JP-7857461-B1 - Architectural renovation methods

JP7857461B1JP 7857461 B1JP7857461 B1JP 7857461B1JP-7857461-B1

Abstract

[Problem] To provide a building renovation method that reduces the need to revise the ventilation path plan of a 24-hour ventilation system when performing renovations that involve replacing door and window fixtures with sealed types. [Solution] The first ventilated door device (10A) that forms an opening (5) in the partition wall (W1) separating the corridor (S1) and the bedroom (S2) is removed and replaced with a second sealed door device (10B). A first opening (26) is formed in the first ceiling material (20) that forms the ceiling (CL) of the corridor (S1), and a second opening (36) is formed in the second ceiling material (30) that forms the ceiling (CL) of the bedroom (S2). A ventilation duct (60) connecting the first opening (26) and the second opening (36) is provided in the space above the ceiling (AS). The ventilation duct (60) is a sound-absorbing duct (61) that includes sound-absorbing material (62). [Selection Diagram] Figure 10

Inventors

硲美友
高田梨名
俣野祐美

Assignees

ＤＡＩＫＥＮ株式会社

Dates

Publication Date: 20260512
Application Date: 20250228

Claims (9)

The system comprises a partition wall separating a first and second adjacent indoor space, a first joinery device capable of opening and closing an opening in the partition wall, a first ceiling material forming the ceiling of the first space, and a second ceiling material forming the ceiling of the second space. The space above the ceiling extends from above the first ceiling material to above the second ceiling material. A building renovation method in which the first building fixture is configured to form a gap that allows air to circulate between the first usable space and the second usable space, A first step involves removing the first joinery device and replacing it with a second joinery device configured to seal the opening in a closed state, A second step involves forming a first opening in the first ceiling material and a second opening in the second ceiling material, The third step includes installing a ventilation duct in the ceiling space, which connects the first opening and the second opening and allows air to circulate between the first and second usable spaces, using a sound-absorbing duct that includes sound-absorbing material. In the second step described above, The first opening is formed with an inner diameter that is larger than the outer diameter of one end of the sound-absorbing duct and smaller than the outer diameter of the sound-absorbing duct in the middle in the longitudinal direction. The second opening is formed with an inner diameter that is larger than the diameter of the other end of the sound-absorbing duct and smaller than the diameter in the middle of the sound-absorbing duct in the longitudinal direction. In the third step described above, The sound-absorbing duct is positioned so that one end of it is extended from the ceiling space through the first opening into the first usable space, and a component of the first ventilation grille is attached to one end of the sound-absorbing duct. The portion of the sound-absorbing duct extending from the first opening is then placed into the ceiling space, and the first ventilation grille is provided on the lower surface of the first ceiling material so as to cover the gap between one end of the sound-absorbing duct and the periphery of the first opening. The sound-absorbing duct is positioned so that the portion including the other end is extended from the ceiling space through the second opening into the second usable space, the other end of the sound-absorbing duct is attached to a component of the second ventilation grille, the portion of the sound-absorbing duct protruding from the second opening is then placed back into the ceiling space, and the second ventilation grille is installed on the lower surface of the second ceiling material so as to cover the gap between the other end of the sound-absorbing duct and the periphery of the second opening. A building renovation method characterized by the following features.
In the building renovation method described in claim 1, In the third step described above, a flexible sound-absorbing duct is used as the sound-absorbing duct. A building renovation method characterized by the following features.
In the building renovation method described in claim 1, The effective opening area of the aforementioned ventilation duct is 100 cm² or more. The second joinery device has sound insulation performance that reduces the sound pressure level by 20 dB or more at a frequency of 500 Hz. After the renovation, a sound insulation effect is obtained that reduces the sound pressure level between the first and second usage spaces by 20 dB or more at a frequency of 500 Hz. A building renovation method characterized by the following features.
In the building renovation method described in claim 1 , In the third step, the sound-absorbing duct is inserted into the ceiling space through the first opening, and while maintaining the state in which one end of the sound-absorbing duct is brought out from the ceiling space through the first opening into the first usable space, the other end of the sound-absorbing duct is pulled out from the second opening into the second usable space. A building renovation method characterized by the following features.
In the building renovation method described in claim 1, The fourth step includes attaching a first cover member to the inner periphery of the first opening of the first ceiling material, In the third step, the sound-absorbing duct is inserted into the first opening with the first cover member attached to its inner periphery. A building renovation method characterized by the following features.
In the building renovation method described in claim 5 , In the fourth step, the first cover member is attached to the inner periphery of the first opening of the first ceiling material in an annular manner such that its inner diameter is larger than the outer diameter of one end of the sound-absorbing duct. A building renovation method characterized by the following features.
In the building renovation method described in claim 5 , In the fourth step, the second cover member is attached to the inner periphery of the second opening of the second ceiling material. In the third step, the sound-absorbing duct is inserted into the second opening with the second cover member attached to its inner periphery. A building renovation method characterized by the following features.
In the building renovation method described in claim 7 , In the fourth step described above, The first cover member is attached to the inner periphery of the first opening of the first ceiling material in an annular manner such that its inner diameter is larger than the outer diameter of one end of the sound-absorbing duct. The second cover member is attached to the inner periphery of the second opening of the second ceiling material in an annular manner such that its inner diameter is larger than the outer diameter of the other end of the sound-absorbing duct. A building renovation method characterized by the following features.
In the building renovation method according to any one of claims 1 to 8 , In the third step described above, the entire ventilation duct is formed by the sound-absorbing duct. A building renovation method characterized by the following features.

