JPS6240613B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention discharges combustion waste gas from a combustion device, such as a gas-fired heating device, through a hole in the outer wall of a building, and fresh air is brought in from outside the building through the hole. Regarding the FURUYU terminal for supplying equipment.

Conventional technology and its problems Combustion devices designed to exhaust combustion gas from the outer wall of a building without using an expensive chimney have been known for some time, and in this case, a fuel terminal is installed on the wall. is set up.

Such friu terminals generally use double pipes to effectively utilize energy through heat exchange between intake and exhaust, to insulate between the exhaust pipe and the building wall, and to save space. . In the case of small-sized Furyu terminals, this double pipe is manufactured integrally in advance in order to facilitate installation, but (i) adaptability when the wall thickness of the building varies (ii) As the Furyu Terminal becomes larger, the strength of the pipe wall becomes insufficient for integral movement, so each pipe of the double pipe and their attached windbreaks are separated. , a method of sequentially assembling it on the wall of a building is often adopted.

However, in such an assembly-type Furyu terminal, (i) it is necessary to fix the inner and outer pipes to the building wall or to each other from the outside of the building wall, which requires time and effort for installation.

(ii) Since a casing is placed to cover the inner surface of the hole in the building wall for protection and waterproofing, there will essentially be a triple wall after the double pipe is installed; (iii) In order to accept the triple-pipe structure, it is necessary to make a hole in the building wall that is larger than the double-pipe structure, which increases the labor involved in construction.As a result, the cost associated with installing the Furyu Terminal is not necessary. The problem was that it was even more expensive.

The present invention solves the problems of these conventional techniques,
A FRUI terminal that uses an assembly method that can be installed only from the inside of a building wall, eliminates wasted materials during installation, minimizes the building wall hole diameter, and has low manufacturing and installation costs overall. The purpose is to provide

Means for Solving the Problems The object of the present invention is to provide a fuel terminal for performing air intake and exhaust to a combustion device inside a wall of a building across the wall, the fuel terminal being provided in a through-hole provided in the wall. a cylindrical casing installed on the inner surface of the casing; an inner exhaust pipe having an outer diameter and a length that extends through the wall to form an intake passage between the inner surface of the casing; and an outer side of the wall of the casing. a support ring attached to the outer periphery of the inner pipe so that the inner pipe can be attached substantially concentrically to the opposite end thereof; and a support ring attached to the outer circumference of the inner pipe so that the inner pipe can be mounted substantially concentrically at the opposite end thereof; a support member mounted on the inner pipe to substantially concentrically support the inner pipe; and after the inner pipe is attached to the casing from the inner side of the wall by the support ring and the support member so as to penetrate the wall; an outer pipe surrounding the inner pipe, extending from the inner side of the wall to an end of the casing closer to the inner side of the wall, and airtightly coupled to a passage between the inner pipe and the casing; The casing has a flange formed by bending an edge of the outer side of the wall radially inward, and the support ring includes an annular portion substantially concentrically attached to the outside of the inner pipe, and the annular portion. The flange has a rib extending in the axial direction of the annular portion on the outer circumferential surface, and an abutment member provided on the radially outer side of the annular portion, and the flange has an inner diameter through which the annular portion is passed, and the rib extends in the axial direction of the annular portion. The rib includes a slot for passing through the flange in the axial direction, and the rib has a notch for passing the flange in the circumferential direction at a position where it engages with the flange, and cooperates with the flange by movement in the circumferential direction to form a bayonet joint. The contact member is provided at a position where the inner pipe comes into contact with the flange when the inner pipe is inserted into the casing from inside the wall and reaches a position where the notch engages with the flange. This is achieved by using the FURUYU Terminal, which is characterized by:

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 comprises a casing 1 made of any suitable material, for example plastic, which casing 1 is installed in an opening in the exterior wall of a building. The casing has a flange 2 formed by bending the outer edge of the building inward.
The flange 2 is provided with diametrically opposed slots 3. The slots 3 are arranged vertically to facilitate the removal of rainwater that has entered the casing. Inside the casing 1, an inner pipe 6 for discharging waste gas is arranged.
The inner pipe 6 has an outer diameter that forms a fresh air intake passage with the inner surface of the casing 1, and a length that extends through the outer wall of the building. A support ring 5 is attached to the end of the inner pipe 6 closer to the outside of the building wall. The support ring 5 includes an annular portion attached concentrically to the inner pipe and a rib 4 extending in the axial direction of the annular portion. The annular portion has a half-split structure, and these half halves are joined by pleating to form two ribs 4. The ribs are provided opposite each other in the diametrical direction of the annular portion. These two ribs 4 have a notch 7 that is slightly wider than the width of the flange 2.

After the casing has been inserted into the wall, the inner pipe 6 with the support ring 5 and the support fitting 22 is inserted into the casing from inside the building so as to slide the axial rib 4 through the slot 3. Ru.

These inner pipes 6 and the like are inserted through the wall until the notches 7 of the ribs line up with the flange 2. The support ring 5 includes an abutment member 16 that protrudes outward in the radial direction, and comes into contact with the flange 2 when the notch 7 reaches the position where it engages with the flange 2, thereby facilitating positioning during insertion. The pipe 6 is then rotated. As a result, the notch 7 engages with the flange 2, and the support ring 5 is fixed together with the inner pipe 6 in the inner and outer directions of the wall, forming a so-called bayonet joint and being attached to the casing 1.

The part of the inner pipe 6 closer to the wall is the support metal fitting 2.
2 is supported by contacting the casing 1,
The bayonet joint and the support fitting 22 hold the inner pipe 6 concentrically with the casing 1.

The flange 2 is manufactured to be airtight or to have a very small play between its inner diameter and the outer diameter of the annular portion of the support ring 5. This can prevent rainwater from entering the casing.

