Suction inlet unit for vacuum cleaner

FIELD: mechanical engineering.

SUBSTANCE: suction inlet unit for vacuum cleaner having low pressure source is equipped with lower casing including first and second suction openings, upper casing connected to lower casing so as to define connection channel for first and second suction openings, and noise volume decreasing unit extending along connection channel which is in fluid communication with low pressure source.

EFFECT: increased efficiency in sucking of dust at both sides of vacuum cleaner.

20 cl, 7 dwg

 

CROSS-REFERENCE TO RELATED APPLICATIONS

The priority of this application is claimed in a patent application in Korea No.2004-88648, which filed November 3, 2004 in the Management of Intellectual Property Korea and the description of which is fully incorporated into the present application by reference.

BACKGROUND of the INVENTION

The scope of the invention

The present invention relates to a vacuum cleaner. More specifically, this invention relates to a suction input node of the vacuum cleaner, designed to draw impurities from the surface.

Description of the prior art

In General, vacuum cleaners draw the dust from the surface being cleaned through the suction force created by the vacuum source installed inside the housing of the vacuum cleaner. Such vacuum cleaners include a housing in which is installed a vacuum source, the suction input node for retracting dust, addressed to the cleaning surface and the extension channel, designed to channel the dust drawn in through the suction input node.

As usual suction input nodes have the suction hole, to which the suction force is transmitted, providing retraction of the dust in the middle, then at the same suction power is concentrated in the middle part of the suction input of the node where the suction hole, at that time the I side of intake of the input node is less exposed to the suction power. The consequence is the deterioration of the efficiency of absorption in the lateral parts in comparison with the Central part.

To overcome these shortcomings in U.S. patent No. 6532622 was proposed method, according to which on both sides of the suction input node is the pair of suction holes. However, in this case the disadvantage is that the flow of dust-Laden air drawn in through a pair of suction holes, come together near the narrow outlet opening connected to the extension connector, resulting in noise due to an increase in flow rate and turbulence of air created by the collision of air flows with each other.

The INVENTION

In one aspect of the present invention offer a solution to at least the above problems and/or eliminate disadvantages and provide at least the following advantages. Accordingly, an aspect of this invention is to provide a suction input node of the vacuum cleaner, in which equally improved suction efficiency on both sides of the suction input of the node.

To accomplish the above aspects of the present invention features a suction input node cleaner containing lower case, in which there are first and second inlet is covering the holes, the upper body is connected with the lower casing with the formation of the connecting channel to the first and second suction holes, and noise reduction site, located along the connecting channel. The upper housing includes a cover of the channel and the top cover attached to the lower housing above the cover of the channel.

Noise reduction the node can contain the first noise reduction edge that has a first inclined holes, and the second noise reduction edge, which has a second slanted holes. The first and second noise reduction edges can be essentially symmetrical to each other.

The connecting channel in the middle part of the rear wall may have an outlet opening for air, while the first noise reduction edge can be installed along the back wall of the connecting channel to the right of the outlet air, and the second noise reduction edge can be installed along the back wall of the connecting channel to the left of the outlet for the air.

The heights H2 and H3 of the first and second noise reduction edges can be reduced respectively to the right and to the left from the output of the air hole, the edges can be bent respectively in the direction of the first and second suction holes.

The first and second slanted holes may be inclined at angles θ1 & #x003B8; 2 in the direction of release of the dust-Laden air through an outlet opening for air. Angle values θ1 and θ2 may lie in the range from about 40° to 70°.

The width W1 and W2, respectively, the first and second inclined holes may be approximately from 0.5 to 1.0 of the distances D1 and D2 between the first inclined holes and between the second inclined holes.

Suction input node may further comprise first and second noise absorbing elements mounted on both sides of the connecting channel.

The first sound-absorbing element can be located between the first noise reduction edge and the connecting channel and the second sound-absorbing element may be installed between the second noise reduction edge and connecting channel.

Height N5 and N6, respectively, the first and second sound-absorbing elements can be decreased gradually to the right and to the left from the outlet for air, these elements can also be bent in the direction respectively of the first and second suction holes.

The first and second shock-absorbing elements can be made of a porous material.

BRIEF DESCRIPTION of DRAWINGS

The above aspect and other properties of the present invention will be more apparent from the detailed description tipovi the embodiments of the present invention with reference to the accompanying drawings, on which:

figure 1 depicts a schematic view of a vacuum cleaner containing a suction input node in accordance with a variant implementation of the present invention;

figure 2 depicts an exploded view of a perspective view of the suction input node, shown in figure 1;

figure 3 depicts a rear view of a perspective view of the suction input node, shown in figure 1;

figure 4 depicts a top view of the suction input node, shown in figure 1;

figure 5 depicts an enlarged top view of part of the suction input node, shown in figure 4, which shows the first noise reduction edge and the first sound-absorbing element;

6 depicts an enlarged view of a perspective view of part of the suction input node, shown in figure 4, which shows the first noise reduction edge;

7 depicts an enlarged view of a perspective view of part of the suction input node, shown in figure 4, showing the first sound-absorbing element.

