CN101288572A - Motor, fan and filter device for vacuum cleaner - Google Patents

Abstract

In a first aspect, the present invention provides a motor, fan and filter arrangement for a vacuum cleaner, the arrangement comprising: a motor (10); a fan (20), the fan (20) being connected to the output shaft (12) of the motor (10) and having an axial inlet; and a filter (30, 230, 330); wherein the fan (20) is arranged with its axial inlet facing the motor (10); and the motor (10) is accommodated in the filter (30, 230, 330). Such an arrangement can use space more efficiently than conventional arrangements and enables the motor to be located in the filter in the opposite direction compared to conventional arrangements, so that clean air from the filter is drawn into the motor before encountering the fan. There is also the beneficial side effect of cooling the motor with filtered air. In a second aspect, the invention also provides a vacuum cleaner (100, 200, 300) comprising such a motor, fan and filter arrangement. Preferred embodiments of such vacuum cleaners are described, including rotatable upright vacuum cleaners and different handheld vacuum cleaners.

Description

Motor, fan and filter units for vacuum cleaners

technical field

The present invention relates to a motor, fan and filter arrangement for a vacuum cleaner and a vacuum cleaner comprising such a motor, fan and filter arrangement.

Background technique

Vacuum cleaners are known primarily for collecting dirt, although wet-and-dry variants capable of collecting liquids are also known. Typically, vacuum cleaners are used in domestic environments, although vacuum cleaners may also be used in other environments such as construction sites. Usually, they are electric and thus comprise an electric motor and a fan connected to the output shaft of the motor, an inlet for dirty air, an outlet for clean air and a collection chamber for dust, dirt and possibly also liquids. Electric power to the motor may be provided by a mains power supply, in which case the vacuum cleaner will further comprise a power cable which may be provided by a removable and replaceable battery pack or by one or more built-in rechargeable batteries, in which case In some cases, the vacuum cleaner will further comprise some means, such as a plug, for connecting the vacuum cleaner to the recharging unit. When the vacuum cleaner is supplied with electrical power from one of these sources, the motor drives the fan to draw dirty air along the airflow path through the dirty air inlet and then through the dust chamber to the clean air outlet.

Also provided at some point along the air flow path is a device for separating out entrained dirt (and possibly also liquid) in the dirty air and depositing this dirt in the dust chamber. Such separation means may include one or more filters and/or cyclonic separation devices. Traditionally, if the separation device includes a filter, the motor, fan and filter have an arrangement as schematically represented in FIG. 1 . As can be seen in FIG. 1 , the dirty air that has entered the vacuum cleaner via the dirty air inlet flows from zone P to zone Q through the filter 30 . This separates the dirt (and possibly also liquid) entrained in the dirty air, so that the filtered material remains in zone P. If the filter 30 itself is arranged in the collection chamber as usual, the filtered material remaining in the area P accumulates there. The clean air then flows from the region Q on the other side of the filter 30 to the third region R through the grill 42 formed in the wall 40 on which the filter 30 is installed. The grille 42 generally has no filtering effect, although additional filters may be provided. Rather its main purpose is to prevent the user from accessing the fan 20 mounted on the motor output shaft 12 of the motor 10 which draws air through the vacuum cleaner when the motor 10 is powered via the electrical terminals 14,16. As shown in FIG. 1, the fan 20 is an impeller which sucks air axially towards its blade surface and discharges air tangentially, from where the air flows to the clean air outlet of the vacuum cleaner. An example of a hand-held vacuum cleaner with the conventional motor, fan and filter of Figure 1 is also described in European Patent Publication No. EP 1 523 916 A in the name of the applicant.

