CN108731242B

CN108731242B - Coat structure and implementation method thereof

Info

Publication number: CN108731242B
Application number: CN201810769444.XA
Authority: CN
Inventors: 杨一博
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-07-13
Filing date: 2018-07-13
Publication date: 2023-09-01
Anticipated expiration: 2038-07-13
Also published as: CN108731242A

Abstract

The outer sleeve structure comprises an inner side wall and an outer side wall, wherein an inner member is arranged on the inner side of the outer sleeve structure, and a plurality of protrusions which are propped inwards against the outer side of the inner member are formed on the inner side wall; the protrusions are arranged at intervals, so that discontinuous gaps are formed between the inner side wall and the outer side of the inner member; and a sound insulation material is filled between the inner side wall and the outer side wall. The outer sleeve structure can effectively eliminate medium-high frequency noise and low frequency noise by utilizing discontinuous gaps formed between the protrusions and the outer sides of the inner members and the sound insulation material, and the effects of small installation resistance and low installation difficulty of the outer sleeve structure can be achieved by adjusting the filling state of the sound insulation material in the protrusions.

Description

Coat structure and implementation method thereof

Technical Field

The invention relates to a jacket structure for eliminating noise of a ventilation pipeline and an implementation method thereof.

Background

Ventilation devices are widely used in various fields such as heating, ventilation and cooling for industrial, construction; air exchange of refrigerators, air conditioners and the like in living houses, cooling of electronic equipment and the like. In the above-mentioned scenario, on the one hand, air can generate medium-high frequency noise when passing through the existing flow path under the drive of the fan, and on the other hand, ventilation ducts or other mechanical parts can also generate low frequency noise due to vibration or friction. If the ventilation equipment is in a relatively closed and open environment, the noise of the ventilation equipment can be obviously amplified, and strong and continuous environmental noise is formed; when the ventilation equipment is installed near the living area, the quality of the city environment is adversely affected. Therefore, how to effectively reduce noise and simultaneously consider the effects of both medium-high frequency noise and low frequency noise is a problem that needs to be solved at present.

In the prior art, on one hand, high-frequency noise mainly propagates by air, so that a hollow structure, a through hole structure and the like are generally adopted to inhibit medium-high frequency noise; in order to eliminate the low and medium frequency noise, one or more sound insulation layers made of sound insulation materials are generally used in the prior art. Therefore, in order to block high-frequency noise and low-frequency noise simultaneously, the two modes are usually combined in the prior art, for example, a noise blocking and eliminating jacket structure is arranged on the outer wall of the ventilating duct. However, the noise elimination modes are both 'treating the symptoms but not the root cause', and the source for analyzing noise generation mainly comes from vibration of a ventilating duct or other mechanical parts, so that the problem of how to adopt a simple and effective mode to ensure that the damping measures of the ventilating duct or other mechanical parts are taken into consideration while adopting high-low frequency noise elimination measures is currently faced.

On the other hand, the construction method of the existing noise elimination jacket structure mainly comprises the following steps: (1) The inner diameter of the outer sleeve is required to be reduced to increase the close contact between the outer sleeve and the outer wall of the ventilating duct so as to achieve the damping effect, but the resistance of the ventilating duct is greatly increased when the ventilating duct is nested in the outer sleeve, and the construction difficulty is also greatly increased; (2) The splice connection, it needs extra connecting piece to be used for connecting separable overcoat structure, but the connecting piece is because long-term atress, and its reliability probably can be influenced and lead to overcoat structure damage, in addition in order to reach the effect of supporting the bradyseism its overcoat internal diameter also reduces, and consequently the resistance is also great when the connecting piece lock.

Patent TWM506940U (document 1) discloses a scheme for improving the air duct structure, which is characterized in that a plurality of heat insulation layers with different densities are added into an inner heat-proof pipe and an outer heat-proof pipe to achieve the effects of noise absorption and heat preservation, and meanwhile, the heat insulation materials can also achieve the effect of supporting and cushioning. However, the above-described scheme of document 1 still has a number of problems: firstly, the device of the document 1 is not provided with a hollow structure, so that middle-high frequency noise cannot be isolated; secondly, the construction mode adopts the traditional nesting method to cause larger construction resistance and higher difficulty.

