not fall on the dust arrester 12, dust can not impact dust arrester 12, and reliability can be improved.

(embodiment 10)

Another embodiment of filter unit has been shown among Fig. 9.In this filter unit, protected location 5B is located on the filter element 5A in the mode that opens and closes freely by rotating shaft 29.In addition, the framework 5Bb of described protected location 5B is made into taper, makes with size of rotating fulcrum 29 opposite sides that is edge and closes degree of depth increase (intensification).

(embodiment 11)

Another embodiment of filter unit has been shown among Figure 10.In this filter unit, the both sides of filter element 5A are provided with the guide member 40 of (for example) guide rail shape, and 40 couples of protected location 5B of such guide member play guiding function, thereby make it and can slide freely.

In sum, the present invention comes off, makes simultaneously dust arrester that the dust removing effects of dust is increased substantially by making the dust in the filter easily, alleviated the workload of maintaining, and can keep powerful dust removal ability enduringly, the dust suction aspect of performance of therefore keeping electric dust collector in long-time can play very effective effect.

Claims

1. filter, it is characterized in that: on the face that is in upstream one side on the dust-absorbing airflow flow direction, be provided with the porous membrane that constitutes by polytetrafluoroethylene (PTFE) in the matrix, described matrix and described porous membrane are made collapsed shape, and the crest portion of one side of the porous membrane in the described collapsed shape is covered by resin coating.

2. filter as claimed in claim 1 is characterized in that: the width and the height setting of resin of crest portion that covers the porous membrane side of collapsed shape is 0.5mm～3mm.

3. filter, it is characterized in that: on the face that is in upstream one side on the dust-absorbing airflow flow direction, be provided with the porous membrane that constitutes by polytetrafluoroethylene (PTFE) in the matrix, described matrix and this porous membrane are made collapsed shape, are provided with planar section in the lowest point part of described collapsed shape.

4. filter as claimed in claim 3 is characterized in that: be provided with width in the lowest point part of collapsed shape and be at least 2mm or the above planar section of 2mm.

5. as claim 3 or 4 described filters, it is characterized in that: be provided with the planar section that forms by resin in the lowest point part of collapsed shape.

6. as each described filter of claim 1～5, it is characterized in that: the matrix that the dust-absorbing airflow that is located at porous membrane flows to downstream one side is a nonwoven.

7. electric dust collector is characterized in that: the described filter of each of claim 1～6 is used as the filter of the dust that capture sucks by electric fan.

8. electric dust collector as claimed in claim 7 is characterized in that: described filter is arranged to the shape that leans forward, the upstream side that its top flows to than the close dust-absorbing airflow in bottom.

9. as claim 7 or 8 described electric dust collectors, it is characterized in that also being provided with the dust arrester that is used to remove attached to the dust on the described filter.

10. electric dust collector as claimed in claim 9 is characterized in that: dust arrester has the mechanism that carries out dedusting by the surface of knocking a side opposite with the porous membrane of filter.

11. an electric dust collector is characterized in that: be used for capturing the filter unit of the dust that sucks by electric fan and dispose dust arrester attached to the dust of described filter unit, and

The face that the dust-absorbing airflow of described filter unit flows to upstream one side is provided with the porous membrane that is made of polytetrafluoroethylene (PTFE).

12. electric dust collector as claimed in claim 11 is characterized in that: dust arrester has by knocking the mechanism that a side opposite with the porous membrane of filter carried out dedusting.

13. electric dust collector; it is characterized in that comprising the filter unit that is used to capture the dust that sucks by electric fan; be provided with the porous membrane that is made of polytetrafluoroethylene (PTFE) in the above-mentioned filter unit on the face that is in upstream one side on the dust-absorbing airflow flow direction, the upstream side of described porous membrane is provided with the high porous protection film of this porous membrane of strength ratio.

14. electric dust collector as claimed in claim 13 is characterized in that: described filter unit is arranged to the shape that leans forward, the upstream side that its top is close more air-breathing than the bottom.

15. as claim 13 or 14 described electric dust collectors, it is characterized in that: described dust arrester has and knocks the mechanism that dedusting is carried out in side opposite with porous membrane in the filter.

16., it is characterized in that as claim 14 or 15 described electric dust collectors: described porous protection film be arranged to porous membrane on be in upstream one side face fit tightly.

17., it is characterized in that as claim 14 or 15 described electric dust collectors: described porous protection film be arranged to porous membrane on be in upstream one side face keep certain interval.

18. as each described electric dust collector of claim 11～17, it is characterized in that: described filter unit is made into collapsed shape.

19. as each described electric dust collector of claim 13～17, it is characterized in that: filter unit is collapsed shape, the part in the porous protection film is fixed on the porous membrane simultaneously.

20. the electric dust collector described in each of claim 13～19, it is characterized in that: the aperture opening size of described porous protection film is 0.1～5mm.

21. each the described electric dust collector as claim 11～20 is characterized in that: the downstream of porous membrane on dust-absorbing airflow flows to is provided with matrix.

22. filter; it is characterized in that: dust-absorbing airflow flows to the face that is in upstream one side and is provided with the porous membrane that polytetrafluoroethylene (PTFE) constitutes in the matrix, the porous protection film that this porous membrane of strength ratio is high be configured to described porous membrane on be in upstream one side face fit tightly.

23. filter as claimed in claim 22 is characterized in that: described matrix and porous protection film are made collapsed shape.

24. as claim 22 or 23 described filters, it is characterized in that: the part in the porous protection film is fixed on the porous membrane that is collapsed shape.

25. filter; it is characterized in that following structure: on the face that is in upstream one side on the dust-absorbing airflow flow direction, be provided with the porous membrane that polytetrafluoroethylene (PTFE) constitutes in the matrix; the upstream side of this porous membrane is provided with the high porous protection film of this porous membrane of strength ratio; this porous protection film is arranged to mounting or dismounting freely, outside described porous membrane is exposed to.

26. filter; it is characterized in that following structure: on the face that is in upstream one side on the dust-absorbing airflow flow direction, be provided with the porous membrane that polytetrafluoroethylene (PTFE) constitutes in the matrix; the upstream side of this porous membrane is provided with the high porous protection film of this porous membrane of strength ratio; this porous protection film is arranged to open and close freely, outside described porous membrane is exposed to.

27. filter; it is characterized in that following structure: on the face that is in upstream one side on the dust-absorbing airflow flow direction, be provided with the porous membrane that polytetrafluoroethylene (PTFE) constitutes in the matrix; the upstream side of this porous membrane is provided with the high porous protection film of this porous membrane of strength ratio; this porous protection film is arranged to slide freely, outside described porous membrane is exposed to.

28. each the described filter as claim 25～27 is characterized in that comprising: the porous membrane that is provided with matrix and filter element; With the protected location that is provided with porous protection film.

29. each the described filter as claim 25～28 is characterized in that: porous protection film be configured to and porous membrane on be between the face of upstream one side and leave the gap.

30. as each described filter of claim 25～29, it is characterized in that: described matrix and porous membrane are made into collapsed shape.

31. the filter described in each of claim 22～30, it is characterized in that: the aperture opening size on the described porous protection film is 0.1～5mm.