KR100654288B1 - Bathroom silencer for multi-layer house - Google Patents

Abstract

A bathroom silencer for a multi-layered house is provided to reliably blocking noise, simplify structure, install the silence in a small space, and reduce pressure loss. A bathroom silencer for a multi-layered house includes a body(10), and two caps(20). The body includes a cylindrical outer case, an insert pipe, and a separation plate. The insert pipe is installed in the cylindrical outer case in a concentric manner, and has a diameter and a length smaller than that of the outer case. The separation plate fixes the insert pipe to the outer case to block propagation of a sound wave between the outer case and the insert pipe. The two caps are assembled to both ends of the outer case of the body, one of which is connected to a vent hole or a vent fan outlet of the bathroom, and the other of which is exposed to a vent bit or connected to a vent duct.

Description

 Silencer for multi-storey building {Bathroom Silencer for Multi-layer House}

  1 is an assembly view of a silencer of the present invention.

  2 is a structural diagram of a main body of a silencer used in the present invention.

  3 is a stopper structural diagram of a silencer used in the present invention.

  Figure 4 is a schematic diagram of the shape of a silencer which is an embodiment of the present invention.

  5 is an installation diagram installed in the building the muffler of the present invention.

  6 is a performance graph of one embodiment of the present invention silencer.

  7 is a silencer with a filter of the present invention.

  8 is a silencer attached to the present inventors big net.

  9 is a silencer lined with a sound absorbing material in the present inventors.

The present invention relates to a silencer that blocks the propagation of noise, and more particularly, in a multi-story building that uses a ventilation passage together, for the noise blocking to block the transmission of noise from one floor to an adjacent upper or lower floor through the ventilation passage. It is a silencer.

Recently, with the improvement of living standards, the demand for a pleasant and quiet living environment is increasing. In particular, noise is a major cause of conflict between neighbors and is becoming a major condition for creating a pleasant living environment.

In the case of shared residential buildings such as apartments, townhouses, multi-purpose buildings, and officetels, households of the same structure are multi-layered, and the bathrooms are directly connected by common ventilation piping. This ventilation pipe is the noise transmission path, causing inter-layer noise problems. In this inter-floor noise problem, noise transmission between the lower floor and the upper floor through the ventilation pipe of the toilet is particularly problematic.

In fact, the bathrooms in the apartments are very vivid with the noises of the living room, such as the peeing from the neighboring floors, the sound of bathtubs, the sound of conversation and the sound of music. In particular, most toilets are also combined with bathrooms, requiring high privacy, and therefore, inter-floor noise transmission must be cut off.

In large office buildings, centralized air conditioning and air circulation ducts for heating and cooling are connected to each floor. Duct silencers are mainly used to block the inflow of fan noise into the room. This duct silencer has a structure in which a sound absorbing material such as glass wool is attached to a part of the air moving duct and is absorbed by the sound absorbing material in the process of propagating noise.

And the muffler of the car is also a kind of silencer, which has a very complicated structure, through which the combustion gas and the engine explosion noise are emitted to the outside. These mufflers do not have very large noise reductions, but pressure losses are very large and expensive, and thus silencers of this type cannot be installed in the air vents of the apartment bathroom.

Industrial silencers used in power plants, etc., pass through a wide passage (section A1) and then suddenly enter a narrow passage (section A2). The silencer is based on the principle of reduction: the degree of reduction of sound energy is determined by the expansion ratio (m = A1 / A2), which is the rate at which the cross-sectional area is changed.

Silencers using this principle are generally referred to as inflatable silencers. The shape of the silencer can be made by installing a connection pipe having a larger or smaller cross-sectional area than the original passage in a passage through which sound waves pass, or by installing a separator plate having a small hole in the passage.

However, silencers for bathrooms cannot be installed with large expansion ratios, since the installation site is mainly inside the bathroom ceiling of the apartment or inside the exhaust bit. And if the passage is narrowed, the pressure loss increases, so smooth ventilation does not occur, which is a problem.

