KR200180500Y1 - Exhaust spiral duct cross-tee attached sound absorbing plate - Google Patents

Abstract

(1) Technical Field

Construction equipment of apartments and apartments

(2) Purpose of design

It is a device to block the noise generated from the inter-generational bath room and transmitted horizontally to the next-generation bath room in one granular exhaust duct shared by two generations.

(3) Composition of the design

Exhaust ducts of apartments and apartments are cement bricks, and the interior of the exhaust ducts is narrow so that cement mortar cannot be plastered.

Due to the rough surface of exhaust duct and high frictional resistance of exhaust gas, exhaust is not smooth and there is no device to block horizontal noise transmission between generations.

Exhaust duct material, which has good corrosion resistance and heat reflectivity, is made of circular exhaust duct and cross-tee, which is a joining pipe, and a sound-absorbing plate made of perforated plate and sound-absorbing material in the center of cross-tee branch. In addition, the sound insulation panel device should have a low cross-sectional thickness of less than 10mm to reduce the exhaust gas frictional resistance.

(4) effect of design

The sound insulation board device promotes the flow rate to the sound insulation and the exhaust gas at room temperature discharged from each generation, so that smooth exhaustion and noise blocking effect are obtained.

Description

Soundproof plate for round exhaust duct joining pipe {EXHAUST SPIRAL DUCT CROSS-TEE ATTACHED SOUND ABSORBING PLATE}

The present invention relates to a sound absorbing device in an exhaust duct joining pipe of an apartment and a public house. Specifically, a fiber-based sound absorbing agent of polyester type is formed in a sound absorbing room which is formed by thin holes having a plurality of holes formed in a thin steel plate coated with aluminum and zinc alloy. The present invention relates to a device for blocking horizontal noise transmission to the sound absorbing room by diffraction and reflection from the blocker by filling the sound absorbing plate and installing it on both sides of the sound insulating plate.

Exhaust ducts for baths in apartments and apartments of conventional apartments are connected to a single injection bed used by two generations on the same floor, and are installed on the rooftop without power 휀, ventilator, etc. Natural exhaust method, which is a method of evacuating, and the exhaust duct structure has a rough surface of cement brick and a high air friction resistance, so it has low exhaust efficiency and horizontally merges with the second-generation bath (toilet) and bath exhaust. There is no noise blocking device because it does not block the transmitted noise.

The supply, ventilation and exhaust of general buildings are made of galvanized steel sheets with smooth inside of the duct in the manner of forced air supply, ventilation, and exhaust with fan and air-conditioning unit using electric power. Air friction resistance is reduced, and the noise transmission process is transmitted from air conditioner (air conditioner) through DIFFUSER installed in the indoor ceiling.

Exhaust ducts of apartments and apartments are natural exhaust type by atmospheric wind power, and noise transmission process is opposed to the forced air conditioning system of general buildings.

In other words, the indoor noise of the bathroom (toilet) is horizontally passed through the exhaust duct installed horizontally through the exhaust duct installed horizontally through the exhaust vent mounted on the ceiling and the inner wall of the bathroom. Since the horizontal transmission of noise flowing into the bathroom is reciprocated, the present invention is designed to solve the above problems, and the exhaust air flow resistance inside the conduit pipe where the vertical exhaust exhaust duct and the generation exhaust duct of the natural exhaust system are horizontally joined. The configuration of the present invention will be described in detail with reference to the accompanying drawings by providing a dual effect of smooth exhaust and noise blocking as a device that blocks horizontal noise transmission.

A steel plate coated with aluminum and zinc alloy, which is corrosion-resistant and heat-reflective metal material. A sound insulation board is installed in the center of the cross-tee and cross-Y-bran branch. Configure.

Exhaust air and noise generated from the bathroom (bathroom) pass through the exhaust duct conduit and hit the sound insulation plate, and the exhaust air merges with the rising air in the exhaust duct formed by the atmospheric wind blower installed on the roof of the uppermost floor. The noise, which is exhausted upward and enters horizontally, passes through the small hole in the perforated plate at the center of the sound insulation panel, and reaches the sound absorbing chamber by diffraction and reflected waves.

Absorption of noise is achieved in the sound-absorbing layer of polyester system filled in the sound-absorbing chamber, and the noise hit by going straight to the sound insulation plate is reflected to the semicircular wall inside the conduit tube, so it goes through the above process by refraction and re-reflection. It has a noise blocking effect.

In addition, the sound insulation plate of the exhaust duct conduit formed vertically with the horizontal indoor exhaust duct has a partition function that divides the cylindrical exhaust duct into two, thus increasing the flow velocity of the exhaust air due to the volume change, thereby obtaining a smooth exhaust effect.