FIG. 1 shows the rear side 17 of the combustion device. The device is connected to an outer pipe 18 covered by a packing 19 of compressible material, such as neoprene foam. The outer pipe 18 is for connecting the intake passage between the casing 1 and the inner pipe 6 to the combustion device, and therefore has one end at the end of the casing 1 closer to the inner side of the wall and extends toward the inner side of the wall. It is fine as long as it extends. In this example, since the combustion device is installed in contact with a wall, the outer pipe 18 is a short ring-shaped pipe.

After the casing 1, inner pipe 6, etc. are fixed in the wall hole as described above, the combustion device is installed so that the exhaust duct 20 is connected to the inner pipe 6.
At that time, by positioning the ring-shaped outer pipe 18 inside the casing 1 and compressing the packing 19 by pressing the combustion device against the wall, the intake passage between the casing 1 and the inner pipe 6 is closed to the outer pipe 18.
It can be hermetically coupled to the inner passage. Based on this airtightness, even if rainwater enters through the gap between the flange 2 and the support ring 5, the rainwater is prevented from further entering the building.

In this way, the Furyu Terminal can be easily installed only from inside the room without having to work from outside the building.

Effects of the Invention As is clear from the above, according to the present invention, it is possible to provide a FRUI terminal for a combustion device that exhibits the following effects. That is, the inner pipe has a support ring attached to its outer periphery, and is attached to the flange of the casing by the support ring. This installation involves passing the axial rib on the outer peripheral surface of the annular part of the support ring through the slot of the flange, advancing the abutting member until it abuts the flange, and passing the rib through the notch provided in the rib at the abutting position. This is achieved by movement on the flange, that is, by advancing the inner pipe in the axial direction within the casing and then rotating it around the axis. Therefore, by attaching the inner pipe from the indoor side, it is possible to penetrate the casing and easily extend it out of the wall with reliable support in the axial and radial directions. Other members such as the outer pipe can be easily attached from the indoor side by attaching them to the inner pipe in advance or attaching them after this. Therefore, the entire Furyu terminal can be easily and reliably attached from the indoor side.

Further, the inner pipe is held concentrically with the casing by the support ring and the support member, and the space between the inner pipe and the casing is used as an intake passage, so the outer pipe is arranged so that the intake passage can be connected to the combustion device. It is sufficient that the casing extends from the inside of the wall to the end of the casing on the inside of the wall. As a result, the FURIU Terminal after installation has essentially only a double pipe wall inside the building wall hole, which is a waste of material compared to the conventional case, which had essentially three pipe walls. There is no
Moreover, the wall hole diameter can be kept to a minimum.

In this way, the assembly method reduces waste of manufacturing materials, makes the minimum necessary holes in the building wall, and can be easily installed only from the inside of the building, resulting in lower manufacturing and installation costs overall. Free terminals can be provided.
In addition, the airtight connection of the outside pipes prevents rainwater from entering the building.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a FRUI terminal according to an embodiment of the present invention. 1... Casing, 2... Flange, 3... Slot, 4... Rib, 5... Support ring, 6... Inner pipe, 7
... Notch, 16... Contact member, 18... Ring-shaped outer pipe, 19... Packing.

Claims (1)

[Scope of Claims] 1. A Furyu terminal for performing air intake and exhaust for a combustion device inside a wall of a building across the wall, comprising: a cylindrical casing installed in a through hole provided in the wall; an exhaust inner pipe having an outer diameter and a length that extends through the wall to form an intake passage between the inner surface of the casing and the inner pipe at an end of the casing closer to the outer side of the wall; a support ring attached to the outer periphery of the inner pipe so that the inner pipe can be mounted substantially concentrically; and a support ring that supports the inner pipe substantially concentrically within the casing at a position closer to the inner side of the wall than the support ring. a support member attached to the inner pipe, and after the inner pipe is attached to the casing from inside the wall by the support ring and the support member so as to penetrate the wall, the inner pipe is surrounded and the support member is attached to the inner pipe; an outer pipe extending from the inner side of the wall to an end of the casing closer to the inner side of the wall and hermetically coupled to a passage between the inner pipe and the casing, the casing having an end closer to the outer side of the wall; The support ring has a flange formed by bending an edge radially inward, and the support ring includes an annular portion mounted substantially concentrically on the outside of the inner pipe, and an annular portion mounted on an outer peripheral surface of the annular portion. The flange has a rib extending in the axial direction and an abutment member provided on the radially outer side of the annular portion, and the flange has an inner diameter through which the annular portion is passed, and a slot through which the rib is passed in the axial direction. , the rib has a notch through which the flange passes in the circumferential direction at a position where it engages with the flange, and cooperates with the flange to form a bayonet joint by movement in the circumferential direction; The abutment member is provided at a position where it abuts the flange when the inner pipe is inserted into the casing from inside the wall and reaches a position where the notch engages with the flange. Free You Terminal. 2. The Friu terminal according to claim 1, wherein the inner diameter of the flange is approximately equal to the outer diameter of the annular portion of the support ring. 3. The outer pipe is adapted to be retained on the wall by attaching to the inner surface of the wall an outward flange extending radially outwardly from the outer pipe. Furyu Terminal as described in Section. 4. The Free-U terminal according to any one of claims 1 to 3, wherein the flange is provided with two slots arranged opposite to each other in the diametrical direction of the flange. 5. A compressible seal is provided between the outward flange and the wall for airtightly coupling the outer pipe to the passageway between the inner pipe and the casing. Furyu Terminal. 6. Claims 1 to 5, further comprising a compressible seal between the outer pipe and the casing to airtightly connect the outer pipe to the passage between the inner pipe and the casing.
Furyu terminal described in any of the paragraphs.