CN101478909B

CN101478909B - Vacuum cleaner

Info

Publication number: CN101478909B
Application number: CN2007800242988A
Authority: CN
Inventors: F·达维德
Original assignee: SEB SA
Current assignee: SEB SA
Priority date: 2006-06-27
Filing date: 2007-06-26
Publication date: 2011-07-27
Anticipated expiration: 2027-06-26
Also published as: KR20090035551A; EP2032010B1; RU2009102543A; CN101478909A; WO2008000947A1; RU2416356C2; FR2902632B1; ES2549114T3; FR2902632A1; EP2032010A1

Abstract

The invention concerns a vacuum cleaner comprising a housing, wherein is situated an electric motor associated with a ventilator that, while the vacuum cleaner operates, allows the creation of air suction from a manifold, upstream from the motor and ending in a sucker, up to output of air from the housing situated downstream from the motor, with a filtration device situated on the aeraulic pathway, preferably upstream from the motor, and the motor situated in a specific streamlined body (130), characterized in that this streamlined body (130) has a plurality of air outlets drilled therein, thus making up a total surface of at least 10 cm<2>, with each opening in the streamlined body (130) making up a surface comprising between 0.75 mm<2> 40 mm<2> of the entire surface.

Description

Dust catcher

Technical field

The present invention relates to dust catcher field of household appliances, particularly dust collector structure.

Background technology

The objective of the invention is to propose to reduce the device of the noise relevant with the dust catcher operation.A plurality of documents relate to described problem, and have proposed the solution of bundle envelope motor especially, and it is associated with prolongation from the air stroke of the outlet opening of motor towards being located at the dust catcher frame or is unconnected.

Therefore, document EP 0345699 proposes by the air stroke of deflector prolongation after motor.Yet, the huge and therefore very occupation of land of this device volume.

Summary of the invention

Therefore the present invention proposes to reduce the device of noise in dust catcher, described dust catcher comprises frame, electric notor is installed in described frame inside and links to each other with blower fan, thereby be in operation can from be positioned at described motor upstream and end at inhalator pipeline, produce the air suction up to the air outlet slit in the described motor of being positioned at of described frame downstream, filter is set on the pneumatic stroke, preferably be set at the upstream of described motor, described motor is set in the special cover body.According to the present invention, described cover body is installed with area and is total up to 10cm at least ²The opening used of a plurality of exhausts, the area that each opening of described cover body has is between 0.75mm ²And 40mm ²Between.

Therefore, cover body can be by the barrier restriction noise that constitutes thus on the one hand.On the other hand, realize that a plurality of openings can export distribution of air flow to motor, and avoid air-flow to concentrate on some preferential zone---and this is a situation about taking place through regular meeting when having unique opening, and can local cause the noise that speed increases and passes through continuously.

This air-flow newly is distributed with and is beneficial to the highest air velocity of reduction, and air velocity is evenly distributed on the whole surface that is installed with the hole, causes the reduction of noise thus.

Yet it is a great deal of to must be noted that total opening of being represented by a plurality of openings has, and the opening that can realize having suitable cross-section simultaneously, and described cross section promptly can be not little of causing noise shake ring and bigger load loss, can be greatly to not distributing air-flow yet.Therefore, the gross area that reaches of opening is at least 10cm ²In addition, the area that has respectively of each opening of cover body is between 0.75mm ²And 40mm ²Between.

In fact, the binding energy that two parameters are the size and the quantity thereof of described opening just---being the gross area of opening---brings the better sound effect:

The size of-opening must be suitable for can not causing shake ring noise (when size too hour), and can allow air evenly to distribute, and reduce speed difference by a large amount of openings, this can reduce eddy current,

The gross area of-opening must be enough big, thereby can not cause too big load loss.

Advantageously, the opening of cover body is set on one or more walls of the cover body of dust catcher frame air outlet slit, thus can be not directly noise transmission to outlet, and need not special conduit and also need not auxiliary member.

