SI22922A - Vacuum cleaner separator - Google Patents

Abstract

The vacuum cleaner separator, preferably a household vacuum cleaner is made from a central rotating part (2) which consists of a basic cylindrical section (3) which runs on the side to the turbowheel (4), where on the enclosure of the rotating part (2) there are blades (6). Typical of the separator according to the invention is, that the rotating part (2) is in the axial direction extended by section (5) which is designed as an enclosure with section (3) of a coaxial truncated cone, which is with the smaller diameter side in contact with section (3) and that the blades (9) continue to section (5). The external edges (10) of the blades (9) are located on a virtual enclosure of the truncated cone, whose larger diameter lies fittingly on the turbowheel (4). The blades (9) are interconnected on the side of the turbowheel (4) by a sealing ring (11) which is located in the opening (12) of the enclosure (13) of the turbowheel (4).

Description

Dust Vacuum Cleaner Separator

The subject of the invention [θθΐ] The object of the invention is a separator for a vacuum cleaner, preferably a household vacuum cleaner.

Technical Problem [002] The technical problem solved by the invention is how to design such a vacuum cleaner separator that, at the intended operating pressure and flow rate, will achieve the predicted extraction of dust particles at an increased rotational speed of the entire suction unit, including a separator, preferably between 30,000 and 50,000 rpm using affordable materials and fabrication processes, allowing the separator construction to balance rotating parts in an easy, high-quality manner and maintain the easy assembly of the intake assembly, due to the anticipated high speeds sealing between the rotary separator and the stationary intake manifold to ensure adequate quality and planned product life at a reasonable market price. Furthermore, the design of the separator should allow it to be mounted independently on the axle or made in one together with the turbo wheels.

WPM $ 62CE.doc / XII-08 / Vr

BACKGROUND OF THE INVENTION Several such inventions are known, which are presented in various patent documents.

[004] EP 1 261 269 (Hyla Manufacture, Development and Trade d.o.o.) is the invention of a separator consisting of several axially assembled segments in which aero wing blades are arranged around the circumference. All blades are positioned with respect to the separatoi housing equally. The construction is mechanically relatively rigid and also suitable for high speeds, because the blades are relatively short due to the complexity of the segments. In the said embodiment, it is possible to balance the separatoi mounted on the rotor shaft, with the suction unit cover being retrofitted. The disadvantage of the described embodiment is the complex construction of a large number, preferably six components, and consequently high production cost. The sealing between the separator and the housing is accomplished by means of an airflow created by the turbocharger when interacting with the air guides on the inside of the suction unit cover. The disadvantage of sealing is the large aerodynamic losses that occur due to the high-energy part of the air flow, which is used to return the fluid back to the liquid bath after exiting the turbo.

[005] US 6 391 101 (Gustafson, Kassien) describes this invention, wherein the shape (cross-section) of otherwise identical blades is perfected. For the improved separation of the secondary particles according to the present invention, additional circularly arranged freely projecting blades are provided, which are located at the bottom of the separator.

[006] It appears that the embodiment described above, due to the construction of the separator blades, is unsuitable for high speeds. It is also feasible to balance the rotorium of the blower and the separator only sequentially according to a technological procedure in which the separator is mounted before the final assembly and

WPM $ 62CE.doc / XII-08 / Vr is being dismantled, increasing the total assembly time and the number of operations, and thus the price of the final product. An alternative is to further balance the separator itself, preferably in the assembly, e.g. by removing the separator material, which reduces the mechanical strength and adversely affects the appearance of the separator itself. Manufacturers preferentially install separators without using the balancing procedures described above, resulting in increased vibrations and noise of the intake unit and consequently a shorter life span. The problems described are particularly pronounced at high rotational speeds of the suction units.

[007] The same problems described in the above paragraph are also present in the separators disclosed in the patent files EP 1 219 223 (Gisovatt spa industria elettrodomestici) and EP 0 890 335 (Vetrella spa) and in patent application P 2007 0 0143 (Domel dd).

