JPH083866Y2 - Branch device for air supply / exhaust duct in hotel guest room - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a branching device for an air supply / exhaust duct in a hotel guest room.

(Prior Art) In the Japanese Utility Model Publication No. 63-28369, the present applicant discloses that a vertical branch pipe having a pair of upper and lower sides and a horizontal branch pipe having a pair of right and left sides cross each other in a cross shape, and the same is provided between inner wall surfaces of the upper and lower vertical branching pipes. The upper and lower vertical branch pipes of the cross joint pipe, which are located on the diameter of the vertical branch pipes and have the vertical sound insulation plate made of a steel plate orthogonal to the pipe axial direction of each of the horizontal branch pipes, are respectively arranged in the pipe shafts. A branching device for the air supply / exhaust duct in the hotel guest room, which is connected to the vertical shafts installed in the upper and lower sides, and is connected to the horizontal air supply / exhaust ducts of the left and right hotel guest rooms adjacent to each other with the left and right horizontal branch pipes sandwiching the pipe shafts. Proposed.

(Problems to be solved by the invention) In the conventional device, since the vertical sound insulation plate orthogonal to the upper and lower vertical branch pipes is made of a steel plate and is single-layered, the sound insulation effect against high sound such as shower sound is small, and the vertical sound insulation is also provided. Since the plate has a width corresponding to the diameter of the vertical branch pipe, it may vibrate due to the supply / exhaust flow in the duct, or may generate noise by resonating with a shower sound or the like.

The present invention has been proposed in view of the above problems of the prior art. The object of the present invention is to improve the sound insulation performance, vibrate in the air supply / exhaust flow, or generate noise by resonating with the shower sound. The point is to provide a branching device for air supply and exhaust ducts in hotel guest rooms.

(Means for Solving the Problems) In order to achieve the above-mentioned object, a branching device for an air supply / exhaust duct in a hotel guest room according to the present invention comprises a vertical branch pipe having a pair of upper and lower sides and a horizontal branch pipe having a pair of right and left sides. In the cross joint pipe crossed with each other, the outer wall surface of the inner pipe, which is located at the center of each vertical branch pipe and is arranged in parallel with the pipe axial direction of each vertical branch pipe, and each of the vertical branch pipes. A vertical sound insulation plate is installed between the inner wall surface and the vertical sound insulation plate in a cross shape in a plan view, and the horizontal branch pipes communicating with the vertical branch pipes between adjacent vertical sound insulation plates are connected in a cross shape in a plan view. Has been done.

According to a second aspect of the present invention, a fireproof sound absorbing plate is attached between the outer wall surface of the inner pipe and the inner wall surface of each of the vertical branch pipes in a cross shape in a plan view, and faces the horizontal branch pipe of the inner pipe. The outer wall surface is covered with a fireproof sound absorbing material.

(Operation) According to the present invention, as described above, the outer portion of the inner pipe located at the center of each of the upper and lower vertical branch pipes in the cross joint pipe and arranged in parallel with the pipe axial direction of the respective vertical branch pipes. Between the wall surface and the inner wall surface of the vertical branch pipe, the vertical sound insulating plates are attached at four places in the cross direction in a plan view, so that the noise from the horizontal branch pipe in the cross joint pipe is adjacent to the sound insulation. It will be doubly blocked by the plate.

Further, since the inner pipe is arranged at the center of the vertical branch pipe, a sound insulating plate can be attached without obstructing the flow of air supply and exhaust, and the width of the sound insulating plate in the diameter direction can be reduced. Is.

According to the second aspect of the present invention, the sound insulation plate mounted between the inner pipe and the vertical branch pipe is made of a fireproof sound absorbing plate, so that the sound insulation plate itself has a sound absorbing effect and the sound insulation plate is made fire resistant. By giving it, the disaster prevention effect is exhibited.

(Embodiment) The present invention will be described below with reference to the illustrated embodiment.

A cross joint pipe is formed by vertically crossing one vertical branch pipe 1,1 'and left and right one horizontal branch pipe 2,2' in a cross shape and located at the center of the vertical branch pipe 1,1 '. In addition, the inner pipe 3 arranged in parallel with the pipe axial direction of each vertical branch pipe 1, 1 '
Between the outer wall surface and the inner wall surface of each of the vertical branch pipes 1 and 1 ', four vertical sound insulation plates 4 are attached in the cross direction in a plan view.

Thus, the upper and lower vertical branch pipes in the cross joint pipe A 1,
1'is connected to the upper and lower vertical shafts B, B'arranged in the pipe shaft of the hotel, and the left and right horizontal branch pipes 2,
2'is connected to the left and right horizontal air supply / exhaust ducts C, C'that lead to the hotel guest rooms adjacent to each other on both sides of the pipe shaft.