In order advantageously to improve noise reduction, can in cover body open surfaces opposite absorbing material be set in the cover body outside.According to the character and the size of material, described material will absorb the part acoustic energy in some frequency and certain efficient levels from these openings.

Therefore, note the size according to the wall that comprises described opening, set the size in the face of the surface area of the absorbing material of opening, be put in each opening opposite thereby the part of realizing thus can be, this can increase acoustic absorption efficient.

In addition, according to the position of opening, the air velocity of cover body outlet is also inequality, and the configuration of motor air outlet with respect to the cover body outlet opening depended in this change, and depends on the position of the air outlet slit of dust catcher frame.

Along with the air outlet slit of dust catcher frame near described opening, the circulation of air cross section in the cover body opening downstream of being determined by the wall and the absorbing material of cover body is big more, thereby reduces the discreteness of the air velocity of cover body outlet.

In other words, the circulation of air cross section in cover body outlet opening downstream---it may comprise absorbing material, has the circulation of air cross section that increases along the flow direction in cover body outlet opening downstream.In this way, the circulation of air cross section that constitutes thus can obtain more uniform air velocity.

Advantageously, the increase of described flow area is with proportional by the increase in the formed cross section of cover body outlet opening that is run on the air stroke, thereby can make between the air velocity and proper air velocity in the circulation of air cross section in described opening downstream at cover body outlet opening place, keep uniform air velocity.

Especially, opening is the closer to the air outlet slit of dust catcher frame, and the circulation of air cross section of contiguous this opening is just big more, thereby with respect to the air velocity at cover body outlet opening place, can reduce the air velocity in the described circulation of air cross section.

Advantageously, employed absorbing material is a foam, and therefore preferably, hole density is greater than per inch 75 holes.

In addition,, can in improvement of the present invention, the additional cover of isolating sound be set, wherein be provided with the cover body part and the absorbing material that comprise opening in order to strengthen noise reduction.

According to a preferred implementation of the present invention, at least one cover body is made with polypropylene, and frame can be made with expanded polypropylene (PPE) substantially.

Relevant use and advantage for the expanded polypropylene of the dust catcher frame that realizes at least a portion is described in application documents FR 2873563.

The advantage of making the electrical equipment main body with described material is a lot: slim and graceful, environmental protection, firm etc.Yet when making main body of dust collector or main body of dust collector a part of with PPE, the swelling properties of material makes can penetrate described main body with thorn.If such operation takes place, for example when bumping, need prevent metallic rod and constitute the power unit that has that motor is electrically connected and contact with metallic rod as crochet needle.

Be noted that such accident can not have influence on the robustness of electrical equipment main body, the plasticity of PPE allows to make material recover shape again after taking out object, and structure is not produced the damage of essence.

Therefore, the motor cover body except the sound property of foregoing description, also by make special protection part that the motor active part made by rigid material around and can protect the motor active part.Described rigid material refers to the material that can resist mechanical stress, but this resistance also can be brought certain material deformation, especially the material of the clause 30 by the standard 60-335-1 relevant, its ball that proposes opposing diameter 2.5mm under 20 newton's active force with standard C EI 60-695-10-2 pass the drag test---it should reserve the marking less than 2mm.

Preferably, the hardness of this material is more than or equal to 5Hv.Advantageously, use polypropylene (PP) to realize cover body.

In addition, the use of PP and PPE can also reduce the diversity of the plastic material of use, and the recovery when electrical equipment is finished service life obtains to simplify.

Description of drawings

Other features and advantages of the present invention will provide in the description below with reference to accompanying drawing, and described accompanying drawing only constitutes some non-circumscribed embodiment.Fig. 1 to Fig. 4 illustrates first embodiment of the present invention, and Fig. 5 to Figure 11 illustrates second embodiment of the present invention.

Fig. 1 is a perspective view of being furnished with dust catcher of the present invention.

Fig. 2 is the exploded view of dust catcher main difference part.

Fig. 3 is overlooking of some part of dust catcher and perspective exploded view.

Fig. 4 is the perspective exploded view of dust catcher motor cover.

Fig. 5 is the part sectioned view of the dust catcher frame of second embodiment of the invention.

