KR102432373B1 - Noise reduction assembly structure - Google Patents

Abstract

An object of the present invention is to provide a noise reducer assembly structure that can simplify each configuration of the noise reducer and reduce production costs,
an upper case and a lower case each including a pipe connection part through which the intake and exhaust ports are formed and a body part formed to have an inner diameter larger than that of the pipe connection part, each body part being assembled with each other to form a flow path therein; and a flow guide installed inside the upper case and the lower case to guide the flow direction of the air. and assembly ends for assembling the upper case and the lower case are respectively formed along the ends of the body part of the upper case and the lower case, and the assembling ends of the upper case and the lower case are formed in the same shape. characterized by being

Description

Noise reduction assembly structure {Noise reduction assembly structure}

The present invention relates to a noise reducer installed between ducts for ventilation to reduce the noise of air flowing in the duct, a noise reducer having a flow guide installed inside a case and easy assembly.

In the bathroom of the apartment house, a noise reducer is installed to prevent the sound of the toilet from flowing to other floors along the exhaust line of the fan and causing noise between floors. It is formed so that it can be installed between the conventional fan ducts.

A conventional noise reducer includes an upper case and a lower case, and the upper case and the lower case are assembled with each other to form a single flow path, and a sound absorbing material and a flow guide are installed therein. The upper case and lower case each have an intake and exhaust port formed through and are connected to the fan duct through a pipe connection part, and the central diameter of the upper case and lower case is formed larger than the diameter of the duct, so that the cross-sectional area of the flow path changes as it passes through the noise reducer. do. Therefore, when the sound passes through a space with a different cross-sectional area, the sound waves collide and cancel each other at the same time, so that the noise can be reduced.

In addition, the conventional flow guide, as formed in the noise reducer, is tapered in a form extending from the pipe connection side to the center side of the noise reducer. Furthermore, a radial grid is formed inside the flow guide to extend along the longitudinal direction of the flow path, and a sound absorbing material is interposed between the outside of the flow guide and the inner wall of the case to reduce noise.

The noise reducer is configured so that the upper case, the lower case, the flow guide and the sound absorbing material are assembled, and the specific shape and assembly structure are repeatedly improved so that productivity can be improved by easily producing and assembling each component.

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US 10-1348104 B

The present invention is to solve the problems of the prior art as described above, and specifically, it is an object of the present invention to provide a noise reducer assembly structure that can simplify each configuration of the noise reducer and reduce production costs.

An embodiment of the present invention provides the following noise reducer assembly structure in order to solve the above problems.

The present invention includes an upper case and a lower case each including a pipe connection part through which an intake and exhaust port is formed and a body part formed to have an inner diameter larger than that of the pipe connection part, each body part being assembled with each other to form a flow path inside; and a flow guide installed inside the upper case and the lower case to guide the flow direction of air. and assembly ends for assembling the upper case and the lower case are respectively formed along the ends of the body part of the upper case and the lower case, and the assembling ends of the upper case and the lower case are formed in the same shape. characterized by being

In addition, the assembling end includes an assembling protrusion protruding along the end of the body and an assembling groove that is recessed, wherein the assembling protrusion and the assembling groove are based on an imaginary point formed in the center of the end of the body. It is characterized in that it is formed at positions symmetrical to each other.

In addition, the assembling end includes a plurality of bolting holes that are formed penetrating along the circumference of the end of the body, the bolting holes are formed at positions symmetrical to each other based on an imaginary point formed in the center of the end of the body. characterized in that

In addition, the assembling end includes an assembly protrusion that is recessed in a position adjacent to the bolting hole and an assembly groove that is recessed to guide the position of the bolting hole. It is characterized in that it is formed at a position symmetrical to each other based on the formed virtual point.

