CN102415854A

CN102415854A - Suction nozzle sliding base plate of a vacuum cleaner

Info

Publication number: CN102415854A
Application number: CN2011102749961A
Authority: CN
Inventors: 赛里·吉诺
Original assignee: SEB SA
Current assignee: SEB SA
Priority date: 2010-09-24
Filing date: 2011-09-16
Publication date: 2012-04-18
Anticipated expiration: 2031-09-16
Also published as: FR2965165A1; CN102415854B; EP2433538A1; PL2433538T3; KR20120031452A; FR2965165B1; KR101870442B1; PT2433538T; EP2433538B1; ES2670575T3

Abstract

The soleplate (100) has a suction channel (10) that is defined at a front by a front scrapping edge (11) and at a rear by a rear scrapping edge (12). A regulating unit regulates flow-pressure torque of air sucked in the suction channel, where the regulating unit has a sealing cover (20) comprised in a scrapping plane. An advanced effort limiting unit has a front attack chamfer (25) arranged at a front of the sealing cover forming an angle (beta) with the scrapping plane, where the angle is lower than 20 degrees.

Description

Cleaner suction nozzle scrape wiping board

Technical field

The present invention relates generally to that a kind of base has improved the cleaner suction nozzle of dust collection efficiency.

Background technology

Known in the prior art is the cleaner suction nozzle of purpose so that the controlled dust collecting system of a kind of parameter to be provided.Document GB1458899 has provided a kind of cleaner suction nozzle, and the base of this cleaner suction nozzle has suction passage, and this suction passage is forwardly defined by flexible thin sheet with the rear portion.These thin slices can deform under the effect to the vertical supporting force of base that is generated by the step-down in the passage.When distortion, these thin slices change the active surface of passage and regulate supporting force, to allow with constant force scraping weaving ground.Scraping is meant the mechanism of base on the hair on the weaving ground that should clean.

Above-mentioned system particularly has the not high enough shortcoming of operating efficiency.In fact, this system only works to base applying power on the ground, so that cause the reaction to scraping.Yet the air mass flow that this system can't guarantee to enter in the suction passage at all is enough to drive particle to be sucked.Even can notice; Deformable piece adopts plastics to process, and will harden in the process and no longer suitable distortion in its service life, makes that the live part of passage is more; Make supporting force more much bigger than the needs of initial specification, this has limited the air mass flow of process under thin slice.As a result, reduced dust collection efficiency.Also be appreciated that the document has proposed to be equipped with the suction nozzle of roller, these rollers guarantee the minimum clearance between the lower surface of ground and base.Therefore, these rolling elements are forced minimum through the surface to air mass flow, no matter the pressure in the suction passage how, simultaneously these rolling elements on weaving ground, use inconvenient because the barrier that their diameter is not suitable for running into.At last, use these parts to make nozzle structure complicated and expensive.Obviously, above-mentioned base does not allow when assurance is swiped to weaving ground with enough impurity inlet flows, to reduce motor power (output).

Summary of the invention

The objective of the invention is to solve the shortcoming of the document of above-mentioned prior art, particularly, a kind of simple cleaner suction nozzle base (semelle) is provided at first, this base allows to guarantee the effective dust suction and convenient use the on the weaving ground when suction nozzle moves.

For this reason, the present invention at first relates to a kind of cleaner suction nozzle base, and base has at least one ground suction passage, and suction passage is forwardly defined by the scraping edge with the rear portion.Base comprises the mechanism that is used to limit base thrust on the ground; This mechanism interacts to the governor motion that (couple pression-d é bit) regulates with the flow rate pressure that is used for being drawn into the air in the suction passage, confirms the drag losses (perte de charge) of the air of process under preceding scraping edge in advance.By the governor motion that is used for the pressure and the flow of the air in the suction passage are regulated, try hard to keep effective scraping on card ground to be cleaned of the applying that produces by the pressure in the suction passage, on the other hand, flow is enough to rotating band and sucks particle.The mechanism that is used to limit thrust makes suction nozzle easy to use easily, also participate in confirming pressure and the value of flow in the suction passage of suction nozzle simultaneously.At last, governor motion also participates in limiting the power that is used to make the base motion, distributes applying power simultaneously and guarantees that this applying power is not very big.