The conventional arrangement of motors, fans and filters described above thus creates three compartmentalized regions P, Q and R, of which the second region, region Q, is effectively a "dead" space. In other words, zone P can be used to provide a dust chamber for said filter material, while zone R accommodates motor 10 and fan 20 and zone Q merely takes up space without fulfilling any purpose. On the one hand, the filter 30 should have as large a surface area as possible to enhance its filtering effect, which tends to increase the size of the area Q. This is precisely why placing a flat filter across the face of the fan 20 at the location of the grille 42 is generally avoided. Although this would eliminate area Q entirely, such a small filter would also seriously reduce the efficiency of the vacuum cleaner by creating a bottleneck in the airflow path. Furthermore, to further increase the efficiency of the filter 30, the filter is often provided in a cylindrical or frusto-conical shape. This shape encourages the dirty air in region P to swirl around the filter 30 before passing through it, which has the effect of throwing dirt particles outwards away from the filter 30 under the centrifugal force in the cyclone. On the other hand, however, if it is necessary to provide the filter 30 with a larger surface area or such a shape, then in order to save space and reduce the size of the area Q, the fan 20 and possibly the same part or the entire motor 10 is inserted into the area Q The alternative in 20 is also not contemplated, as this would prevent the air discharged tangentially from the fan 20 from flowing out to the clean air outlet of the vacuum cleaner, but instead cause the air discharged by the fan to hit the inner surface of the filter 30, thereby interacting with The influx of clean air through the filter 30 is counterproductive and again severely reduces the efficiency of the filtering operation.

The conventional arrangement of motors, fans and filters shown in Figure 1 is therefore inefficient in its use of space, but has no apparent solution to this problem inherent in it. This inefficient use of space is particularly undesirable in compact or hand-held vacuum cleaners, where efficient use of space is of considerable importance, and any wasted space will necessarily add to the the overall weight of the vacuum cleaner described above without any commensurate benefits.

Contents of the invention

It is therefore an object of the present invention to provide a motor, fan and filter arrangement for a vacuum cleaner which makes better use of space than the conventional arrangement shown in FIG. 1 . Another object of the present invention is to provide a motor, fan and filter arrangement particularly suitable for use in compact or hand-held vacuum cleaners. Yet another object of the present invention is to provide a vacuum cleaner comprising such a motor, fan and filter arrangement.

Thus, in a first aspect, the present invention provides a motor, fan and filter arrangement for a vacuum cleaner comprising: a motor; a fan connected to an output shaft of the motor and having an axial air inlet; and a filter wherein the fan is arranged such that its axial inlet faces the motor; and the motor is housed in the filter. This arrangement makes it possible to place the motor in the filter in the opposite direction to conventional arrangements, so that clean air from the filter is sucked into the motor before encountering the fan. So by sticking out from the output shaft of the motor on the motor output shaft it is still possible to place the fan outside the filter so that the air expelled by the fan is not obstructed by the filter and can still flow easily to the clean air of the vacuum cleaner exit. Furthermore, since clean air from the filter is drawn into the motor before it encounters the fan, it also provides the beneficial side effect of cooling the motor with air from the filter, unlike the conventional arrangement of Figure 1, where If the motor is cooled by the air expelled by the fan, the outflow of air from the fan will have to be re-routed past the motor. This would require the airflow to change direction, introducing aerodynamic drag into the airflow and reducing the overall efficiency of the vacuum cleaner. On the contrary, the motor, fan and filter device of the present invention does not need to change the route of the air exhausted by the fan, and since the motor is housed in the filter, efficient use of space is realized, and thus it is particularly suitable for use in compact or in a handheld vacuum cleaner.

The motor, fan and filter device of the present invention also has obvious advantages: Whereas the fan in the conventional device of Fig. 1 is an impeller that discharges air tangentially, the fan in the motor, fan and filter device of the present invention can be The impeller or propeller that axially discharges air from the side opposite the surface from which it is drawn axially by the fan. This is because in conventional arrangements the back of the fan is obstructed by the motor, so the air flowing from the fan has to be drawn tangentially, whereas in the motor, fan and filter arrangement of the present invention, the back of the fan is unobstructed, This allows the air from the fan to exit both tangentially as in the impeller and axially as in the propeller. This provides great versatility to the overall design of the airflow in a vacuum cleaner comprising such a motor, fan and filter arrangement, so that the air expelled by the fan can be freely directed.

