CN102082480A - Motor cover - Google Patents

Motor cover Download PDF

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Publication number
CN102082480A
CN102082480A CN2009103105625A CN200910310562A CN102082480A CN 102082480 A CN102082480 A CN 102082480A CN 2009103105625 A CN2009103105625 A CN 2009103105625A CN 200910310562 A CN200910310562 A CN 200910310562A CN 102082480 A CN102082480 A CN 102082480A
Authority
CN
China
Prior art keywords
motor
exhaust
motor cover
cover
hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2009103105625A
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Chinese (zh)
Inventor
肖宗亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Tianjin Appliances Co Ltd
Original Assignee
LG Electronics Tianjin Appliances Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Tianjin Appliances Co Ltd filed Critical LG Electronics Tianjin Appliances Co Ltd
Priority to CN2009103105625A priority Critical patent/CN102082480A/en
Publication of CN102082480A publication Critical patent/CN102082480A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a motor cover for accommodating a motor, which comprises a motor front cover and an air filter hood; wherein the air filter hood comprises a cylindrical meshed exhaust part on which a ventilation hole is formed; an end part of the exhaust part is provided with a fixed baffle and an exhaust hole, and the outside of the end part is fixedly connected with an annular resonant chamber; a cyclone former is arranged between the motor and the motor front cover. The inhaled air stream forms cyclone by arranging the cyclone former between the motor and the motor front cover; wind power is consumed in the cyclone manner and a trace quantity of dust in the wind power is led to the inner side of the resonant chamber, such that the reduction of wind power results in reduction of volume of noise; meanwhile, through holes with different diameters are formed on the inner side surface of the resonant chamber to broaden the effective silence frequency band of the resonant chamber; furthermore, a frequency-lowering groove is arranged in the inner side of the ventilation hole of the meshed exhaust part, so that the divergence of air stream is improved, the air outlet frequency is altered and the voice quality of the vacuum cleaner is greatly improved.