In addition, the body part includes a bracket fastening part capable of inserting a bracket for installation at an end thereof, and the bracket fastening part includes a panel-shaped separation preventing part and a bracket support part extending in parallel along the circumference of the body part, so that the separation preventing part And a bracket receiving groove is formed between the bracket support parts, the separation preventing part is disposed on the outside of the bracket support part, the assembling end is formed to extend along the end of the bracket support part, and the bracket fastening part is at the end of the body part. The bracket support portion includes an assembly protrusion protruding along the end portion and an assembly groove formed in a depression, wherein the bracket support portion is formed at a position symmetrical to each other based on an imaginary point formed in the center. It is characterized in that it is formed at a position symmetrical to each other based on an imaginary point formed in the center of the end of the body portion.

In addition, the flow guide is characterized in that it includes a center portion extending in the direction of the flow path, and a plurality of guide portions projecting radially from the outer periphery of the center portion and extending in the longitudinal direction of the center portion.

In addition, assembling jaws are protruded from both ends of the guide part, and the assembly jaws are assembled to be inserted into the pipe connection part from the body part.

In addition, one end of the pipe connection part is formed to extend by a length set inside the body part, and a plurality of flow guide fixing ribs for fixing the guide part of the flow guide to one end of the pipe connection part are formed to protrude in the longitudinal direction of the pipe connection part. and the flow guide fixing ribs are formed at positions symmetrical to each other based on an imaginary point formed in the center of one end of the pipe connection part.

In addition, the flow guide, a first assembly is assembled from one side and a second assembly is assembled from the other side, and the first assembly includes a first center part extending in the direction of the flow path, and from the outer periphery of the first center part A plurality of first guide parts protruding in a radial direction and extending outwardly from the other end of the first center part in a longitudinal direction, wherein the second assembly includes a second center part extending in the direction of the flow path; a plurality of second guide parts protruding from the outer periphery of the second center part in a radial direction and extending outwardly from one end of the second center part in a longitudinal direction, wherein the first assembly and the second assembly include the first center part and the second center part is arranged in a row along the flow path direction, and the first guide part and the second guide part are assembled to be alternately positioned.

In addition, a plurality of sound-absorbing material fixing ribs for fixing the sound-absorbing material are protruded in the longitudinal direction of the body portion on the inner wall of the body portion, and the sound-absorbing material fixing ribs are formed at positions symmetrical to each other with respect to the center of the body portion. do.

According to the problem solving means of the present invention as described above, various effects including the following items can be expected. However, the present invention is not established only when exhibiting all of the following effects.

According to the present invention, the assembly ends of the upper case and the lower case are formed identically, and the assembly protrusions, assembly grooves, bolting holes, etc. formed at the assembly ends are formed in a shape symmetrical to each other based on the center of the body part, so that the upper case and The lower case may be manufactured in the same shape. Therefore, since both the upper case and the lower case can be produced with one mold, the cost required for production can be reduced.

In addition, the flow guide can be easily installed by forming a chin in the guide part of the flow guide and simply inserting the chin from the inside of the body of the case to the pipe connection part.

1 is a perspective view of a noise reducer of the present invention;
Figure 2 is an exploded perspective view of Figure 1;
3 is a perspective view showing only the upper case in FIG. 2;
4 is an enlarged perspective view showing part IV in FIG. 3;
Figure 5 is a front view of Figure 3;
Figure 6 is a perspective view of the flow guide in Figure 2,
7 is an exploded perspective view of FIG. 6;
8 is a plan view and a front view of FIG. 6 ;
9 is a perspective view showing a part of the second assembly cut away so that the assembly surface is shown in FIG. 7 .

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

1 is a perspective view of a noise reducer of the present invention, FIG. 2 is an exploded perspective view of FIG. 1, FIG. 3 is a perspective view showing only the upper case in FIG. 2, FIG. 4 is an enlarged perspective view showing part IV in FIG. 3, FIG. 5 is It is a front view of FIG.

