RU2330597C2 - Vacuum cleaner with outlet air channels - Google PatentsVacuum cleaner with outlet air channels Download PDF
- Publication number
- RU2330597C2 RU2330597C2 RU2006103276/12A RU2006103276A RU2330597C2 RU 2330597 C2 RU2330597 C2 RU 2330597C2 RU 2006103276/12 A RU2006103276/12 A RU 2006103276/12A RU 2006103276 A RU2006103276 A RU 2006103276A RU 2330597 C2 RU2330597 C2 RU 2330597C2
- Prior art keywords
- vacuum cleaner
- flow channel
- Prior art date
- 239000003570 air Substances 0.000 title description 51
- 239000002775 capsule Substances 0.000 claims description 26
- 230000000875 corresponding Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 17
- 238000005192 partition Methods 0.000 description 9
- 240000006028 Sambucus nigra Species 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 241000731961 Juncaceae Species 0.000 description 2
- 210000000188 Diaphragm Anatomy 0.000 description 1
- 210000003027 Ear, Inner Anatomy 0.000 description 1
- 244000171263 Ribes grossularia Species 0.000 description 1
- 230000001154 acute Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005755 formation reactions Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000003071 parasitic Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 239000004033 plastics Substances 0.000 description 1
- 239000007787 solids Substances 0.000 description 1
- 229920001169 thermoplastics Polymers 0.000 description 1
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping
FIELD: items of personal use and for household.
SUBSTANCE: vacuum cleaner contains a body with an outlet for outgoing air connected by the air current with the outlet side of the motor fan unit by means of the flowing channel. To the air current, the flowing channel is divided into several branches meeting together before the outlet. As branches two or more side flowing channels are made, the said channels are situated on the opposite sides of the motor fan unit that join the first branch forming the main flowing channel passing behind the side of the motor fan unit opposite to the suction inlet. The side flowing channels are connected with the main flowing channel so that the side air currents passing through the side flowing channels to the main flowing channel cross the main air current.
EFFECT: effective reduction of noise made by the vacuum cleaner and reduced costs of vacuum cleaner production.
7 cl, 5 dwg
The invention relates to a vacuum cleaner according to the restrictive part of claim 1 of the claims.
State of the art
A vacuum cleaner is known from patent document DE 3815320 A1, in the housing of which there is a dust collector and a fan compartment located behind it, both structurally and along the air stream, from which air is supplied by the motor fan to the exhaust duct. To provide good noise reduction at low cost, devices for changing direction are placed in the exhaust channel. In this case, the tubular part is divided along the course of flow into several longitudinal channels. In this case, the tubular part consists of two air ducts, each of the air ducts going sideways to the passage opening integrated in the vacuum cleaner body and only then turning back to the corresponding outlet openings. However, there is a disadvantage in that the swirl of the exhaust air created by the devices for changing the direction located in the outlet channel is at least partially aligned in the longitudinal channels of the tubular part located further downstream of the air flow, as a result of which the noise reduction is not optimal .
Disclosure of invention
The objective of the invention is to provide effective noise reduction in the exhaust air stream at low cost. In particular, noise reduction should be provided to a large extent without the use of additional expensive devices to change direction. Making a vacuum cleaner with such noise reduction should not be expensive.
According to the invention, this problem is solved in that the first and second branches of the channel for air flow (flow channel) for exhaust air are connected in front of the outlet of the vacuum cleaner.
Due to the connection of at least two branches of the air flow, they swirl, as a result of which the air flow loses a lot of energy, and the flow rate decreases. This reduces the noise level at the outlet of the outlet, since the exhaust air leaves the outlet at a lower speed. Since when connecting partial flows, they swirl, you can abandon special devices to change direction in order to influence the nature of the air flow.
