JPH03181697A - Fire-preventive work tube of coolant tube penetrating in fire-preventive section - Google Patents

Abstract

PURPOSE:To execute a dew condensation preventive work easily by providing a fire-preventive work tube main body in which a fireproof rock wool plastic member is inserted and fixed in an iron pipe remaining a hollow tube part, and an L-shape circular soft piece body of a soft material in which the L-shape bendings of coolant tubes and warmth keeping tubes are inserted through cuttings. CONSTITUTION:In an iron pipe 1 of a specific size, a fireproof rock wool plastic material 3 shorter than the iron pipe 1, in which small round holes 2 and 2' responding to the penetrating coolant pipes R and R' of an air-conditioning device penetrate, is fitted and fixed providing a hollow tube part 4 at one pipe entrance of the iron pipe 1 to form a fire-preventive work pipe main body (a). To the hollow tube part 4, an L-shape circular soft piece body (b) is fitted. In the circular soft piece body (b), cuttings are formed to open and close in forked directions, and the L-shape bendings of the coolant tubes R and R', and warmth keeping tubes 8 and 8' are fitted through the cuttings. As a result, a secure, safe, simple, and rapid work can be executed in a narrow space.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is applicable to concrete fire protection divisions under construction.
The present invention relates to a fireproof construction pipe suitable for L-bending the refrigerant pipe of an air conditioner through iron pipe in a narrow effective space such as a compartment and an attic under fireproof conditions.

(Conventional technology) Conventionally, the construction of piping the refrigerant pipes of an air conditioner through a hollow iron pipe installed in a hole in a fireproof compartment was to fit a split cylinder into a pair of refrigerant pipes and wrap the outer periphery with non-combustible cloth. Then, the wound layer is inserted into the iron pipe, and the gap between the iron pipe and the winding layer is filled with a noncombustible backing material, and the boundary between the iron pipe and piping is complicated and troublesome to prevent attack. Since it is a multi-man-hour construction process that requires highly skilled techniques to create a sealed state, it requires the labor of two contractors, a plumbing contractor and a insulation contractor, which eliminates the disadvantages of extremely high costs. Therefore, by fitting and fixing a non-combustible rock wool molded member with a corresponding small circular hole that passes through the refrigerant pipe into the iron pipe, only a plumbing contractor can penetrate the refrigerant pipe into the fire protection section. The inventor of the present invention has developed a fireproof construction pipe that can easily, reliably, and safely prevent condensation on refrigerant pipes with a simple composition, has excellent workability, is highly economical, and is in high demand. The invention was developed and patented as Japanese Patent Application Nos. 1-239017 and 239018 in 1999, and at the same time as this application, an iron pipe fitted with a nucleic acid-type member was lengthened to prevent dew condensation in the empty cylinder portion on both days. An invention has also been filed for an invention in which a soft piece body that can be opened and closed is fitted easily and smoothly to the end of a urethane heat-insulating tube wrapped around a refrigerant pipe. This is a construction pipe for piping construction of refrigerant pipes in the case of straight pipe piping or in the case of large spaces such as fire prevention compartments and ceilings, and is extremely effective for installation in such large spaces. However, there are standard sizes for the noncombustible materials that protect iron pipes and refrigerant pipes according to fire safety standards, so while there is no problem in the large space mentioned above, there is a limit to the effective space between the ceiling and the like. In the case of a narrow effective space, the refrigerant pipe penetrating into the space from the fire prevention construction pipe should be connected to the blowing device M of the air conditioner installed on the ceiling T, as shown in Figure 7 of the attached drawings.
When installing refrigerant pipe RR to
It is necessary to bend the material into an extreme L-shape during construction.

Therefore, in this case, it is extremely difficult to cover the RR section of the L-shaped refrigerant pipe in a narrow space with a fireproof cover using a noncombustible material to prevent condensation.

(Problems to be Solved by the Invention) Therefore, the present invention aims to install refrigerant pipes from the construction pipes in narrow effective spaces such as so-called fire protection compartments and attic areas, where it is difficult to install the fire prevention construction and construction pipes of the above-mentioned prior invention. The non-combustible material cover and dew condensation prevention construction for the L-state pipes provide a convenient and highly demanded fire prevention construction pipe that can be easily, quickly, reliably and safely performed by a plumbing contractor alone, just like the previous invention, and is effective within a narrow limit. The object of the present invention is to completely eliminate the difficulty of piping construction of the prior invention for L-state refrigerant pipes in a space, and to make the construction really easy without requiring skilled technology. Measures for this) A rock wool molded member made of a non-combustible material, which is shorter than the iron pipe and has passed through a corresponding small circular hole through which the refrigerant pipe of the air conditioner is passed, is fitted and fixed into the iron pipe, leaving a hollow cylindrical part at one end of the iron pipe. Separately from the main body, it is made of the same material as the molded member or other soft material and can be cut and split into two parts to freely open and close, and can be used to connect the L-shaped part of the refrigerant pipe and the heat insulation tube part. It is characterized by an L-shaped circular soft piece body that is inserted into the split hole and whose upper portion is fitted into the hollow cylindrical portion of the main body, and a fitting combination of the core body and the L-shaped core piece body is provided.