Solution to a Technical Problem [008] The technical problem described is solved by a separator according to the invention, characterized by the fact that it consists of a rotary core, which is made with a coaxially running hole for receiving the axis of the electric motor, and which extends conically at the free end when near the opposite part, i.e. adjacent to the turbo wheel, made with a ring connecting the blades to each other, which simultaneously acts as a dynamic sealing ring with respect to the suction unit cover. The blades are mounted throughout their height on the swirl core. A characteristic feature of the blades is that their outer free edge extends on the mantle of a virtual truncated cone, the larger diameter of which lies adjacent to the turbo wheels, or the smallest diameter at the opposite end, while their inner edge lies at the eddy core already described. This design achieves such a flow of air through the separator due to the pressure generated by the turbine so that part of the air jet in the vicinity of the turbocharger is directed radially outwards along the gap between the ring on the separator due to the centrifugal force exerted by the section of the larger-diameter separator. the suction unit cover so that, depending on the others, they change each time

WPM $ 62CE.doc / XII-08 / Vr conditions, a relatively small air flow is achieved due to the small pressure difference on either side of the gap between the separator ring and the suction unit cover, either in the direction of the turbo or in the opposite direction. The air passing through the slot is already cleaned in both cases and therefore does not reduce the quality of the suction. Energy is transferred to the air jet for its radially outward directed path through the separator. This radially outward-directed portion of the air jet has lower energy compared to the outlet of the turbocharger, so the energy consumption to provide flare between the separator ring and the intake manifold cover is significantly lower than in the solutions described earlier. The end result is greater utilization of the device as a whole.

[009] Namely, in the separator, an air stream flowing from the surroundings of the higher-pressure separatoi flows through the slots between the blades into the interior of the separator, where it travels in parallel with the blades from the bottom of the separator towards the outlet of the separator in the direction of the turbo wheel, which creates an air pressure and flow. It is therefore necessary to regulate the pressure and velocity of the air flow inside the separator so that there is no turbulence of the air flow inside the separator and consequently lower efficiency of the device as a whole.

[0010] Said separatoi design enables balancing of an assembly consisting of a pre-balanced electromotor rotor, further mounted on a turbocharger and separator on the same shaft, whereby such balancing is carried out when the assembly is already in its working position. This last balancing is followed only by the last mounting operation, i.e. installation of turbo wheel cover. This significantly reduces the number of assembly operations of the intake unit compared to the solutions described earlier.

[0011] The invention is explained in more detail based on the description of the embodiment and the drawings in which it is shown

WPM $ 62CE.doc / XI Ι-08 / Vr fig. 1 is a partial cross-sectional view of a suction unit with a separator according to the invention; 2 is a sectional view of a separator according to the invention; 3 is a perspective view of a separator according to the invention with turbochargers in one, FIG. 4 is a perspective view of the separator according to the invention.

[0012] The vacuum cleaner separator 1, preferably a household vacuum cleaner, is made of a central swirl part 2 consisting of a cylindrical section 3 extending at least half the length of the separator 1 and a section 5 designed as a sheath with section 3 of the coaxially extending cone, which contacts the smaller diameter side with section 3. In the cylindrical section 5, there is a coaxially extending bore 6 for receiving the shaft 7 of electromotor 8. The blades 9 of the said swivel portion 2 are preferably provided. in the radial direction and in a known manner are shaped in cross-section to achieve a good passage of air jet between them, which is created by the turbo 4. This is characterized by the fact that the outer edges of the blades 9 lie on a virtual sheath of a truncated cone whose larger diameter lies adjacent 4. Given the shape of the swivel portion 2 and the outline of the outer edges 10, the width of the blades 9 is different. This achieves the optimum laminar flow of the air jet between the blades 9, which contributes to the good utilization of the device as a whole.

[0013] The blades 9 are interconnected on the side of the turbo wheel 4 with a sealing ring 11 which at the same time gives the blades-9 sufficient rigidity, which is absolutely necessary due to the predicted high rotations of the separator 1. At the same time, the ring is intended to lie in the opening 12 of the suction lid. units and 13 of the turbo wheels 4 so as to form an opening with a hole 12 through its outer surface. The slot 14 thus designed allows the housing 15 to be positioned without obstruction only after the last balancing of all rotating parts, once complete.