Preferably, the scraping edge limits the scraping plane, and, be used for the flow pressure that is drawn into the air in the suction passage is comprised sealing plate to the governor motion of regulating that sealing plate is included in the scraping plane and by preceding scraping edge and defines.Drag losses is to confirm with plain mode according to the width of sealing plate, because air is forced through weaving to be cleaned ground.This plate allows contact force is distributed to weaving to be cleaned ground, and this has limited the power that when suction nozzle moves, should be applied by the user.

Preferably, attack inclined-plane (chanfreins d ' attaque avant) before the mechanism that is used to limit base thrust on the ground comprises, precedingly attack the front portion that the inclined-plane is arranged in sealing plate.Should the simple effect of implementing to have be, restriction thrust when suction nozzle is pushed away forward, but the air mass flow that its front that is arranged in plate is also allowed to guide institute's inhaled air and guarantee process under plate allows the correct particle that sucks.

Preferably, be used to limit base setback force on the ground after attack the inclined-plane and be arranged in after the back scraping edge.Should the simple effect of implementing to have be, when suction nozzle is drawn backwards, the restriction setback force, but its back that is arranged in back scraping edge is also allowed to guide institute's inhaled air and guarantees that the air mass flow of process under back scraping edge allows the correct particle that sucks.

Preferably, suction passage has a length L c, and plate has a width Lp, and this width Lp is greater than the value that is limited formula Lp＞570/Lc.On the whole length of drag losses at suction passage of the air of process under the plate, be assigned with.This suction passage is long more, and the drag losses of per unit length is just more little.For this reason, this formula of minimum of a value that defines the width of plate allows to revise this width, and this width is directly controlled drag losses.Fluid machinery test and experiment show that too narrow plate is not suitable for confirming in advance enough drag losseses.

Preferably, preceding attack the inclined-plane and after attack the inclined-plane and the scraping plane forms the angle between 10 ° and 20 °, and preceding attack the inclined-plane with after attack the inclined-plane and be connected with arcuate member (rayon) with the relative end of edge of swiping at it.The scope of this inclined-plane angle of attack value allows not only to guarantee the ease of use that increases, and guarantees correct flow, to allow gratifying dust collection efficiency.Below 10 °, inclined-plane constrained motion power, but too much limited flow more than 20 °, help air mass flow, but the thrust that is used to base is moved is very big.

Preferably, preceding arcuate member of attacking the inclined-plane between 1 millimeter and 4 millimeters, and after attack the inclined-plane arcuate member between 2 millimeters and 8 millimeters.Here be equally, the value that is arranged in the arcuate member of end beveled allows to reduce the resistance to motion, but also allows to guarantee to realize the flow value of effective dust suction.

Noticeable especially a kind of enforcement is that sealing plate has the width between 4.5 millimeters and 5.5 millimeters, and preceding attack the inclined-plane and after attack the inclined-plane and the scraping plane forms the angle between 13 ° and 17 °.The applicant confirms, uses the value in this scope, and the dust suction on weaving ground is effective especially.

The invention still further relates to a kind of dust catcher, this dust catcher comprises that at least one is above-mentioned according to suction nozzle base of the present invention.

Description of drawings

Through the detailed description of the embodiment of the present invention of reading shown in the accompanying drawing and providing as non-limiting embodiment, will more clearly understand other features and advantages of the present invention, in the accompanying drawings:

Fig. 1 illustrates the profile according to cleaner suction nozzle base of the present invention.

The specific embodiment

Fig. 1 illustrates the profile of the cleaner suction nozzle base 100 that is used to clean weaving ground.Base 100 has the whole suction passage of arranging along base 100 10.This passage is forwardly defined by preceding scraping edge 11, is defined by back scraping edge 12 at the rear portion.Have particularly according to imposing on the value that drag losses that the air that enter in the suction passage 10 flow is confirmed by step-down in the suction passage 10 of the air-breathing generation of duster motor and air mass flows.This drag losses depends on path, and this path is to stipulate according to the profile of base 100.The air that gets into through the place ahead flows process under preceding scraping edge 11, but also under sealing plate 20, passes through.Sealing plate 20 is included in the scraping plane that is limited at two scraping edge 11 and 12.With the width requirement air of the sealing plate 20 of ground contact flow to few on the corresponding width of plate 20 through weaving ground.Therefore, the width of plate 20 increases more, and drag losses just increases more, and therefore, the pressure in the suction passage 10 just reduces more.As a result, the applying power that on base, is produced by atmospheric pressure increases, and is increased by the scraping of preceding scraping edge with