(Function) A fireproof construction pipe made of iron pipe with a hollow cylindrical part at one end and a small circular hole that passes through the refrigerant pipe of the air conditioner and fitted with a non-combustible rock wool molded member. The main body is designed for the narrow effective space between the floor slab of the fire prevention compartment and the attic where the blowout device is installed, with a long through hole in the floor slab to the outside of the fire prevention compartment, and a hollow cylinder inside the narrow space. On the other hand, the opening side is shortened and fixed, and the refrigerant pipe is passed through the small circular hole of the molded member in the iron pipe, and the refrigerant pipe that has passed through the hollow cylinder is placed in an L state along the narrow space. Then wrap it in a heat insulating tube and connect it to the blowing device. Then, open and close the L-shaped circular soft piece body in two prongs at the cut split part for the C refrigerant and protection pipe part of the L state, and by opening it, make an L bend small circle corresponding to the L state refrigerant pipe part. Open a large diameter hole for communication between the hole and the heat insulating tube part in each split hole, fit the L-state refrigerant pipe into the corresponding open hole, close the upper part of the piece body, and leave it with the refrigerant pipe fitted. If the part is fitted into the hollow cylindrical part of the main body by shifting it from the fitted refrigerant pipe, the L-state refrigerant pipe will be positioned in the L-state small circular hole of the piece body, and the horizontal part will be closed. This results in a tight fit and the end of the insulation tube is tightly fitted into the large diameter hole into which it is tightly fitted. The body is fitted into the hollow cylindrical part of the main body, and by wrapping a hexagonal wire mesh from the outer periphery of the iron pipe in the hollow cylindrical part to the piece body, the opening of the piece body is sealed and the fitting part is removed. The piece body is completely fitted into the hollow cylinder without coming out, the bent part of the refrigerant pipe is covered, and the fitting of the heat insulating tube part ensures that condensation is prevented and safely within the narrow effective space. The cover construction for the refrigerant pipe can be easily completed when the button is in the L state.

In order to prevent dew condensation of the refrigerant pipe to the fireproof construction pipe body on the outside of the partition wall, the method of the prior invention or the method of fitting a piece body may be adopted.

(Example of implementation) Fire prevention construction in which a through hole H made in a concrete floor slab E serving as a fire prevention division is penetrated inward into a narrow space under the ceiling of an effective space and fixed with a U bolt v of an L angle F. In the pipe, inside the iron pipe tIJ of a predetermined size that is penetrated and fixed in the through hole H, there is a iron pipe (1) for the refrigerant pipe of the air conditioner (1), and a rock wool molded member (3) made of a non-combustible material that is very short.
A fireproof construction pipe main body a (Fig. 1) is formed by fitting and fixing the hollow cylinder part (4) into one pipe opening (in the illustration, the lower opening) of the iron pipe 111, and the main body a is Separately, in response to the L state of the refrigerant pipe RR, which passes through the small circular holes (2) (2) of the molded member (3) and is bent into an L shape outside the hollow cylinder part (4),
The upper part is made of the same material as the Kairi-shaped member 3) or other suitable non-combustible soft material, and the fitting part (5) is tightly inserted and fitted into the hollow cylinder part (4), and the fitting part (5) is made of the same material as the Kairi-shaped member 3) or other suitable non-combustible soft material. Bend it to a horizontal part (6) with a length of
) is connected to the small circular hole (2) (2) of the molded member (3), and an L-bent small circular hole (7) (7) is provided in which the refrigerant pipe is fitted in the RROL-shaped bent state. A heat insulating tube made of urethane wrapped around the refrigerant WRR is connected to the end wall part, and further, from the outer circumferential wall of the fitting part (5) to the upper side of the L shape, leaving the lower outer wall part at the end of the horizontal part (6), it is bifurcated. Equipped with a circular soft piece body in the shape of a cut split Q□ L, which can be opened and closed freely.
The piece body is inserted into the hollow part (4) of the iron pipe (1) at the fitting part (
Note that the L-shaped piece body in FIGS. 1 to 4 is L-shaped for right bending of the refrigerant pipe RR, and in FIG. In this case, the horizontal part (6) is for left bending of the refrigerant pipe RR.
is opposite to the left. In FIGS. 1 to 5, the refrigerant pipe RR is bent vertically.

The screw body in the case of Fig. 6 is for horizontal L-bending of the refrigerant '1yRR at the same height, not above and below. It will be installed on the side wall of the upper side, resulting in a horizontally split type.

Further, it is a common practice to bundle and tape a pair of pipes outside the piece body.