The present invention is the construction field of apartments and apartment houses. The AD.air-duct of apartment buildings is designed for the purpose of exhaust, and it is divided into the exhaust of bathroom (toilet) and the exhaust of kitchen.

In particular, the air duct of the bathroom (toilet) is installed in parallel with the pipe duct (PD.pipe duct), and the partition partition between the air duct and the pipe duct is a cement brick structure that consists of floor slab to ceiling slab. The air duct is connected from the lowest floor to the rooftop of the top floor, and is naturally exhausted by atmospheric wind power with an aspirator such as a non-powered fan and a ventilator.

The exhaust duct has a structure without a device for blocking horizontal noise transmission between two generations of the same floor.

AHU.air handling unit of general building removes noise by using duct attenuator sound absorbing chamber because it is a forced air supply and exhaust method using electric power and low frequency band of noise Because of its wide frequency, medium frequency and high frequency, the thickness of the sound absorbing device is also thick.

The increase in static pressure due to the sound absorbing device above is proportional to the increase in power of the air conditioner or air conditioner.

The natural air flow characteristics are as follows.

When the temperature of the flowing gas in the exhaust duct is higher than the temperature of the outside air, the buoyancy is generated by the density difference of the gas. As the temperature difference increases, the ventilation force by the buoyancy increases. The effect of air friction loss and heat loss in the exhaust duct on the ventilation capacity is very large. Exhaust duct of cement brick structure generates heat loss through inner surface when it is exhausted and its ventilation ability is lowered by flow friction with rough inner surface.

The natural exhaust type of apartments and apartment houses that use no-power owing to the atmospheric wind power, the exhaust duct must be made of a material and form with low air friction resistance in order to maintain a constant flow rate of the rising exhaust air. The sound absorbing chamber should be formed on the sound insulation panel so that the sound absorbing effect should not be changed even in high humidity of exhaust air.

That is, glass wool, which has been used as a sound absorbing material, has a low density, but the sound absorbing effect is reduced due to humidity and moisture, so rock wool or perlite sound absorbing material is not suitable.

Exhaust air in the bathroom (toilet) of the apartment is a condition where the temperature and humidity are high, and non-combustible or flame-retardant, self-extinguishing sound absorbing material is suitable, and the condition of the structure that does not interfere with the exhaust air flow in the exhaust duct is soundproof plate, sound absorbing material, all Too thin, too thin form of the vibration caused by the reflection of noise occurs because the sound insulation device and sound-absorbing material composition of the appropriate thickness is the technical problem of the present invention.

Figure 1. : Whole side view of round exhaust duct and conduit pipe

1. Sound insulation board 2. Joining pipe 3. Round duct 4. Lower floor concrete slab

5. 5'.Bathroom (Toilet) Exhaust duct and conduit

6. Upper floor concrete slab

Figure 2. : Round Exhaust Duct Conduit

A. Direction of left household viewed from confluence B. Direction of left household viewed from confluence

C. Center of confluence

Figure 3. : Round Exhaust Duct Conduit

1. Sound insulation board 2. Hum sound room C. Center of joining pipe

Figure 4. : Round Exhaust Duct Conduit

1. Sound insulation board 2. Sound absorption room 3. Joining pipe

Figure 5. : Evaluation of Round Exhaust Duct Conduit

1. Soundproof plate 2. Sound absorption room

Figure 6. : Soundproof floor plan

1. Soundproof plate 2. Sound absorption room

Figure 7. : Sound insulation plate side view

1. Soundproof plate 2. Sound absorption room

This paper is a circular duct structure of steel plate material with good corrosion resistance and heat reflection in pipe duct without partition wall of AD. Air duct and pipe duct of apartment or apartment house. The air duct area, which can be reduced, is designed to increase the area of the apartment.

Both sound insulation panels are filled with polyester sound-absorbing material in one sound insulation board and two sound-absorbing rooms perforated with holes in the center of the conduit of the horizontal exhaust duct and vertical rise exhaust duct of the apartment bathroom (toilet). Each of them is attached to the bottom of the sound absorbing chamber, and 2. in Fig. 4 is composed of a device to reduce the resistance of exhaust air flow to the inclined surface and to block horizontal noise transmission.

The exhaust air forming the rising air temperature at room temperature is a circular duct with heat reflecting metal structure and a sound insulation plate installed vertically in the conduit pipe, and the injection air is vertically connected to the upper floor. It acts as a guide vane that joins the rising air in the exhaust duct, and at the same time, the sound insulation effect that blocks horizontal noise transmission and the sound absorption chamber of the porous plate have an effect of extinction of noise.

Claims (1)

Soundproofing device installed in the conduit of the exhaust duct of an apartment and a public house. The sound insulation device in said exhaust duct confluence pipe.