Fig. 6 is the rear view of dust catcher.

Fig. 7 is the vertical view of dust catcher.

Fig. 8 is the profile along the section A-A of Fig. 7.

Fig. 9 and Figure 10 are respectively the side view and the rearviews of the present invention one thin portion.

Figure 11 is the exploded view of the sub-component of dust catcher.

Figure 12 and Figure 13 illustrate some enforcement modification of second embodiment of the present invention respectively with the perspective view and the profile of some element of dust catcher.

The specific embodiment

Especially as shown in Figure 1 to Figure 3, comprise main body of dust collector according to the dust catcher 1 of first embodiment of the invention, described main body is made of three major parts, these three major parts made respectively and assembling subsequently and they as follows:

The little main body 2 in-bottom, it has:

The seat groove 20 of motor bottom,

Be used for that the back control member is for example taken turns or the position district 22 of roller (not shown),

The air outlet slit 26 of dust catcher,

The seat groove 30 of the bottom of cable drum 10,

-upper body 4, it comprises:

Space 40, its setting are used for receiving filtration dirt bag,

The seat groove 42 on the top of cable drum 10,

The position district 48 that dust catcher front control member (not shown) is used,

The dead slot portion 44 that motor top is used, it combines with the seat groove 20 of following main body 2,

The insert 45 that allow to connect suction channel, the described insert bag bracket 46 interior with being arranged on space 40 matches,

-back part 50, it comprises the roomy handle 52 of moving that is used for mobile dust catcher.

According to first embodiment of the present invention, the constituent material of dust catcher promptly so is at least gone up main body 4, is preferably also had the constituent material of main body 2 and back part 50 down, is expanded polypropylene (PPE).

Yet in order to strengthen the impact resistance of handle 52, back part 50 has polypropylene (PP) material cores of non-foaming, thereby can make this back part 50 mechanically resist the possible impact that puts on handle.

Yet the more weak requirement of mechanical strength of PPE increases the thickness of wall greatly, just can make it have enough firmness.Yet in the mode that astonishes, even if the volume of material requested thereby volume ratio standard type bigger that cause dust catcher, the quality of plastic material but can be reduced greatly, and the weight of final dust catcher can reduce by half.

Yet quantity of material keeps than conventional cleaners still less, and from saving angle, this is more favourable, because the dust catcher manufacturing cost is lower.

With respect to other conventional plastic that is used for making dust catcher, the big flexibility of PPE can be improved impact absorption.According to dilation, the elastic memory of described material and this bigger flexible associated, adaptive different auxiliary components are assemblied on the electrical equipment main body aspect, this has bigger advantage.In fact, therefore can for example need not hinge connects different lids, and by making the material deformation described lid of snap close simply.This useful feature can also allow by nested fixing insert without difficulty.

In fact, only need " forcing " material deformation, just energy locking or fixedly insert, material recover its shape to keep assembly after distortion.

Therefore, according to the example that is proposed, lid 80 is made and is set at expanded polypropylene and goes up on the main body.Explain that as above-mentioned the machinery of lid on main body on the dust catcher 4 keeps by making the nested acquisition of material deformation.

Described lid can seal the seat groove of dirt bag, and can be the air guide groups of motors that comes from the dirt bag.By way of parenthesis, described lid can receive for example little brush, the first-class different dust suction annex of dust suction in its thickness.

According to the example that proposes, the

bar

12,13 of the maintenance of last main body on following main body below main body 2 under being supported on guaranteed.Bar 12 engages with back part 50, and bar 13 is connected to the rigid member 90 that is arranged on the main body 4.

Preferably, support member and the unshowned dust collector roller associated of

bar

12 and 13 below following main body 2.About central roller, this central roller is connected to and can allows on the stand 11 that roller centers again with respect to dust catcher integral body.

According to described example, the proper assembling of last main body on following main body is:

barre

12 and 13 is tightened in the respective tube from rigid member 90 and back part 50, and advantageously, these pipes and/or these bars pass the part of main body 4.Fig. 2 especially illustrates this pipe 14 from rigid member 90, and described pipe 14 receives and passes down the bar 13 of main body 2 through perforate 24.