The motor, fan and filter assembly of the present invention may also include a gas permeable housing disposed between the motor and the filter. Thus, if the filter is removable, for example for cleaning or replacing it, the housing can prevent the user from accessing the motor and fan, but air can still pass through the housing from the filter to the fan. Alternatively the motor housing may be airtight, in which case the device may also include a grill disposed between the motor and the fan through which the motor output shaft passes. Thus, the airtight housing completely prevents the user from accessing the electrical components of the motor, but air can still pass through the grill from the filter to the fan. This alternative is safer for the user than a breathable motor housing, but has the corresponding disadvantage that the motor cannot be cooled by air from the filter.

Preferably, the output shaft of the motor extends from inside the filter and one end of the output shaft is mounted on a bearing provided on the fan side opposite the motor. This way, the axial inlet to the fan is not blocked by the motor or bearings, which improves the aerodynamic efficiency of the airflow into the fan, while the extended motor output shaft is supported by bearings, which prevents elongation when the fan rotates. The motor output shaft vibrates due to any potential imbalance in the fan.

In a second aspect, the invention also provides a vacuum cleaner comprising a motor, a fan and a filter arrangement according to the first aspect of the invention. Preferably, the vacuum cleaner is a hand-held vacuum cleaner capable of maximizing the space savings provided by such a motor, fan and filter arrangement.

Description of drawings

Other features and advantages of the present invention will be better understood with reference to the following detailed description given by way of example and associated drawings, in which:

1 is a cross-sectional view of a conventional motor, fan and filter assembly for a vacuum cleaner;

Figure 2A is an isometric view of a motor and fan suitable for use in a motor, fan and filter arrangement in accordance with an embodiment of the present invention;

Figure 2B is a top view of the motor and fan shown in Figure 2A;

2C is an end elevational view of the motor and fan of FIG. 2A viewed in the direction of the arrow labeled "Y" in FIG. 2B;

Figure 2D is a cross-sectional view of the motor and fan of Figure 2A along line A-A' shown in Figure 2B;

Figure 3 is an isometric view of a first embodiment of a vacuum cleaner comprising a motor, fan and filter arrangement according to the invention;

Figure 4 is a close-up isometric view of the central portion of the vacuum cleaner shown in Figure 3;

Figure 5 is an exploded view of the central portion of the vacuum cleaner shown in Figure 4;

Figure 6 is a cross-sectional view through the central portion of the vacuum cleaner shown in Figure 4;

Figure 7 is a perspective view of a second embodiment of a vacuum cleaner comprising a motor, fan and filter arrangement according to the present invention;

Figure 8 is a perspective view from below of the handheld vacuum cleaner of Figure 7;

Figure 9 is a perspective view of the underside of the handheld vacuum cleaner of Figure 7;

Figure 10 is an exploded view of the main components of the handheld vacuum cleaner of Figure 7;

Figure 11 is a perspective view of a third embodiment of a vacuum cleaner comprising a motor, fan and filter arrangement according to the present invention;

12A, 12B, and 12C are perspective views of the hand-held vacuum cleaner of FIG. 11, showing positions of the rotatable front end of the hand-held vacuum cleaner at 180 degrees, 360 degrees, and 135 degrees, respectively, relative to the main axis of the vacuum cleaner; and

FIG. 13 is an exploded view of the main components of the handheld vacuum cleaner of FIG. 11 .