DETAILED DESCRIPTION of EXEMPLARY embodiments

Described in more detail below typical embodiment of the present invention with reference to the accompanying drawings.

In the following description, the same item numbers refer to the same elements even in different drawings. Defined in the description of objects, such as the design and the elements are the Xia only means a better understanding of the invention. Thus, it is obvious that the present invention may be made without the definitions of these objects. In addition, well-known functions or design is not described in detail because they hinder the understanding of the description of the introduction of non-essential details.

As shown in figure 1, the vacuum cleaner 100, containing a suction input node 200 in accordance with a variant implementation of the present invention, includes a housing 110 having a source of vacuum (not shown), the suction input node 200 that is designed to draw dust from the surface being cleaned through the power of the suction created by the vacuum source, and an extension channel 120, which is connected with a suction input node 200 and designed to channel pull-through site 200 dust into the body 110 of the vacuum cleaner. Extension channel 120 includes extension connector 126 attached can be rotated to the node 200, the extension pipe 124 and the suction hose 122, one end of which is connected with an extension pipe 124 connected to the connector 126 and the second end to the body 110 of the vacuum cleaner.

As shown in figure 2 and 3, the suction input node 200 in accordance with the standard variant of implementation of the present invention includes a lower housing 210, the upper housing 250 and noise reduction node 300.

The lower housing 210 has a first suction open the e 211 and the second suction hole 212, located at a distance from each other and designed to draw dust from the surface being cleaned.

Hole 211 is made in the lower part of the lower housing 210 at a specified distance to the right of the partition wall 213, and a hole 212 is made in the lower part of the lower housing 210 at a given distance to the left of the partition 213.

Due to the presence of the first and second holes 211 and 212 of the suction force in the preferred case of uniformly betrayed to the middle part M and the side S of the suction input node 200. That is, dust-Laden air drawn into the middle part M in the direction Q1 of the arrow, and dust-Laden air drawn into the sides of S in the direction Q2 and Q3, shown by arrows, can be continuously held in the suction input node 200.

Consequently, it is possible to ensure efficient suction side S with the same success as in traditional designs suction input node with one suction inlet located only in the middle part M Also by improving the efficiency of suction in the middle part M may increase the area of the surface being cleaned. Although the first and second holes 211 and 212 in the present embodiment have a semicircular shape, their shape is not limited. Suction holes 211 and 212 can be of any shape, for example four is the oval or triangle.

To improve the purification efficiency in the lower body 210 is made first and second lower holes 216 and 217, and the first and second channels 214 and 215 for dust. Top cover 230 may include first and second upper openings 231 and 232.

The first and second lower holes 216 and 217 are in the bottom of the lower housing 210, with the first bottom hole 216 has a tilt to the right, and the second lower hole 217 is tilted to the left with respect to the partition wall 213.

In this embodiment, the first and second lower holes 216 and 217 are rectangular in shape, but can have any shape, such as oval or triangle. Their location may vary depending on the location of the first and second suction holes 211 and 212.

The first channel 214 for dust passes through the first lower hole 216 in the lower part of the lower housing 210, and through the first suction hole 211, starting to the right of the partition walls 213 and ending at the right side 210b of the lower housing 210. The second channel 215 for dust passes through the second bottom hole 217 in the lower part of the lower housing 210, and through the second suction hole 212, starting to the left of the partition walls 213 and ending at the left side s lower housing 210.

Due to the above design outside air drawn through the PE the first and second upper openings 231 and 232, respectively, in the directions F1 and F2, shown by the arrows, passes into the hermetically sealed suction input node 200 (Fig 1) in the direction F3 and F4, shown by arrows, and sent to the bottom of the lower housing 210 through the first and second lower holes 216 and 217.

Directed outside air scatters the dust that has accumulated between the first and second channels 214 and 215, while the dust-Laden air containing scattered dust is drawn into the first and second suction holes 211 and 212 by the first and second channels 214 and 215 in the direction F3 and F4, as shown by the arrows. Accordingly, the dust located between the first and second channels 214 and 215 may be easily cleaned, improving, thus, the cleaning efficiency.

As shown in figure 2 and 4, the upper housing 250 includes a lid 220 of the channel and the top cover 230. The cover 220 and the upper cover 230, which in this typical embodiment, the executed separately, can be performed as a single unit.

