EP3772312A1 - Vacuum cleaner - Google Patents

Abstract

The invention relates to a vacuum cleaner with a housing (1), a fan (7) and a bearing ring (2), the fan (7) being accommodated in the housing (1) and the housing (1) having a plurality of housing parts (11, 12) ) and the fan (7) rests on the bearing ring (2), which also acts as a seal between the housing parts (11, 12).

Description

The invention relates to a vacuum cleaner. In particular, the invention relates to a vacuum cleaner with a fan, the fan having a motor, a shaft which can be driven by the motor, an impeller which is attached to the shaft and a fan housing with a fan cover, which has the fan components encloses. It is known from prior art that is not documented in printed literature that such a fan is accommodated in the vacuum cleaner by two bearing elements, one in an inflow or suction area and one on an outflow or outflow side of the fan. Several components are therefore required to mount the fan. These require installation space and generate costs.

The invention therefore poses the problem of providing a vacuum cleaner which has a fan bearing with little cost and little space required.

According to the invention, this problem is solved by a vacuum cleaner having the features of claim 1. Advantageous refinements and developments of the invention emerge from the following subclaims.

The advantages that can be achieved with the invention are, in addition to cost-effectiveness, that few components are used and that they require less installation space. The design is very compact, as the fan mounting is integrated into the two housing parts of the engine compartment. In addition, the solution according to the invention achieves a good air performance and insulation performance of the vacuum cleaner fan.

The invention relates to a vacuum cleaner with a housing, a fan and a bearing ring, the fan being accommodated in the housing and the housing having several housing parts and the fan being mounted on the bearing ring which simultaneously acts as a seal between the housing parts. The design is inexpensive and requires little space. The housing is the housing that encloses the engine compartment.

In a preferred embodiment, the bearing ring is arranged on a largest diameter of the fan. This means that it is still possible to use the same component to form the engine compartment seal, which provides optimal sealing results.

The bearing ring preferably has an H profile so that it has two grooves. One end of one housing part is preferably in one of the grooves of the H-profile and in the other groove of the H-profile arranged one end of the further housing part. This continues to provide a good sealing result. The system of housing part, further housing part and bearing ring has sufficient stability and the fan is firmly mounted in its position and thus withstands the ongoing operation of the vacuum cleaner as well as impact loads from falling. The H-profile preferably has lead-in bevels. The insertion bevels are designed in such a way that they facilitate insertion of the housing part or further housing part into the respective groove.

In a preferred embodiment, the bearing ring has a receiving geometry for receiving part of the fan in the form of a U-profile. The U-profile has another groove in which the part of the fan is stored. The U-profile can be mounted very well on the blower in individual states, even if it is oversized.

The fan preferably has a bearing rib with a toothing and is arranged in the further groove of the U-profile. The bearing rib is mounted in the further groove of the U-profile. The toothing prevents the fan from rotating when the vacuum cleaner is started up and during operation.

In a preferred embodiment, the bearing ring is designed to be rotationally symmetrical. The bearing ring shows its functional condition when installed. The bearing ring is preferably a soft component in order to provide sealing and damping properties. The bearing ring is preferably made of rubber, for example EPDM (ethylene-propylene-diene rubber). It preferably has no inherent stability. The bearing ring preferably has circumferentially arranged support ribs on an inner surface. The bearing ring is preferably designed such that it can be placed completely freely on the bearing rib with the further groove of the U-profile.

One of the housing parts is preferably designed as part of the exhaust air filter. This means that components can still be saved. The further housing part is preferably designed as part of the exhaust air filter and the exhaust air filter is designed to at least partially accommodate the fan in its interior. The exhaust air filter, together with the fan, forms a motor capsule that is still connected to the housing part via the bearing ring. This motor capsule consisting of a fan, bearing ring and further housing part offers the possibility of pre-assembly and thus the formation of different variants in the fan and motor equipment and the filter equipment with regard to different filtration classes during assembly of the vacuum cleaner.