Since the air vent of the apartment is relatively small and the installation space is narrow, it is not possible to install a high-performance ventilation fan. In addition, due to the problems of hygiene, moisture, and smooth ventilation, there is a problem in that a duct silencer or a muffler in the form of an automobile muffler cannot be used.

In order to solve the above problems, the present invention is simply installed in a place where the noise can be transmitted to the ventilation passage, such as the toilet of the apartment house, it is a silencer that can block the transmission of noise between floors. The muffler for this purpose has a sound noise blocking function against the noise generated in the bathroom, the structure is simple, it can be installed in a small space, the pressure loss must be very small, and it is easy to install and can be easily installed in an existing building. In addition, it must be inexpensive and easy to manufacture.

In addition, due to the nature of the location where the silencer is to be installed, problems such as corrosion, dust, and hygiene may occur due to moisture. Therefore, consideration should be given when selecting the type or material of the silencer.

The shape of the present invention is a shape in which the stopper 20 having an air flow path is coupled to both ends of the cylindrical body 10, as shown in FIG.

The configuration of the present invention will be described in detail with reference to the accompanying drawings.

The body 10 has a cylindrical outer cylinder 11, an insertion tube 12, which is smaller in diameter and length than the body and is installed inside the outer cylinder, forming a concentric circle with the outer cylinder, as shown in FIG. A separator plate 13 is fixed to the outer cylinder and prevents sound waves from propagating between the outer cylinder and the insertion tube.

The outer cylinder is a cylindrical shape having a certain diameter and length, for the appearance can be processed patterns such as irregularities on the outer surface of the cylinder.

Separation plate 13 is installed at the intermediate point in the longitudinal direction of the inner cylinder 11, the holes are bored to reduce the pressure loss by smoothly flowing the air.

As shown in FIG. 3, the stopper 20 is sized to allow one end to be assembled with an outer cylinder, and the other side 21 is sized to be connected to a ventilation fan or a duct connected thereto. If a part of the stopper 20 is assembled with the outer cylinder 11 to form a deep groove with the outer rib 22 and the inner rib 23, the body 10 can be directly assembled into the groove, which is convenient.

The stopper 20 and the body 10 may be combined by any method such as adhesives, screws, rivets, but as shown in FIG. 3, a deep groove is formed at the end of the stopper 20 to form the body 10. It is good for ease of assembly or aesthetics to make the outer cylinder part of

The silencer for a bathroom of the present invention can be made of any solid material such as metal, plastic, wood, but in consideration of various factors such as corrosion resistance, hygiene, ease of manufacture, and price of a product, polypropylene (PP), PVC, acrylic Plastic materials such as are suitable.

And the combination of the outer cylinder 11, the insertion tube 12, the separating plate 13 of the body can be combined by any method, such as adhesive, screws, rivets made of each of these parts separately, In case of manufacture, it can be molded at once by mold.

The function of the present invention silencer is as follows.

When sound waves flow into one end of the muffler stopper 20 and proceed in the length direction of the muffler, the sound energy suppressor is reduced at the end of the insertion tube 12 in accordance with the expansion ratio as in the case of a conventional inflatable muffler. And the sound wave remaining unreduced proceeds to the place where the insertion tube 12 and the separator plate 13 meet, where a part is reflected back. These reflected waves meet with the sound waves originally entering and cancel each other out, reducing the sound energy. Although some sound waves pass through the holes drilled in the separating plate 13, each of these holes is very small compared to the cross-sectional area of the outer cylinder 11 of the silencer, so the expansion ratio is so high that most of the sound energy is lost and does not affect much. As the sound wave passing through the insertion tube 12 escapes to the other end and expands again, the sound energy decreases, and part of the sound wave propagates to the separating plate 13 and reflects and meets the sound wave that originally entered. The energy is further reduced.

Separation plate 13 serves to prevent the large pressure loss by smoothly flowing the air into the hole drilled in the plate while reducing the sound energy by causing the reflection of the sound waves to occur.

Experimental results show that the longer the length of the outer tube and the insertion tube, the wider the frequency range of noise is reduced, and the larger the ratio of the diameter of the outer tube and the insertion tube is, the larger the damping value is at each frequency.

