JPH03271614A - Split type intake/exhaust cylinder - Google Patents

Abstract

PURPOSE:To improve safety by suitably connecting an outside of a through hole to the inside of the hole, then inserting it from the inside into a through hole opened at a wall, and then mounting a hood at the outside. CONSTITUTION:A lateral through hole 13 is opened at a wall W, and an oblique flange 14 is mounted on a wall at the inside of the hole 13. Then, an outside 4 of the hole 13 is engaged to be connected to the inside 3 connected to a sealed burner, the entire length is extended to the longest state, inserted from the inside into the hole 13, then an oblique flange 14 is mounted similarly to the inside from the outside, a hood 7 is threaded at the outside, the screw engaging depth of the side 4 to the side 3 is regulated so that the cylinder end of the hood 7 is brought into contact with the flange 14. Since the side 3 is connected to the side 4 out of the hole 13 before mounting in this intake/exhaust cylinder, the confirmation of the connecting state is facilitated. Accordingly, intake and exhaust gas short-circuit, invasion of combustion waste gas into a room are eliminated to enhance its safety.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a split air supply and exhaust pipe as a terminal component of an air supply and exhaust system of a closed combustion machine.

[Prior Art] FIGS. 6 and 7 show a conventional air supply and exhaust pipe disclosed in, for example, Japanese Utility Model Application Publication No. 19613/1983. That is,
It consists of an inner cylinder 1 and an outer cylinder 2 surrounding it, and an indoor part 3 and an outdoor part 4, in which the inside of the inner cylinder 1 is configured as an exhaust passage and the inside of the outer cylinder 2 is configured as an air supply passage, are connected. It has a series of double tube structures. The outdoor side part 4 and the indoor side part 3 are connected by screw fitting of their outer cylinders 2, and the inner cylinders 1 are connected by fitting. The outdoor side inner cylinder end of the outdoor side part 4 is closed at a position protruding from the outer cylinder 2 end, and an exhaust hole 5 is opened on the outer periphery near the end. An outer hood 16 is fixed to the outer periphery of the inner cylinder 1 on the side from the exhaust hole 5. The outer hood 16 is formed in the shape of a disk curved toward the wall surface, and bulges out in the radial direction like a flange at the end of the inner cylinder 1. The outer cylinder 2 end of the outdoor part 4 is left open, and the outer hood 1 is attached to the end.
A disk-shaped inner hood 17 is fixed to the inner hood 17 at a distance from the inner hood 6 . Note that a connection structure 6 for connecting to a closed combustion machine is provided at the base of the indoor portion 3.

The supply and exhaust pipe having the above configuration is attached as follows. First, a horizontal through hole 13 is made in a wall W that partitions the indoor and outdoor areas, and an inclined flange 14 is attached to the wall surface on the indoor side of this through hole 13. The inclined flange 14 is a member for attaching the air supply and exhaust pipe in a downwardly inclined state, and is also attached to the wall surface on the outdoor side. Next, the indoor side portion 3 connected to the hermetic combustion machine is inserted into the through hole 13 from the indoor side. Subsequently, from the outdoor side to the indoor side, the outdoor side part 4 is inserted into the through hole 13 via the inclined flange 14, and the inner cylinder 1 end of the outdoor side part 4 is fitted into the inner cylinder 1 end of the indoor side part 3. Then, the two ends of the outer cylinder of the indoor part 3 and the two ends of the outer cylinder of the outdoor part 4 are fitted with screws, and the indoor part 3 and the outdoor part 4 are connected in the through hole 13 to form a series of supply lines. Use it as an exhaust stack. Combustion waste gas from the closed combustion machine passes through the inner cylinder and is exhausted from the exhaust hole 5 that opens outdoors, and combustion air is sucked into the outer cylinder 2 through the distance d between the outer hood 16 and the inner hood 17. It passes through the outer cylinder 2 surrounding the inner cylinder 1 and is supplied to the closed type combustor.

[Problems to be Solved by the Invention] In the above-described conventional air supply/exhaust pipe, the outdoor side portion 4 is inserted from the outdoor side into the indoor side portion 3 inserted into the through hole 13 from the indoor side.
Since the connection part between the two is inside the through hole 13, it is difficult to tell whether the connection is secure or not, and the connection may be improperly connected or disconnected and used. This includes issues that need to be resolved, such as problems such as exhaust short circuits and combustion waste gas entering the room.