Detailed ways

Reference is first made to FIGS. 2A-2D which illustrate a motor and fan suitable for use in a motor, fan and filter arrangement according to an embodiment of the present invention. The motor 10 has an output shaft 12 on which a fan 20 is mounted. Electrical power is supplied to the motor 10 through the electrical contacts 14, 16 so that during operation of the motor, air passes axially over the motor 10 in the direction of the arrow shown in FIG. The fan 20 is an impeller so it discharges air tangentially. The end of the output shaft 12 remote from the motor 10 is mounted on a bearing 22 supporting the output shaft 12 which prevents the output shaft 12 from vibrating due to any potential imbalance in the fan 20 as the output shaft 12 rotates. As best seen from the top view of Figure 2B, the motor output shaft 12 is of sufficient length to allow the air surrounding the motor 10 to flow unhindered freely into the air inlet 24, and is also accessible from the end of Figure 2C. It can be seen that the axial inlet 24 of the fan 20 has a larger diameter than the motor 10 , so that the circumferential portion of the inlet 24 appears completely unobstructed by the motor 10 . Figure 2B also indicates the typical length of a motor output shaft suitable for use in a conventional motor and fan arrangement in a vacuum cleaner by the arrow marked "X". In such conventional arrangements, the bearing 22 is generally not required because the shorter length of the motor output shaft makes the shaft stiffer and therefore less susceptible to any potential imbalances in the fan as it rotates. The effect of vibration. However, by attaching an extension piece to the shorter motor output shaft of the conventional motor and/or attaching a coupling to the other shaft carrying the fan, conventional motors can also be adapted for use in the motor according to the invention. Motor, fan, filter unit. The arrow marked "X" in FIG. 2B also indicates the approximate location of a grille (not shown) that may be provided between the motor 10 and the fan 20 through which the output shaft 12 of the motor may pass, thereby The fan 20 is shielded from access by the user. This grid can be used to provide additional support for the motor output shaft.

Turning next to Figure 3, a first embodiment of a vacuum cleaner comprising a motor, fan and filter arrangement according to the present invention is shown. This is a compact stick vacuum cleaner (or "upright vacuum cleaner"), described in more detail in previously co-pending European Patent Application No. EP07102186.9, the application claims the priority. The vacuum cleaner 100 includes an upper body 50 , a lower body 60 , a floor end 70 , a handle 80 and a dust filter 90 . The upper body part 50 is rotatable relative to the lower body part 60 about the axis of the dust filtering part 90 . The floor end 70 includes a dirty air inlet and a pair of floor-running wheels 71 , 72 , while the handle 80 includes an electrical on/off switch 81 . The dust filter section 90 comprises a tangential inlet duct 91 , a dust collection chamber, a clean air outlet and a motor, fan and filter arrangement according to the invention, which are described in more detail below with reference to FIGS. 4 to 6 . During operation of the vacuum cleaner 100 , the user activates the motor housed in the dust filter 90 by operating an electric on/off switch 81 connected to the motor via an electric wire passing inside the upper body 50 . This allows dirty air to flow from the dirty air inlet at the floor end 70 upwards into the duct located in the lower body 60 to the tangential inlet duct 91 from where it enters the dust chamber of the dust filter 90 .

The dust chamber marked by reference numeral 92 can best be seen in FIG. 4 . Dirty air entering dust chamber 92 via tangential inlet duct 91 swirls around cylindrical strainer 93 in a clockwise manner as indicated by the arrow in FIG. 4 . The primary filter 93 surrounds and houses the smaller cylindrical fine filter 30 such that between them the primary filter 93 and the fine filter 30 serve to successively filter out the smaller particles of dirt entrained with the dirty air, thereby beginning to remove them Collected in dust collection chamber 92. The end face of the dust collection chamber 92 includes a door 94 mounted on hinges 99 and closed by a series of door pins 95 designed to engage corresponding lips on the rim of the dust filter 90 . When the door 94 is closed, a series of first parts 96 of filter cleaning means disposed on the end face of the fine filter 30 engages a corresponding series of second parts 97 of filter cleaning means disposed on the inner surface of the door 94 . The engagement of these first and second parts 96, 97 allows the user to operate the filter when the door is closed via a wheel (not visible in FIG. 4 but marked 940 in FIG. 6) provided on the outer surface of the door 94. appliance cleaning device. An elastic sealing element 98 made of polyethylene, rubber or similar elastic material arranged around the circumference of the door 94 ensures that the door is closed in an airtight manner.