Described tightening therefore can be passed through rigid member 90 and back part 50, and last main body is pressed on down on the main body, and the moderate finite deformation of aforesaid PPE can need not special packing ring realizing sealing between main body and the last main body down.

Rigid member 90 can have various shape and structure: from aforesaid dirt bag compartment rear portion and the basic part of going up the whole width of main body that covers of being positioned at, arrive the more part of depression.Also can consider to form by a plurality of independently parts.

Equally, on the contrary, the stayed surface below the following main body can be guaranteed by the plate that more or less stretches, as rigid member 11.Therefore can below following main body, a rigid member be set, and the support zone of more disconnected shape is set on last main body.

Yet the advantage that being set at the rigid member 90 on the main body also provides is to realize other function.Therefore, rigid member 90 has with the position district of the operation/shut-down operation button 60 of switch associated and with the unroll position district of the button 68 on reel 10 of cable.

Rigid member 90 also has a groove 92, and in order to the box body 94 of the pleated filter that accommodates the HEPA type, described filtration physical efficiency was filtered described air before the air from the dirt bag enters motor.

Preferably, indicator lamp, manipulation and

control member

60,68, and rigid member 90,

pipe

12,13, and roller is made with non-expanded polypropylene.

From the power supply road of household electrical outlet, begin by the dust catcher current supply cable that is installed on the reel 10 to the motor power supply.Electric wire stretches out from the standing part of reel, on two binding posts 72 that are connected to electronic cards 70.Other two binding post 72 of electronic cards 70 be used to move/stop button is connected.Finally, other two binding post 72 can allow motor to be connected in the circuit.

According to this embodiment, dust catcher 1 comprises active part to electrical equipment, be the guard member of electrical connection of the different elements of motor power supply circuits.

Therefore, reel 10 comprises the shell 100 that covers the reel rear portion.Therefore this shell covers electric wire and connects at the reel place.

In addition, according to the present invention, unshowned motor is accommodated in the housing 120, and the lid 122 of this housing 120 has passage 124.Advantageously, housing 120 is made of the rigid member made from non-expanded polypropylene.

In addition, lid 122 has air admission hole 126 and seal washer 128, and described seal washer can guarantee the sealing of motor cover when last main body and following main body compress.

Passage 124 can be admitted electronic cards 70 fully.Therefore, the power supply electric wire that is derived from reel engages with two binding posts 72 of electronic cards, and they are connected to described electronic cards thus.

Housing 120 also comprises the basic columniform cover body 130 that is, described motor cover is around motor, and lid 122 passes through the mount of bayonet type on described cover body.The described cover body that links to each other with passage 124 can be protected the movable part of binding post 72 and motor.Cover body is the noise of beam limit motor generation also.

For this reason, advantageously, cover body comprises a plurality of openings 132 of giving vent to anger, and these cylindrical openings have the diameter of about 2.5mm.According to the example that proposes, cover body comprises the opening more than 400, and total output area of these openings is about 21cm ²

In order further to reduce the noise that motor produces, foam 134 is set at opening 132 fronts, and this foam bears against on one of vertical substantially surface of main body 4.Such foam can absorb the noise of the vertical wall generation of main body on the air impact before the outlet 26 of main body 2 under the air arrival.

As shown in Figure 4, the round-shaped energy limit air with foam associated cover body is collided noise, and makes air output the mobile of cover body become unimpeded.

Advantageously, this outlet is implemented in the opposing face of opening 132, thereby prolongs air loop, and this helps reducing noise.Improvement to described noise reduction also is: the foam 136 in the support 138 is arranged on air outlet slit 26 fronts, as shown in Figure 4.

Advantageously, protection cover body and protection box body are made with the polypropylene of non-foaming, thereby can limit the diversity of the material that uses.Yet can be within the scope of the invention, consider to use other any can reach electric insulating effect, have a material that excellent mechanical intensity is especially resisted the required character of needle-penetration.

