JP2548618B2 - Air supply / exhaust cylinder with hood - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a split type air supply / exhaust cylinder as a terminal component of an air supply / exhaust system of a closed combustion machine.

[Prior Art] FIGS. 6 and 7 show a conventional air supply / exhaust cylinder shown in, for example, Japanese Utility Model Laid-Open No. 60-19613. That is, an inner side portion 3 and an outer side portion 4 each of which is composed of an inner cylinder 1 and an outer cylinder 2 that encloses the inner cylinder 1 and the outer cylinder 2 are connected to an exhaust passage and an air supply passage, respectively. It has been made into a series of double pipe structures. The outdoor side portion 4 and the indoor side portion 3 are connected by screw fitting of the outer cylinders 2 thereof, and the inner cylinders 1 are connected to each other by fitting. The outdoor part 4 which allows the projection length of the wall to be adjusted to accommodate walls W of varying thickness.
The outdoor inner cylinder end is closed at a position projecting from the outer cylinder 2 end, and an exhaust hole 5 is formed in the outer periphery near the end. An outer hood 16 is fixed to the outer periphery of the inner cylinder 1 on the side closer to the exhaust hole 5. The outer hood 16 is formed in a disk shape curved toward the wall surface, and bulges like a flange in the radial direction at the end of the inner cylinder 1. An end of the outer cylinder 2 of the outdoor side portion 4 is opened as it is, and a disc-shaped inner hood 17 facing the outer hood 16 with a space therebetween is fixed to the end thereof. A connection structure 6 for connecting to the hermetic combustor is provided at the base of the indoor portion 3.

The air supply / exhaust cylinder having the above structure is attached as follows. First, a lateral through hole 13 is opened in a wall W that separates indoors and outdoors, and an inclined flange 14 is attached to the wall surface on the indoor side of the through hole 13. The inclined flange 14 is a member for attaching the air supply / 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 combustor is inserted into the through hole 13 from the indoor side. Subsequently, from the outdoor side to the indoor side through the inclined flange 14, the outdoor side portion 4
Through the through hole 13 and the inner cylinder 1 end of the indoor side portion 3 is fitted to the inner cylinder 1 end of the outdoor side portion 4, and the outer cylinder 2 end of the indoor side portion 3 and the outer cylinder 2 of the outdoor side portion 4 are fitted. The ends are screw-fitted to connect the indoor side part 3 and the outdoor side part 4 in the through hole 13 to form a series of air supply / exhaust pipes. Combustion waste gas from the closed type combustor passes through the inner cylinder 1 and is exhausted from an exhaust hole 5 that is opened to the outside. Combustion air enters the outer cylinder 2 from a distance d between the outer hood 16 and the inner hood 17. It is sucked and is supplied to the hermetic combustor through the inside of the outer cylinder 2 surrounding the inner cylinder 1.

[Problems to be Solved by the Invention] In the above-described conventional air supply / exhaust cylinder, from the indoor side to the indoor side portion 3 inserted into the through hole 13, from the outdoor side to the outdoor side portion 4.
Must be connected, and since the connecting part of both is in the through hole 13, it is not known whether it is in a solid connection state or not, and it is used with the connection state inadequate or dropped, It includes problems to be solved such as short circuit and combustion exhaust gas entering the room.

The present invention has been made in order to solve the above conventional problems, and an object thereof is to obtain a hood-equipped air supply / exhaust cylinder which is excellent in safety and assembling workability and has an excellent appearance.

[Means for Solving the Problem] A supply / exhaust cylinder with a hood according to the present invention is formed so as to be insertable from one side into a through hole provided in a wall that separates an indoor side from an outdoor side. A supply / exhaust cylinder having a double-cylinder structure in which an inner cylinder and an outer cylinder, each of which has an indoor side portion and an outdoor side portion that are fitted to each other in a length adjustable manner, are an exhaust cylinder and a supply cylinder, respectively, and the outdoor side portion. It has a mounting cylinder part to be mounted on the end of the outer cylinder and a supply cylinder part integrally formed with a diameter larger than the mounting cylinder part and having an air supply hole formed on the outer periphery, and is depressed at the center to fit into the inner cylinder. And a hood section having an inner cylinder fitting section for maintaining airtightness between the cylinder and the outer cylinder and having a hood projecting radially from the end side of the cylinder supply section.

