CN101061932A - Cyclone Handheld Vacuums - Google Patents

Abstract

The rechargeable hand-held vacuum cleaner of the present invention has a detachable dirt cup portion comprising two parallel cyclones and two dirt collecting chambers. The dust collecting chamber is connected to the cyclone body via a dust discharge hole. Because the design of two parallel cyclones is adopted, a smaller cyclone can be used, the air performance is not influenced, and meanwhile, the better dust separation performance can be realized. And the cyclone body is not provided with a filter or a dust collecting chamber, so that the dust collecting chamber can be cleaned in a more convenient and more sanitary way. The use of two parallel cyclones increases the efficiency of the cyclonic action so that only a very simple filter is required to protect the impeller within the cleaner. Therefore, based on the above configuration, there is no case where the filter is gradually clogged, which means that the suction power can be maintained at a fixed level.

Description

Whirlwind hand-held type vacuum dust collector

Technical field

The present invention relates to a kind of chargeable hand-held vacuum cleaner, relate more specifically to a kind of the chargeable hand-held vacuum cleaner of parallel cyclone as separator.

Background technology

Typical hand-held vacuum cleaner has the motor that is connected with impeller, and described motor can be driven by main power source or rechargeable battery, and described impeller can produce an air-flow, and by suction nozzle, the dirt cup of flowing through again enters impeller to described air-flow then earlier.In dirt cup, great majority can be provided with the simple filtering device, and described filter is combined together application with the cyclonic motion of air sometimes, is used for making dirt to separate from air with dust.Another filter can be arranged on after the impeller, is used for filtering before waste gas is discharged dust catcher fine dust or carbon dust from motor.

The problem that the typical handheld vacuum cleaner of simple filtering device is set in dirt cup is that when filter received too much dust, filter can be blocked soon, thereby reduced the performance of dust catcher.Make the user must remove and clean described filter like this, this is one makes the user feel inconvenient step.

A mutually related problem is, filter is arranged in the dirt cup usually, and in order to clean dirt cup, the user must at first remove filter from dirt cup.This step usually can make environment dirty, and user's the hand of may making dirty, thereby causes hygienic issues.

Another problem at the typical handheld vacuum cleaner that has been equipped with so-called whirlwind effect is that the whirlwind effect of low usefulness makes most of dirt and dirt accumulation on filter.Along with filter is stopped up by increasing dust, the corresponding forfeiture gradually of suction.In described dust catcher, the user still must often remove and cleaning and filtering, thereby makes the purpose of using cyclone be queried.

Cyclone type is separated in known in the art.It is applied in the vacuum cleaner also is known (for example, in EP 0042723B).Single cyclone is set in the upstream also to be described in US 3425192 with the application that a plurality of parallel cyclones are set in the downstream.Using two or more parallel cyclones can take less total air drag out of and improve the cyclone type separating property.The separating property of improving comes from following principle, and for a given suction source, an air path can be divided into several air path with small cross sections area, and keeps identical overall flow rate simultaneously.This means that the internal diameter of the cyclone that each is independent can reduce, like this, when airborne particle just has bigger radial acceleration during by cyclone with rotation mode.Therefore, with respect to only using single cyclone, use a plurality of cyclones can make more tiny dust also can from air, separate.But because the granular size that vacuum cleaner sucked differs, also there is real drawback in described design.Some volumes can be stuck greater than the particle of the air path that enters indivedual cyclones.In order to overcome this problem, the layout that single big pre-cyclone back connects a plurality of less parallel cyclones is used.

Existing a large amount of patent comes forth on this theme.EP 0042723 has discussed two cyclones of single cyclone or arranged in series.The air path that GB 2372435 described a plurality of separators, connect their and with the layout of the relation of the outer surface of vacuum cleaner.And WO 00/24519 is another example of describing the characteristic of air path with narrower range.