Cover 220 is attached to the lower housing 210 with the formation of the connecting channel 221, intended for the connection of the first and second suction holes 211 and 212.

More specifically, the upper wall of the channel 221 is formed by a cover 220, and the lower portion and the rear wall 210d channel 221 is formed by the lower housing 210.

The cover 220 has, essentially, arched or arcuate land located ver talino with respect to the direction of flow of the air drawn in, he U-shape curved along its length when viewed in the direction X1, as shown by the arrow. Essentially, the cover 220 has a maximum height H1 at its center, which gradually decreases in the direction of both parties.

Cover 220 is preferably made of a transparent material so that the user can monitor the movement breathe in dust.

As shown in figure 2, the upper cover 230 is connected with the lower housing 210 over the cover 220 with the formation of the sealed space inside the suction input node 200. Top cover 230 has first and second upper openings 231 and 232, intended for communication with the outside air, as described above. Outside air passing through the tight space and drawn through the first and second upper openings 231 and 232 may be issued in the first and second lower holes 216 and 217 (Fig 3).

Top cover 230 includes a cut out section 233 in the form corresponding to the cover 220 so that the cover 220 is seen relative to the input node 200. In other words, the cover 220 protrudes outward from the top cover 230 through the cut out section 233.

Although the first and second upper openings 231 and 232 is made in the form of slits in accordance with the standard option of perform, also possibly a different number, other shapes and sizes of holes such as the through hole is participation. Alternatively, you may create a protective element or valve for the first and second upper openings 231 and 232 so that the first and second upper openings 231 and 232 is opened only for those entering the inside of the air.

As shown in Fig.2-4, the outlet e for air made in the middle of the back wall 210d channel 221, and in this hole I inserted extension connector 126 (Fig 1), which is installed with the possibility of rotation and/or rotation.

The flow of dust-Laden air drawn in from the first suction hole 211 in the direction of the Q5, shown by the arrow, and from the second suction holes 212 in the direction of Q6 as shown by the arrow converge to the outlet e.

Because the flow of dust-Laden air drawn in through holes 211 and 212 and then converging to the outlet e, together produced through the connector 126, you may experience noise caused by the increase in flow rate and turbulence of air created in the collision of air flows with each other. In addition, noise may be caused by pressure and the direct collision of air flows from the rear wall 210d.

As shown in figure 2, the channel 221 contains noise reduction node 300 that prevents such noise and having first and second noise reduction ribs 310 and 320, as well as the PE the first and second noise absorbing elements 330 and 340.

The first and second ribs 310 and 320 are preferably symmetrical to each other relative to the channel 221, however, they can be made from plastic, such as acrylic. Also for the manufacture of the ribs 310 and 320 may use other materials, such as glass and metal.

Since the first and second ribs 310 and 320 have the same form as detailed descriptions of the first and second ribs 310 and 320 are described below only the first edge 310, depicted in figure 5 and 6.

The first edge 310 is installed along the rear wall 210d channel 221 in the direction R indicated by the arrow, i.e. to the right of the hole a.

This allows the dusty air as possible to come into contact with the rear wall 210d, as dusty air with a high probability deviates to the rear wall 210d channel 221 in the process of passing from the first suction hole 211 of the channel 221 due to the curved shape of the channel 221. Therefore, the installation of the first edge 310 along the back wall 210d allows you to more effectively counteract the noise.

As shown in figure 5, the first element 330 is inserted between the first edge 310 and a back wall 210d channel 221.

As shown in figure 2, the first edge 310 is made with a gradual decrease of the height H2 in the direction R indicated by the arrow, i.e. to the right, and the design of isign is in the direction of the first suction hole 211.

The first edge 310 is executed, as described above, with the height of the cover 220 and forms a back wall 210d channel 221, which facilitates its installation in the channel 221. In addition, the dust-Laden air may pass through the channel 221, experiencing less resistance from the first edge 310.

As shown in figure 5, the first edge 310 has a first slanted holes 310a, tilted at an angle θ1 to the vertical in the direction of the Q5, shown by the arrow, i.e. in the direction of movement of the dust-Laden air from the first suction hole 211 to the outlet e. In this case, the value of angle θ1 of inclination lies in the range from about 40° to 70°.

This inclination prevents direct passage of the first inclined holes 310a of the dust-Laden air passing through the channel 221. More specifically, the dust-Laden air in the process of passing through the channel 221 in the direction of the Q5, shown by the arrow, comes in the first slanted holes 310a in Q8 direction of the arrow with the direction of the movement. For this purpose the angle θ1 may limit the scattering and deflection of the dust-Laden air passing in the direction of the Q5, shown by the arrow.