Turning now to FIG. 5 , there is shown an exploded view of the central portion of the vacuum cleaner of FIG. 3 showing how the fine filter 30 is housed in the coarse filter 93 . Inside the fine filter 30 the housing 18 of the motor 10 can also be seen. The housing 18 is gas permeable due to the presence of a plurality of first ventilation holes 180 formed in its end faces. Accordingly, clean air passing through the fine filter 30 may enter the housing 18 through the vent hole 180 . Figure 6 shows a section through the central part of the vacuum cleaner in more detail. As can be seen in FIG. 6 , the motor output shaft 12 in this embodiment is constructed from a male and female nipple that is added to a shorter motor output shaft of a conventional motor. The figure also shows how a plurality of second vent holes 181 formed in the end face of the housing 18 opposite the first plurality of vent holes 180 allows clean air to flow out of the housing 18 and around the motor output shaft 12 towards the fan 20, The fan 20 finally sends the clean air back to the atmosphere through the clean air outlet vents 900a, 900b. Thus, the entire filtering process from the entry of dirty air via the tangential inlet duct 91 to the discharge of clean air via the clean air outlets 900a, 900b, includes the motor 10, the motor housing 18, the fan 20, the fine filter 30, the coarse filter 93, The filter cleaning device 96 , 97 , 940 as well as the dust collection chamber 92 are all housed in a particularly compact, substantially cylindrical dust filter part 90 of the vacuum cleaner.

Figure 7 shows a second embodiment of a vacuum cleaner comprising a motor, fan and filter arrangement according to the invention, which is a hand-held vacuum cleaner 200. As shown in FIG. 7, vacuum cleaner 200 includes a main body portion 260, a handle 280, and a dust collection chamber 292 containing a filter assembly 230, both of which are oriented perpendicular to the longitudinal axis of main body portion 260 such that the During use of the cleaner, the dust chamber 292 and the filter assembly 230 remain substantially vertical, and dust collects into the bottom of the dust chamber 292 . The lower view of FIG. 8 of the handheld vacuum cleaner 200 shows how the dust chamber 292 is emptied. The dust collection chamber 292 includes a door 294 hinged on its end face, and the door 294 opens in the direction of the arrow shown in FIG. 8 . The dust chamber 292 is transparent so that the user can observe the dust swirling around the filter assembly 230 during operation of the vacuum cleaner and can also see when the dust chamber 292 is full and thus needs to be emptied. The bottom view of FIG. 8 also shows the dirty air inlet 270 of the vacuum cleaner 200 .

FIG. 9 shows filter assembly 230 removed from dust collection chamber 292 to reveal breathable motor housing 218 housed within filter assembly 230 . The motor housing 218 , which in turn includes a motor not shown in FIG. 9 , has a plurality of first vent holes 280 formed in its end face to allow clean air passing through the filter assembly 230 to enter the motor housing. The exploded view of FIG. 10 shows the main internal components of the handheld vacuum cleaner 200 . As shown in FIG. 10 , the main body portion 260 and the handle 280 are composed of two half shells 261 , 262 . This demonstrates how the dirty air inlet 270 is placed in flow communication with the dust chamber 292 via a duct 273 integrally molded into the lower housing half 262 . Duct 273 is shaped to provide tangential access to dust chamber 292 . The space within the lower housing half 262 on either side of the conduit 273 is used to accommodate a plurality of rechargeable batteries 264 electrically connected to a plug charger socket 268 via electrical cords 266 . This makes it possible to recharge the battery pack 264 using a conventional pluggable plug charger 265 (which does not form part of the vacuum cleaner 200). The battery 264 is also electrically connected via an electrical wire 282 to an electrical on/off switch 281 mounted in the handle 280 . The electrical on/off switch 281 has a cover 284 to insulate the switch from the user. The battery 264 and the on/off switch 281 are also electrically connected to the motor 10 via the electric wire 216, so that when the user operates the on/off switch 281, the motor 10 is started by the battery 264, and the motor 10 mounted on the motor output shaft 12 is driven. The fan 20 starts to spin and draws dirty air up the duct 273 . The motor output shaft 12 is supported on bearings 22 to prevent it from vibrating. The motor 10 itself is accommodated in the housing 218 . A separate end cap 220 is provided for ease of manufacture of the housing 218 . Housings 218 , 220 are in turn housed in filter assembly 230 located inside dust collection chamber 292 . The filter assembly 230 has a frusto-conical shape and acts as a cyclone separator that cooperates with the dust collection chamber 292 .