The fan and the further housing part are preferably connected by means of a plug-in and / or latching connection. The fan preferably has a motor, a shaft which can be driven by the motor, an impeller which is fastened to the shaft and a fan housing with a fan cover that encloses the fan components. The fan housing is preferably of cylindrical design, it being possible for its diameter to vary. The fan housing forms a guide stage of the fan. The fan housing and control stage are made in one piece. One end face of the fan housing preferably has openings in order to allow an air flow to cool the motor. The further housing part is also preferably of cylindrical design, it being possible for the diameter to be variable.

The entire engine compartment, which is delimited by the housing part and the further housing part, is preferably designed as a non-screwed capsule. All of these components are preferably assembled in the axial direction of the fan. This creates a compact design, the components of which are neither screwed nor screwed together.

Due to the structure according to the invention, a separation of the overpressure and underpressure spaces cannot take place directly at an inflow or suction area of the fan. Rather, there is a free space around the fan in the inflow area. In a preferred embodiment, a damping element and / or a sealing element is arranged in the inflow area of the fan. This prevents the fan from being able to draw additional air out of the free space, in particular this secondary flow is prevented. The free space can be lined with a damping element in the form of a foam or fleece. As an alternative or in addition, the free space at the inflow point of the blower can be closed with a sealing element. The lining insulating elements or the sealing element preferably sits around the inflow area of the fan. As a result, the air flowing in can be calmed during operation and thus also have a positive acoustic benefit. The damping element and / or the sealing element preferably have a geometry that is favorable in terms of flow technology. The damping element and / or a sealing element preferably protrudes into the inflow area of the fan. This calms the air flow directly in the inflow area and thus has a positive acoustic effect.

In a preferred embodiment, a damping element is alternatively or additionally arranged in the outflow or outflow area of the blower. In the outflow area of the fan, the air is directed out of the fan during operation through a guide stage designed with a blade geometry. At this point, the damping element is preferably arranged adjacent to the guide stage. As a result, the air is specifically directed through the damping element during operation. This acts like a rectifier for the chaotically exiting air from the fan and calms the air flow and thus leads to a reduction in air noise. In addition, this calming of the air flow leads to an increase in air performance in the form of volume flow recovery.

Damping elements and / or sealing elements arranged in the inflow area or outflow area can be identical and can be used as identical parts. At the inflow area, the damping element and / or sealing element is preferably arranged in a compressed manner, while it is preferably used in its starting position in the outflow area.

The insulating element is preferably arranged in the form of a foam in the inflow area and / or outflow area. For example, the insulating element can be a foam ring. The foam is preferably open-pored. As a result, an acoustic benefit can still be achieved.

In a preferred embodiment, the housing part has at least one rib geometry which is positively connected to a receiving geometry of the further housing part. As a result, the assembly of the motor capsule can take place in a directed manner in the housing part of the motor compartment. The housing part preferably has a plurality of rib geometries, so that the housing part is fixed in the axial direction of the fan in particular by means of receiving geometries arranged circumferentially on the further housing part on the further housing part.

In a preferred embodiment, the vacuum cleaner furthermore has a device body housing which has a plurality of housing inserts which at least partially enclose the housing. The two housing inserts preferably hold the housing, which delimits the engine compartment, firmly together.

Preferably, one of the at least two housing parts has receiving geometries which are designed to be in engagement with complementary counter-elements of the device body housing. The further housing part preferably has the receiving geometries. For example, it has two to six receiving geometries that are arranged circumferentially on an outer surface. The receiving geometries are preferably designed to fit into the two housing inserts of the device body housing during assembly. The receiving geometries are preferably designed with play in the axial direction of the fan in order to increase the preload in the H-profile of the bearing ring, in particular in the event of possible tightness problems. In addition to a support in the housing inserts, the recess geometries are preferably designed in such a way that they provide protection against rotation.

In a preferred embodiment, one or more of the housing inserts has receiving geometries which are designed to be in engagement with complementary counter-elements of the other device body insert, the housing part and / or the further housing part. This means that the two housing inserts are together lockable. The two housing inserts are preferably also screwed together. This causes a final fixation.