The width W1 of the first inclined holes 310a is approximately from 0.5 to 1.0 distance D1 between the holes 310a. Dusty air partially flows through the first holes 310a having the width W1.

As shown in figure 2 and 7, the first element 330 has a height H5, gradually decreasing in the direction R indicated by the arrow, i.e. to the right of the outlet e, while it is curved in the direction of the first suction hole 211 with software installation or another location between the first edge 310 and a back wall 210d channel 221.

The first element 330 again reduces noise, which at first was reduced first edge 310, which in the first element 330 can be used porous materials such as porous materials, conventional filters and foams.

The following describes the relationship between the first element 330 and the first rib 310.

As shown in figure 2, 5 and 7, the rear side 330b of the first element 330 is preferably attached to the rear wall 210d channel 221 using glue. Further, the first edge 310 is attached to the front face 330a of the first element 330 with glue, so that the first edge 310 and the first element 330 is installed along the channel 221.

However, the first sound-absorbing element 330 is not an indispensable element of the present invention. In the absence of the first element 330 first edge 310 can be attached directly to the rear wall 210d channel 221. In addition, instead of glue you can use other ways of fastening the first edge 310 and the first element 330, for example by means of screws or welding

As shown in figure 2 and 4, the second edge 320 is attached along the rear wall 210d channel 221 in the direction L shown by the arrow, i.e. to the left from the outlet a. The second element 340 is inserted between the second edge 320 and a back wall 210d channel 221.

The second edge 320 has a height H3, gradually decreasing in the direction L shown by the arrow, i.e. to the left from the outlet e for air, it is bent in the direction of the second suction hole 212.

Cause the specified shape and position of the second edge 320 is the same as for the first edge 310.

The second edge 320 has a second slanted holes 320S, tilted at an angle θ2 to the vertical in the direction of Q6, as shown by the arrow, i.e. in the direction of movement of the dust-Laden air from the second suction holes 212 to the outlet e. In this case, the value of angle θ2 tilt is in the range from about 40° to 70°.

The specified slope prevents direct passage of the second inclined holes 320S dust-Laden air passing through the channel 221. More specifically, the dust-Laden air in the process of passing through the channel 221 in the direction of Q6 as shown by the arrow enters the second inclined holes 320S in Q9 direction of the arrow with the direction of the movement. For this purpose the angle θ2 may limit the th scattering and deflection of the dusty air, passing in the direction of Q6, as shown by the arrow.

The width W2 of the second inclined holes 320S is approximately from 0.5 to 1.0 distance D2 between these holes 320S. Dusty air partially flows through the second slanted holes 320S, having a width W2.

As shown in figure 2, the second element 340 has a height h6, gradually decreasing in the direction L shown by the arrow, i.e. to the left from the outlet e for air, he bent in the direction of the second suction holes 212 for installation or other placement between the second edge 320 and a back wall 210d channel 221.

The second element 340 again reduces the noise, which was initially reduced the second edge 320, which in the second element 340 can be used porous materials such as porous materials, conventional filters and foams.

Because the relationship between the rear wall 210d, the second element 340 and the second edge 320 is similar to the relationship between the rear wall 210d, the first element 330 and the first rib 310, the description of this relationship is not repeated.

Below is a description of the operation of the vacuum cleaner 100, which uses suction input node 200 in accordance with a variant implementation of the present invention.

As shown in figure 1, the suction created by the vacuum source (not showing the n), mounted in the body 110 of the vacuum cleaner, is transmitted to the suction input node 200, passing through the suction hose 122, an extension pipe 124 and the extension connector 126 for trumpet.

As illustrated in figure 2 and 4, the suction force is transmitted to the suction input node 200, and then is transmitted respectively to the first and second suction holes 211 and 212 in the directions opposite to the directions of Q5 and Q6, as shown by the arrows.

Due to transferred to the suction power dust-Laden air drawn in the direction of Q1 in the middle part M of the suction input node 200, and the flow of dust-Laden air drawn in directions Q2 and Q3, shown by arrows, in the lateral parts S of the suction input node 200, involved respectively in the first and second suction holes 211 and 212.

In addition, as illustrated in figure 2 and 4, the suction force transmitted to the first and second suction holes 211 and 212, and then is transmitted respectively to the first and second lower holes 216 and 217 through the first and second channels 214 and 215 to dust.

Suction force transmitted to the first and second lower holes 216 and 217 is transmitted to the first and second upper openings 231 and 232 through a tight space formed by the connection of the top cover 230 to the lower housing 210. Due to the crystals suction outside air is drawn through the first and second upper openings 231 and 232 in the directions F1 and F2, the arrows shown.