Preferably, the flow of the second branch of the channel in the lower stream is connected to the flow of the first branch. Although at least two branches of the air stream, connecting at a common point in the lower stream, can end with a common outlet, however, it is better that the second branch of the channel flow into the first branch before this first branch reaches the outlet. This is done by attaching the flow of the second branch to the flow of the first branch in the lower stream. The advantage of such a scheme is that the effective swirl of the first and second air flow does not occur in the immediate vicinity of the outlet, but at a noticeable distance from it, preferably in a zone that is located deep inside the vacuum cleaner, and therefore noise reduction in it is especially effective. Due to the fact that the flow of the second branch of the duct is connected to the flow of the first branch at a sufficient distance from the outlet, the noise that may occur in the swirl zone does not penetrate through the outlet.
The second branch of the duct may, in particular, form at least a side flow channel flowing into the first branch of the duct forming the main flow channel. Side branch channel can be considered any branch of the duct, which allows less air flow than the corresponding main flow channel. Preferably, the side flow channel is configured so that the flow rate of the exhaust air therein is higher than the flow rate of the exhaust air in the main flow channel.
Preferably, the side flow channel is connected to the main flow channel so that the side air flow supplied through the side flow channel to the main flow channel intersects with the main air flow. Due to the intersection of the secondary air flow with the main air flow, a particularly efficient swirl is ensured. The intersection occurs preferably in a mutually perpendicular direction of flow. However, the crossing of the main and secondary air flows can occur at other angles, for example, at an acute or even obtuse angle. Side and main air flows can even be directed towards each other.
The main flow channel is successfully located behind the motor-fan unit from the side opposite to the suction port. This position of the main flow channel allows you to direct the main air flow along the axis of the motor-fan unit in the direction of its outlet. If several secondary ducts are provided, then their length until they are connected to the main flow channel can be the same. Due to the same length of the secondary ducts, the swirl effect at each intersection of the secondary air flow with the main air flow is at least approximately the same.
Preferably, two side flow channels are provided extending along both sides of the motor-fan assembly. But it is possible to provide several pairs of side flow channels running along the opposite sides of the motor-fan assembly and preferably flowing into a common main flow channel.
Side flow channels have a rectangular cross section and are located mainly vertically. Due to this arrangement in the side flow channels, good traction is provided, and at the same time, the part of the vacuum cleaner housing in which the side flow channels are located is simple and economical to manufacture.
Preferably, each side flow channel is connected to the main flow channel through at least one inlet. The inlet can be made in the form of a circular hole in a thin partition between the secondary flow channel and the main flow channel. Due to this, a diaphragm with sharp edges is formed in the inlet area, at which an additional swirl of the exhaust air flow occurs. In this case, the cross section of the hole in the light is preferably made smaller than the cross section of the flow in the rest of the side flow channel.
In one preferred embodiment of the invention, the cross section of the at least one inlet is smaller than the cross-section of the side flow in the corresponding channel. Due to this, a narrowing of the cross section of the flow is formed in the transition zone from the side flow channel to the main flow channel. Such a throttle can also be made in the form of a venturi. Instead of one inlet in each side flow channel, several inlets can be provided, preferably two. The sum of the cross-sections of two or more holes must nevertheless remain less than the cross-section of the side flow in the rest of the channel.
At least one side flow channel and / or main flow channel can be positioned in a simple manner between a part of the fan casing and a part of the insulating capsule. Moreover, for the formation of side flow channels or the main flow channel, no additional parts are required. The walls of these flow channels are the existing walls of the part of the fan casing and part of the insulating capsule.
Preferably, part of the fan casing and part of the insulating capsule are made as monolithic parts. Due to this, on the inner walls of the side flow channels and the main flow channel there are no steps or edges that would have existed in the case of the use of prefabricated parts with dividing gaps. With a monolithic design, the inner walls of the side flow channels and the main flow channel can be smooth and not cause any harmful parasitic currents. As a part of the casing, the hood of the fan compartment can be successfully used.
Brief List of Drawings
A preferred embodiment of the invention is described in more detail using figures 1-5, which presents:
figure 1 is a perspective image of the lower bowl proposed in the invention of a vacuum cleaner;
figure 2 - the lower bowl of figure 1 in plan;
figure 3 - proposed in the invention a vacuum cleaner with a lower bowl in figure 1 and 2 in section;
figure 4 is a perspective image proposed in the invention of the hood of the fan compartment;
figure 5 - section proposed in the invention of a vacuum cleaner in the longitudinal plane.