Exist bispin wind separator vacuum cleaner on the market, one is upright mode, and one is the cylinder mode.Two are feature with the bispin wind separator that is arranged in parallel all, and do not have the upstream separator stage.Two cyclones have straight body, and are communicated with independent dust storage chamber.The air intake that leads to cyclone is a T shape, also tangentially enters among these two cyclones thereby make air be divided into two strands other air-flows.US 3425192 has also described the straight and parallel cyclone of application in second stage.So parallel cyclone is well known in the art, and the present invention also is the operation principles of building based on relevant.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of hand-held vacuum cleaner of improvement, mainly comprises housing parts and dirt cup part, and whirlwind effect efficiently is provided, totally and easily dust is removed process and constant intake performance.

Main housing portion is made up of the both sides shell, and this both sides shell is kept together by fastener.The top of housing is divided into a handle easily, and described handle can match with another parts, thereby the grip effect of comfortable softness is provided.Be arranged on and within this both sides shell be: motor is connected to impeller; Rechargeable battery pack; The air intake part is used for partly being directed to impeller in from dirt cup air; Switch; Relieving mechanism is used to discharge the dirt cup part; And the electronic building brick that is used for control device.Air intake partly has and is used to guide air to enter the funnel shaped part at impeller center, and described funnel shaped part is equipped with guard bar, contacts impeller to prevent the user.Detachable battery lid is connected to the main casing downside, so that for Recycling or repair purpose and remove battery.The base section of main casing has the groove of depositing the accessory instrument.And battery cover has along the slit of body longitudinal extension, and these slits serve as jockey, with coupling, and barre annex for example.

Dirt cup partly is included in the dirt cup that wherein forms the air intake suction nozzle, the cyclone body of column geometry, and described body has two parallel cyclones and independent dust receiving chamber and comprises the cyclone top section of two return ducts.Return duct has a tapering point and air intake slit, forms a rough safety filtering over cap.Slit can by other optional thing such as grid or similarly filter replace or be used.The cyclone top also has allows two strands of cavitys that the air return flow path is assembled therein, and described cavity is suitable for holding filter.When the hard object of point or hard thing during by the cyclone system, described filter can be protected impeller and motor.The form that the shaped design Cheng Kerang accessory tool of suction nozzle inserts.

In order to obtain good suction and whirlwind performance, Mi Feng air path is important fully.Therefore, critical piece, dirt cup and the cyclone body of dirt cup part forever combine.And also closely cooperate between cyclone body and the cyclone top.

During normal running, vacuum cleaner of the present invention operates in mode described below.By battery-powered motor and the impeller given, and suck the air that has dust by suction nozzle.These air arrive the two crotches of T shape through going into air pipe passway up to it, and air-flow is divided into two strands here, and per share air-flow all tangentially is directed in the cyclone.In each cyclone, air and dust granule advance along the cylindrical body spiral, make heavier-than-air dirt particles see through centrifugal force and outwards move.Be provided with a hole otch at the cyclone body end, dust granule escapes into described hole otch by effect of inertia, and simultaneously, the air that cleaned continues to follow eddy current and enters return duct.Dust granule is collected in respectively in two dust storage chambers, and each dust storage chamber is used for a cyclone, and is connected to cyclone body through described hole otch.

The air that cleaned flows along two return ducts, and assembles in the cavity in the cyclone downstream after the cyclone top, and described cyclone top can receive a filter.Any object of described filter in order to be separated by cyclone not yet in the removal air, and serve as the safeguard protection part that is used for impeller and motor.The fineness of described filter is not enough to stop any small particle.The cyclone top is connected to main body via the gas-tight seal bar.The air that cleaned enters by falred entrance and by impeller, enters the body of dust catcher again.In main casing, around the wall formation long air path of motor, discharge main casing in order to the guiding air with battery, help cooling-part and minimizing noise simultaneously.

Partly be used to the dust of turning and gathering if will remove dirt cup, the user need so just discharge dirt cup according to the button of handle front portion.And the user need not contact or remove any part that contacts with dust or filter, the dirt cup of just can removing and turn.This is the wherein improvement of one side of the present invention.Another improvement is the efficient of cyclone; Because of most dust accumulation in dust receiving chamber independently, thereby need be at each back cleaning and filtering that uses.It is relevant with intake performance further improving; Because most dust is separated by cyclone type rather than filters in the air, thus there is not the situation of blocking filter basically, Gu this user will experience constant intake performance.