As shown in these drawings, the assembly structure of the noise reducer 10 according to an embodiment of the present invention includes an upper case 20 and a lower case 30 connected to the ventilation duct, the upper case 20 and the lower The inner space formed by the case 30 is used as a flow path, and a flow guide 40 and a sound absorbing material (not shown) for guiding air flow on the flow path may be installed.

In the noise reducer 10, air can flow from one side to the other side by the intake and exhaust ports 22 and 32 formed in the upper case 20 and the lower case 30, and it is also possible to flow from the other side to the one side, and the noise is the same. to be. The upper case 20 and the lower case 30 are to be formed including the pipe connection parts 23 and 33 connected to the duct, and the body parts 24 and 34 having an inner diameter larger than that of the pipe connection parts 23 and 33. can The upper case 20 and the lower case 30 may be coupled to each other assembling ends formed at the ends of the bodies 24 and 34 . Furthermore, the upper and lower portions of the noise reducer 10 including the upper case 20 and the lower case 30 may be formed symmetrically, and in particular, the upper case 20 and the lower case 30 are injected with the same mold. can be formed.

To this end, an assembly end is formed along the periphery of the end of the body (24, 34) of each case, and each component of the assembly is at a position symmetrical about an imaginary point formed at the end of the case body (24, 34). can be formed.

First, the assembly end may include an assembly protrusion 26a which is protruded and an assembly groove 26b which is recessed. Also, the assembly end may include a plurality of bolting holes 21 and 31 that are formed through the body 24 and 34 in the longitudinal direction, and are formed adjacent to the bolting holes 21 and 31 to form the bolting holes 21, 31) may include an assembly protrusion 27a that protrudes and an assembly groove 27b that is recessed in order to guide the position. At this time, the assembly protrusions 26a, 27a and the assembly grooves 26b, 27b are each formed in a complementary shape, and may be formed at a position symmetrical with respect to an imaginary point formed at the end of the body 24, 34. have.

In addition, a plurality of bracket fastening parts 25 and 35 that can be fixed by inserting a bracket for installing the noise reducer 10 may be formed in the body 24 and 34 . The bracket fastening portions 25 and 35 are arranged such that the panel-shaped separation preventing portion 25a and the bracket supporting portion 25c are formed to extend in parallel along the circumference of the body 24 and 34, and the separation preventing portion 25a and A bracket receiving groove 25b into which the bracket can be inserted may be formed in a space spaced apart between the bracket support portions 25c. In addition, the separation prevention portion 25a is formed on the outside of the bracket support portion 25c, the separation prevention portion 25a may be formed with a slot into which the bracket can be inserted.

Due to the structure of the bracket fastening parts 25 and 35, the assembly end may be formed along the circumference formed by the ends of the body 24 and 34 and the bracket support part 25c, and the bracket fastening parts 25 and 35 also the body. (24, 34) may be formed at positions symmetrical to each other based on an imaginary point formed in the center of the end portion. Furthermore, the bracket support portion 25c may include an assembly protrusion 28a protruding along the end portion and an assembly groove 28b formed recessed, and the assembling protrusion 28a and the assembly groove 28b are likewise the bodies 24 and 34. ) may be formed at positions symmetrical to each other based on an imaginary point formed in the center of the end portion.

The structure of the bracket fastening portions 25 and 35, the bolting holes 21 and 31, the assembly protrusions 26a, 27a, 28a and the assembly grooves 26b, 27b, 28b formed at the symmetrical positions in this way is the upper case 20 and It is a configuration for producing and assembling the lower case 30 as a single mold, and placing the ends of the bodies 24 and 34 of the upper case 20 and the lower case 30 in a position facing each other, The upper case 20 and the lower case 30 can be assembled by rotating one of them by 180° and fitting them together.