The implementation of the invention
In an example implementation, the vacuum cleaner according to the invention has a housing 1, the lower bowl 2 of which is shown in FIG. The lower bowl 2 is a bathtub with a flat bottom 3 and a wall 4 surrounding it along the perimeter. The wall 4 rises from the edge of the bottom 3 mainly vertically upward. A handle 5 is formed at the front end of the lower bowl 2 on the outer side of the wall 4 to the lower bowl 2. A partition 6 is located approximately in the middle between the front end 7 of the lower bowl 2 and the rear end 8 of the lower bowl 2. The partition 6 extends from that shown in FIG. .1 on the left front side of the first section 9 of the side wall to the second section 10 of the wall 4 of the lower bowl shown to the right on the rear. The partition 6 divides the lower bowl 2 into the front compartment 11 of the dust collector and the rear compartment 12 of the fan. In the partition 6 there is an inlet funnel 13 through which air is drawn in from the dust collector compartment 11 into the fan compartment 12.
In the fan compartment 12, a first capsule element 14 is molded to the lower bowl 2. The first element 14 of the capsule is formed by the wall sections 15a, 15b and 15c of the first element 14 of the capsule, part of the septum 6 and part 3a of the bottom 3, limited by the sections 15a, 15b and 15c of the wall of the first element 14 of the capsule. In the rear wall section 15b, there is an open-ended cut-out forming the first socket 16 for the first supporting element 17 shown in FIG. 3. In the side wall sections 15a and 15c, there are holes 18a and 18b forming a flow connection between the internal cavity 19 bounded by the first element 14 of the capsule, and a section 20 of the flow channel 21. The section 20 of the channel and part of the flow channel 21 are bounded laterally by sections 15a, 15b and 15c of the wall of the first element 14 of the capsule and sections 22a, 22b and 22c of the wall of the compartment 22 of the fan assembly. The side sections 22a and 22c of the wall of the compartment 22 of the fan assembly are adjacent to the rear section of the wall 22b, extend in front of the partition 6 and form a closed compartment 22 of the fan assembly in more detail in FIG. A second holding socket 24 is formed to the partition 6 under the passage opening 23, forming a protrusion 25 protruding into the fan compartment. The protrusion 25 has a cup shape and is open from above. It passes along an annular line concentrically located around the passage opening 23, a second support element 26 is inserted into the protrusion 25, which together with the first support element 17 serves as a support for the motor-fan unit 27, shown in figure 2.
2, the flow direction is indicated by arrows P1-P6. The motor-fan assembly 27 is shown in a mounted position in the lower bowl 2 between the walls 15a, 15b and 15c. From the dust collector compartment 11, the air cleaned of dust with a filter bag or dust box (not shown) is sucked, as shown by arrows P1, through the inlet funnel 13 from the front compartment of the dust collector 11, shown in figure 2 to the right, into the rear, fan compartment 12, depicted in figure 2 to the left. The sucked air passes through the orifice 23 in the partition 6 and is supplied to the suction port 72 of the motor-fan unit 27, as shown by arrow P2. The sucked air passes through the motor-fan unit 27, exits the motor-fan unit 27 from the rear side, as shown by arrows RE, and enters the inner section 28 of the channel. In the inner portion 28 of the channel, air rushes between the wall of the casing of the motor-fan assembly 27 and sections 15a and 15 from the wall of the first capsule element 14 forward to the holes 18a and 18b. After the forward-moving air passes through the openings 18a and 18b from the inner duct portion 28 to the outer duct portion 20, the flow direction changes as shown by arrows P4 and air starts to flow backward in the outer duct portion 20. In the outer duct portion 20, the air at the rear wall of the motor-fan assembly 27 rotates at a right angle, as shown by arrows P5, behind the portion 15b of the first capsule element 14. The arrows P6 shown in FIG. 2 show that at the end of the outer duct portion 20, behind the motor-fan assembly 27, the air changes direction and leaves the plane of the drawing in FIG. 2, moving further between the vertical wall portion 29a of the second capsule member 30 and the wall 31 cap 32 of the fan compartment, as shown in Fig.3.