Description of drawings

Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing, wherein:

Fig. 1 is the perspective view according to the hand-held cleaning vacuum plant of preferred embodiment structure, and wherein the dirt cup part is connected with main casing;

Fig. 2 a is the perspective view of the dirt cup part of cleaning vacuum plant;

Fig. 2 b is the perspective view of the cleaning vacuum plant among the separated Fig. 1 of dirt cup part;

Fig. 3 is the side cross-sectional, view of the cleaning vacuum plant among Fig. 1;

Fig. 4 is another side cross-sectional, view of the cleaning vacuum plant among Fig. 1, and the locking mechanism between dirt cup part and the main casing is shown;

Fig. 5 is the side cross-sectional, view that the dirt cup part of the cleaning vacuum plant among Fig. 2 a of filter and falred entrance is housed;

Fig. 6 is the top cross-sectional view that the dirt cup part of the cleaning vacuum plant among Fig. 2 a of filter and falred entrance is housed;

Fig. 7 is the perspective view that has connected the cleaning vacuum plant of floor brush and barre;

Fig. 8 is the traditional type cyclone system of filter for installation in cyclone body.

Reference numeral	Chinese
		1	Main casing
2	Handle
		3	Release knob
4	The dirt cup release-push
		5	Slit
6	Dirt cup

7	Cyclone body
		8	Go into the gas access portal
9	Dust storage chamber
		10	Battery cover
11	Accessory
		12	Removable pin
13	Steady pin
		14	Battery pack
15	Motor
		16	Impeller
17	Groove
		18	Filter
19	The dust storage chamber sealing strip
		20	Go into the gas passage
21	Midfeather
		22	The filter sealing strip
23	Push rod
		24	Hinge
25	The dirt cup lock
		26	Spring
27	Falred entrance
		28	Switch
29	The PCB assembly
		30	Cavity
31	Cavity
		32	Pre-motor filter
33	Contact surface
		34	The surface
35	The dust storage chamber opening
		36	Convex surface
37	Return duct
		38	Return duct
39	Dust
		40	The cyclone opening
41	The cyclone opening
		42	Eddy current
43	Eddy current

44	The cyclone end
		45	The cyclone end
46	Cyclone
		47	Cyclone
48	The return duct end
		49	The return duct end
50	Guard bar
		51	The two crotches of T shape
52	Fixation wall
		53	Slit
54	Slit
		55	Wall
56	End wall
		57	End wall
58	Tapering point
		59	Tapering point
60	Air is assembled the chamber
		61	Bar
62	Hinge
		63	The eddy current stopper
64	The eddy current stopper
		65	The separator top
66	Floor brush
		67	Barre
68	Cyclone body

The specific embodiment

As shown in fig. 1, cleaning vacuum plant mainly comprises main casing 1 and dirt cup 6.Dirt cup 6 forms the part of vacuum cleaner body when being connected to main casing 1.The top of main casing 1 is a handle 2 that comprises dirt cup release-push 4, goes into the front end that gas access portal 8 is positioned at dirt cup 6, and the base section of dirt cup 6 forms dust storage chamber 9.In a preferred embodiment, dust storage chamber 9 is made by transparent material, accumulates in inner amount of dust thereby can be observed.Detachable battery lid 10 is connected to the rear portion base section of main casing 1, so that for Recycling or repair purpose and remove battery.Accessory 11 can be in that the time spent not be left the downside of main casing 1 in.The both sides of main casing 1 all have the slit 5 as exhaust vent.One cyclone body 7 is arranged in dirt cup 6, and forms the part on the surface of cleaning vacuum plant.In a preferred embodiment, cyclone body 7 is made by transparent material, thereby can be observed the whirlwind effect of cyclone body 7 inside.Can there be a plurality of cyclones in the cyclone body 7.In a preferred embodiment, there are two cyclones.