The further housing part preferably has a support element which is designed to be supported in the housing insert and the further housing insert. Furthermore, the housing part and the further housing part are preferably fixed to one another by a circumferential fixing.

The vacuum cleaner is preferably a hand-held vacuum cleaner. The expression “hand-held” means that the vacuum cleaner is operated by hand by the user. The vacuum cleaner is preferably designed as a handheld and / or stick vacuum cleaner. More preferably, a suction tube, the device body containing the fan, a handle and optionally a floor nozzle of the vacuum cleaner can be connected to one another in several vacuum cleaner configurations, so that the vacuum cleaner is designed as a multi-purpose vacuum cleaner.

In a preferred embodiment, the vacuum cleaner has an accumulator which is designed to supply the drive unit with power.

The vacuum cleaner is preferably designed as a cyclone vacuum cleaner. The term "cyclone vacuum cleaner" is to be understood as meaning a vacuum cleaner that is bagless and that eddies and any turbulence are generated in an air flow entering the vacuum cleaner, whereby the suction material such as dust particles are pressed in a predetermined direction and separated due to centrifugal force.

Fig. 1

eine Teilquerschnittsansicht eines erfindungsgemäßen Staubsaugers;

Fig. 2

eine Querschnittsansicht des in Fig. 1 gezeigten Lagerrings;

Fig. 3

eine vergrößerte Teilansicht des in Fig. 1 gezeigten Staubsaugers;

Fig. 4

eine perspektivische Ansicht des in Fig. 2 gezeigten Lagerrings;

Fig. 5

eine Schnittansicht des in Fig. 2 gezeigten Lagerrings;

Fig. 6

eine Draufsicht auf den in Fig. 2 gezeigten Lagerring;

Fig. 7

eine Seitenansicht des in Fig. 1 gezeigten Abluftfilters;

Fig. 8

eine Draufsicht auf den in Fig. 7 gezeigten Abluftfilter;

Fig. 9

eine perspektivische Ansicht eines Montageschritts zur Montage des in Fig. 1 gezeigten Gehäuses samt Gebläse;

Fig. 10

zeigt eine Seitenansicht des in Fig. 9 gezeigten Montageschritts in entgegengesetzter Montagerichtung;

Fig. 11

eine perspektivische Ansicht des in Fig. 9 oder 10 hergestellten Gehäuses;

Fig. 12

eine Draufsicht auf das in Fig. 11 gezeigten Gehäuse;

Fig. 13

eine Explosionsansicht eines Gerätekorpus-Gehäuses des in Fig. 1 gezeigten Staubsaugers;

Fig. 14

eine perspektivische Teilansicht der in Fig. 1 gezeigten Motorkapsel;

Fig. 15

eine perspektivische Teilansicht eines Gerätekorpus des in Fig. 1 gezeigten Staubsaugers;

Fig. 16

eine perspektivische Ansicht eines Teil-Montageschritts zur Herstellung des in Fig. 15 gezeigten Gerätekorpus;

Fig. 17

eine perspektivische Ansicht eines Montageschritts zur Herstellung des in Fig. 15 gezeigten Gerätekorpus;

Fig. 18

eine Querschnittsansicht des gemäß Fig. 17 hergestellten Gerätekorpus;

Fig. 19

eine weitere Querschnittsansicht des in Fig. 18 gezeigten Gerätekorpus;

Fig. 20

eine weitere Draufsicht auf den in Fig. 18 gezeigten Gerätekorpus;

Fig. 21

eine weitere Draufsicht auf den in Fig. 18 gezeigten Gerätekorpus;

Fig. 22

eine perspektivische Ansicht der in Fig. 1 gezeigten Motorkapsel; und

Fig. 23

eine Teilquerschnittsansicht eines weiteren erfindungsgemäßen Staubsaugers.

