JP3462075B2 - How to remove harmful gas generating substances - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a method for removing harmful gas generating substances from a floor material provided above a floor heating facility for increasing the indoor temperature. is there. 2. Description of the Related Art Recently, harmful gases such as formaldehyde and VOCs (volatile organic compounds) harmful to the human body have been generated in indoor spaces of buildings, which has become a problem. Floor flooring is mentioned as one of the main sources of these harmful gases. Flooring materials are generally formed from plywood, and phenolic and urea-based materials used for this plywood are used.
Substances contained in the melanin-based adhesive cause the generation of harmful gases. Therefore, a bake-out method has been conventionally implemented to prevent indoor pollution by harmful gases.
The bakeout method removes harmful gas-causing substances from indoor flooring and the like before the completion of a building. in this way,
A heating device is installed in the room, and the room is kept at a high temperature of about 35 to 40 ° C. for 1 to 2 days to forcibly release harmful gas from floor materials and the like, and harmful gas generating substances are used as floor materials and the like. Remove from After the removal is completed, the indoor air is replaced and the harmful gas is discharged outside the room. [0004] However, in the bakeout method, since the entire room is heated, it takes a long time to apply sufficient heat to the floor material and the like, and the removal of harmful gas generation-causing substances is required. It took a considerable amount of time to complete. Furthermore, after the removal, the indoor air has to be replaced and the harmful gas has to be discharged outside the room, which takes a considerable number of working days including the working time required to carry in and carry out the heating device. In addition, energy loss is large, and a large-scale heating device is required, resulting in a considerable increase in cost. Therefore, the present inventors paid attention to floor heating equipment provided in a building, and thought that this equipment could not be used. [0006] The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to use a floor heating facility to remove harmful gas generating substances from flooring materials at low cost and efficiently. It is an object of the present invention to provide a method for removing gas generating substances. [0007] In order to achieve the above object, the present invention provides a method for removing a harmful gas generating substance from a floor material provided above a floor heating facility for raising a room temperature. After installing a heat insulating material covering the indoor side of the floor material and installing a gas capturing unit for capturing harmful gas between the heat insulating material and the floor material, The material is heated, and the harmful gas generated from the floor material by the heating is captured by the gas capturing unit. In this method, since a heat insulating material is provided on the indoor side of the flooring material so as to cover the indoor side, the floor material can be efficiently heated and kept at a high temperature without releasing much of the heat from the floor heating equipment to the indoor side. Can be. Thereby, a large amount of harmful gas can be generated from the floor material in a short time. The harmful gas generated is
The outflow to the indoor side is blocked by the heat insulating material, and the gas is trapped by the gas trapping portion interposed between the heat insulating material and the floor material, so that the indoor space is not much polluted. Therefore, the harmful gas generating substance can be removed from the flooring material very efficiently and in a short time with little energy loss. An embodiment of the method for removing harmful gas generating substances according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an embodiment of the method for removing harmful gas generating substances according to the present invention. In this method, a gas trapping material 8 and a heat insulating material 10 are provided on the floor 2 provided above the floor heating equipment 4 for raising the temperature of the room 2 so as to cover the floor 2 on the room 2 side. The gas trapping material 8 is a heat insulating material 1
0 and the floor material 6. Here, the floor heating equipment 4 is a so-called indoor 2
And a warm fluid 1 such as hot water flowing through the heat transfer tube 12.
4 heats the floor material 6 via the heat transfer material 16 to raise the temperature of the room 2. The heat insulating material 10 blocks the heat normally given to the floor material 6 by the floor heating equipment 4 to warm the room 2 so as not to escape to the room 2 side. The heat insulating material 10 is formed of, for example, an inorganic fiber-based material such as glass wool, rock wool, or felt, or a foamed plastic-based material such as polystyrene or urethane, or a material having a heat-blocking property. On the other hand, the gas trapping material 8 traps harmful gases such as formaldehyde generated from the floor material 6 from the air, and is formed in a sheet shape. The gas trapping material 8