Description

Motor cover
Technical field
The present invention relates to a kind of dust catcher; Particularly relate to a kind of motor of dust collector cover.
Background technology
Usually, vacuum cleaner is to utilize vacuum to produce suction to suck air, makes air flow through various filters, airborne foreign matter is filtered the device in the cleaning chamber.
In general, vacuum cleaner mainly comprises aspirator and suction line, with motor and blower fan is that the aspirator that dominant shape becomes is arranged in the body, suction line comprises suction nozzle and air intake duct, and the air entry of the oriented under shed of suction nozzle and telescoping tube and flexible pipe by air intake duct communicate with the air inlet of body inner blower.During the dust catcher running, the impeller high speed rotating of motor drives blower fan discharges the air in the dust catcher, forms instantaneous vacuum in dust catcher, and forms a quite high Negative Pressure Difference between the ambient atmosphere.Under the effect of this Negative Pressure Difference, near the dust the suction nozzle sucks in the dust bucket in the body by air entry together with air.The air that contains dust after filtering, flows back to the dust catcher outside from air outlet again in the body dust bucket.Like this, just reach the effect of dust out, clean floor.The suction rate of vacuum cleaner is divided into a plurality of class of operating control, adapts to the scope of operation of different cleaning objects such as ground, bed surface, sofa, corner, so that aspirate dust everywhere better.
Press the use and the moving method of vacuum cleaner, can be divided into horizontally, vertical, portable etc., little foreign matters such as dust clean: ground such as vertical easy cleaning woollen blanket with comparalive ease in the wherein horizontal family that is mainly used in; The portable narrow positions such as step, desktop of easily cleaning.
In addition, vacuum cleaner can be divided into filer element type, cyclone type to the mode that foreign matters such as dust, hair filter by it.Wherein filer element type makes the air that contains foreign matter flow through a kind of dry goods dust bag, foreign matter filtered to change dust bag periodically, and cyclone type makes the suction air generation swirling flow that contains foreign matter, fall the bottom surface with sucking the deadweight effect tenesmus of airborne foreign matter in rotary course, do not need dust bag, its use amount just constantly rises.
For present Wet-dry dust catcher, the air-flow that has dust is sucked into cyclone separator inside through brush, dust is separated from the gas under action of centrifugal force, the gas that is mingled with micro-dust is closely gone into internal body after by filter, advance through hole then and entered motor cavity inside, after discharging from tap, enter in the air after filtering once more via the filter that is arranged on the dust catcher body afterbody.
Dust catcher is vibrations that reduce motor itself and the noise that flabellum sends in the course of the work, and most of dust catcher adopts motor cover, and various forms of sound-absorbing materials are set in motor cover, but effect is unsatisfactory.
So just be badly in need of a kind of method that can effectively reduce dust catcher work noise volume and frequency.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the prior art shortcoming, provides a kind of and can effectively reduce dust catcher work noise loudness, reduces the motor cover structure of high frequency noise.
The technical solution adopted in the present invention is:
A kind of motor cover, in order to motor is contained in it, comprise the motor front shroud, the filter fan housing, described filter fan housing comprises the cylindrical netted exhaust portion that offers air vent hole on it, the one end is formed with fixed dam and steam vent, is fixedly connected with ring resonator in the outside of this end, is provided with the whirlwind former between motor and motor front shroud.
Described whirlwind former comprises annular deck, and described annular deck is formed with an air inlet, and the disconnected edge of the top board of air inlet one side bends downwards and extends and with spiral extension, and has side plate to connect between helical structure and the top board.
Offer through hole on the inner surface of resonant cavity, big or small identical on the same circumference of described through hole, the through hole radius diminishes from outside to inside successively.
Resonant cavity and netted exhaust portion junction are formed with slit.
The place, blow vent inside edge of netted exhaust portion is provided with the frequency reducing groove, and the size of described frequency reducing groove is corresponding with high frequency noise.
Described frequency reducing groove is rectangle or semicircle.
The bottom of frequency reducing groove is a ramp structure, progressively carries out the transition to netted exhaust portion internal face.