About expanded polypropylene, it uses by the dilation that the quantity of every liter of material (polypropylene) is determined.In more favourable mode, with use every liter of material at 40g to the content between the 80g (teneur).

In addition, in order to simplify employed polyacrylic recovery, will preferentially use homopolymers.

According to the second embodiment of the invention shown in Fig. 5 to 11, dust catcher 200 comprises the frame that is made of last main body 202 and following main body substantially.Consider to be the clear the present invention of elaboration, following main body is not illustrated.

Last main body 202 supporting power governor 210 and two

buttons

212 and 214, these buttons can unroll respectively motor service cable, with start or stop the dust catcher motor.

The circular portion of last main body front is configured as handle 218.Lid 215 is hinged on the upper surface of main body 202, the connector 216 that the suction channel that described lid 215 supportings are not illustrated is used.

In addition, last main body comprises to be held air filtration and is inhaled into the compartment 206 of rubbish storage with bag, and described compartment is sealed by lid 215 on top.Compartment 206 comprises the opening of realizing pneumatic communication with the motor compartment on its rear surface 207.

Last main body 202 also supports front wheel 230 and rear roller (not shown) and can be the sleeve pipe 222 of service cable guiding to reel.

According to the present invention, motor 240 is set in the cover body, and this cover body comprises two parts: cover the upper-part 250 of motor air inlet, and the lower member 260 that covers the motor air outlet, as shown in Figure 8.Therefore cover body centers on motor fully, and therefore can seal by consequent bundle and reduce noise.

Figure 11 illustrates the configuration of motor in cover body.Packing ring 242 can guarantee the sealing of air intake of the motor of cover body inside, and packing ring 252 can be realized the sealing of pneumatic connection between compartment 206 that holds refuse bag and motor zone.

And packing ring 254 can guarantee the sealing between cover body two parts.

In addition, the lower member 260 of cover body is installed with a plurality of openings 262 that can allow air to discharge from cover body.In the face of these openings, be provided with for example absorber element 270 of foam.Described foam is set at from cover body and exports on the whole substantially air stroke of dust catcher frame outlet, and simultaneously, the filter 220 that the HEPA type is passed in this output carries out.

Advantageously, shown in Fig. 8 and 11, the lower cover 260 of motor and foam 270 and HEPA filter 220 are set in the supporting member 280 on the upper outlet body 250 that is fixed in motor, therefore described supporting member constitutes second cover body, described second cover body passes through the wall that had, can further be reduced in the noise that feel the electrical equipment outside.

The size of opening 262 and quantity are substantially as described above.Advantageously, described opening is provided with by the mode of net, and as shown in figure 10, its level interval p is about 6mm, and its vertical interval q is about 3.5mm.Yet, it is also conceivable that variable spacing according to the relative position of the air outlet slit of the relative dust catcher frame of these openings.

In addition, cover body 260 is about 4mm in the thickness e of opening part, and this constant thickness can realize laminar flow in the cover body outlet.And in one of improvement of the present invention, this thickness enough is used for designing the truncated cone shape opening, and promptly these openings enlarge to the outside from the inside of cover body, and these openings can reduce the air output speed by the shape that it is spout.

According to an improvement of the present invention, these openings are positioned on the rear surface and lower surface of cover body bottom, promptly are positioned at the opposing face of the air outlet opening of electrical equipment frame, and this output is passed filter 220 and realized.

On-stream, air along arrow shown in Figure 8, is exported from motor after passing filter bag and motor subsequently.Air is exported from cover body by opening 262 subsequently, discharges from frame so that pass filter 220 subsequently along absorber element 270 afterwards.

As shown in Fig. 8 and 9, for the opening away from electrical equipment frame air-out, the circulation of air cross section that is positioned on the height a of wall of cover body 260 is less, to remedy air output speed less when passing these outlets.

Therefore, flow area S ₁Than flow area S ₂Littler, air-flow is distributed on the whole width in the zone that is installed with the hole of cover body substantially.