Fig. 10 also shows the door 294 of the dust collection chamber 292, the door 294 is mounted on a hinge 299 and sealed by an elastic sealing element 298 made of polyethylene, rubber or similar elastic material, so as to ensure that the door 294 is closed in an airtight manner . Therefore, during the operation of the vacuum cleaner 200, the dirty air entering the dust collection chamber 292 from the dirty air inlet 270 through the duct 273 swirls around the filter assembly 230, and the clean air passing through the filter assembly 230 is sucked by the fan 20 through the air-permeable motor. Housing 218, the fan 20 directs the air through a plurality of holes 291 formed in the end face of the dust collection chamber opposite to the door 294 before the clean air is exhausted from the plurality of clean air outlet vent holes 290 formed in the half shell 261 . In order to allow the user to empty the dust collection chamber 292 , the half housing 261 is also provided with a hole 263 , through which a spring release button 244 is exposed, and the button 244 presses down the push rod 248 by the elastic force of the spring 246 . This in turn pushes door 294 open about hinge 299 . To allow a user to reclose the door 294 after emptying the dust chamber, the door 294 is provided with a door pin 250 that engages a lip formed on the rim of the dust chamber 292 .

Turning finally to FIG. 11 , there is shown a third embodiment of a vacuum cleaner comprising a motor, fan and filter arrangement according to the invention, which is a hand-held vacuum cleaner 300 . As shown in FIG. 11, the vacuum cleaner 300 includes a main body portion 360, a handle 380, and a dust chamber 392 designed to accommodate a filter assembly 330 therein. The filter assembly 330 is shown disassembled from the dust chamber 392 in FIG. Down. When installed in the dust collection chamber 392, both the filter assembly 330 and the dust collection chamber 392 are oriented perpendicular to the longitudinal axis of the main body portion 360 such that during use of the vacuum cleaner, the dust collection chamber 392 and the filter assembly 330 remain substantially horizontal and Dust collects into the underside of the dust collection chamber 392 . The dust chamber 392 is transparent so that the user can observe the dust swirling around the filter assembly 330 during operation of the vacuum cleaner and also see when the dust chamber 392 is full and therefore needs to be emptied.

Figure 11 also shows how the dust chamber 392 can be emptied by means of a door 394 hinged on its end face. FIG. 11 also shows the breathable motor housing 318 housed inside the filter assembly 330 . The motor housing 318 , which in turn includes a motor not shown in FIG. 11 , has a plurality of vent holes 380 formed in its end face to allow clean air passing through the filter assembly 330 to enter the motor housing.

The vacuum cleaner 300 is rotatable about the central axis of the dust collection chamber 392 in a manner similar to that described in European Patent Publication No. 1752076A also in the applicant's name. Thus, as shown in FIGS. 12A to 12C, the vacuum cleaner 300 can be folded from the 180-degree position shown in FIG. 12A to the 360-degree position shown in FIG. 12B as indicated by the arrows in FIGS. For storage and transport, for example, or folded into the 135 degree position shown in Figure 12C to allow access to inaccessible corners, for example. FIG. 12C also shows the dirty air inlet 370 of the vacuum cleaner 300 .