Patent JP2017057745a (document 2) discloses an exhaust pipe cover structure that suppresses noise generated by vibration by covering a pair of semicircular covers on the outside of an annular exhaust pipe and forming a gap. However, the above-described scheme of document 2 still has a number of problems: firstly, in the document 2, noise of middle and low frequencies cannot be effectively suppressed without adopting a sound insulation material; secondly, the cover body of the document 2 is made of hard materials, and the supporting and damping effects are poor; thirdly, the cover body of the document 2 is connected by splicing, and the resistance is large when the cover body is connected by adopting a hard material connecting piece, and the connecting piece of the cover body possibly has poor reliability due to long-term stress. Document 2 fails to address both medium-high frequency noise and low frequency noise, and fails to solve the problems associated with the prior art jacket structure embodiments.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides:

the utility model provides a overcoat structure, includes inside wall and lateral wall, the inboard of overcoat structure is provided with an inner member, its characterized in that: a plurality of protrusions which are propped inwards against the outer side of the inner member are formed on the inner side wall; the protrusions are arranged at intervals, so that discontinuous gaps are formed between the inner side wall and the outer side of the inner member; and a sound insulation material is filled between the inner side wall and the outer side wall.

Further, the inner side wall is made of flexible, elastic or rigid materials, the outer side wall is made of flexible, elastic or rigid materials, and the protrusion is made of flexible, elastic or rigid materials.

Further, the protrusion has an outer surface protruding to an inner side, and an inner space formed in the outer surface, the outer surface being connected to the inner sidewall; and, the inner space may be completely filled or not completely filled with the soundproof material.

Further, the outer surface is integrally formed with the inner sidewall.

Further, the sound insulation material filled in the inner space is communicated with the sound insulation material filled between the inner side wall and the outer side wall.

Further, a first through hole is formed in the inner side wall or the outer side wall, and the sound insulation material can be further injected between the inner side wall and the outer side wall through the first through hole, so that the inner space of the protrusion is changed from being not fully filled with the sound insulation material to being fully filled with the sound insulation material.

Further, a second through hole is formed in the inner side wall or the outer side wall, and an air bag with an opening connected with the second through hole is further arranged between the inner side wall and the outer side wall; and gas can be injected into the air bag through the second through hole, so that the inner space of the bulge is changed from the state of not being fully filled with the sound insulation material to the state of being fully filled with the sound insulation material through the expansion of the air bag.

Further, the sound insulation material is a medium-low frequency noise elimination organic material.

Further, the internal component is a ventilating duct, a fan part outer sleeve or a silencer sleeve.

The invention also provides an implementation method, according to the jacket structure, wherein the raised material is flexible or elastic material; the method comprises the following steps:

(1) Implementing a mounting arrangement of the jacket structure outside the inner member when the protrusions are not completely filled with the sound insulating material;

(2) After the mounting arrangement, the protrusion is changed from not fully filled with the sound insulating material to fully filled with the sound insulating material.

The invention has the advantages that:

(1) The invention has simple structure and strong practicability, utilizes the discontinuous hollow structure formed between the bulges which are mutually spaced on the inner side wall and the outer side of the inner member to effectively block and eliminate the middle-high frequency noise, and utilizes the sound insulation material filled between the inner side wall and the outer side wall to effectively block and eliminate the middle-low frequency noise.

(2) The outer sleeve structure realizes the effective supporting and damping effects on the noise source without adding additional structures while realizing the high-medium-low frequency noise elimination.

(3) According to the invention, through the mode that the sound insulation material is not filled before filling, the mounting resistance and the mounting difficulty are low when the jacket structure is nested or spliced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a longitudinal cross-sectional perspective view of a jacket structure of the present invention;

FIG. 2 is a side view of the invention showing the raised inner insulation material on the inner side wall of the jacket structure not fully filled;

FIG. 3 is a side view of the invention showing the complete filling of the raised inner acoustic barrier material on the inside wall of the jacket structure;

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1, which is a longitudinal sectional perspective view of the jacket structure of the present invention, the jacket structure includes an inner side wall 7 and an outer side wall 8, and a gap between the inner side wall 7 and the outer side wall 8 is filled with a sound insulation material 3. The inner side wall 7 is provided with a plurality of bulges 4, and the bulges 4 are distributed at intervals.