In the process of passing through the sealed space formed by the connection of the upper cover 230 to the lower housing 210, and through the first and second lower holes 216 and 217, air drawn through the first and second upper openings 231 and 232, collides with the surface being cleaned and thereby disperses the dust that has accumulated in the first and second channels 214 and 215.

The air containing scattered dust, passes through the first and second channels 214 and 215 in the direction F3 and F4, shown by arrows, and flows into the holes 211 and 212.

As shown in figure 4, the dust-Laden air drawn into the holes 211 and 212 in the directions Q1, Q2, Q3, F3 and F4, is moved in the directions of Q5 and Q6, as shown by the arrows, to pass through the channel 221, which has a noise reduction node 300, which contains the first and second ribs 310 and 320 and the first and second elements 330 and 340.

At this stage, the dust-Laden air can flow into the first and second slanted holes 310a and 320S, performed in the first and second ribs 310 and 320, in directions Q8 and Q9 of the arrows shown, and accordingly, the dust-Laden air may be partially captured by holes 310a and 320S.

It is also possible dispersal impact and pressure arising from the collision of the dust-Laden air from the first and second ribs 310 and 320 through the first and second NAC is injecting holes 310a and 320S.

As a consequence, possible noise reduction found in traditional cleaners, which is caused by the convergence of flow of dust-Laden air in the outlet hole e for air and collision of the dust-Laden air against the rear wall 210d channel 221. The noise can be reduced even more due to the application of the first and second elements 216 and 217.

According to experimental data in case of a node 300, the total noise can be reduced by approximately 1.5 dB(A), that is, from 74.5 dB(a) to 73,0 dB(a).

As shown in figures 1 and 2, the flow of dusty air converge to the outlet e for air and moved to the body 110 of the vacuum cleaner through a connector 126, the extension pipe 124 and the suction hose 122. While this process is gathering dust and the release of the separated dust from the air outside.

Some of the benefits of the above-described suction input node 200 for a vacuum cleaner.

First, the suction force can be evenly transferred to the middle and side parts due to the presence of the first and second suction holes 211 and 212 located at a distance from each other, while improving the efficiency of suction.

Secondly, due to the fact that the node 300 may prevent the increase of the flow rate and the air turbulence created by the collision of the air flow occurs, the mind is nisene noise, that allows for a more quiet cleaning.

Thirdly, the presence of the node 300 can reduce the noise caused by the shock impact and pressure created in the process of direct collision of the dust-Laden air against the rear wall 210d channel 221 that allows for a more quiet cleaning.

While the present invention is shown and described with reference to certain embodiments of the specialists in this field of technology should be understood that various changes in form and details without deviating from the essence and scope of legal protection of the invention as defined in the attached claims.

1. Suction input node of a vacuum cleaner having a vacuum source, containing the lower body having first and second suction holes, the upper body is connected with the lower casing with the formation of the connecting channel to the first and second suction holes, and noise reduction site, installed along the connecting channel, which flow communicates with the vacuum source.

2. Suction input node of claim 1, wherein the upper housing includes a cover of the channel and the top cover attached to the lower housing above the cover of the channel.

3. Suction input node according to claim 2, in which noise reduction node contains the first noise reduction edge, with whom he slanted holes, and the second noise reduction edge having a second slanted holes.

4. Suction input node according to claim 3, in which the first and second noise reduction edge essentially symmetrical to each other.

5. Suction input node according to claim 3, in which the connecting channel in the middle part of its rear wall has an outlet opening for air, while the first noise reduction edge installed along the back wall of the connecting channel to the right of the outlet air, and the second noise reduction edge installed along the back wall of the connecting channel to the left of the outlet for the air.

6. Suction input node according to claim 5, in which the height of the first and second noise reduction of edges decreases, respectively, in the direction away from the outlet for air, these ribs are curved in the direction from the first and second suction holes.

7. Suction input node according to claim 3 in which each of the first and second inclined holes inclined at angles respectively θ1 and θ2 in the direction of release of the dust-Laden air through an outlet opening for air, and the corners θ1 and θ2 approximately 40 to 70°.

8. Suction input node according to claim 3, in which the width W1 and W2, respectively, each of the first and second inclined holes with the hat is approximately from 0.5 to 1.0 of the distances D1 to D2 between each of the first inclined holes and between each of the second inclined holes.

9. Suction input node according to claim 3, additionally containing the first and second noise absorbing elements along the connecting channel.

10. Suction input node according to claim 9, in which the sound-absorbing element is located between the first noise reduction edge and the connecting channel and the second sound-absorbing element is located between the second noise reduction edge and connecting channel.

11. Suction input node according to claim 9, in which the height N5 and N6, respectively, the first and second noise absorbing elements decreases in the direction away from the outlet for air, while the first and second noise absorbing elements are curved in the direction respectively of the first and second suction holes.