WPM $ 62CE.doc / XII-08ZVr [0014] The already described geometry of the outer edges of the 10 blades 9 to rest on the mantle of a virtual truncated cone gives a portion of the air jet near the turbo wheel 4 sufficient centrifugal force to overcome the pressure generated by the turbo. 4 so that this portion of the jet is directed radially outwards past slot 14. The pressure conditions of the air jet can be varied along slot 14 due to the possible and intended wider working area of the vacuum cleaner as a result of installation in different vacuum cleaners, use of different suction nozzles, changing surface tdl, possible applications and cleanliness of the outlet air filter. Namely, a suction unit with a separator according to the invention is intended for installation in a vacuum cleaner with or without an air filter on the outlet side of the air jet. If an air filter is installed, it should be noted that the air resistance in the filter increases with its soiling. In the case where the air resistance at the outlet side of the suction unit is small (clean air filter), the pressure in the area of the turbo wheel 4 is small and therefore the air jet in the slot 14 is directed outwards towards the separator 1 where it joins with the radially smiling part of the air jet.

[0015] However, if the pressure near the turbo 4 is increased due to increased air resistance at the outlet side of the suction unit, e.g. due to the dirty filter, the air jet is directed through the slot 14 through the slot 14 towards the turbocell 4. The air flowing through the slot 14 is part of a radially outward directed air jet directed by separator 1. This air is already purged and does not reduce the degree filtration of dust particles and water droplets of the vacuum cleaner.

[0016] In the inner region of the conical section 3, that is, on the free front face of the swirl part 2, additional blades 16 may be provided which contribute to the formation of as homogeneous water mist as possible in terms of the uniform size of the individual water particles, which ensures the effective reception of dust particles with individual water particles, which is one of the basic conditions for the effective filtration of dust particles. Preferably, the number of blades 16 is equal to the number of blades 9. To achieve the intended rigidity of the separator per se, blades 9 and 16 are operated

WPM $ 62CE.doc / XII-08 / Vr by interconnecting in section 3 within the smallest possible distance between them, such construction permitting reduced wall thickness of part 3, thereby desirably reducing the weight of the separator.

[0017] In the case of separators of preferably larger dimensions, a turbulent air jet movement may occur between the blades 9, which would reduce the efficiency of the suction unit. In this case, additional blades 17 are provided in the area adjacent to each other! blades 9 to reduce air jet turbulence. These additional blades 17 may be shorter and of any cross-section and are positioned where it is determined by tests of the bursting of the air flow lamination.

[0018] Contributing to the laminate air flow as much as possible contributes to the treatment of the blade area 9 at the free portion of separator 1, i.e. opposite the turbo wheels 4. The blades 9 are made in this section by a shot 18 which may be obliquely straight or rounded.

[0019] It is understood that one of skill in the art may, based on knowledge of the description of the above invention and its described embodiment, also conceive of different embodiments, especially in terms of different industrial design or arbitrary dimensioning of the blades and slots between them, without circumventing the features of the invention as defined in the following claims.

Claims (5)

Patent claims A vacuum cleaner separator (1), preferably a household vacuum cleaner, which is made of a central swirl part (2) consisting of a basic cylindrical section (3) extending on the side of the turbo wheel (4) and comprising a coaxially extending bore (6 ), wherein the blades (9) are provided with blades (9), characterized in that the blades (2) are extended in the axial direction by a section (5) which is designed as a coaxial section (3) a truncated cone that contacts the smaller diameter side with a section (3), and that the blades (9) extend to the section (5), with the outer edges (10) of the blades (9) lying on the virtual sheath of the truncated cone, of which the larger diameter is adjacent to the turbo wheel (4) and that the blades (9) are interconnected on the side of the turbo wheel (4) with a sealing ring (11) which lies in the opening (9) of the turbo wheel (4) housing. Separator according to claim 1, characterized in that additional blades (16) can be provided in the inner region of the conical section (3), ie on the free front face of the rotary part (2). Separator according to Claims 1 and 2, characterized in that the preferred number of blades (15) is equal to the number of blades (9) and that the blades (9) and (16) extend by contacting in the smallest section (3) distance between them. Separator according to claims 1 to 3, characterized in that additional blades (17) may be provided in the area between adjacent blades (9), the blades (17) being shorter and of any cross section. Separator according to claims 1 to 4, characterized in that the area of the blades (9) at the free part of the separator (1), i.e. opposite the turbo-wheels (4) made by means of a shot (18) which may be obliquely straight or rounded.