JPH0419312Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a supply/exhaust device applied to gas water heaters, bathtubs, and other combustors.

(Prior Art) Conventionally, as shown in FIG.
It is known that the supply cylinder b and exhaust pipe c of a gas water heater a are fitted and connected to the air supply connection pipe f and the exhaust connection pipe g of a supply/exhaust top e attached to a wall d, respectively.

(Problems to be solved by the invention) However, in the above-mentioned conventional method, the lengths of the air supply connection tube f and the exhaust connection tube g are made equal;
According to this, the supply cylinder b and the exhaust cylinder c must be fitted and connected to both the connecting cylinders f and g at the same time,
There was an inconvenience that the fitting work was difficult and time consuming.

(Means for Solving the Problems) The present invention is intended to provide a device that eliminates the above-mentioned disadvantages, and includes a supply/exhaust top at the tip of the supply cylinder and exhaust pipe of the combustor. - In a supply/exhaust device that connects an air supply connection tube and an exhaust connection tube that protrude from an air supply box that constitutes an exhaust top, the tips of the supply tube and exhaust tube are substantially aligned, and the tips of the exhaust tube protrude from the air supply box. The length of the exhaust connecting pipe is made longer than the length of the air supply connecting pipe protruding from the air supply box.

(Function) In the supply/exhaust device having the above configuration, first fit the exhaust pipe into the tip of the exhaust connection pipe, and then, while pushing the exhaust pipe into the exhaust connection pipe, fit the exhaust pipe into the tip of the air supply connection pipe. Fit the supply cylinder and push the supply cylinder and exhaust pipe further into both connecting pipes to complete the connection. In this case, since the exhaust pipe is fitted into the exhaust connection pipe first, there is nothing that will get in the way when fitting the supply cylinder into the air supply connection pipe later, and therefore the air supply connection pipe and exhaust connection between the supply cylinder and the exhaust pipe are The fitting work into the cylinder becomes extremely easy. Moreover, the fitting length between the exhaust connection pipe and the exhaust pipe can be increased.

(Example) Next, an example in which the present invention is applied to an indoor gas water heater will be described.

In FIGS. 1 to 3, 1 is a gas water heater equipped with a gas burner (not shown) and a heat exchanger heated by the burner, and the upper surface thereof is bent toward a wall 2. The base ends of the supply cylinder 3 and the exhaust pipe 4 are connected. Reference numeral 5 indicates a supply/exhaust top attached to the wall 2, and the supply/exhaust top 5 includes an air supply box 8 installed inside the wall 2 and an air supply box 8 that protrudes inward from the inner surface of the air supply box 8. Air supply connection tube 6 and exhaust connection tube 7
A top inner cylinder 9 integrally connected to the outer end of the exhaust connection cylinder 7 and a top outer cylinder 10 connected to the air supply connection cylinder 6 via the air supply box 8 are formed into an inner and outer double pipe. The length of the exhaust connection pipe 7 which is arranged outside the wall 2 and projects from the air supply box 8 is made longer than the length of the air supply connection pipe 6 which projects from the air supply box 8. The air supply connection tube 6 and the exhaust connection tube 7 are arranged such that the air supply connection tube 6 is located below the exhaust connection tube 7.

Further, the tips of the supply cylinder 3 and the exhaust pipe 4 are made to substantially coincide with each other.

The tips of the supply cylinder 3 and the exhaust pipe 4 are connected by fitting into the supply connection pipe 6 and the exhaust connection pipe 7, respectively, and the order of connection is as follows: Fit cylinder 4, then fit cylinder 3.

In the above-mentioned embodiment, the supply cylinder 3 and the exhaust pipe 4, which were prepared separately from the gas water heater 1, were connected to the air supply connection pipe 6 and the exhaust connection pipe 7 of the supply/exhaust top 5. As shown in the figure, the supply cylinder 3 and exhaust pipe 4 protruding from the side surface of the gas water heater 1 may be directly fitted into the air supply connection pipe 6 and the exhaust connection pipe 7 and connected.
Moreover, the fitting length between the exhaust connection tube 7 and the exhaust tube 4 can be made larger than that between the air supply connection tube 6 and the supply tube 3, thereby improving the sealing performance on the exhaust side where it is a problem if exhaust gas leaks. I can do it.

(Effect of the invention) As described above, according to the present invention, the tips of the supply cylinder and the exhaust pipe are made to substantially coincide with each other, and the length of the exhaust connection pipe is made longer than the length of the air supply connection pipe, so that the exhaust pipe is connected to the exhaust pipe. It is possible to fit the supply cylinder into the connection pipe, and then fit the supply cylinder into the supply connection pipe, and because the lengths of the supply connection pipe and the exhaust connection pipe are equal, the supply cylinder and exhaust pipe can be connected to the supply connection pipe and the exhaust pipe. The fitting work is extremely simple compared to the conventional method, which requires fitting and connecting to the connecting tube at the same time, and the fitting length between the exhaust connecting tube and the exhaust tube can be increased, making it easier to connect the exhaust tube. This has the effect of improving sealing performance.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of the present invention applied to a gas water heater, Fig. 2 is an exploded perspective view thereof, Fig. 3 is a cut-away side view of the main parts, and Fig. 4 is a perspective view of the present invention. FIG. 5 is a perspective view of another embodiment, and FIG. 5 is an explanatory diagram of a conventional example. 1... Gas water heater (combustor), 2... Wall, 3...
...supply cylinder, 4...exhaust pipe, 5...supply/exhaust top, 6...air supply connection pipe, 7...exhaust connection pipe.

Claims (1)

[Scope of utility model registration request] A supply/exhaust device that connects a supply/exhaust top to the tips of a supply cylinder and an exhaust pipe of a combustor with an air supply connection pipe and an exhaust connection pipe that protrude from an air supply box that constitutes the supply/exhaust top. , wherein the tips of the supply cylinder and the exhaust pipe are substantially aligned, and the length of the exhaust connection pipe protruding from the air supply box is longer than the length of the air supply connection pipe protruding from the air supply box. Supply/exhaust equipment.