In addition, the sound-absorbing material fixing ribs 35 and the flow guide fixing ribs 36 may be formed inside the body (24, 34) portion. The sound-absorbing material fixing rib 35 is a configuration for closely fixing the sound-absorbing material to the inner wall surface of the body (24, 34), and is spaced apart by a space in which the sound-absorbing material can be inserted along the longitudinal direction of the body (24, 34). do. Since the body (24, 34) portion is formed in a shape extending from the pipe connection portions (23, 33), the sound-absorbing material fixing rib (35) is formed to protrude from the expanded portion to form a sound-absorbing material insertion space.

Further, the pipe connection parts 23 and 33 may be formed to extend from the outside of the body 24, 34 to the inside of the body 24, 34, and the pipe connection parts 23 and 33 formed inside the body 24, 34 part. A flow guide fixing rib 36 may be formed at the end. The flow guide fixing rib 36 forms a groove so that the guide part of the flow guide 40 to be described below is inserted and fixed without being rotated, and two protrusions are formed to protrude as shown in the figure, and the It is also possible to form a groove between the two projections. Since the flow guide 40 may also be formed in a symmetrical shape with respect to the center, the flow guide fixing rib 36 is also preferably formed at a position symmetrical about the center of the end center of the pipe connection parts 23 and 33 .

Figure 6 is a perspective view of the flow guide in Figure 2, Figure 7 is an exploded perspective view of Figure 6, Figure 8 is a plan view and a front view of Figure 6, Figure 9 is a part of the second assembly so that the assembly surface is shown in Figure 7 by cutting It is a perspective view shown.

As shown in these drawings, an embodiment of the present invention is an assembly structure of a flow guide 40 installed in a noise reducer 10 in which a flow path is formed so that air flows from one side to the other, and the flow guide 40 ) serves to radiate air and noise toward the inner wall of the noise reducer 10 without obstructing the air flow in the noise reducer 10 .

The flow guide 40 may be divided in a direction perpendicular to the longitudinal direction as shown in FIG. 7 . The flow guide 40 includes a first assembly 410 assembled from one side and a second assembly 420 assembled from the other side, and the first assembly 410 and the second assembly 420 are as described below. It may be assembled to be directly connected, or may be connected through another member therebetween.

The reason why the flow guide 40 is divided and assembled into a plurality is to form the flow guide 40 in a shape that can be injected in the longitudinal direction. At this time, the first assembly 410 and the second assembly 420 are injection molded into the same shape, and by assembling using the structure of the assembly surface 430 formed in the central portion, one flow guide 40 can be formed. .

When the flow guide 40 is viewed as one part, as shown in FIG. 8, the flow guide 40 includes a center portion extending in one direction, and a guide portion protruding from the outer surface of the center portion and extending along the center portion. do.

More specifically, the first assembly 410 and the first assembly 410 include a tubular first center portion 411 and a second center portion 421 extending in the flow direction, respectively, and from the outer periphery of each center portion. It includes a first guide part 412 and a second guide part 422 protruding in the radial direction (or radial direction) and extending in the longitudinal direction. In this case, the first guide part 412 and the second guide part 422 may protrude beyond the lengths of the first center part 411 and the second center part 421 , respectively. Further, at the ends of the first guide part 412 and the second guide part 422 , a first mounting jaw and a second mounting jaw are formed so as to be fixed to the pipe connection parts 23 and 33 of the noise reducer 10 . can be

Therefore, when a flow path is formed so that air can flow from one end of the noise reducer 10 to the other end, one end of the second center portion 421 is coupled to the other end of the first center portion 411 in a row, and the first The guide part 412 and the second guide part 422 are formed to extend in a plurality of directions toward the second assembly 420 and the first assembly 410, respectively. Therefore, the first guide part 412 and the second guide part 422 may be inserted into each other at alternate positions and assembled to be alternately positioned.