The exploded view of FIG. 13 shows the main internal components of the handheld vacuum cleaner 300 . As shown in FIG. 13 , the main body portion 360 is composed of upper and lower parts 361 and 362 , respectively, and the handle 380 is composed of two half shells 385 , 386 . The dirty air inlet 370 is placed in flow communication with the dust collection chamber 392 via a duct 373 housed in the main body portion 360 , the duct 373 entering the dust collection chamber 392 tangentially. The space within the lower body member 362 below the duct 373 is occupied by a plurality of rechargeable batteries 364 which are electrically connected to a plug charger socket 368 via electrical wires 366 . This makes it possible to recharge the battery pack 364 using a conventional pluggable plug charger 365 (which does not form part of the vacuum cleaner 300). The battery 364 is also electrically connected via an electrical wire 382 to an electrical on/off switch 381 mounted in the handle 380 . The electrical on/off switch 381 has a cover 384 to insulate the switch from the user. The battery 364 and the on/off switch 381 are also electrically connected to the motor 10 via the electric wire 316, so that when the user operates the on/off switch 381, the motor 10 is started by the battery 364 and driven to be installed on the motor output shaft 12 The fan 20 starts to spin and draws the dirty air upwards into the duct 373. Because the vacuum cleaner 300 can be rotated in the manner described above with respect to FIGS. A pair of corresponding rails 389 in the dust collection chamber 392 are in sliding contact. Thus, regardless of the orientation of the main body 360 relative to the handle 380 , an electrical circuit can always be established between the battery 364 , the on/off switch 381 and the motor 10 .

It can also be seen from FIG. 13 that the bearing 22 disposed at the end of the motor output shaft 12 remote from the motor 10 supports the motor output shaft 12 to prevent it from vibrating. The motor 10 itself is housed in a housing 318 . For ease of manufacture housing 318 is provided with a separate end cap 320 in which vent holes 380 are visible to allow clean air through filter assembly 330 to enter the motor housing. Housings 318 , 320 are in turn housed in filter assembly 330 located inside dust collection chamber 392 . The filter assembly 330 has a frusto-conical shape and acts as a cyclone separator that cooperates with the dust collection chamber 392 .

FIG. 13 also shows a door 394 of the dust collection chamber 392, the door 394 has a spring door pin 344, and the door 394 can be opened by pressing the door pin 344 under the elastic force of the spring 346. The door pin 344 engages a lip formed on the rim of the dust chamber 392 to allow the door to be reclosed. The door is sealed by an elastic sealing element 398 made of polyethylene, rubber or similar elastic material in order to ensure that the door 394 closes in an airtight manner. Therefore, during the operation of the vacuum cleaner 300, the dirty air entering the dust collection chamber 392 from the dirty air inlet 370 through the duct 373 swirls around the filter assembly 330, and the clean air passing through the filter assembly 330 is sucked by the fan 20 through the air-permeable motor The housing 318, the fan 20 directs the air through a plurality of holes formed in the end face of the dust collection chamber opposite the door 394 before the clean air is exhausted from the plurality of clean air outlet vent holes 390 formed in the half shell 385 391. In order to allow the user to adjust the angle of the body 360 relative to the handle 380, finally, the shell half 386 is also provided with a ratchet 350 having a plurality of teeth formed on its inner circumference. These actions lock the body 360 in one of several orientations relative to the handle 380 . The ratchet 350 is also provided with a spring release button 352, which can be pressed by the elastic force of the spring 354 to disengage the teeth, thereby allowing the user to rotate the main body 360 from one orientation to another. Release button 352 also relocks body 360 in a new orientation relative to handle 380 .

Claims (23)

1. motor, fan and filter for installation that is used for vacuum cleaner, described device comprises:

Motor (10);

Fan (20), described fan (20) are connected to the output shaft (12) of described motor, and described fan has axial entrance (24); And

Filter (30,230,330);

It is characterized in that:

Described fan (20) is configured such that its axial entrance (24) is in the face of described motor (10); And

Described motor (10) is contained in the described filter (30,230,330).

2. motor according to claim 1, fan and filter for installation, wherein, described fan (20) is the impeller with tangential output.

3. motor according to claim 1, fan and filter for installation, wherein, described fan (20) is to have from the screw of the over glaze relative with its axial entrance to output.

4. according to each described motor, fan and filter for installation in the aforementioned claim, also comprise the ventilative housing (18,218,220,318,320) that is inserted between described motor (10) and the described filter (30,230,330).