Then, after fitting the piece body into the iron pipe (17th hollow cylindrical part (4)), wrap the hexagonal wire mesh 09 from the iron pipe +1 + outer periphery to the piece body to secure the fitting of the skeleton piece body. This ensures that the opening is sealed.

Among them, 00 force in the figure is a large diameter hole provided on the upper side of the molded member (3), but this is one embodiment, and the construction means for preventing dew condensation in the refrigerant pipe RR on the upper side of the main body a is , it is optional to employ techniques of prior inventions, fitting using piece bodies, conventionally used techniques, etc.

Since the present invention is constructed as described above, Fig. 1 shows the separated state of the fire protection construction pipe body a and the L-shaped circular soft piece body, and Fig. 7 explains an example of construction using the product of the present invention as follows. It is.

If the space K between the floor slab E and the ceiling T is a very narrow effective space, even if the main body a is long outside the compartment and short inside the space and installed in the fitting hole H, the main body a If the refrigerant pipe RR penetrates the molded member (3), it is not necessary to bend it into an L shape inside the narrow space through the hollow cylindrical part (4) of the main body a. Heat insulation tube (8)
(Piping is done by wrapping it with 81.

Then, in the refrigerant pipe RROL-shaped bent state, the L-shaped piece body, which can be opened and closed for two prongs to be fitted into the hollow cylinder part (4) of the main body a, is cut and split (1 (I) to open and close the two-pronged piece body. and fit it into place.
The upper part is fitted into the hollow cylinder part (4).

That is, the piece body O is opened from the cut portion Ql, the refrigerant pipe RR is fitted into the opening portion of the fitting portion (5), the fitting portion (5) is closed, and the fitting portion (5) is opened. ) is fitted into the refrigerant pipe RR to fit it into the hollow cylinder part (4), and at the same time, the fitting part (5
), the bent part of the refrigerant pipe RR becomes a horizontal part (6)
The heat insulating tube (8) fits into the opening of the (8)
) is fitted into the large diameter hole (9) (9) to close the cut aO, the L bent portion of the refrigerant pipe RR will penetrate into the closing cut of the L-shaped piece body, The tube (8) (8
) is tightly fitted into the large-diameter holes (9) (9), and the piece body is quickly fitted and connected to the hollow part (4) of the main body a.

Therefore, by wrapping a hexagonal wire mesh around the outer periphery of the main body a to the piece body, it is possible to prevent the piece body from coming off and at the same time complete the sealing of the opening. The bending piping construction of the refrigerant pipe RR is completed.

(Effect of the invention) With the above structure and operation, fire prevention piping construction of the refrigerant pipe RR in a fire prevention compartment with a very narrow effective space can be performed by opening and closing the two prongs and fitting the L-bent refrigerant pipe RR. If the L-shaped circular soft piece body provided with an opening is opened in two from the cut split H, and the bent part of the refrigerant pipe RR is fitted into the split opening and the split opening is closed, the bent part will have the effect described above. The button υ can be easily and quickly fitted into the piece body, and by simply fitting and connecting the piece body to the main body a and wrapping it with wire mesh, it can be used in combination with fire prevention construction pipes for spaces without requiring any skill. If this is done, it will be possible to construct fireproof piping that corresponds to any fireproof compartment conditions for refrigerant pipes, and the scope of application will be greatly expanded, the demand will be very high, and it will be convenient and useful. It has the advantage of being safe and convenient to handle.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of a partially cross-sectional fire protection construction pipe body separated from an L-shaped piece body, and FIG. Fig. 3 is a plan view of the piece body showing the two-pronged opening and closing with dotted lines; the fourth factor is a slope view of the piece body; Fig. 5 is a slope view of the piece body for left bending; The figure is a perspective view of a piece body for horizontally bending refrigerant pipes at the same height, and FIG. 7 is an example of the construction state. tlJ...iron pipe, (2) (2)...small circular hole, (3)
... Rock cool Py, mold member, (4) ... hollow cylinder part, a ... fire protection construction pipe body, b ... L-shaped circular soft piece body, (5) ... fitting part , (6)...horizontal part,
(7H7)...L-bending small circular hole, (9) (9)...large diameter hole, (11...cut split. Patent issued by Kiyoshi Taniai

Claims (1)

[Claims] Fire prevention construction in which a rock wool molded member made of non-combustible material that is shorter than the iron pipe is inserted into the iron pipe through a small circular hole for passing the refrigerant pipe of the air conditioner, and is fixed by fitting it into the iron pipe, leaving an empty cylindrical part at one end of the iron pipe. A pipe body, which is made of the same material as the molded member or other soft material, separate from the main body, and can be cut into two parts to open and close freely, and the L-shaped bent part of the refrigerant pipe and the heat insulation tube part are fitted into the split holes. A refrigerant pipe penetrating a fireproof compartment characterized by a combination of the main body and the L-shaped piece body, the L-shaped circular soft piece body having an upper portion fitted into the hollow cylindrical portion of the main body through the refrigerant pipe. Fire protection construction pipes.