[Operation] In the air supply / exhaust cylinder with a hood according to the present invention, after the outdoor side portion is properly connected to the indoor side portion, the through hole formed in the wall can be inserted from one side. The hood portion can be surely attached to the outdoor side portion outside from the outside to the outdoor side.

[Embodiment] All of FIGS. 1 to 5 show a split type air supply / exhaust cylinder as one embodiment of the present invention. First, the embodiment shown in FIGS. 1 to 3 will be described. This split type air supply / exhaust cylinder is composed of an inner cylinder 1 and an outer cylinder 2 enclosing the inner cylinder 1, and the inside of the inner cylinder 2 serves as an exhaust passage and the outside. The inside of the cylinder 1 is divided into an indoor side portion 3 and an outdoor side portion 4 which are respectively formed in the air supply passage. Of the outdoor side portion 4, the outdoor side end of the inner cylinder 1 as the second inner cylinder is closed, and an exhaust hole 5 is opened on the outer circumference of the end portion. The entire outer cylinder 2 as the second outer cylinder of the outdoor portion 4 is formed into a screw structure, and its end is
It is opened at a position retracted from the inner cylinder 1 toward the wall W side. The indoor portion 3 has a hermetically sealed combustor (not shown) at the base thereof.
Having a connection structure 6 for connecting to the
The outer cylinder 2 on the connection side with is formed with a screw structure so that the outer cylinder 2 of the outdoor portion 4 can be screwed. Further, the inner cylinder 1 on the side of connection with the outdoor side portion 4 is configured so that the inner cylinder 1 of the outdoor side portion 4 can be fitted in an airtight state. The interior side portion 3 and the exterior side portion 4 are the outer cylinder 2
The inner cylinders 1 are connected together by screw fitting together and a series of double pipe structures are formed, and the entire length thereof can be adjusted by adjusting the screwing depth of both.

A hood portion 7 having both a rainproof function and an air supply / exhaust circuit short-circuit prevention function is detachably attached to the anti-connection end side of the outdoor side portion 4 having the above configuration. The hood portion 7 is provided at an end portion of a supply cylinder portion 9 in which a tubular portion having a larger diameter than that is integrally formed with a mounting tubular portion 8 that can be screw-fitted to an end of the outer cylinder 2 of the outdoor side portion 4, and is connected to a connecting side. The configuration is such that a curved umbrella-shaped hood 10 is provided. An air supply hole 11 is formed on the outer circumference of the cylinder portion 9. The center of the hood 10 is obliquely depressed, and an inner cylinder fitting portion 12 that fits into the inner cylinder 1 is formed at the center thereof. The portion of the hood 10 that is obliquely depressed, the portion surrounded by the cylinder portion of the cylinder supply portion 9 and the outer peripheral surface of the inner cylinder 1 constitutes a supply chamber S opened to the outside by a supply hole 11. The hood portion 7 is attached by screwing the mounting cylinder portion 8 to the outer cylinder 2 of the outdoor portion 4.

The air supply / exhaust cylinder having the above structure is attached as follows. First, a lateral through hole 13 is opened in a wall W that separates indoors and outdoors, and an inclined flange 14 is attached to the wall surface on the indoor side of the through hole 13. The inclined flange 14 is a member for attaching the intake / exhaust pipe in a downward inclined state, and is also attached to the wall surface on the outdoor side. Next, the outdoor side portion 4 is screwed and connected to the indoor side portion 3 connected to the hermetic combustor to bring the entire length to the maximum extension state,
The through hole 13 is inserted from the indoor side. Subsequently, the inclined flange 14 is attached from the outdoor side in the same manner as the indoor side, the hood portion 7 is screwed on the outdoor side, and the screwing depth of the outdoor side portion 4 to the indoor side portion 3 is adjusted to adjust the tubular portion of the hood portion 7. The end contacts the inclined flange 14. As a result, the combustion waste gas from the hermetic combustor is exhausted through the inner cylinder 1 from the exhaust hole 5 opened to the outside, and the combustion air is
It is sucked into the outer cylinder 2 from the cylinder feed portion 9 of the hood portion 7 and is supplied to the hermetic combustor through the outer cylinder 2 surrounding the inner cylinder 1. In this split type air supply / exhaust cylinder, the indoor side portion 3 and the outdoor side portion 4 can be connected to each other outside the through hole 13 before attachment, and the connection state can be easily confirmed. Is not suitable or is used in a dropped state, and troubles such as short-circuiting of supply / exhaust gas and inflow of combustion exhaust gas into the room are not caused, resulting in high safety.