In Fig.3 proposed in the invention a vacuum cleaner with a lower bowl 2 according to Fig.1 and 2 is shown in section. Arrows P6, which are shown in FIG. 2, as extending from the plane of the drawing, are shown in FIG. 3 in the form of an arrow P6 pointing up. Air rushes up in the direction of arrow P6 along the main flow channel 33 between the wall portion 29a of the second capsule element 30 and the fan compartment cap 32. Air moves up the main flow channel 33 behind the motor-fan unit 27, and at the upper edge of the vertical wall section 29a changes its direction to horizontal. Now, the main flow channel 33 extends along the horizontal wall portion 29b of the second capsule element 30 under the cap 32 of the fan compartment to the outlet 34 located under the outlet filter 35. The inlet surface of the outlet filter 35 is adjacent to the outlet 34. The outlet filter 35 can trap solids, which are still contained in the air stream. Leaving the outlet surface of the exhaust filter 35, the cleaned air leaves the vacuum cleaner through a large number of exhaust openings 36 forming a plate exhaust grill.
A handle 5, a partition 6, wall sections 15 of the first element 14 of the capsule and sections 22 of the wall of the fan compartment 12 are molded to the lower bowl 2, which is a monolithic plastic part made by injection molding, The upper bowl 37 covers the fan compartment 12 and the cable chamber 38 for cable reel 39 (shown in FIG. 2). The upper outer contour of the vacuum cleaner ends with a dust collector cover 40, which is adjacent to the upper bowl 37 and extends from the rear end 41 near the outlet 36 to the front end 42. At the front end 42 there is a latch 43 that locks the dust cover 40 in the closed position with the latch 44 on the lower bowl 2. The wall 45 of the lid, formed to the lid 40 of the dust collector, surrounding the compartment 11 of the dust collector, enters the surrounding compartment 11 of the dust collector, groove 46, into which the sealing cord 47 is inserted. Groove 46 is molded to the upper edge ke molded to the lower bowl 2 of the wall 48 of the dust collector, which surrounds the compartment 11 of the dust collector. A hole 49 is provided in the dust collector lid 40 for entering dusty air, to which a suction hose fitting not shown can be connected. On the dust collector lid 40, there is a niche 50 opening on top to accommodate accessories 54a, 54b, for example, crevice, sofa, furniture accessories, or operating instructions and information sheets. The niche 50 opening from above is closed by a lid 52, reclining on a pin 51, fixed in the lid 40 of the dust collector. A removable box 53 can be inserted into the recess 51 to properly secure the accessories 54a, 54b, which is preferably blown out of a flat thermoplastic plastic sheet.
Figure 4 presents in a perspective image proposed by the invention, the cap 32 of the fan compartment. The cap 32 of the fan compartment is made in the form of a box of approximately rectangular shape. The first portion 56 of the side wall shown in FIG. 4 to the right and the second portion 57 of the side wall shown in FIG. 4 to the left and also the portion 58 of the rear wall are adjacent to the cap 55 at a right angle. The first portion 56 of the side wall, the second portion 57 of the side wall and the portion 58 of the rear wall are interconnected by their edges, together forming a U-shaped side wall of the cap 32 of the fan compartment. An outlet 34 is integrated in the lid 55. Towards the end of the lid 55, shown in front of FIG. 4, a front wall portion 29d of the second capsule member 30 is formed with a jumper 59. The front wall portion 29d of the second capsule element 30 is connected laterally to the first portion 56 and the second portion 57 of the side wall of the cap 32 of the fan compartment. The front wall section 29d is in the form of a semicircular disk and has a semicircular open notch 60 for accommodating the second supporting element 26 of the motor-fan assembly 27. Opposite the front wall section 29d is the rear vertical wall section 29a of the second capsule element 30, molded to the fan compartment cap 32. Between the rear vertical wall section 29a of the second capsule element 30 and the rear wall section 58 of the fan compartment cover 32, a main flow channel 33 extends towards the outlet 34 in the lid 55. Between the wall sections 29a and 29d, the vertical side wall sections 29b and 29c are arranged cap 32 of the fan compartment. Between the side wall portion 29c and the first side wall portion 56, a first side channel 61a extends. A second side channel 61b extends between the side wall portion 29b and the second side wall portion 57.