This invention was made in order to solve such conventional problems, and aims to provide a highly safe split-type air supply and exhaust pipe that is almost never used in an inappropriately connected state. It is.

[Means for Solving the Problems] The supply and exhaust pipe according to the present invention includes an inner cylinder and an outer cylinder surrounding the inner cylinder, and the inside of the inner cylinder is configured as an exhaust passage, and the inside of the outer cylinder is configured as an air supply passage. In a system in which an indoor section and an outdoor section are connected to form a series of double pipes, an exhaust hole is provided at the outdoor end of the inner tube of the outdoor section; The outdoor end of the exhaust hole is opened by retracting it from the inner cylinder toward the wall, and a hood part that does not close the exhaust hole is removably attached to the outdoor end of the outer cylinder of the outdoor part.

Further, in another supply/exhaust pipe according to the present invention, the hood portion is screw-fitted to the outer cylinder of the outdoor side portion.

[Function] In the split-type air supply and exhaust pipe according to the present invention, after the outdoor side part is properly connected to the indoor side part, it can be inserted from the indoor side into a through hole drilled in the wall, and from the wall. The hood part can be reliably attached to the outdoor side portion extending to the outdoor side. Therefore, it is possible to prevent the indoor part and the outdoor part from being improperly connected.

Further, in another split-type air supply and exhaust pipe according to the present invention, the hood portion can be easily and reliably attached to the outer cylinder of the outdoor side portion by screw fitting.

[Embodiment] FIGS. 1 to 5 all show a split-type air supply and exhaust pipe as an embodiment of the present invention. First, the embodiment shown in FIGS. 1 to 3 will be described. This split-type air supply and exhaust pipe consists of an inner pipe 1 and an outer pipe 2 that encloses the inner pipe 1.
The bottom of the tank is divided into an indoor part 3 and an outdoor part 4, with the inside of the inner cylinder 2 serving as an exhaust passage and the inside of the outer cylinder 1 serving as an air supply passage. The outdoor side end of the inner cylinder 1 of the outdoor side portion 4 is closed, and an exhaust hole 5 is opened on the outer periphery of the end. The entire outer cylinder 2 of the outdoor side part 4 is formed into a threaded structure, and the end thereof is
It is opened at a position f & retracted from the inner cylinder 1 toward the wall W side.

The indoor part 3 has a connection structure 6 at its base for connecting to a closed combustion machine (not shown), and the outer cylinder 2 on the side connected to the outdoor part 4 is the outer cylinder of the outdoor part 4. A threaded structure is formed so that the two can be screwed together. Moreover, the inner cylinder 1 on the connection side with the outdoor side part 4 is connected to the outdoor side part 4.
It is configured such that the inner cylinder l can be fitted in an airtight state. The indoor side part 3 and the outdoor side part 4 are connected by screw fitting of the outer cylinders 2 and fitting of the inner cylinders 1 to each other, forming a series of double pipe structures, but the overall length is the same as that of both. It can be adjusted by adjusting the screwing depth.

A hood portion 7 is removably attached to the opposite end of the outdoor portion 4 having the above-described structure, which serves both of rainproofing and prevention of supply/exhaust short circuits. This hood part 7 is connected to the outer cylinder 2 of the outdoor part 4.
In this configuration, an umbrella-shaped hood 10 curved toward the connection side is provided at the end of a feed cylinder part 9, which is formed by integrally forming a cylinder part with a larger diameter than the mounting cylinder part 8 which can be screw-fitted to the end. Air supply holes 11 are provided on the outer periphery of the supply cylinder portion 9.

The center of the hood 10 is sunken diagonally, and the inner cylinder 1 is located in the center.
An inner cylinder fitting part 12 is formed to fit into the inner cylinder fitting part 12. Food 1
A portion surrounded by the diagonally depressed central portion of the air supply cylinder 0, the cylindrical portion of the supply cylinder portion 9, and the outer peripheral surface of the inner cylinder 1 constitutes an air supply chamber S that is open to the outside through an air supply hole 11. The hood part 7 is attached by screwing the mounting cylinder part 8 to the outer cylinder 2 of the outdoor part 4.