Description

This invention relates to a method for renovating buildings. Buildings are equipped with a continuous ventilation system, also known as a 24-hour ventilation system, which constantly circulates air. Depending on the ventilation plan of the 24-hour ventilation system, it may be necessary to circulate air between two adjacent spaces through a partition wall with an opening. In this case, it is common practice to use a door or window mechanism that has an undercut (a vent opening) on the underside of the door or window to allow air to circulate, so that the underside of the door or window serves as a ventilation path even when the door or window is closed. An example of such a building fixture is disclosed in Patent Document 1. Japanese Patent Publication No. 2023-139843 This is a cross-sectional view illustrating the configuration of the indoor space, including the living room, that is the target of renovation in the building according to Embodiment 1.This is a cross-sectional view illustrating the space above the ceiling of a building before renovation according to Embodiment 1.This is a front view illustrating the configuration of the joinery device before renovation of a building according to Embodiment 1.This is a front view illustrating an opening in a building renovation according to Embodiment 1, with the first packing attached to the door frame.This is a front view illustrating the configuration of the joinery device after renovation of a building according to Embodiment 1.This is a diagram illustrating the configuration of a sound-absorbing duct used in the renovation of a building according to Embodiment 1.This is a plan view of a ventilation grill used in building renovation according to Embodiment 1.Figure 4 shows a cross-sectional view of the ventilation grille along the line VIII-VIII.This figure shows a part of the building renovation work according to Embodiment 1.This figure shows a part of the building renovation work according to Embodiment 1.This figure shows a part of the building renovation work according to Embodiment 1.This figure shows a part of the building renovation work according to Embodiment 1.This figure shows a part of the building renovation work according to Embodiment 1.This figure shows a part of the building renovation work according to Embodiment 1.This figure shows a part of the building renovation work according to Embodiment 1.This is a cross-sectional view illustrating a ventilation structure that utilizes the space above the ceiling after renovation of a building according to Embodiment 1.This is a cross-sectional view illustrating the configuration of the indoor space, including the bedroom, after renovation of the building according to Embodiment 1.This is a cross-sectional view illustrating a ventilation structure that utilizes the space above the ceiling after renovation of a building according to Embodiment 2.This is a top view showing the installation state of the ventilation duct according to Embodiment 2.This is a top view showing another installation configuration of the ventilation duct according to Embodiment 2.This is a top view showing another installation configuration of the ventilation duct according to Embodiment 2.This is a top view showing another installation configuration of the ventilation duct according to Embodiment 2.This is a conceptual diagram showing one aspect of a ventilation structure that utilizes the space above the ceiling after a building renovation according to Embodiment 3.This is a conceptual diagram showing another embodiment of the ventilation structure that utilizes the space above the ceiling after renovation of a building according to Embodiment 3.This is a cross-sectional view illustrating a ventilation structure that utilizes the space above the ceiling after renovation of a building according to another embodiment.This is a top view illustrating the configuration of a ventilation duct according to another embodiment.This is a cross-sectional view illustrating the configuration of an indoor space, including a toilet room, that is subject to renovation in a building according to another embodiment.This cross-sectional view illustrates the configuration of an indoor space, including a toilet room, after renovation of a building according to another embodiment. The following describes exemplary embodiments in detail with reference to the drawings. In the following embodiments, the ventilation structure for a building according to the present invention will be described using an example where it is applied to an indoor space including a living room. Note that the drawings are for conceptual explanation of the present invention. Therefore, in order to facilitate understanding of the present invention, dimensions, ratios, or numbers may be exaggerated or simplified in the drawings. Embodiment 1 The building renovation method according to this embodiment 1 is used in a residential building to replace a door and window device 10