Fig. 2 a and Fig. 2 b illustrate the dirt cup 6 and the main casing 1 of cleaning vacuum plant respectively.Fig. 2 a illustrates the dirt cup 6 of separating with main casing 1, can see, dust storage chamber 9 comprises dust storage chamber opening 35 and midfeather 21.Midfeather 21 is divided into two parts with the cavity of dust storage chamber 9, forms cavity 30 and cavity 31.As shown in Fig. 2 a, separator top 65 packs in the top of dirt cup 6.The surface 34 that separator top 65 has return duct end 48, return duct end 49 and centered on by filter sealing strip 22.Filter sealing strip 22 is preferably made by elastomeric material.

Fig. 2 b illustrates the main casing 1 of the cleaning vacuum plant of removing dirt cup 6.Filter 18 is positioned at the upper part of the contact surface 33 on the main casing 1.In a preferred embodiment, filter 18 is made by gas permeable materials such as for example foamed plastics.Removable pin 12 is positioned at the front of the handle 2 on the preceding end face of main casing 1.The motion of removable pin 12 response dirt cup release-pushes 4.Convex surface 36 protrudes forward in the following part position of the front portion of main casing 1, and dust storage chamber sealing strip 19 is around the edge setting of convex surface 36.Dust storage chamber sealing strip 19 is preferably made by for example rubber elastomeric material.

Sectional view of the present invention shown in Fig. 3.In main casing 1, there are battery pack 14 and the motor 15 that is connected to impeller 16.The falred entrance 27 that impeller 16 is provided with guard bar 50 covers, and contacts impeller 16 to prevent the user.Handle 2 is provided with release knob 3, and described release knob 3 meshes with switch 28, is arranged on the PCB assembly 29 at rear positions place in the dust catcher with control.Below main casing 1, there is the groove 17 that can be used for depositing accessory 11.

The wherein internal structure of any one cyclone is described below.In Fig. 3, illustrate one be positioned at dirt cup 6 inside go into gas passage 20, the one end to going into gas access portal 8 other end to the two crotches 51 of T shape.Going into gas passage 20 is communicated with cyclone 46 through the cyclone opening 40 at the two crotches 51 of T shape.There are return duct 37 and cyclone end 44 in cyclone 46 inside.During normal running, integrate with dirt cup 6 with the separator top 65 that return duct 37 is connected with return duct 38 (not shown), to finish the cyclone system.Have filter 18 between dirt cup 6 and falred entrance 27, when the hard object of point or hard thing during by the cyclone system, described filter 18 can be protected impeller 16 and motor 15.For cleaning purpose, separator top 65 can be removed from dirt cup 6.

Fig. 3 illustrates the general operation principles of the air-flow in the cleaning vacuum plant.When switch 28 was in " opening " position, PCB assembly 29 control battery pack 14 were to provide electric energy to motor 15.Motor 15 is rotary blade 16 then, is going into gas access portal 8 generation suction, and is having the air of dust and make it enter cyclone 46 and cyclone 47 (not shown) by going into 20 suctions of gas passage.The air that has dust then sees through cyclonic separation and is cleaned, and flows into main casing 1 by filter 18 and falred entrance 27.Falred entrance 27 is assembled the air downstream path of all cyclones, and steering current enters the center of impeller 16.In main casing 1, around the air of motor 15 with the long air path guiding cleaning of the wall formation of battery pack 14, this helps cooling-part and minimizing noise.Finally, air is discharged housing by slit 5.

Dirt cup shown in Fig. 46 is connected to main casing 1 by steady pin 13 and removable pin 12, the motion of described removable pin 12 response dirt cup release-pushes 4.Described illustrating on the end that removable pin 12 is arranged on dirt cup lock 25, described dirt cup lock 25 rotatably is fixed on the hinge 24, and contacts with bar 61 with the other end.As shown in FIG., bar 61 1 ends that rotatably are fixed on the hinge 62 contact with dirt cup lock 25, and the other end contacts with the push rod 23 that extends from dirt cup release-push 4.Spring 26 is arranged between fixation wall 52 and the dirt cup lock 25, to apply a power that makes progress on the lower surface of dirt cup lock 25.Therefore, if not according to dirt cup release-push 4, then spring 26 upwards pushes away dirt cup lock 25, and forces removable pin 12 to rest on latched position, thereby locks dirt cup 6.