The supply and exhaust pipe having the above configuration is attached as follows. First, a horizontal through hole 13 is made in a wall W that partitions the indoor and outdoor areas, and an inclined flange 14 is attached to the wall surface on the indoor side of this through hole 13. The inclined flange 14 is a member for attaching the air supply and exhaust pipe in a downwardly inclined state, and is also attached to the wall surface on the outdoor side. Next, the outdoor side part 4 is screwed and connected to the indoor side part 3 connected to the closed type combustor, so that the entire length is in the maximum extended state, and the indoor side part 4 is inserted into the through hole 13 from the indoor side. Subsequently, attach the inclined flange 14 from the outdoor side in the same way as the indoor side, screw the hood part 7 on the outdoor side, adjust the screwing depth of the outdoor side part 4 to the indoor side part 3, and tighten the cylindrical part of the hood part 7. The end is brought into contact with the inclined flange 14. As a result, combustion waste gas from the closed combustion machine passes through the inner cylinder 1 and is exhausted from the exhaust hole 5 opened to the outside, and combustion air flows from the supply cylinder part 9 of the hood part 7 into the outer cylinder 2. It is sucked in, passes through the outer cylinder 2 surrounding the inner cylinder, and is supplied to the closed combustion machine. In this split-type air supply and exhaust pipe, the indoor part 3 and the outdoor part 4 can be connected in advance outside the through hole 13, and the connection status can be easily confirmed. This eliminates the possibility of problems such as supply/exhaust short circuits or combustion waste gas entering the room when used with improper connections or in a disconnected state, making it highly safe.

In the embodiment shown in FIGS. 4 and 5, a disk-shaped wall hood 8a is provided in the form of a flange on a mounting cylinder part 8 that is screwed into the outer cylinder 2 end of the outdoor part 4 of the hood part 7. The umbrella-shaped hood 10 of the above embodiment is opposed to the wall-side hood 8a by a support plate 15 at a predetermined interval.
A support plate 1 with several cylindrical parts for supplying air in the hood part 7
5, its installation and function are the same as in the previous embodiment.

[Effects of the Invention] As is clear from the above description of the embodiments, according to the split type air supply and exhaust pipe according to the present invention, the outdoor side portion is properly connected to the indoor side portion, and then the wall is opened. The hood can be inserted into the through hole from the indoor side, and the hood can be reliably attached to the outdoor side portion extending from the wall to the outdoor side. Therefore, the indoor part and the outdoor part will not be improperly connected, and there will be no supply/exhaust short circuit or intrusion of combustion waste gas into the room, improving safety.

Further, according to another split type air supply and exhaust pipe according to the present invention,
The hood part can be attached to the outer cylinder of the outdoor side part by screw fitting, and in particular, the attachment of the hood part is easy to operate and the attached state is highly stable.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing the configuration of a split air supply and exhaust pipe as an embodiment of the present invention in its installed state, Fig. 2 is a perspective view showing the hood section separately, and Fig. 3 is the same. An enlarged cross-sectional view showing the part with the hood attached;
Fig. 4 is a sectional view of the main part showing another embodiment, Fig. 5 is a sectional view taken along line V-V, Fig. 6 is a sectional view showing a conventional example, and Fig. 7 is a sectional view of the conventional outdoor side. In Figure 6, which is a front view showing the parts, l is the inner cylinder, 2 is the outer cylinder, 3 is the indoor side part, 4 is the outdoor side part, 7 is the hood part, 8 is the mounting cylinder part, 9 is the feed cylinder part, 10 is a hood, 13 is a through hole, and W is a wall. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (2)

[Claims] (1) Consisting of an inner cylinder and an outer cylinder surrounding it, the interior of the inner cylinder is an exhaust passage, and the inside of the outer cylinder is an air supply passage.The indoor part and the outdoor part are connected to form a series of In the double pipe structure, an exhaust hole is provided at the outdoor end of the inner cylinder of the outdoor side part, and the outdoor end of the outer cylinder of the outdoor side part is opened by retreating from the inner cylinder toward the wall. and a hood portion that does not close the exhaust hole is removably attached to the outdoor end of the outer cylinder of the outdoor side portion. (2) The split-type air supply and exhaust pipe according to claim 1, characterized in that the hood portion is screw-fitted to the outer cylinder of the outdoor side portion.