It is formed of zeolite, activated carbon, or other physical adsorbents, or a chemical adsorbent formed of various metal salts having the property of trapping harmful gases, and other materials capable of trapping harmful gases from the air. The chemical adsorbent is formed by, for example, impregnating or coating an appropriate sheet substrate with an adsorbent composed of various metal salts or the like. Gas capture material 8
Is installed separately from the heat insulating material 10, and the floor material 6 and the heat insulating material 1
When it is interposed between the heat insulating material 10 and the heat insulating material 10, it may be provided integrally. After the installation of the heat insulating material 10 and the gas trapping material 8 is completed, the floor material 6 is heated by the floor heating equipment 4. Since the heat insulating material 10 is installed on the room 2 side of the floor member 6, the heat supplied from the heat transfer tube 12 can be efficiently added to the room 2 without escaping much of the heat supplied to the room 2 side. That is,
Even the floor heating equipment 4 which can only be set to a temperature of about 20 to 30 ° C. with respect to the room temperature and has a low heating capacity, can only sufficiently heat the floor material 6 to a higher temperature. It is. Thereby, generation of a harmful gas is promoted to the flooring material 6 and a large amount of harmful gas can be generated from the flooring material 6 in a short time. The generated harmful gas can be trapped by the gas trapping material 8 while blocking the outflow to the room 2 side by the heat insulating material 10, so that the room 2 does not need to be polluted. After the removal of the harmful gas, the operation of removing the harmful gas generating substance is completed by removing the gas trapping material 8 and the heat insulating material 10 from the floor 6. As described above, in this method, unlike the conventional method, the entire room is not heated, and only the floor material 6 is partially heated. Therefore, the energy loss is small and the floor material 6 can be efficiently and shortly heated. Harmful gas generating substances can be removed. In addition, since the harmful gas can be removed without releasing it into the room 2, there is no need for ventilation and no pollution of the air. Furthermore, since a large-scale heating device is not required, cost can be reduced. The gas trapping portion for trapping the harmful gas according to the present invention is not limited to the gas trapping material 8, but may be applied or impregnated if provided between the heat insulating material 10 and the flooring material 6. It may be formed directly on the heat insulating material 10 or may be formed by dispersing a powdery or granular gas trapping material on the surface of the flooring 6. The floor heating equipment 4 is not limited to the hot water type, but may be an electric heating type, a hot air type, a gas heating type, or the like. According to the method for removing harmful gas generating substances according to the present invention as described in the embodiments of the present invention, the heat insulating material is provided on the indoor side of the flooring to cover it. ,
Floor heating equipment can heat floor materials efficiently,
The harmful gas generating substance can be removed from the flooring material in a short time. Since the entire room is not heated as in the conventional case, the heat efficiency is high and the energy loss is small. In addition, since large-scale equipment is not required, the operation can be performed at low cost.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing one embodiment of a method for removing a harmful gas generating substance according to the present invention. [Description of Signs] 2 Room 4 Floor heating equipment 6 Floor material 8 Gas trapping material 10 Insulation material 12 Heat transfer tube 14 Heat fluid 16 Heat transfer material

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroshi Iwanami 2-3-3 Kandaji-cho, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo Head Office (72) Inventor Hideki Tani 4-1-1 Hiranocho, Chuo-ku, Osaka-shi, Osaka No. 2 Inside Osaka Gas Co., Ltd. (56) References JP-A-10-280659 (JP, A) JP-A-10-281513 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B01D 53/00 E04F 15/18 F24F 7/00

Claims (1)

(57) [Claim 1] A method for removing a harmful gas generating substance from a floor material provided above a floor heating facility for raising a room temperature, comprising: After installing a heat insulating material covering the heat sink and interposing a gas trapping portion for trapping harmful gas between the heat insulating material and the floor material, the floor material is heated by the floor heating equipment, and the heating is performed. A method for removing a harmful gas generating substance, wherein a harmful gas generated from the floor material due to a temperature is captured by the gas capturing unit.