5. according to each described motor, fan and filter for installation in the aforementioned claim, also comprise the grid that is positioned between described motor (10) and the described fan (20), the described output shaft (12) of described motor passes described grid.

6. according to each described motor, fan and filter for installation in the aforementioned claim, wherein, the described output shaft (12) of described motor (10) extends in described filter (30,230,330), and an end of described output shaft is installed on the bearing (22), and described bearing is positioned at a side described fan (20) and opposite with described motor (10).

7. according to each described motor, fan and filter for installation in the aforementioned claim, wherein, the described axial entrance (24) of described fan (20) has the bigger diameter of diameter than described motor (10).

8. according to each described motor, fan and filter for installation in the aforementioned claim, wherein, described filter (30,230,330) has cylindrical or frusto-conical shape, and is installed in concentrically in the have the tangential inlet pipeline cylindrical dust storage chamber (92,292,392) of (91,273,373).

9. a vacuum cleaner (100,200,300) comprises according to each described motor, fan and filter for installation in the aforementioned claim.

10. vacuum cleaner according to claim 9, wherein, described vacuum cleaner is the upright vacuum cleaner (100) that comprises described motor, fan and filter for installation, described upright vacuum cleaner (100) comprises upper body (50), lower body (60), floor end (70), handle (80) and dust filter house (90), wherein, described upper body (50) can described relatively lower body (60) pivot around the axis of dust filter house (90).

11. vacuum cleaner according to claim 10, wherein, described dust filter house (90) also comprises pure air outlet (900a, 900b).

12. vacuum cleaner according to claim 9, wherein, described vacuum cleaner is hand-held vacuum cleaner (200,300), it comprise main part (260,360), handle (280,380) and with the dust storage chamber (292,392) of the longitudinal axis vertical orientation of described main part.

13. vacuum cleaner according to claim 12, wherein, the longitudinal axis vertical orientation of described dust storage chamber (292) and described main part (260), make in the use of described vacuum cleaner (200), it is vertical that described dust storage chamber keeps substantially, so that dust accumulation is in the bottom of described dust storage chamber, and described dust storage chamber comprises door (294), and described door (294) is hinged on the end face of described dust storage chamber below described bottom.

14. vacuum cleaner according to claim 13 also comprises the exercisable elasticity release-push of user (244), described button can act on push rod (248) so that described door (294) is opened.

15. vacuum cleaner according to claim 12, wherein, described dust storage chamber (392) is vertically directed with the longitudinal axis of described main part (360), make between the operating period of described vacuum cleaner (300), described dust storage chamber keeps level substantially, wherein, described main part (360) can rotate with respect to the axis of described handle (380) around described dust storage chamber (392).

16. vacuum cleaner according to claim 15, wherein, described handle (380) comprises the exercisable on/off switch of user (381), described switch (381) is electrically connected to a pair of contact (388), described a pair of contact (388) and a pair of corresponding electric guide rail (389) sliding-contact, described electric guide rail (389) is installed on the described dust storage chamber (392).

17. according to claim 15 or 16 described vacuum cleaners, wherein, described main part (360) may be locked on one of a plurality of different orientation with respect to described handle (380).

18. vacuum cleaner according to claim 17 also comprises ratchet (350), described ratchet (350) has the elasticity release-push (352) that is formed at a plurality of teeth on its inner periphery and is used to make described ratchet to break away from.

19. according to each the described vacuum cleaner in the claim 9 to 18, wherein, described dust storage chamber (92,292,392) is transparent.

20. one kind is used for motor, fan and filter for installation vacuum cleaner, that describe with reference to Fig. 2 A to Figure 13 as literary composition basically.

21. vacuum cleaner as describing with reference to Fig. 3 to Fig. 6 in the literary composition basically.

22. vacuum cleaner as describing with reference to Fig. 7 to Figure 10 in the literary composition basically.

23. vacuum cleaner as describing with reference to Figure 11 to Figure 13 in the literary composition basically.

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