The invention has the beneficial effects as follows: motor cover structure of the present invention, by between motor and motor front shroud, the whirlwind former being set, make the air-flow of suction form whirlwind, mode by whirlwind consumes wind energy and the micro-dust that will be mingled with in it guides to resonant cavity inside, the reduction of wind energy has just reduced the volume of noise, on the medial surface of resonant cavity, be formed with simultaneously the through hole of different-diameter, enlarge its effective noise elimination frequency band, and the frequency reducing groove is set in the air vent hole inboard of netted exhaust portion, when improving the air-flow diversity, change the frequency of giving vent to anger, can improve the sound quality of dust catcher greatly.
Description of drawings
Fig. 1 is the schematic diagram of motor cover installment state of the present invention;
Fig. 2 is an internal structure schematic diagram shown in Figure 1;
Fig. 3 is a cross sectional view shown in Figure 1;
Fig. 4 is whirlwind former of the present invention and filter mantle structural representation;
Fig. 5 is a filter mantle structural representation of the present invention;
Fig. 6 is a gasket construction stereogram of the present invention;
Fig. 7 is the rearview of gasket construction shown in Figure 6;
Fig. 8 is the local enlarged diagram of filter mantle of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments motor cover structure of the present invention is described in further detail:
Shown in Fig. 1-5, motor cover of the present invention comprises motor front shroud 12, filter fan housing 13 and whirlwind former 11.Motor 10 comprises the cylindrical structural of two coaxial settings, and the inner top center place that the cylinder with large diameter end 101 of running wheel is set is formed with boss 103, boss 103 middle parts are formed with suction hole 104, and steam vent 105 belows of large diameter cylinder 101 are provided with spacing fin or protruding (not shown).Be provided with rotor stator and control element etc. in the small diameter cylinders end 102.
Motor front shroud 12 is the columnar structured of end sealing, and this columnar structured blind end middle part is formed with manhole, and described manhole just limits described boss 103 in it, realizes the spacing of motor 10 fixed.
Described filter fan housing 13 comprises columnar netted exhaust portion 131, offer uniform through hole 130 on the netted exhaust portion 131 so that air communication is crossed in the cavity of going forward side by side between netted exhaust portion 131 and the motor 10 small diameter cylinders part, when air-flow fast by the time, the drive part of motor is played cooling effect; One end center of netted exhaust portion 131 is formed with motor fixed dam 136, and described fixed dam 136 centers are formed with the fixing hole that is complementary with fixed-bearing 134, and the fixing hole both sides are formed with steam vent 135.Wherein the structure of fixed-bearing 134 as shown in Figure 6 and Figure 7, the one side is formed with and the corresponding protruded stigma of the fixing hole of motor 1341 and motor shaft can be held depression 1340 in it; On the another side of correspondence, be formed with the boss 1342 of the fixing hole that can closely be embedded in fixed dam 136, utilize this gasket construction and can fixedly connected between baffle plate motor small diameter cylinders end and filter mantle.
The outside that described exhaust portion 131 is formed with fixed dam 136 ends is fixedly connected with ring resonator 132, resonant cavity 132 inside are provided with sponge or other via hole sound-absorbing materials, can store the dust granule that enters in it, and be provided with at the other end of resonant cavity 132 can be to resonant cavity 132 sealings or the end cap of opening 133.Open end cap 133 and can clean or change sponge resonant cavity 132 inside, offer a plurality of through holes on the perpendicular medial surface of resonant cavity 132 and netted exhaust portion 131, the aperture that wherein is positioned at resonant cavity 132 same peripheries is identical, and through-hole aperture diminishes from outside to inside gradually along the radial direction of resonant cavity 132, resonant cavity 132 is formed with a plurality of circular arc slits so that the dust of separating enters resonant cavity 132 along wall with netted exhaust portion 131 wall adjacents, it is more little to be that the through hole of resonant cavity 132 encloses the aperture more toward in, until forming narrow crack closing on exhaust portion 131 places, to enlarge its effective noise elimination frequency band, effective binding energy of multiple like this effect improves the sound quality of dust catcher greatly.
Whirlwind former 11 comprises annular top board 111, described top board 111 is formed with air inlet 110, air inlet 110 1 side top board 111 disconnected edge places bendings downwards continue downwards to extend forward with spirality, between spiral extension section 112 and the upper plate 111 vertical clapboard is arranged, helical structure and the cylindrical structure of vertical clapboard and identical with the internal diameter of annulus top board 111, wherein helical structure is advisable to extend the thoughtful circumference of semicircle.
It should be noted that, the internal diameter of described whirlwind former 11 is identical with the external diameter of motor 10 cylinder with large diameter ends 101, and the external diameter of netted exhaust portion 131 is identical or slightly little with the external diameter of motor cylinder with large diameter end 101, and the external diameter of whirlwind former 11 is identical or small with the internal diameter of motor front shroud 12.