12. Suction input node according to claim 11, in which the first and second shock-absorbing elements at least partially made of a porous material.

13. A vacuum cleaner that contains a vacuum source and the suction input node, a flow is connected with the vacuum source and comprising upper and lower housings and noise reduction node, and the lower housing has first and second suction holes, and the upper casing is connected with the lower housing and at least partially constrains the connecting channel to the first and second suction holes, which in its middle part meetingone air hole for the passage of air to the vacuum source and along which noise reduction is a node.

14. The vacuum cleaner according to 14, in which noise reduction node contains the first noise reduction edge having a first inclined holes, and the second noise reduction edge having a second slanted holes.

15. The vacuum cleaner according to 14, in which the first and second noise reduction edge essentially symmetrical to each other and located on opposite sides of the outlet for the air.

16. The vacuum cleaner according to 14, in which the output air hole is located along the back wall of the connecting channel, and the first and second noise reduction ribs located on opposite sides of the hole.

17. The vacuum cleaner according to 14, in which the height of the first and second noise reduction of edges decreases, respectively, in the direction away from the outlet for air, these ribs are curved in the direction respectively of the first and second suction holes.

18. The vacuum cleaner according to 14, in which the connecting channel includes first and second shock-absorbing elements.

19. The vacuum cleaner on p, in which the sound-absorbing element is located between the first noise reduction edge and the connecting channel and the second sound-absorbing element is located between the second noise reduction edge and connecting channel.

20. The vacuum cleaner on p, in which the first and second shock-absorbing elements at least partially ispolneny of the porous material.



 

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Muffler // 2276736

FIELD: mechanical engineering; noise silencers.

SUBSTANCE: proposed muffler contain cylindrical housing rigidly connected with end face intake and exhaust branch pipes rigidly connected with central pipe provided with perforation. Exhaust branch pipe made in form of disk with at least through three holes in peripheral part, and perforated central part with perforations in form of rectangular slots of number not less than three is connected with central solid part of disk, and noise-absorbing member is placed between housing and central pipe so that holes of disk communicate with space of noise-absorbing member.

EFFECT: improved efficiency of noise damping.

1 dwg

FIELD: mechanical engineering; noise silencers.

SUBSTANCE: proposed multichamber muffler contains cylindrical housing rigidly connected with end face intake and exhaust branch pipes rigidly connected with central perforated partitions. Housing is made in form of cup with intake branch pipe in bottom. Central partitions are made in form of pack of disks. Holes in extreme disks are made in peripheral part and in disks in central part of pack, in center. Pack of disks is secured by means of at least two rods. One end of each rod is coupled with intake branch pipe, and the other, with exhaust branch pipe connected with opposite end face surface of housing. Ring coupled with rods in peripheral part are placed between disks in pack.

EFFECT: improved efficiency of noise damping.

1 dwg

FIELD: engine engineering.

SUBSTANCE: exhaust silencer comprises three chambers defined by transverse baffles, axially aligned inlet and outlet pipes connected with the central chamber, and inner perforated inlet and outlet branch pipes which pass through the side chambers and enter the central chamber. The central chamber is hollow, and two side chambers are filled with a sound-absorbing material. The transverse baffles are perforated, and the extent of perforation of the branch pipes and baffles separating the central and side chambers and the acoustical resistance are chosen so that the resistance to flow through at least one of the side chambers filled with the sound-absorbing material, with free end of the inlet (outlet) branch pipe being plugged from the side of the central chamber, is Δp = (1,3-2.4)fLQ/F, where Δp is the resistance to the flow through the plugged chamber, Pa, Q is the volume flow rate, m3, f is the frequency of adjusting, Hz, F is the cross-section area of the inlet branch pipe of the exhaust silencer, m2, and L is the length of the sections of the inlet (outlet) branch pipe arranged inside the exhaust silencer.

EFFECT: improved sound silencing.

2 cl, 3 dwg

FIELD: aircraft engineering.

SUBSTANCE: proposed noise suppressor contains resonance chambers limited by partitions, perforated plates in holes of which perforated conducting tubes are installed. Tubes of first plate are blanked from one end face. Blanks of each tube are provided with perforations for immediate passing of sound jet from tube and its dividing by blanked end face of tube of second plate. To prevent blow of directed jet against plate in contact with surrounding medium, lower end face of tube of second plate is blanked. Perforations of tubes provide dissipation of sound jet energy among spaces of resonance chambers.

EFFECT: increased noise suppression coefficient.