In Fig. 5, the first side channel 61a and the second side channel 61b are shown in sectional view of a vacuum cleaner according to the invention in a longitudinal plane. The lower bowl 2 with the molded sections 22a and 22c of the wall of the fan compartment 12 is shown. Inside the fan compartment 12, the wall sections 15a and 15c of the first element 14 of the capsule are molded to the bottom 3. The first side channel 61a is bounded by a wall portion 22a and a wall portion 15a. As arrows P8 show, the first side air flow moves upstream in the side channel 61a between the wall portion 29c and the first side wall portion 56 of the fan compartment cap 32, and the second side air flow moves up the side duct 61a between the wall portion 29b and the second side portion 57 the walls of the cap 32 of the fan compartment. A groove 63 for sealing is formed on the lower edge 62 of the side wall portions 56 and 57 and the rear wall portion 58 (not shown). The upper annular edge 64 of the wall sections 22a, 22b and 22c enters the groove. Alternatively, a sealing cord not shown may be inserted into the groove. A seal 63 closes the connector between the cap 32 of the fan compartment and the fan compartment 12. Another seal 65 is provided between the first capsule member 14 and the second capsule member 30. The seal 65 is designed as a labyrinth seal. For this, the wall sections 15a, 15b and 15c of the wall of the first capsule element 14 partially overlap the wall sections 29a, 29b and 29c of the wall of the second capsule element 30.
The side air flows directed vertically upward along the arrows P8 are poured through the openings 66 into the main flow channel 33. Moreover, as shown by the arrows P9, the side air flows are directed perpendicular to the main air flow. Arrow P7, which in FIG. 3 is directed from left to right, in FIG. 5 is depicted in the form of arrow P7 emerging from the plane of the drawing. Due to the collision of the side air flows P9 and the main air flows P7 at a right angle, air swirls and dissipates and enters the outlet 34, as shown by arrow P10. Above the outlet 34, there is an exhaust filter 35 inserted into the holder 67 (FIG. 4), molded to the cap 32 of the fan compartment. The holder has an annular ledge 68 with a seal 68 molded to it, on which the exhaust filter 35 lies. As shown in FIG. 4, not only the holder 67, but also the cable channel 70 are molded to the cap 32 of the fan compartment.
1. A vacuum cleaner with a housing (1) and an outlet (36) for exhaust air, connected through the air flow to the pressure side of the motor-fan unit (27) through a flow channel (21), divided to divide the air flow into several branches (33) , (61a), (61b) converging in front of the outlet (36), characterized in that two or more side flow channels (61a, 61b) are located on the opposite sides of the motor-fan unit (27), which are fall into the first branch (33) forming the head a flow channel passing behind the side of the motor-fan unit (27) opposite the suction port (72), and side flow channels (61a, 61b) are connected to the main flow channel (33) so that the side air flows supplied through the side flow channels (61a, 61b) to the main flow channel, cross the main air flow.
2. The vacuum cleaner according to claim 1, characterized in that at least two side flow channels (61a, 61b) have a rectangular cross-section and are located mainly vertically.
3. A vacuum cleaner according to claim 2, characterized in that each side flow channel (61a, 61b) is connected to the main flow channel (33) by at least one supply opening (66).
4. A vacuum cleaner according to claim 3, characterized in that the cross section of at least one supply opening (66) is smaller than the cross section of the corresponding side flow channel (61a, 61b).
5. A vacuum cleaner according to one of claims 1 to 4, characterized in that at least one side flow channel (61a, 61b) and / or the main flow channel (33) passes between part (12) of the fan casing and part (14, 30) an insulating capsule.