Like this when assembling, earlier whirlwind former 11 closely is socketed in motor cylinder with large diameter end, and it is spacing by fin that is arranged on the cylinder with large diameter end surfaces or salient point, then the motor that is fixed together is assembled with motor front shroud 12 mutually with the whirlwind former, the fixing hole that fixed-bearing 134 protruded stigmas are inserted motor realizes that both is fixedly connected, because the external diameter of whirlwind former 11 is identical or small with the internal diameter of motor front shroud 12, the ring flat-plate outer rim of whirlwind former 11 seals applying mutually with the inwall of motor front shroud 12, has guaranteed its air-tightness.Fix for motor provides radial support again simultaneously, guarantee its stability, reduce the generation of vibrations.To filter fan housing 13 then inserts in the motor front shroud 12, the top of its netted exhaust portion 131 holds on the handing-over vertical plane of the cylinder with large diameter of motor 10 part and small diameter cylinders part, be embedded in whirlwind former 1 inside simultaneously, this moment, the medial surface of resonant cavity 132 contacted with the lower limb of motor front shroud 12, the boss of fixed-bearing just is fixedly embedded in the fixing hole of fixed dam, with fixing between resonant cavity 132 and the motor front shroud 12, finish the assembling of motor cover then.Motor front shroud 12 and the mode of fixedlying connected between the resonant cavity 132 can adopt on the sidewall of motor front shroud 12 extends the side plate that is provided with fixing hole, it is connected with resonant cavity 132 screw, perhaps take resonant cavity partly to be inserted into motor front shroud inside, then by other fixed forms such as screw.Put into sponge or other filtering materials in resonant cavity 132 inside then, cover end cap 133 and get final product.
To further describe structure and principle by the course of work of the present invention below:
Motor and motor cover after the assembling are inserted dust catcher inside, when dust catcher is worked, the machine operation wheel rotation forces air-flow to enter motor internal from air entry, discharge via the side exhaust outlet that is formed on the cylinder with large diameter part then, continuing to discharge gas impels air-flow to enter air inlet 110 at a high speed, and along helical structure formation whirlwind, move in the cyclonic chamber of high speed rotating geostrophic wind between netted exhaust portion and motor front shroud, air-flow separates fine dust while rotating the consumption energy of flow, dust finally enters resonant cavity by through hole and stores in it, and air-flow enters the air draft portion of filtering between fan housing and the motor by netted exhaust portion gradually, discharges by the air-flow tap.
It is motor cover structure of the present invention, by between motor and motor front shroud, the whirlwind former being set, make the air-flow of suction form whirlwind, mode by whirlwind consumes wind energy and the micro-dust that will be mingled with in it guides to resonant cavity inside, and the arranged outside of resonant cavity has openable end cap, be convenient to clear up inner dust, improved ease of use.On the medial surface of resonant cavity, be formed with the through hole of different-diameter, enlarge its effective noise elimination frequency band, can improve the sound quality of dust catcher greatly.
Further, in order to strengthen the decrease of noise functions of motor cover of the present invention, as shown in Figure 8, edge's one side in the through hole 130 internal face sides of netted exhaust portion is offered a plurality of frequency reducing grooves 20, its quantity can make the operational environment of motor set respectively, frequency reducing groove 20 be shaped as rectangle or semicircle, the size of frequency reducing groove obtains according to the sharp and rounded sounds frequency computation part, usually the width of frequency reducing groove is 3-5mm, the degree of depth is 1-3mm, and the bottom of frequency reducing groove is a ramp structure, finally carries out the transition to the internal face of netted exhaust portion to maintain an equal level mutually.It is mobile that described frequency reducing groove structure can make air-flow disperse first, second can change the frequency of giving vent to anger, and the high-frequency change of tune becomes low-frequency sound, greatly reduced the sense of discomfort that high frequency noise causes the user.
In sum, motor cover structure of the present invention, by between motor and motor front shroud, the whirlwind former being set, make the air-flow of suction form whirlwind, mode by whirlwind consumes wind energy and the micro-dust that will be mingled with in it guides to resonant cavity inside, the reduction of wind energy has just reduced the volume of noise, on the medial surface of resonant cavity, be formed with simultaneously the through hole of different-diameter, enlarge its effective noise elimination frequency band, and the frequency reducing groove is set in the air vent hole inboard of netted exhaust portion, when improving the air-flow diversity, change the frequency of giving vent to anger, can improve the sound quality of dust catcher greatly.