An embodiment of the invention is shown purely schematically in the drawings and is described in more detail below. It shows schematically and not to scale

Fig. 1

a partial cross-sectional view of a vacuum cleaner according to the invention;

Fig. 2

a cross-sectional view of the in Fig. 1 bearing ring shown;

Fig. 3

an enlarged partial view of the in Fig. 1 shown vacuum cleaner;

Fig. 4

a perspective view of the in Fig. 2 bearing ring shown;

Fig. 5

a sectional view of the in Fig. 2 bearing ring shown;

Fig. 6

a top view of the in Fig. 2 bearing ring shown;

Fig. 7

a side view of the in Fig. 1 shown exhaust air filter;

Fig. 8

a top view of the in Fig. 7 shown exhaust filter;

Fig. 9

a perspective view of an assembly step for assembling the in Fig. 1 shown housing including fan;

Fig. 10

shows a side view of the in Fig. 9 assembly step shown in the opposite assembly direction;

Fig. 11

a perspective view of the in Fig. 9 or 10 manufactured housing;

Fig. 12

a top view of the in Fig. 11 housing shown;

Fig. 13

an exploded view of a device body housing of the in Fig. 1 shown vacuum cleaner;

Fig. 14

a perspective partial view of the in Fig. 1 engine capsule shown;

Fig. 15

a perspective partial view of a device body of the in Fig. 1 shown vacuum cleaner;

Fig. 16

a perspective view of a partial assembly step for manufacturing the in Fig. 15 device body shown;

Fig. 17

a perspective view of an assembly step for producing the in Fig. 15 device body shown;

Fig. 18

a cross-sectional view of the according to Fig. 17 manufactured device body;

Fig. 19

a further cross-sectional view of the in Fig. 18 device body shown;

Fig. 20

another top view of the in Fig. 18 device body shown;

Fig. 21

another top view of the in Fig. 18 device body shown;

Fig. 22

a perspective view of the in Fig. 1 engine capsule shown; and

Fig. 23

a partial cross-sectional view of a further vacuum cleaner according to the invention.

Fig. 1 shows a partial cross-sectional view of a vacuum cleaner according to the invention. The vacuum cleaner has a housing 1, which has a housing part 11 and a further housing part 12. Furthermore, the vacuum cleaner has a fan 7 with a fan housing 77 which is arranged in the housing 1, a bearing ring 2 which is arranged on the housing 1, so that it connects the two housing parts 11, 12 in a sealing manner. The fan 7 rests on the bearing ring 2, which at the same time acts as a seal between the housing parts 11, 12. For this purpose, the fan 7 also has a bearing rib 76 with a toothing 75, which is supported on the bearing ring 2. The bearing ring 2 is arranged on a largest diameter of the fan 7. The further housing part 12 is part of an exhaust air filter 6. The fan housing 77 has a fan hood 5. A free space 4 exists between the fan hood 5 and the housing part 11. The fan 7 and the further housing part form a motor capsule.

Fig. 2 FIG. 11 shows a cross-sectional view of the FIG Fig. 1 bearing ring shown. The bearing ring 2 has an H-profile 21 so that it has two grooves. The bearing ring 2 also has a receiving geometry for receiving part of the fan (not shown) in the form of a U-profile 22, the U-profile forming a further groove. Furthermore, the bearing ring 2 has four insertion bevels 23. The insertion bevels 23 are designed to facilitate insertion of the housing part 11 and the further housing part 12.

Fig. 3 FIG. 11 shows an enlarged partial view of the FIG Fig. 1 shown vacuum cleaner. The fan 7 has the bearing rib 76 with the toothing 75, which is located in the further groove of the U-profile 22 is arranged. One end of the housing part 11 is arranged in one of the grooves of the H-profile 21 and one end of the further housing part 12 is arranged in the other groove of the H-profile 21.

Fig. 4 FIG. 11 shows a perspective view of the FIG Fig. 2 bearing ring shown. The bearing ring 2 also has circumferentially arranged support ribs 24 which are formed on an inner surface of the bearing ring 2.

Fig. 5 shows a sectional view of the in Fig. 2 bearing ring shown. The bearing ring 2 has the circumferentially arranged support ribs 24, the H-profile 21 and the U-profile 22.