1 dwg

Muffler // 2069771
The invention relates to silencers, combined with a catalytic Converter, designed for neutralization of exhaust gases of internal combustion engines of any type, reducing the content of harmful gases

Suction head // 2292833

FIELD: constructional parts of vacuum cleaners used in industrial and domestic dust removing systems.

SUBSTANCE: suction head has casing with through-flow channels and suction branch pipe positioned within casing. Detachable partition positioned on lower end of casing has grooves formed on its lower surface and provided with through apertures. Head is equipped with supporting part mounted for axial movement on casing. Supporting part is made in the form of annular supporting member joined with spring-loaded sleeve positioned on casing. Supporting surface of annular member is below lower surface of partition. Suction head of such construction is designed for non-destructive vacuum cleaning of materials sensitive to friction and mechanical contacting, and also easily broken and easily bendable materials.

EFFECT: increased efficiency and high quality of vacuum dust removal by preventing contacting between easily damaged surface under cleaning process and head end, and by increasing stretching of material in cleaning and peripheral zones, and wider operational capabilities of suction head.

2 cl, 2 dwg

Dust removal head // 2287313

FIELD: mechanical engineering, in particular, vacuum-type dust removal equipment.

SUBSTANCE: dust removal head has casing whose upper base is connected with suction system and lower base is equipped with suction slot, means for moving of casing over surface to be cleaned, and diaphragm located in horizontal position within casing and having variable area in lengthwise direction. Diaphragm divides casing cavity into upper air collecting chamber and lower air receiving chamber which is made sectioned in transverse direction. Diaphragm is fixed on casing rear wall or casing front wall and may be made symmetric or asymmetric relative to casing axial line.

EFFECT: increased dust removal efficiency owing to enabling of equal suction rate over the entire head length.

9 cl, 15 dwg

FIELD: mechanical engineering, in particular suction brush used in vacuum cleaner.

SUBSTANCE: suction brush has cover, lower plate rotatingly connected with cover and equipped with suction aperture for drawing dust from surface to be cleaned by suction force created with the use of vacuum source provided within vacuum cleaner housing. There is lower plate retainer provided between cover and lower plate and adapted for selective attachment of lower plate to cover. Lower plate retainer comprises foot switch positioned for rotation in cover and equipped with actuating handle extending through cover aperture, and first locking part. Pivotal brush plate is positioned in cover for rotation under the action of foot switch. Brush plate has second locking part for locking and unlocking of brush plate in cooperation with first locking part. Flexible member is positioned between lower plate and brush plate of lower plate retainer so as to flexibly move end of lower plate in predetermined direction. According to one of versions of embodiment, suction brush has brush located on brush plate and protruding between cover and lower plate upon rotation of brush plate. Such construction allows suction brush to be adjusted depending on characteristics of surface to be cleaned, such as carpet or floor.

EFFECT: increased efficiency and exactness of cleaning owing to tight contacting of lower plate with surface under cleaning operation without scratching of said surface, and improved assembling of suction brush without employment of fastening means such as bolts.

8 cl, 12 dwg

FIELD: equipment for vacuum cleaners intended for both wet and dry cleaning of surfaces in rooms by spraying and sucking of water during movement over surface on area under cleaning process.

SUBSTANCE: cleaning head has suction head designed for sucking washing liquid and foreign matter during displacement over floor and mounted at end of extension tube connected to main casing of vacuum cleaner, sprayer disposed on upper surface of suction head and adapted for spraying of washing liquid toward front end of suction head, and closure for head designed for defining channel for sprayed liquid on upper surface of suction head, said channel being adapted for flowing thereon of washing liquid sprayed from said sprayer. Ribs are formed downstream at discharge side of channel for sprayed liquid, said channel being restricted with head closure. Ribs have penetration portions provided with gaps of predetermined size between adjacent downstream ribs, through which gaps washing liquid is flowing. According to another version, suction head has rib provided upstream and extending transverse to channel for sprayed liquid, said channel corresponding to gap between sprayer and downstream ribs. Said upstream rib is formed on lower surface of head closure and disposed so that its upper surface is tightly contacting with suction head in order to provide distribution of liquid sprayed by means of sprayer and feed it to downstream ribs. Sealing material is provided between upper part of upstream rib and upper surface of suction head in order to ensure sealing therebetween.

EFFECT: simplified wet cleaning procedure, provision for spraying of water and/or detergent over wider area and sucking contaminated water from floor surface during shorter period of time.

17 cl, 14 dwg

FIELD: domestic washing or cleaning.