If will remove dirt cup 6 from main casing 1, then must be according to dirt cup release-push 4, make push rod 23 apply a downward power on an end of bar 61, and force it from the clockwise direction of the view shown in Fig. 4, being pivotable around hinge 62.Then, the other end of bar 61 forces dirt cup lock 25 being pivotable around hinge 24 on the counter clockwise direction of the view shown in Fig. 4, and then, removable pin 12 is released among dirt cup 6.At this moment, only steady pin 13 meshes with dirt cup 6, so dirt cup 6 can be separated with main casing 1.

In order to obtain good suction and whirlwind performance, Mi Feng air path is important fully.So between dirt cup 6 and main casing 1, be provided with filter sealing strip 22 and dust storage chamber sealing strip 19 to guarantee not having air to leak.Referring to Fig. 4, when dirt cup 6 was connected on the main casing 1, filter 18 was between surface 34 and guard bar 50.And, contact with contact surface 33 around the filter sealing strip 22 on surface 34.Because filter sealing strip 22 is made by elastomeric material, so do not have leakage of air between filter sealing strip 22 and the contact surface 33.When dirt cup 6 was connected to main casing 1, air was assembled chamber 60 and is just formed between separator top 65 and falred entrance 27, was converged to single air path therein from the air path of individual other cyclone, and was directed among the falred entrance 27.Meanwhile, convex surface 36 and 35 engagements of dust storage chamber opening.Owing to exist dust storage chamber sealing strip 19 full of elasticity between convex surface 36 and the dust storage chamber opening 35, so cavity 30 and cavity 31 are sealed.

In the present invention, comprised cyclone system in the dirt cup 6 with two parallel cyclones.As shown in Fig. 5 and Fig. 6, the air that has dust sees through into gas access portal 8, flows to the two crotches 51 of T shape through going into gas passage 20, and here, air-flow is divided into two strands.As shown in Figure 5, have a wall 55 be present in the two crotches 51 of T shape below, this makes the air that has dust be divided into two strands of air-flows, and enters cyclone 46 and cyclone 47 by cyclone opening 40 and cyclone opening 41 respectively.Described wall 55 is preferably smooth, is stuck herein to avoid the dirt material.As shown in Figure 6, the air that has dust tangentially flows on the inner surface of cyclone 47 and cyclone 46, and forms eddy current 43 and eddy current 42 respectively in indivedual cyclones.This makes heavier-than-air dust granule see through action of centrifugal force and shifts to the eddy current outside that this phenomenon is commonly referred to cyclone type separates, and is as well known to those skilled in the art.

Air flow path in any one cyclone wherein is described below.As shown in Figure 5, there is eddy current stopper 64 on the end wall in cyclone 46 56.It is concentric that the center of eddy current stopper 64 and eddy current 42 accounts for, therefore, be in eddy current 42 centers, comparatively the air of cleaning will at first collide with eddy current stopper 64, air-flow is backwards to rightabout immediately and enters return duct 37, the same time, dust 39 continues towards the end wall 56 mobile dust storage chambers 9 that also tangentially escape into.As previously mentioned, dust storage chamber 9 is connected to cyclone body via the dust release aperture.Dust shown in the figure 39 sees through effect of inertia, escapes into cavity 30 through cyclone end 44.During normal running, dirt cup 6 is connected on the main casing 1, thereby makes cavity 30 sealed.Fig. 6 also illustrates the structure and the air-flow of cyclone 47 inside.In cyclone 47, there are cyclone opening 41, cyclone end 45 and are positioned at eddy current stopper 63 on the end wall 57.The principle that the cyclone type of representing with eddy current 43 separates also with cyclone 46 in identical.

Fig. 6 is illustrated in and has the return duct with tapering point in each cyclone.With cyclone 46 is example, and return duct 37 has tapering point 58.In a preferred embodiment, tapering point 58 has several slits 54, and described slit 54 allows air-flow to enter return duct 37.Another function of slit is that to serve as be a rough security filter, guarantees not have bulky grain to enter in the return duct 37.And for example other filter such as grid can be used for replacing slit or is used in combination so that better filter effect to be provided with slit.In cyclone 47, the tapering point 59 that is provided with slit 53 has same configuration.