back scraping edge

11 and 12 pairs of ground.Yet the width value of plate 20 should be very not big, because the particle that from fiber, takes out through scraping

edge

11 and 12 is inhaled into subsequently, for this reason, should make the flow of the air that sucks have minimum of a value.In addition, it is also noted that plate 20 distributes applying power on the ground, therefore limited base in weaving ground insertion and for promoting the needed power of suction nozzle.Move up in order also to be convenient to base 100, inclined-plane 25 is arranged in the anterior of plate and stops with arcuate member 26.Because its juxtaposition onboard, inclined-plane 25 will be the resistance of the fiber on the weaving ground of process under the plate 20 except reducing, and also guides air and the drag losses of institute's inlet flow is worked.The parameter that the process that air is flowed exerts an influence is inclined-plane 25 and the scraping angle α that the plane became and the length on inclined-plane 25.At the rear portion of suction passage 10, scraping edge 12 is connected with inclined-plane 35, and inclined-plane 35 stops with arcuate member 36.The power that inclined-plane 35 is limited in base 100 when retreating allows base contact gradually with the hair on weaving ground to be cleaned, but the length on inclined-plane 35 with and also the air mass flow of the rear portion entering through suction passage 10 is exerted an influence with the angle β that the plane was become of swiping.

Should be appreciated that, concerning those skilled in the art, can under the situation of the scope of the invention that does not break away from the accompanying claims defined, carry out tangible various change and/or improvement the embodiment of the present invention described in this specification.Particularly, the present invention has mentioned the base with a passage, but can consider to apply the present invention to have the base of a plurality of suction passages.

Claims

1. the base of a cleaner suction nozzle (100); Said base (100) comprises at least one ground suction passage (10); Said suction passage (10) is forwardly defined by scraping edge (11,12) with the rear portion, it is characterized in that said base (100) comprises the mechanism that is used to limit said base thrust on the ground; Said mechanism be used for the flow that is drawn into the air in the said suction passage (10) and governor motion interaction that pressure is regulated; Confirm the drag losses of the air of process under preceding scraping edge (11) in advance, said scraping edge (11,12) limits the scraping plane, and; Be used for flow that is drawn into the air in the said suction passage (10) and the said governor motion that pressure is regulated are comprised sealing plate (20); Said sealing plate (20) is included in the said scraping plane and is defined by scraping edge (11) before said, and, before comprising, the said mechanism that is used to limit said base (100) thrust on the ground attacks inclined-plane (25); Attack the front portion that inclined-plane (25) is arranged in said sealing plate (20) before said, form angle less than 20 ° with said scraping plane.

2. the base of cleaner suction nozzle according to claim 1 (100) is characterized in that, be used to limit said base (100) setback force on the ground after attack inclined-plane (35) and be arranged in back scraping edge (12) afterwards.

3. according to the base (100) of each described cleaner suction nozzle in claim 1 or 2; The said suction passage (10) of said base (100) has a length L c; And it is characterized in that said plate (20) has a width Lp, this width is greater than the value that is limited formula Lp＞570/Lc.

4. according to the base (100) of each described cleaner suction nozzle in claim 2 or 3; It is characterized in that; Attack before said inclined-plane (25) and said after attack inclined-plane (35) and said scraping plane and form the angle between 10 ° and 20 °, and attack before said inclined-plane (25) with said after attack inclined-plane (35) and be connected with arcuate member (26,36) with the relative end of edge of swiping at it.

5. according to base (100) as the described cleaner suction nozzle of claim 4 of the dependent claims of claim 2; It is characterized in that; The arcuate member (26) of attacking the inclined-plane before said is between 1 millimeter and 4 millimeters, and the arcuate member (36) of attacking the inclined-plane after said is between 2 millimeters and 8 millimeters.

6. according to the base (100) of each described cleaner suction nozzle in the claim 2 to 5; It is characterized in that; Said sealing plate (20) has the width between 4.5 millimeters and 5.5 millimeters; And, attack before said inclined-plane (25) and said after attack inclined-plane (35) and said scraping plane forms the angle between 13 ° and 17 °.

7. dust catcher, said dust catcher comprises at least one base according to each described suction nozzle in the claim 1 to 6 (100).