The reason why the flow guide 40 of the present invention is formed in this way is that, as shown in FIGS. 6 to 8 , the first guide part 412 and the second guide part 422 are each formed by the first center part 411 . And it is formed to protrude from the second center portion 421, and is formed in a twisted shape as a whole so as to be rotated and extended in the radial direction. More specifically, in Fig. 8 (b), the first assembly 410 is shown by a solid line and the second assembly 420 is shown by a dotted line. In the assembled state, the first guide part 412 is formed to extend from one end 412a to the other end 412b, and the other end 412b of the first guide part 412 is adjacent to one end of the second guide part 422 . A curved surface 412c is formed between one end 412a and the other end 412b so as to be formed at a position rotated by the angle at which the 422a is positioned. Similarly, the other end of the second guide part 422 is also formed at a position rotated by an angle at which one end of the adjacent first guide part 412 is positioned. Therefore, as a result, when looking at the flow guide 40 in the longitudinal direction of the flow path as shown in FIG. 10) can be passed while being guided in the radial direction toward the inner wall.

In general, a member formed like a blade in this way may be injected by a single mold. However, in the case of the flow guide 40 of the present invention, there is no space for the mold to sit between each guide part, so there is a problem that injection is impossible. In order to solve this problem, the flow guide 40 is divided into a first assembly 410 and a second assembly 420, and the mold can be arranged using the space formed between each guide part as shown in FIG. 7, The present invention has the advantage that mass production is possible by the injection process.

In addition, an assembly surface 430 may be formed at the other end of the first assembly 410 and one end of the second assembly 420 . The assembly surface 430 has a shape corresponding to the assembly projection 431 protruding in the longitudinal direction of the first center portion 411 and the second center portion 421 , and the assembly projection 431 , and the first center portion 411 . ) and the assembly groove 432 recessed in the longitudinal direction of the second center portion 421 may be included. Furthermore, the connection part 433 connecting between the assembly protrusion 431 and the assembly groove 432 may be formed in the shape of a jaw, as shown in the drawing.

In addition, the assembly surface 430 may be formed in a point symmetrical shape centered on the center portion. In other words, the first center portion 411 and the second center portion 421 may be formed symmetrically with respect to an imaginary point formed in the center of the end portion. Therefore, as shown in the drawing, the assembly protrusion 431 and the assembly groove 432 are symmetrically formed based on the virtual point, and each connection part 433 connecting the assembly projection 431 and the assembly groove 432 is similarly described above. It may be formed symmetrically with respect to a virtual point. This structure is to enable assembly by producing the first assembly 410 and the second assembly 420 in the same shape with a single mold. Accordingly, by disposing the first assembly 410 or the second assembly 420 to face each other in the assembly direction, and rotating 180° with respect to the axis in the extension direction of the center part, the assembly surfaces 430 may be assembled while being in contact with each other.

As described above, in the present invention, the first assembly 410 and the second assembly 420 of the upper case 20, the lower case 30, and the flow guide 40 can be produced by a single mold, respectively. , it can significantly reduce the cost required for production. In addition, since the flow guide 40 is mounted simply by assembling the jaws formed on the flow guide 40 to the pipe connection parts 23 and 33, assembly is very easy.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains can make various modifications and variations without departing from the essential characteristics of the present invention. The scope of protection should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

10 Noise Reduction
20 Upper case 30 Lower case
21, 31 Bolting hole 22, 32 Intake and exhaust port
23, 33 Pipe connection part 24, 34 Body part
25, 35 Bracket fastening part 25a Separation prevention part
25b Bracket storage groove 25c Bracket support part
26a, 27a, 28a Assembly projections 26b, 27b, 28b Assembly grooves
35 Sound-absorbing material fixed rib 36 Fluid guide fixed rib
40 Flow guide 410 First assembly
411 1st center part 412 1st guide part
420 second assembly 421 second center part
422 Second guide part 430 Assembly surface
431 Assembly Protrusion 432 Assembly Groove
433 connection