The silencer may be installed as shown in FIG. 5 in a bathroom of an apartment.

As an embodiment of the present invention as shown in Figure 4 the main dimensions of the silencer, the length of the outer cylinder 11 is 250mm, the inner diameter is 140mm, the length of the insertion tube 12 is 150mm, the inner diameter is 50mm In the case of drilling four 20 mm diameter holes in the separation plate, the maximum attenuation characteristic is shown at 1000 Hz sound, which is the largest frequency component of the living noise of the house, as shown in FIG. The pressure loss was very low, 1.4 mmAq.

When the filter 30 is installed at the inlet of the stopper 20 of the present invention silencer as shown in FIG. 7, foreign matters can be prevented from entering the toilet, and only the filter 30 is removed when cleaning the silencer. It can be cleaned easily. The filter 30 is built in the cylindrical case 31 with a jaw, and the case is inserted into the inlet of the stopper for convenient removal.

Installing the big net 40 as shown in FIG. 8 at the inlet of the stopper 20 of the muffler of the present invention, it is possible to prevent foreign substances or pests from entering the toilet through the ventilation passage. Tycoon 40 is attached to the cylindrical case 41 with a jaw, and the case is inserted into the inlet of the stopper for convenient removal.

Lining the porous sound absorbing material 50 on the inner surface of the outer cylinder 11 of the silencer according to the present invention, it is possible to further increase the sound absorbing performance of the silencer by the sound absorbing effect. As the sound absorbing material that can be used, foamed aluminum sound absorbing material, aluminum cotton sound absorbing material, stainless steel cotton sound absorbing agent, glass wool, rock wool or the like can be used.

The muffler of the present invention reduces the energy of the sound wave by using the separation plate 13 and the insertion tube 12 to cause the expansion and reflection of the sound wave several times while using the principle of the expandable silencer, and thus the noise passing through the silencer. Reduce effectively. And a small hole drilled in the separation plate 13 prevents a large pressure loss occurs.

Since the muffler of the embodiment has a noise reduction effect of 10 dB or more, when the muffler is used for each household in an apartment, the noise generated from one generation is propagated to neighboring households through the two silencers, and thus 20 dB or more is reduced in this process. Will be.

This silencer is very small, as shown in the embodiment of Figure 4 can be obtained a large amount of noise reduction, and if the material is made of plastic can be produced inexpensively by injection method, there is no porous material inside it is easy to clean and easy to clean. And this muffler can be easily installed in the ventilation openings of all apartment houses such as apartments.

Claims (5)

A cylindrical outer cylinder 11, an insertion tube 12 having a diameter and a length smaller than the outer cylinder while being concentric with the outer cylinder, and installed inside the outer cylinder, and fixing the insertion tube to the outer cylinder and sound waves between the outer cylinder and the insertion tube. A body 10 including a separation plate 13 having an air distribution hole as blocking the progress of the process; Two stoppers, which are assembled at both ends of the outer cylinder 11 of the body 10, one of which is connected to a vent or vent fan outlet of a bathroom, and the other of which is exposed inside a ventilation bit of a building or connected to a ventilation duct Containing 20 Silencer for bathroom ventilation. In the silencer for bathroom ventilation of claim 1, The outer cylinder 11 has a length of 240 mm to 260 mm, an inner diameter of 135 mm to 145 mm, Insertion tube 12 has a length of 140mm to 160mm, the inner diameter is 45mm to 55mm Silencer for bathroom ventilation. In the silencer for bathroom ventilation of claim 1, Characterized in that the filter 30 is further provided at the inlet of the stopper 20 of the muffler, Silencer for bathroom ventilation. In the silencer for bathroom ventilation of claim 1, Characterized in that further equipped with a big net 40 at the inlet of the stopper 20 of the silencer, Silencer for bathroom ventilation. In the silencer for bathroom ventilation of any one of claims 1 to 4, The lining of the porous sound absorbing material 50 on the inner surface of the outer cylinder 11 of the silencer, Silencer for bathroom ventilation.

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