SUBSTANCE: nozzle comprises top member set on the surface to be cleaned and movable platform that underlies the top member of the nozzle and surface to be cleaned and has top rollers rolling over the inner surface of the surface to be cleaned and bottom rollers rolling over the base. The movable platform can move behind the top member of the nozzle. The top member of the nozzle embraces the movable platform and has at least three pins whose ends abuts against the floor. The ends of the pins that embrace the movable platform have rollers, The top member of the nozzle has at least one source of alternative magnetic field, e.g. electromagnets, and the movable platform has vibration insulating members made of magnetic material, e.g. ferromagnetic material. The vibration insulating members can be made of the top rollers of the movable platform. The top members of the nozzle and movable platform are provided with the sources of permanent magnetic field. The top and bottom rollers of the movable platform are set in pair on the bent top and/or bottom ends of the vertical axles. The axles can freely rotate in the fastenings set on the platform, e.g. ball bearings. The top and bottom rollers of the movable platform can be made of a pair of balls.

EFFECT: enhance quality of cleaning.

10 cl, 4 dwg

FIELD: mechanical engineering.

SUBSTANCE: suction channel unit for vacuum cleaner is connected to vacuum cleaner casing through flow channel extension channel and is adapted for drawing air and dust from surface to be cleaned during operation of vacuum cleaner. Suction channel unit has suction head equipped with suction opening provided at its lower surface opposite surface to be cleaned. First connection member is extending from one side of suction head. Second connection member is rotationally connected at its one end with output end of first connection member and is designed for rotation around first axis for displacement upward and downward relative to suction head. Its other end is connected to flow channel extension. Third connection member is cooperating with second connection member through its one end which is rotating around second axis substantially perpendicular to first axis, and is connected with its other end to flow channel extension.

EFFECT: increased efficiency in cleaning of surface owing to improved pivot joint construction and simplified rotation of extension channel relative to suction head.

12 cl, 7 dwg

FIELD: vacuum cleaning apparatuses and their attachments.

SUBSTANCE: foldable suction brush of suction brush unit that is communicated with housing of vacuum cleaner through air duct for sucking dust and air from cleaned surface includes body of brush communicated with air duct and large number of movable frames. Each frame is provided with duct for suction of air and dust. Each frame is mounted in brush body with possibility of rotation relative to body of brush around rotation axis due to action of outer effort; at least one front frame covering large number of movable frames with possibility of closing open end of brush body.

EFFECT: improved design, possibility for cleaning large surface areas.

15 cl, 10 dwg

FIELD: mechanical engineering, in particular, vacuum cleaning equipment.

SUBSTANCE: foldable head has casing which is folded in the process of cleaning of wall angular zone for close contacting therewith. Foldable head casing has upper and lower parts equipped with plurality of flow-through channels provided in internal space between upper and lower parts. Auxiliary heads are pivotally attached to opposite sides of upper and lower parts of casing. Angular head is movable to and fro in coordination with rotation of auxiliary heads.

EFFECT: convenient use and simplified construction allowing zones of various width to be cleaned.

15 cl, 10 dwg

Dust removing tip // 2260366

FIELD: equipment used in vacuum cleaning apparatuses, may be employed in centralized dust removal systems.

SUBSTANCE: tip has trapezium-shaped case with opening provided in its smaller base and suction slit provided in its larger base and aligned with upper slit formed in sealing device. Sealing device is formed as pipe with lower slit extending along its side surface. Lower edge of said surface is arranged on vertical axis of symmetry of pipe cross-section plane. Upper edge of lower slit is arranged on inclined axis at an angle to vertical axis of symmetry of cross-section plane.

EFFECT: simplified construction and increased wear resistance of dust removing tip during operation with surfaces covered with dust containing abrasive particles.

2 dwg

FIELD: domestic washing or cleaning.

SUBSTANCE: combined suction nozzle comprises housing provided with through passages, suction branch pipe mounted in the housing, and detachable dust-air-proof baffle that overlaps the face suction opening in the housing. The nozzle is provided with at least one dust deflecting member which is mounted on the housing with a spaced relation with respect to the edges of the suction opening in the housing. The dust deflecting members are arranged on the outer face of the baffle for permitting movement in longitudinal direction and detachment.

EFFECT: enhanced quality of dust removing.

2 cl, 3 dwg

FIELD: household equipment, in particular, technique for vacuum cleaning of dusted surfaces.

SUBSTANCE: wireless vacuum cleaner has casing, dust and air pipe connected to casing, and platform equipped with supporting members and built-in branch pipe. Dust and air pipe is made in the form of extension piece mounted within branch pipe so that it may change its axial position and be disconnected, and flexible hose disposed between casing and extension piece. Supporting members are formed as self-adjusting rotary rollers.

EFFECT: wider operational capabilities of wireless vacuum cleaner and reduced intensity of labor consumed for cleaning of vast area surfaces and also heavily blocked up parts of surfaces with narrow passageways and labyrinth-like abrupt turns.

3 cl, 2 dwg

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