Claims (11)

an upper case and a lower case each including a pipe connection part through which the intake and exhaust ports are formed and a body part formed to have an inner diameter larger than that of the pipe connection part, each body part being assembled with each other to form a flow path therein;
a flow guide installed inside the upper case and the lower case to guide the flow direction of air; and
a sound-absorbing material fixing rib formed inside the body part;
including,
The pipe connection part is formed to extend to the inside of the body part,
The flow guide is
a center portion extending in the direction of the flow path, and a plurality of guide portions protruding from an outer periphery of the center portion in a radial direction and extending in a longitudinal direction of the center portion;
The guide part is rotated and extended in the radial direction from the center part and is formed in a twisted shape as a whole, and guides the air introduced through the pipe connection part to flow toward the inner surface of the body part,
At both ends of the guide part, assembling jaws are formed to protrude, and the assembly jaws are assembled to be inserted into the pipe connection part from the body part,
Assembling ends capable of assembling the upper case and the lower case are respectively formed along the ends of the body portion of the upper case and the lower case,
The assembling end of the upper case and the lower case is a noise reducer assembly structure, characterized in that formed in the same shape.
According to claim 1,
The assembling end includes an assembly protrusion protruding along the periphery of the end of the body portion and an assembly groove formed in a depression,
The assembling protrusion and the assembling groove are formed at positions symmetrical to each other based on an imaginary point formed in the center of the end of the body part.
According to claim 1,
The assembling end includes a plurality of bolting holes that are formed through the end of the body portion,
The bolting hole is a noise reducer assembly structure, characterized in that formed at positions symmetrical to each other based on an imaginary point formed in the center of the end of the body portion.
4. The method of claim 3,
The assembling end includes an assembly protrusion that is recessed at a position adjacent to the bolting hole and an assembly groove that is recessed to guide the position of the bolting hole,
The assembling protrusion and the assembling groove are formed at positions symmetrical to each other based on an imaginary point formed in the center of the end of the body part.
According to claim 1,
The body portion includes a bracket fastening portion capable of inserting a bracket for installation at the end,
The bracket fastening portion includes a panel-shaped separation preventing portion and a bracket supporting portion extending side by side along the circumference of the body to form a bracket receiving groove between the separation preventing portion and the bracket supporting portion, and the separation preventing portion is the bracket supporting portion placed outside,
The assembly end is formed extending along the end of the bracket support,
The bracket fastening portion is a noise reduction assembly structure, characterized in that formed at positions symmetrical to each other based on an imaginary point formed in the center of the end of the body portion.
6. The method of claim 5,
The bracket support portion includes an assembly protrusion formed to protrude along an end portion and an assembly groove formed to be depressed,
The assembling protrusion and the assembling groove are formed at positions symmetrical to each other based on an imaginary point formed in the center of the end of the body part.
delete delete 7. The method according to any one of claims 1 to 6,
A plurality of flow guide fixing ribs for fixing the guide part of the flow guide to one end of the pipe connection part are formed to protrude in the longitudinal direction of the pipe connection part,
The flow guide fixing rib is a noise reducer assembly structure, characterized in that formed at positions symmetrical to each other based on an imaginary point formed in the center of one end of the pipe connection part.
7. The method according to any one of claims 1 to 6,
The flow guide is assembled with a first assembly on one side and a second assembly on the other side,
The first assembly includes a first center portion extending in the direction of the flow path, and a plurality of first center portions protruding from the outer periphery of the first center portion in a radial direction and extending outwardly from the other end of the first center portion in a longitudinal direction. Includes 1 guide part,
The second assembly includes a second center portion extending in the direction of the flow path, and a plurality of second center portions protruding from the outer periphery of the second center portion in a radial direction and extending outwardly at one end of the second center portion in the longitudinal direction. Includes 2 guides,
The first assembly and the second assembly are assembled such that the first center part and the second center part are arranged in a row along the flow path direction, and the first guide part and the second guide part are alternately positioned. Flow guide assembly structure of the reducer.
7. The method according to any one of claims 1 to 6,
The sound absorbing material fixing ribs are noise reduction assembly structure, characterized in that formed at positions symmetrical to each other with respect to the center of the body portion.

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