Referring to fig. 2-3, which are side views of the sound insulation material in the boss 4 of the jacket structure of the present invention in an incompletely filled state and in a completely filled state, respectively, an inner member 1 is disposed on the inner side of the jacket structure, and the inner member 1 may be a ventilation duct, a fan part outer sleeve or a muffler sleeve. Firstly, the jacket structure of the invention can be sleeved outside the whole ventilation pipeline; secondly, the jacket structure of the invention can be sleeved outside part of the ventilating duct at the position of the fan, because the fan is an important noise source in the ventilating system, and the jacket structure is arranged near the position of the main noise source, the use length and the cost can be saved; thirdly, the jacket structure of the invention can also be sleeved outside the existing silencer sleeve, thus not only saving the cost, but also realizing the enhancement of noise elimination effect.

Taking the ventilation duct as an internal component, optionally, a fan 2 may be provided therein, the fan 2 being secured within the internal component 1 by support means (not shown). The bulges 4 are propped inwards against the outer side of the inner member 1, and as the bulges 4 are distributed at intervals, discontinuous gaps 5 are formed between the inner side wall 7 and the outer side of the inner member 1, and the gaps 5 form a hollow structure capable of eliminating middle-high frequency noise; the sound insulation material 3 filled between the inner side wall 7 and the outer side wall 8 is set to be a medium-low frequency noise-eliminating organic material, and the medium-low frequency noise-eliminating organic material is preferably PVB resin. Therefore, the jacket structure can simultaneously block and eliminate medium-high frequency noise and low frequency noise.

Further, the material of the inner side wall 7 is a flexible, elastic or rigid material, the material of the outer side wall 8 is a flexible, elastic or rigid material, and the material of the protrusion 4 is a flexible, elastic or rigid material. Preferably, the material of the protrusions 4 is a flexible or elastic material.

It should be further noted that, when the material of the protrusion 4 is a flexible or elastic material, the installation of the jacket structure may be performed by controlling whether the sound insulation material inside the protrusion 4 is filled or not. When the material of the protrusions 4 is a rigid material, the mounting of the jacket structure can be performed by controlling the filling or not of the sound insulation material between the inner side wall 7 and the outer side wall 8. In the present invention, the material of the protrusions 4 is preferably a flexible or elastic material.

Specifically, the projection 4 has an outer surface protruding to the inner side, which is connected to the inner side wall 7, and an inner space formed in the outer surface, and preferably, the outer surface of the projection 4 is integrally connected to the inner side wall 7; and, the inner space may be completely filled or not completely filled with the soundproof material, and the soundproof material filled in the inner space communicates with the soundproof material 3 filled between the inner side wall and the outer side wall.

Referring to fig. 2-3, a first through hole is provided in the inner or outer sidewall, preferably a first through hole 6 is provided in the outer sidewall, through which first through hole 6 the sound insulation material 3 can be further injected between the inner sidewall 7 and the outer sidewall 8, so that the inner space of the protrusion is changed from being not fully filled with the sound insulation material to being fully filled with the sound insulation material.

In addition, a second through hole (not shown) may be further provided on the inner sidewall 7 or the outer sidewall 8, and an air bag (not shown) having an opening connected to the second through hole is further provided between the inner sidewall 7 and the outer sidewall 8; the second through hole can be used for injecting gas into the air bag, and then the expansion of the air bag can change the internal space of the bulge 4 from the state of not being fully filled with the sound insulation material to the state of being fully filled with the sound insulation material. Thereby, the change of the supporting force of the protrusion 4 against the inner side wall 7 can be realized by using the state change of the complete filling and the incomplete filling of the sound insulation material 3 in the protrusion 4.