Fig. 6 shows a plan view of the in Fig. 2 bearing ring shown. The bearing ring 2 is designed to be rotationally symmetrical. The support ribs 24 are arranged on an inner surface (not shown) of the bearing ring 2. Here are the cutting lines of the section for the illustration according to Fig. 5 shown in phantom.

Fig. 7 shows a side view of the in Fig. 1 shown exhaust filter. The exhaust air filter 6 has the further housing part 12, which has a plurality of receiving geometries 121. The receiving geometries 121 are designed to receive complementary elements (not shown) of a device body housing (not shown) and / or to be positively connected to a rib geometry (not shown) of the housing part (not shown).

Fig. 8 shows a plan view of the in Fig. 7 shown exhaust filter. The receiving geometries 121, which are configured differently, are formed on the further housing part 12.

Fig. 9 FIG. 13 shows a perspective view of an assembly step for assembling the FIG Fig. 1 Housing shown including fan, wherein the bearing ring is shown pre-assembled on the fan. The housing part 11, the fan 7 and further housing parts 12 are assembled in the direction of the arrow.

Fig. 10 shows a side view of the in Fig. 9 assembly step shown in the opposite assembly direction. The housing part 11, the fan 7 and further housing parts 12 are assembled in the direction of the arrow.

Fig. 11 FIG. 11 shows a perspective view of the FIG Fig. 9 or 10 manufactured housing. The housing 1 has the housing part 11 and the further housing part 12, which is part of the exhaust air filter 6 and has the receiving geometries 121. Two of the receiving geometries 121 are designed in such a way that they are positively connected to rib geometries 111 of the housing part 11.

Fig. 12 shows a further plan view of the in Fig. 11 shown housing. The housing part 11 has two rib geometries 111 and the further housing part 12 has two receiving geometries 121, which are positively connected to one another. Furthermore, the further housing part 12 has three further receiving geometries 121.

Fig. 13 FIG. 11 shows an exploded view of a device body housing of the FIG Fig. 1 shown vacuum cleaner. The device body housing 8 has a housing insert 81 and a further housing insert 82. Both the device body insert 81 and the further housing insert 82 each have receiving geometries 84 which are designed to be in engagement with the housing or the respective other housing insert 82, 81.

Fig. 14 FIG. 11 shows a partial perspective view of FIG Fig. 1 shown motor capsule. The fan 7, from which the fan cover 5 is visible, is arranged in the exhaust air filter 6 with the further housing part 12 in order to form a motor capsule. The further receiving geometries 121 shown, when installed in the in Fig. 8 Device body housing shown (not shown) in addition to a support an anti-twist device.

Fig. 15 shows a perspective partial view of the device body of the in FIG Fig. 1 shown vacuum cleaner. The device body 8 partially encloses the motor capsule made up of the exhaust air filter 6 and the fan 7. By the receiving geometries 121, the motor capsule is supported in the respective housing insert 81, 82 and is arranged so as to be secure against rotation.

Fig. 16 FIG. 13 is a perspective view of a partial assembly step for manufacturing the FIG Fig. 1 shown device body. The housing 11 has the housing parts 11, 12 connected via the bearing ring (not shown), in the interior of which the fan (not shown) is arranged. The housing 1 is inserted into the further housing insert 82 in the direction of the arrow.

Fig. 17 FIG. 13 shows a perspective view of a further assembly step for producing the in FIG Fig. 15 shown device body including housing part 11. The housing insert 81 and the housing 1 are moved in the direction of the arrow to the further housing insert 82 and thus mounted.

Fig. 18 FIG. 10 shows a cross-sectional view of FIG Fig. 17 manufactured device body. The housing part 12 has a support element 122 which is designed to be supported in the housing insert 81 and the further housing insert 82. Furthermore, the two housing parts 11, 12 are fixed to one another by a circumferential fixing 83. The fan 7 has a motor 71 which is configured to rotate a shaft 72 of the fan 7. The fan 7 also has an impeller 73 which is arranged on the shaft 72.