In the embodiment shown in FIG. 4 and FIG. 5, a disk-shaped wall side hood 8a having a flange shape is attached to the mounting cylinder portion 8 which is screw-fitted to the end of the outer cylinder 2 of the outdoor portion 4 of the hood portion 7. The umbrella-shaped hood 10 in the above-described embodiment is provided integrally with the wall-side hood 8a by a supporting plate 15 at a predetermined interval, and the hood portion 7 has several tubular portions for air supply. Although it is composed of the support plate 15, its mounting method and function are the same as those in the above-described embodiments.

[Advantages of the Invention] As described above, according to the present invention, the through hole formed in the wall separating the indoor side and the outdoor side is formed so as to be insertable from one side, and the length can be adjusted in the through hole. A dual cylinder structure supply / exhaust cylinder having an inner cylinder and an outer cylinder, which are fitted to each other, as an exhaust cylinder and a supply cylinder, and an outer cylinder end of the outdoor part. Has a mounting cylinder portion and a supply cylinder portion integrally formed with a diameter larger than the mounting cylinder portion and having an air supply hole formed on the outer periphery, and is depressed at the center to fit the inner cylinder to form an inner cylinder and an outer cylinder. Since the inner cylinder fitting portion for maintaining the airtightness is formed and the hood portion having the hood protruding in the radial direction from the end side of the supply cylinder portion is provided, the fitting portion is in the through hole. , The length of the supply / exhaust cylinder should be as close as possible to the wall thickness without providing a mechanism for adjusting the length of the supply / exhaust cylinder on the outside of the wall. In addition to being able to reduce the protruding portion, the outdoor side portion and the indoor side portion forming the air supply / exhaust cylinder that penetrates the wall can be inserted from one direction of the wall after being fitted in advance.
Since the fitting state of the fitting portion can be confirmed in advance, the effect of improving aesthetics, safety, and workability can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view showing a structure of a supply / exhaust cylinder with a hood as an embodiment of the present invention in a mounted state, FIG. 2 is a perspective view showing the hood portion alone, and FIG. 3 is a view showing the same hood portion. An enlarged cross-sectional view showing the portion in an attached state in an enlarged manner,
FIG. 4 is a cross-sectional view of a main part showing another embodiment, FIG. 5 is a cross-sectional view taken along the line VV, FIG. 6 is a cross-sectional view showing a conventional example, and FIG. 7 is a conventional outdoor side. It is a front view which shows a part. In the figure, 1 is an inner cylinder, 2 is an outer cylinder, 3 is an indoor side portion, 4 is an outdoor side portion, 7 is a hood portion, 8 is a mounting tubular portion, 9
Is a cylinder portion, 10 is a hood, 13 is a through hole, and W is a wall.
The same reference numerals in the drawings indicate the same or corresponding parts.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-59-210211 (JP, A) JP-A-1-310222 (JP, A) Actually developed 52-54937 (JP, U)

Claims (1)

(57) [Claims] 1. An indoor side portion and an outdoor side, which are formed so as to be insertable from one side into a through hole provided in a wall which divides the indoor side and the outdoor side from each other and which are fitted in the through hole so as to be adjustable in length. A dual-cylinder air supply / exhaust cylinder having an inner cylinder and an outer cylinder each composed of a portion and an exhaust cylinder and a supply cylinder, a mounting cylinder part mounted on an outer cylinder end of the outdoor side part, and this mounting cylinder part. An inner cylinder fitting that has a larger and smaller integrally formed supply / disconnection cylinder part with an air supply hole formed on the outer periphery and is depressed at the center to fit into the inner cylinder to maintain airtightness between the inner cylinder and the outer cylinder. And a hood portion having a hood that is formed in a radial direction from the end portion side of the supply cylinder portion.