Such changes of section realizes by the given bend 272 of foam 270, thereby allows the progressive and linear variation that is beneficial to restriction turbulent flow and impact noise.

This air-flow distributes more equably in the cover body outlet, therefore helps to reduce aerodynamic noise.

Figure 12 and Figure 13 illustrate an enforcement modification of the motor cover of second embodiment of the invention.

Therefore, Figure 12 illustrates the lower member 360 of motor cover body, and described lower member has opening 362, the size of these openings, quantity and density and above-mentioned basic identical.Yet opening 362 only is positioned on the lower wall of cover body lower member, with the opposing face of the air outlet slit 320 of dust catcher frame, as shown in figure 13, the figure shows the profile of motor and relevant cover body.

Therefore, motor 340 is installed in the cover body, and described cover body is made of upper-part 350 and lower member 360.The air outlet opening 362 of cover body can be the air guiding to the bottom.Aforesaid absorbing material 370 is arranged to facing to opening, is positioned at the cover body outside, thereby absorbs the acoustic energy of a part of output gas flow.This absorbing material is contained in second cover body 380, and described second cover body is fixed on the upper-part 350 of first cover body.

As shown in figure 13, the circulation of air cross section of lower member 360 outlets of cover body increases along airflow direction, so that air communication is crossed the discreteness that these openings are distributed and be limited in the air velocity at this place.

The present invention also not only is confined to the embodiment that is proposed and the improvement of mentioning, but contains the equivalent technologies of the solution of all designs.

Claims

1. dust catcher (1,200), it comprises frame, electric notor (240,340) it is inner and link to each other with blower fan to be installed in described frame, can be thereby be in operation from being positioned at described motor upstream and ending at the pipeline of inhalator, up to the described motor (240 of being positioned at of described frame, 340) air outlet slit in downstream (320) produces the air suction, filter is set on the pneumatic stroke, at described motor (240,340) upstream, described motor (240,340) be set at special cover body (130,260,360) in

It is characterized in that, described cover body (130,260,360) is installed with area and accounts for altogether at least that a plurality of openings of 10cm2 (132,262,362) are used to reduce noise, and the area that each opening (132,262,362) of described cover body (130,260,360) has is between 0.75mm2 and 40mm2.

2. according to the described dust catcher of claim 1 (1,200), it is characterized in that the opening (132,262,362) of described cover body (130,260,360) is set in described cover body one or more walls relative with the air outlet slit (320) of frame described dust catcher (130,260,360).

3. according to the described dust catcher of claim 2 (1,200), it is characterized in that absorbing material (134,270,370) is arranged at the outside of described cover body in the face of the opening (132,262,362) of described cover body (130,260,360).

4. according to the described dust catcher of claim 3 (1,200), it is characterized in that the area in the face of described opening (132,262,362) of described absorbing material (134,270,370) equals the area of the described one or more walls that comprise described opening (132,262,362) of described cover body (130,260,360) at least.

5. require 3 described dust catchers (200) according to aforesaid right, it is characterized in that, described absorbing material (270,370) is set at apart from the variable range place of the described one or more walls that comprise described opening (262,362) of described cover body (260,360).

6. according to the described dust catcher of claim 5 (200), it is characterized in that, along with the air outlet slit (320) of the frame of described dust catcher near opening (262,362), the circulation of air cross section (S1, S2) in this opening (262,362) downstream of the described cover body of being determined by the wall and the described absorbing material (270,370) of described cover body (260,360) (260,360) is just big more.

7. require 3 described dust catchers (1,200) according to aforesaid right, it is characterized in that, described absorbing material (134,270,370) is a foam.

8. require 3 described dust catchers (200) according to aforesaid right, it is characterized in that, the part that comprises described opening (262,362) and the described absorbing material (270,370) of described cover body (260,360) are set in the isolates sound cover (280,380).

9. according to claim 1 or 2 described dust catchers (1,200), it is characterized in that making one of at least in the described cover body (130,260,360) with polypropylene.

10. according to claim 1 or 2 described dust catchers (1,200), it is characterized in that described frame is made with expanded polypropylene.