A guide stage 77 is located downstream of the impeller 73 in the direction of flow of the fan. This guide step 77 forms a bearing rib 75 which is mounted in the bearing ring 2.

Fig. 19 FIG. 11 shows another cross-sectional view of the FIG Fig. 18 shown device body. The housing part 12 is supported on both sides in the housing insert 81 and the further housing insert 82.

Fig. 20 shows a further plan view of the in Fig. 18 shown device body. The further housing insert 82 is connected to the housing 1 by means of screws 9.

Fig. 21 shows a further plan view of the in Fig. 18 shown device body. The housing insert 81 and the further housing insert 82 are connected to the housing 1 and to one another by means of screws 9.

Fig. 22 FIG. 11 shows a perspective view of the FIG Fig. 1 shown motor capsule. The motor capsule is formed from the exhaust air filter 6, which has the further housing part 12, and the fan 7 together with the fan cover 5.

Fig. 23 shows a partial cross-sectional view of a further vacuum cleaner according to the invention. The in Fig. 23 The vacuum cleaner shown corresponds to the one in Fig. 1 shown vacuum cleaner with the difference that a damping element 3 is arranged in the inflow area of the fan 7 and in the outflow area of the fan 7. The air flows in the direction of the arrow.

List of reference symbols

1

casing

11

Housing part

111

Rib geometry

12

further housing part

121

Recording geometry

122

Support element

123

further recording geometry

2

Bearing ring

21st

H-profile

22nd

U-profile

23

Lead-in bevel

24

Support rib

3

Damping element

4th

free space

5

Fan cover

6

Exhaust air filter

7th

fan

71

engine

72

wave

73

Wheel

75

Bearing rib

76

Interlocking

77

Fan housing and control stage

8th

Device body housing

81

Housing insert

82

further housing insert

83

Fixation

84

Recording geometry

9

screw

10

Damping element

Claims (12)

Vacuum cleaner with a housing (1), a fan (7) and a bearing ring (2), the fan (7) being housed in the housing (1) and the housing (1) having several housing parts (11, 12) and the The fan (7) is mounted on the bearing ring (2), which also acts as a seal between the housing parts (11, 12). Vacuum cleaner according to claim 1, characterized in that the bearing ring (2) is arranged on a largest diameter of the fan (7). Vacuum cleaner according to claim 1 or 2, characterized in that the bearing ring (2) has an H-profile (21) so that it has two grooves, and one end of the housing part (11) in one of the grooves of the H-profile (21) ) and one end of the further housing part (12) is arranged in the other groove of the H-profile (21). Vacuum cleaner according to one of the preceding claims 2, characterized in that the bearing ring (2) has a receiving geometry for receiving part of the blower (7) in the form of a U-profile (22). Vacuum cleaner according to claim 4, characterized in that the fan (7) has a bearing rib (75) with a toothing (76) and is arranged in the further groove of the U-profile (22) Vacuum cleaner according to one of the preceding claims, characterized in that the bearing ring (2) is designed to be rotationally symmetrical. Vacuum cleaner according to one of the preceding claims, characterized in that one of the housing parts (12) is designed as part of the exhaust air filter (6). Vacuum cleaner according to one of the preceding claims, characterized in that a damping element (3) is arranged in the inflow area of the fan (7) and / or in the outflow area of the fan (7). Vacuum cleaner according to one of the preceding claims, characterized in that the housing part (11) has at least one rib geometry (111) which is positively connected to a receiving geometry (121) of the further housing part (12). Vacuum cleaner according to one of the preceding claims, characterized by a device body housing (8) which has several housing inserts (81, 82) which at least partially enclose the housing (1). Vacuum cleaner according to claim 10, characterized in that one or more of the housing inserts (81, 82) has receiving geometries which are designed, each with complementary counter-elements of the other device body insert (82, 81), the housing part (11) and / or the further housing part (12) to be engaged. Vacuum cleaner according to claim 10 or 11, characterized in that one of the at least two housing parts (12) has receiving geometries (121) which are designed to engage with further complementary counter-elements of the device body housing (8).

Images