As shown in Figure 6, the air that was cleaned leaves cyclone 46 and cyclone 47 by dividing other return duct terminal 48 and return duct end 49.Separator top 65 and falred entrance 27 form air and assemble chamber 60, to assemble the air downstream path of cyclone 46 and cyclone 47, make it to become single air path.Filter 18 is positioned at the rear positions place of dirt cup 6.

In the present invention, the cyclone system is configured to dust 39 is collected in independently dust storage chamber 9, and described dust storage chamber 9 is away from cyclone 46 and cyclone 47.In Fig. 5, can see the clear diagram of the structure of cyclone system and dust storage chamber 9, and the dust deposit method that Fig. 8 illustrates traditional cyclone system is different with cyclone of the present invention system.In traditional cyclone system, generally speaking, there is not independently dust storage chamber, pre-motor filter 32 then is positioned at cyclone body 68.See that thus cyclone body is identical part with dust storage chamber in fact.This makes increasing dust 39 accumulate on the filter, and inreal separated through the whirlwind effect.The present invention has adopted the independent dust receptacle that is provided with away from cyclone, and cooperates cyclone system efficiently.As a result, most dust will be separated through cyclone, have only the dust (mainly being very small dust) of minority to enter in the filter through described system.Therefore, the user is cleaning and filtering often, and experiences constant suction, and the method that cleans dirt cup more easily.

The invention provides totally and fast dust removal process, this compares with traditional hand-held vacuum cleaner is an improvement.Have of dirt cup 6 settings of the dust storage chamber 9 of dust storage chamber opening 35 with cleaning vacuum plant.Therefore, as long as dirt cup 6 is separated from main casing 1 simply, just can discharge the dust 39 that accumulates in cavity 30 and the cavity 31 from dust storage chamber 9.This makes cleaning dust storage chamber 9 become and be more convenient and much cleaner process, because the user needn't contact or remove any part or filter that is contacted with dust.Another shedding motion that is used for alternative dust storage chamber opening 35 can be the movably door that is positioned on the dust storage chamber 9.

In the present invention, some useful accessory instruments are devised, to improve the function of cleaning vacuum plant.Fig. 7 illustrates barre 67 and floor brush 66.

Claims (9)

1. hand-held cleaning vacuum plant, comprise main casing, detachable battery cover, the motor that is connected to impeller, falred entrance pipe, detachable dirt cup part, be used for discharging the relieving mechanism of described dirt cup part from described main casing, it is characterized in that, at least two cyclones that described dirt cup partly comprises air intake, lead to the air path of cyclone, be set parallel to each other, be connected to the independently dust storage chamber of cyclone and be connected the air return duct that air is assembled the chamber individually, each cyclone has an air return duct.

2. hand-held cleaning vacuum plant according to claim 1, wherein said dust storage chamber have the opening of at least one dirt that is used to turn.

3. the replacement device that hand-held cleaning vacuum plant according to claim 2, wherein said dust storage chamber have the opening of at least one dirt that is used to turn is the closing device of for example door etc.

4. hand-held cleaning vacuum plant according to claim 1, the cavity between wherein said separator top and the described falred entrance pipe form an air and assemble the chamber to be suitable for assembling the air downstream path of a plurality of cyclones.

5. hand-held cleaning vacuum plant according to claim 4, the wherein said air that is used to assemble air path is assembled the chamber and is suitable for holding filter.

6. hand-held cleaning vacuum plant according to claim 4, wherein said falred entrance pipe also forms the part of described impeller housing.

7. hand-held cleaning vacuum plant according to claim 1 wherein has the air that is used to assemble the air downstream path and assembles the described air return duct of chamber and can partly remove from described dirt cup.

8. hand-held cleaning vacuum plant according to claim 1, wherein said air path is led to described cyclone opening with the bifurcated form.

9. hand-held cleaning vacuum plant according to claim 1, a wherein end of air return duct is taper, and has the hole.

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