It should be noted that, the present invention may employ a single-stage protrusion state adjusting mechanism, that is, only the first through hole is provided to adjust the state of filling the sound insulation material 3 in the protrusion 4. It is also possible to use a mechanism with two-stage adjustment of the state of the protrusions, i.e. at least with said first through holes, second through holes and air-bags, to adjust the state of filling of the sound-insulating material 3 in the protrusions 4.

In addition, the invention also provides an implementation method of the jacket structure, wherein the material of the bulge 4 is flexible or elastic material, and the implementation method comprises the following steps:

(1) The mounting arrangement of the jacket structure outside the inner member is performed when the projections 4 are not completely filled with the sound insulation material 3: if the sound insulation material is installed in a nested mode, as the bulges 4 are not fully filled with the sound insulation material, a certain gap is reserved between the outer surface of each bulge 4 and the inner side wall 7, so that the installation resistance of the jacket structure is small and the installation difficulty is low; if the connecting piece is used for installation, the bulge 4 is not fully filled with the sound insulation material, so that the resistance of the connecting piece during connection is small, and the connecting piece is easy to clamp.

(2) After the mounting arrangement, the sound-insulating material 3 is injected through the first through hole 6 or/and the air bag is injected through the second through hole, so that the inner space of the protrusion 4 is changed from being incompletely filled with the sound-insulating material to being completely filled with the sound-insulating material. At the moment, the bulges 4 are completely bulged, form larger gaps with the inner side wall 7, and then block and eliminate organic materials through medium-low frequency noise, so that the effects of simultaneously blocking and eliminating medium-high frequency noise and low frequency noise can be achieved; meanwhile, the complete protrusion of the protrusion 4 also plays a good role in supporting and cushioning the inner member 1.

Furthermore, while several embodiments and preferred embodiments of the present general inventive concept have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.

Claims

1. The utility model provides a overcoat structure, includes inside wall and lateral wall, the inboard of overcoat structure is provided with an inner member, its characterized in that: the internal component is a ventilation pipeline, a fan is arranged in the ventilation pipeline, and the fan is fixed in the internal component through a supporting device; a plurality of protrusions which are propped inwards against the outer side of the inner member are formed on the inner side wall; the bulges are arranged at intervals, so that discontinuous gaps are formed between the inner side wall and the outer side of the inner member, and the gaps form a hollow structure capable of eliminating middle-high frequency noise; and a sound insulation material is filled between the inner side wall and the outer side wall, and the sound insulation material is a medium-low frequency noise-blocking and eliminating organic material.

2. The jacket structure of claim 1, wherein the material of the inner side wall is a flexible, elastic or rigid material, the material of the outer side wall is a flexible, elastic or rigid material, and the material of the protrusions is a flexible, elastic or rigid material.

3. The jacket structure of claim 2, wherein the protrusions have an outer surface protruding inward and an inner space formed within the outer surface, the outer surface being connected to the inner sidewall; and, the inner space may be completely filled or not completely filled with the soundproof material.

4. A jacket structure as claimed in claim 3, wherein said outer surface is integrally formed with said inner sidewall.

5. A jacket structure as claimed in claim 3, wherein the sound insulation material filled in the interior space communicates with the sound insulation material filled between the inner side wall and the outer side wall.

6. The jacket structure according to claim 5, wherein a first through hole is provided in the inner side wall or the outer side wall, and the sound insulation material is further injected between the inner side wall and the outer side wall through the first through hole, so that the inner space of the protrusion is changed from the incompletely filled with the sound insulation material to the completely filled with the sound insulation material.

7. The jacket structure according to claim 5 or 6, wherein a second through hole is provided in the inner side wall or the outer side wall, and an air bag having an opening connected to the second through hole is further provided between the inner side wall and the outer side wall; and gas can be injected into the air bag through the second through hole, so that the inner space of the bulge is changed from the state of not being fully filled with the sound insulation material to the state of being fully filled with the sound insulation material through the expansion of the air bag.

8. The jacket structure of any of claims 1-7, wherein the inner member is a ventilation duct, a fan site outer jacket, or a muffler jacket.

9. A method of implementation according to any one of claims 3 to 8, wherein the raised material is a flexible or resilient material; the method comprises the following steps: