JPH10205746A - Intake and exhaust device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intake and exhaust device for an oil fired hot-water boiler in which rainwater is prevented from getting into an air supply hole of an outer pipe and into the lower end thereof, on the outside of which an air supply pipe is provided, and which can be miniaturized. SOLUTION: In the device, an exhaust pipe 2 having an exhaust port (e) at its upper part, an air supply pipe 3 which is provided nearly concentrically with the outside of an exhaust pipe 2 and has an air supply port (d) at its upper part, and an outer pipe 4, which is provided nearly concentrically with the outside of the pipe 3 and has on its outer periphery an air supply hole 4b corresponding to the port (d) and an exhaust hole 4c corresponding to the port (e) and in which a partition body 4a to vertically separate the port (e) and port (d) is provided, are provided, and an air supply passage A is formed from the pipe 4 and the pipe 3. In this case, in the passage A, a water sealing plate 5 and an auxiliary water sealing plate 6 are provided to prevent rainwater flowing toward the port (d) from getting into the hole 4b of the pipe 4 and the lower end of the pipe 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air supply / exhaust device such as an oil-cooked hot water boiler, and more specifically, rainwater from an air supply hole and a lower end of an outer cylinder facing an air supply cylinder enters an air supply port. The present invention relates to a structure that can be prevented from becoming smaller and can be reduced in size.

[0002]

2. Description of the Related Art As shown in FIG. 2, for example, a conventional air supply / exhaust device used for an oil-cooked hot water boiler and the like has an exhaust pipe 2 having an exhaust port e at an upper portion thereof and a substantially concentric outer pipe. A supply cylinder 3 having an air supply port d at an upper portion thereof, and an air supply hole 4b and an exhaust port provided substantially concentrically outside the air supply cylinder 3 and corresponding to the air supply port d on an outer peripheral surface. e, and an outer cylinder 4 provided with a partition body 4a for vertically partitioning the exhaust port e and the air supply port d.

However, during rainfall, rainwater that has entered through the air supply hole 4b or rainwater that has bounced back and has entered through the lower end of the outer cylinder 4 after falling, as indicated by an arrow c 'indicating the path of rainwater intrusion, is supplied. In order to prevent the air from flowing into the upper air supply port d of the air supply cylinder 3 together with the air flow, it is difficult to reduce the dimension b ′ that can secure the height of the air supply cylinder 3. It has been difficult to reduce the height dimension a 'of the first device to reduce its size.

[0004]

SUMMARY OF THE INVENTION In view of the above problems, the present invention prevents rainwater from entering the air supply port from the air supply hole and the lower end of the outer cylinder facing the air supply cylinder, and reduces the size of the outer cylinder. It is an object of the present invention to provide an air supply / exhaust device for an oil-cooked hot water boiler or the like, which can be used for the production.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an exhaust pipe having an exhaust port at an upper part, and a supply pipe provided substantially concentrically outside the exhaust pipe and having an air supply port at an upper part. A cylinder and an exhaust hole corresponding to the intake port and an exhaust port corresponding to the exhaust port are provided substantially concentrically outside the supply cylinder, and the exhaust port and the exhaust port are vertically moved. An outer cylinder provided with a partitioning body, and an air supply / exhaust device comprising an air supply path formed of the outer cylinder and the air supply cylinder, wherein air is supplied to the air supply path from an air supply hole and a lower end of the outer cylinder. The structure is provided with a water shield to prevent rainwater from entering the mouth.

[0006] Further, the water shield is constituted by a water shield plate provided on the inner peripheral surface of the outer cylinder above the air supply hole.

[0007] Further, the water shield plate is constituted by a horizontal portion and a vertical portion whose tip is suspended.

Further, the water impervious body is constituted by an auxiliary water impervious plate provided on the outer peripheral surface of the air supply cylinder.

Further, the auxiliary impermeable plate is constituted by a horizontal piece provided above a horizontal portion of the impermeable plate.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS With the above construction, rainwater from the air supply hole and the lower end of the outer cylinder facing the air supply cylinder is prevented from entering the air supply port, and downsizing can be achieved. A supply / exhaust device for an oil-cooked hot water boiler or the like as described above.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below in detail with reference to the drawings. In FIG. 1, reference numeral 1 denotes a supply / exhaust device main body used for an oil-cooked hot water boiler or the like. The main body 1 is provided with an exhaust tube 2 having an exhaust port e at an upper part and substantially concentrically outside the exhaust tube 2. , An air supply cylinder 3 having an air supply port d at the top,
An air supply hole 4b corresponding to the air supply port d and an air exhaust hole 4c corresponding to the air exhaust port e are provided on the outer peripheral surface of the air supply cylinder 3 substantially concentrically. An outer cylinder 4 having a partition 4a for vertically dividing the mouth d;
And an air supply path A constituted by the air supply cylinder 3.

In the air supply passage A, an air supply hole 4b of the outer cylinder 4 is provided.
And a water shield, which will be described later, for preventing intrusion of rainwater from the lower end toward the air supply port d.
Thereby, the rainwater that has entered from the air supply hole 4b or the rainwater that has bounced off after falling and has entered from the lower end of the outer cylinder 4 is
It can be prevented from entering the air supply port d at the upper part of the air supply cylinder 3 together with the air flow to be supplied, and the dimension b ′ that can secure the height of the air supply cylinder 3 can be reduced. Thus, the height a 'of the main body 1 is reduced, so that the size can be reduced.

A water shield for preventing rainwater from entering the air inlet d is provided on the inner peripheral surface of the outer cylinder 4 above the air inlet 4b. With this configuration, rainwater flowing toward the air supply port d can be effectively intercepted together with the air flow supplied from the air supply hole 4b.

Further, the water shield plate 5 is constituted by a horizontal portion and a vertical portion with its tip hanging down,
The structure makes it possible to more effectively block rainwater flowing toward the air supply port d together with the air flow supplied from the air supply hole 4b.

In addition, the water impervious body for preventing rainwater from entering the air supply port d is constituted by the auxiliary water impervious plate 6 provided on the outer peripheral surface of the air supply cylinder 3. In front of the air supply port d, the rainwater flowing toward the air supply port d together with the air flow supplied from the air supply hole 4b and the rainwater that rebounds after falling and enters from the lower end of the outer cylinder 4 are more effectively blocked. It has a structure that allows water. By providing the auxiliary water shield plate 6 and the water shield plate 5 in the air supply passage A, a sufficient water shield effect can be obtained.

Further, the auxiliary impermeable plate 6 is provided with the impermeable plate 5
With the configuration including the horizontal pieces provided above the horizontal portion, the structure allows the supplied airflow to pass smoothly, and at the same time, to sufficiently exhibit the water blocking effect.

With the above arrangement, as shown in FIG. 1, the provision of the water shield plate 5 and the auxiliary water shield plate 6 allows the rainwater that has entered the inside of the outer cylinder 4 to flow through the supply cylinder 3.
Can be effectively prevented from entering the air supply port d of the main body 1 because the height of the air supply cylinder 3 can be reduced.
And a supply / exhaust device, such as an oil-cooked hot water boiler, which can be reduced in size by reducing its height dimension a.

[0018]

As described above, according to the structure of the present invention, rainwater from the air supply hole and the lower end of the outer cylinder facing the air supply cylinder is prevented from entering the air supply port, and downsizing is achieved. It becomes an air supply / exhaust device such as an oil-cooked hot water boiler that can be measured.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a main part of a supply / exhaust device according to the present invention.

FIG. 2 is an explanatory view of a main part of a conventional air supply / exhaust device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air supply / exhaust device main body 2 Exhaust cylinder 3 Air supply cylinder 4 Outer cylinder 4a Air supply hole 4b Exhaust hole 5 Water shield plate 6 Auxiliary water shield plate A Air supply path a Height of main body b Height for accommodating air supply cylinder c Rainwater intrusion route d Air supply port e Exhaust port

Claims (5)

[Claims] 1. An exhaust cylinder having an exhaust port at an upper portion, a substantially concentrically provided outside the exhaust cylinder, a supply cylinder having a supply port at an upper portion, and substantially concentrically provided outside the same cylinder. And
An outer cylinder provided with an air inlet corresponding to the air inlet and an air outlet corresponding to the air outlet on an outer peripheral surface, and an outer cylinder having a partition body for vertically dividing the air outlet and the air inlet; In the air supply / exhaust device configured with an air supply cylinder and an air supply path, a water shield that prevents rainwater from entering the air supply port from an air supply hole and a lower end of the outer cylinder to the air supply port is provided in the air supply path. A supply / exhaust device characterized by the following. 2. The air supply / exhaust device according to claim 1, wherein the water shielding body is formed of a water shielding plate provided at an upper part of the air supply hole and on an inner peripheral surface of the outer cylinder. 3. The air supply / exhaust device according to claim 2, wherein the water shield plate comprises a horizontal portion and a vertical portion with a tip thereof suspended. 4. The water impermeable body comprises an auxiliary water impermeable plate provided on an outer peripheral surface of the air supply cylinder.
The air supply / exhaust device as described. 5. The air supply / exhaust device according to claim 2, wherein the auxiliary water shield plate is a horizontal piece provided above a horizontal portion of the water shield plate.