Claims (7)

1. motor cover, in order to motor (10) is contained in it, comprise motor front shroud (12), filter fan housing (13), it is characterized in that: described filter fan housing (13) comprises the cylindrical netted exhaust portion (131) that offers air vent hole (130) on it, the one end is formed with fixed dam (136) and steam vent (135), is fixedly connected with ring resonator (132) in the outside of this end, is provided with whirlwind former (11) between motor (10) and motor front shroud (12).
2. motor cover as claimed in claim 1, it is characterized in that: described whirlwind former (11) comprises annular deck (111), described annular deck (111) is formed with an air inlet (110), the disconnected edge of the top board (11) of air inlet (110) one sides bends downwards and extends and with spiral extension, and the side plate connection is arranged between helical structure (112) and the top board (111).
3. motor cover as claimed in claim 1 is characterized in that: offer through hole on the inner surface of resonant cavity (132), and big or small identical on the same circumference of described through hole, the through hole radius diminishes from outside to inside successively.
4. motor cover as claimed in claim 3 is characterized in that: resonant cavity (132) is formed with slit with netted exhaust portion (131) junction.
5. as each described motor cover among the claim 1-4, it is characterized in that: the place, blow vent (130) inside edge of netted exhaust portion (131) is provided with frequency reducing groove (20), and the size of described frequency reducing groove (20) is corresponding with high frequency noise.
6. motor cover as claimed in claim 5 is characterized in that: described frequency reducing groove (20) is rectangle or semicircle.
7. motor cover as claimed in claim 5 is characterized in that: the bottom of frequency reducing groove (20) is a ramp structure, progressively carries out the transition to netted exhaust portion (131) internal face.
CN2009103105625A 2009-11-27 2009-11-27 Motor cover Pending CN102082480A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009103105625A CN102082480A (en) 2009-11-27 2009-11-27 Motor cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009103105625A CN102082480A (en) 2009-11-27 2009-11-27 Motor cover

Publications (1)

Publication Number Publication Date
CN102082480A true CN102082480A (en) 2011-06-01

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ID=44088254

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009103105625A Pending CN102082480A (en) 2009-11-27 2009-11-27 Motor cover

Country Status (1)

Country Link
CN (1) CN102082480A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102810933A (en) * 2011-06-03 2012-12-05 乐金电子(天津)电器有限公司 Muffler, motor casing and dust collector with motor casing
CN102894931A (en) * 2011-07-29 2013-01-30 莱克电气股份有限公司 Dust collector with improved motor cover
CN103169423A (en) * 2011-12-20 2013-06-26 乐金电子(天津)电器有限公司 Motor cabin with variable frequency resonant cavity
CN103381080A (en) * 2012-05-02 2013-11-06 乐金电子(天津)电器有限公司 Low-noise motor box of dust collector
CN104414587A (en) * 2013-09-06 2015-03-18 江苏美的春花电器股份有限公司 Dust collector and air inlet device of dust collector
CN104545698A (en) * 2013-10-28 2015-04-29 江苏美的春花电器股份有限公司 Motor air collection hood for dust collector, dust collector and air suction device of dust collector

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102810933A (en) * 2011-06-03 2012-12-05 乐金电子(天津)电器有限公司 Muffler, motor casing and dust collector with motor casing
CN102894931A (en) * 2011-07-29 2013-01-30 莱克电气股份有限公司 Dust collector with improved motor cover
CN103169423A (en) * 2011-12-20 2013-06-26 乐金电子(天津)电器有限公司 Motor cabin with variable frequency resonant cavity
CN103169423B (en) * 2011-12-20 2016-09-07 南京乐金熊猫电器有限公司 A kind of motor bin with variable frequency resonator
CN103381080A (en) * 2012-05-02 2013-11-06 乐金电子(天津)电器有限公司 Low-noise motor box of dust collector
CN104414587A (en) * 2013-09-06 2015-03-18 江苏美的春花电器股份有限公司 Dust collector and air inlet device of dust collector
CN104545698A (en) * 2013-10-28 2015-04-29 江苏美的春花电器股份有限公司 Motor air collection hood for dust collector, dust collector and air suction device of dust collector

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Date Code Title Description
PB01 Publication
C06 Publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20110601

C02 Deemed withdrawal of patent application after publication (patent law 2001)