6. A vacuum cleaner according to claim 5, characterized in that part (12) of the fan casing and part (14, 30) of the insulating capsule are monolithic parts.
7. A vacuum cleaner according to claim 5, characterized in that the cap part (32) of the fan compartment is a part of the casing.
Priority Applications (2)
|Application Number||Priority Date||Filing Date||Title|
|DE2003136828 DE10336828B4 (en)||2003-08-11||2003-08-11||Vacuum cleaner with exhaust air flow channels|
|Publication Number||Publication Date|
|RU2006103276A RU2006103276A (en)||2006-07-27|
|RU2330597C2 true RU2330597C2 (en)||2008-08-10|
Family Applications (1)
|Application Number||Title||Priority Date||Filing Date|
|RU2006103276/12A RU2330597C2 (en)||2003-08-11||2004-08-10||Vacuum cleaner with outlet air channels|
Country Status (7)
|EP (1)||EP1656061B1 (en)|
|CN (1)||CN100475118C (en)|
|AT (1)||AT533391T (en)|
|DE (1)||DE10336828B4 (en)|
|ES (1)||ES2374397T3 (en)|
|RU (1)||RU2330597C2 (en)|
|WO (1)||WO2005016106A1 (en)|
Families Citing this family (7)
|Publication number||Priority date||Publication date||Assignee||Title|
|DE10148509B4 (en) *||2001-10-01||2008-01-24||BSH Bosch und Siemens Hausgeräte GmbH||Canister|
|DE102008041228A1 (en) *||2008-08-13||2010-02-18||BSH Bosch und Siemens Hausgeräte GmbH||vacuum cleaner|
|DE102010001140B4 (en) *||2009-12-30||2012-03-15||BSH Bosch und Siemens Hausgeräte GmbH||Vacuum cleaner with mesh guard|
|DE102011007212B4 (en) *||2011-04-12||2020-04-23||BSH Hausgeräte GmbH||Vacuum cleaner with divided air flow channel|
|GB2534303B (en) *||2013-03-13||2017-05-17||Techtronic Floor Care Tech Ltd||A source of suction for a vacuum cleaner|
|GB2548574B (en)||2016-03-21||2018-04-04||Dyson Technology Ltd||Vacuum cleaner having a filter assembly|
|CN105996891B (en) *||2016-07-25||2018-06-29||江苏美的清洁电器股份有限公司||The host and dust catcher of dust catcher|
Family Cites Families (6)
|Publication number||Priority date||Publication date||Assignee||Title|
|DE2460863C2 (en) *||1974-12-21||1985-01-24||Vorwerk & Co Interholding Gmbh, 5600 Wuppertal, De|
|DE7908622U1 (en) *||1979-03-27||1980-02-21||Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt|
|US4533370A (en) *||1982-03-30||1985-08-06||Sharp Kabushiki Kaisha||Electric cleaner with minimum noise|
|DE3815320C3 (en) *||1988-05-05||1998-02-12||Aeg Hausgeraete Gmbh||vacuum cleaner|
|US4970753A (en) *||1990-02-23||1990-11-20||Ryobi Motor Products Corp.||Vacuum cleaner noise reducing arrangement|
|AU707268B2 (en) *||1995-10-10||1999-07-08||Nilfisk A/S||A silencer for a suction cleaner|
- 2003-08-11 DE DE2003136828 patent/DE10336828B4/en not_active Expired - Fee Related
- 2004-08-10 WO PCT/EP2004/008952 patent/WO2005016106A1/en active Application Filing
- 2004-08-10 ES ES04741398T patent/ES2374397T3/en active Active
- 2004-08-10 EP EP20040741398 patent/EP1656061B1/en active Active
- 2004-08-10 CN CNB2004800231104A patent/CN100475118C/en not_active Expired - Fee Related
- 2004-08-10 AT AT04741398T patent/AT533391T/en unknown
- 2004-08-10 RU RU2006103276/12A patent/RU2330597C2/en not_active IP Right Cessation
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Effective date: 20190811