Since the illustrated embodiment is configured as described above,
The noise is prevented from entering through the air supply / exhaust ducts C, C ′ of the adjacent guest rooms by the double vertical sound insulation plates 4, 4. Further, the vertical sound insulation plate 4 has the same structure as the above-mentioned conventional structure.
The inner wall surface of each vertical branch pipe 1, 1 ′ and the inner pipe 3 arranged at the center of each vertical branch pipe 1, 1 ′ without being disposed between the inner wall faces of 1, 1 ′ facing each other. Since it is disposed between the vertical sound insulation plate 4 and the outer wall surface, the width of the vertical sound insulation plate 4 in the diametrical direction is reduced. Therefore, the sound insulation effect is improved even with respect to the high sound such as the shower sound in the opposite bathroom from the horizontal branch pipes 2, 2 ', and the sound insulation plate 4 vibrates in the air supply / exhaust flow or resonates with the shower sound to generate noise. It never happens.

FIG. 5 shows another embodiment of the present invention in which a perforated asbestos board and a non-perforated asbestos board are laminated between the outer wall surface of the inner pipe 3 and the inner wall surfaces of the vertical branch pipes 1, 1 '. Or a perforated asbestos board with a glass fiber layered in a fireproof sound absorbing board 5 in the cross direction in a plan view, and a horizontal branch pipe in the inner pipe 3.
The opposite surfaces of 2.2 'are covered with a fireproof sound absorbing material 6 made of the same material as the fireproof sound absorbing board 5, and noise from the horizontal branch pipe 2.2' is blocked by the double fireproof sound absorbing board 5 and the fire resistant sound absorbing material 6. In addition, the sound-insulating performance is further improved by the sound-absorbing effect of the fire-resistant sound absorbing plate 5 and the fire-resistant sound absorbing material 6 itself.

(Effects of the Invention) According to the present invention, as described above, the vertical branch pipes of the upper and lower sides and the horizontal branch pipes of the left and right sides are located at the center of the vertical branch pipe in the cross joint pipe crossed in a cross shape, By installing a vertical sound insulation plate in the cross direction in plan view between the outer wall surface of the inner pipe and the inner wall surface of the vertical branch pipe arranged in parallel with the pipe axis direction of the pipe, The noise from the horizontal branch pipe is blocked by the double vertical sound insulation plate without obstructing the distribution, and the width of the vertical sound insulation plate in the diametrical direction is reduced, so that the shower in the opposite bathroom can pass through the horizontal branch pipe. It also has a sound insulation effect against high sounds such as sound, and prevents the vertical sound insulation plate from vibrating in the air supply / exhaust flow or generating noise by resonating with the shower sound.

According to a second aspect of the present invention, a fireproof sound absorbing plate is attached between the outer wall surface of the inner pipe and the inner wall surface of each of the vertical branch pipes in a cross shape in a plan view, and the outer outer wall of the horizontal branch pipe in the inner pipe faces the outer wall of the inner pipe. By covering the wall surface with a fireproof sound absorbing material, the noise from the horizontal branch pipe is blocked by the double fireproof sound absorbing board and the fireproof sound absorbing material, and the soundproofing effect is provided by the sound absorbing effect of the fireproof sound absorbing board and the fireproof sound absorbing material itself. In addition to the above, the fire resistance performance of each material exerts disaster prevention performance.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a branching device for an air supply / exhaust duct of a hotel bathroom according to the present invention, and FIG. 2 is a plan view thereof.
3 and 4 are views III-III in FIG. 1 as well as arrows IV-IV in FIG. 1, and FIG. 5 is a cross-sectional plan view showing another embodiment of the present invention. A: Cross joint pipe, 1.1 '... Vertical branch pipe, 2,2' ... Horizontal branch pipe, 3 ... Inner pipe, 4 ... Vertical sound insulation plate, 5 ... Fireproof sound absorbing plate, 6 ... Fireproof sound absorbing Material.

Claims (2)

[Scope of utility model registration request] 1. A cross-joint pipe in which a vertical branch pipe having a pair of upper and lower sides and a horizontal branch pipe having a pair of left and right sides are crossed in a cross shape,
While located at the center of each vertical branch pipe, the outer wall surface of the inner pipe arranged in parallel with the pipe axis direction of each vertical branch pipe,
Between the inner wall surface of each of the vertical branch pipes, a vertical sound insulating plate is attached in a cross shape in a plan view, and the horizontal branch pipes communicating with the vertical branch pipes between adjacent vertical sound insulating plates are cross-shaped in a plan view. A branch device for the air supply / exhaust duct of a hotel guest room, which is characterized by being connected in the direction. 2. A fireproof sound absorbing plate is attached between the outer wall surface of the inner pipe and the inner wall surface of each of the vertical branch pipes in a cross shape in a plan view, and an outer surface of the inner pipe facing the horizontal branch pipe. The branching device for the air supply / exhaust duct of a hotel guest room according to claim 1, wherein the wall surface is coated with a fire-resistant sound absorbing material.