JPS6349646Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement in which the exhaust gas pipe led outdoors from an internal combustor such as a hot-air heater or gas water heater is equipped with a device for discharging the condensate generated inside the pipe. It is.

If you increase the heat exchange efficiency with a warm air heater or gas water heater installed indoors, the temperature of the combustion exhaust gas that passes through the exhaust gas pipe led outdoors will decrease by that amount, and more condensate will be generated in the exhaust gas pipe. If this accumulates in a specific part of the exhaust gas pipe, problems such as poor combustion or corrosion of the exhaust gas pipe will occur. For this reason, the exhaust gas pipe is provided with a discharge device for the generated condensate.

FIG. 1 shows a conventional drain discharge device provided for the above purpose installed in an indoor warm air heater. In this figure, 1 is a blower for indoor warm air circulation, 2 is a heat exchanger for heating equipped with combustion equipment, 3 is a drain pot, and 4 is an exhaust gas pipe led outdoors. It is connected to an exhaust connection pipe 5 from an internal combustion appliance via an airtight O-ring 6. Reference numeral 7 denotes a stainless steel drain outlet pipe branched from the middle of the exhaust gas pipe 4, and in order to prevent combustion exhaust gas from leaking indoors, a U-shaped trap is formed in the middle of the pipe to prevent drain water from collecting in this part. Water sealed at 9.

In the above configuration, the combustion high-temperature exhaust gas generated in the heating operation by the heat exchanger 2 is cooled by the hot air circulation blower 1, and drain water 9 is generated in the exhaust gas pipe 4 during exhaustion. 9 drips into the drain pot 3 through a trap in a drain outlet pipe 7 branched from the exhaust gas pipe 4.

However, in the drain discharge device having the above structure, it is necessary to bend the drain pipe 7 into a U-shape to form a trap, and the trap requires a large space for installation. It had the following drawbacks.

On the other hand, in the conventional drain discharge device shown in Fig. 2, the drain outlet pipe 8 can be a straight pipe, but the lower end is constantly kept immersed in drain water 9, and the drain pot to store this water is required. In the case shown in Fig. 2, if the amount of drain water 9 is insufficient or if the drain water 9 evaporates, a trap will not be formed and the combustion exhaust gas will leak indoors. Was.

This invention was aimed at solving the above-mentioned drawbacks of the conventional method.It uses a straight pipe as the drain outlet pipe, and the lower end of the pipe is used to constantly contain the drain water discharged into the drain pot. However, by releasing the water-containing material filled into the drain pot whose evaporation is suppressed, this water-containing material forms a trap.

That is, FIG. 3 shows an embodiment of this invention, and in the figure, 1 to 6 are the same as those shown in FIGS. 1 and 2, but in this invention, the drain outlet pipe 8 is A drain generation/collection section 4a is formed at the relevant point of the branched exhaust gas pipe 4, and the drain pot 3 is filled with a water-containing material 10 made of, for example, spongy glass wool, so that the drain can be led out inside the drain pot 3. This is characterized in that the lower end of the tube 8 is open.

Therefore, in the above structure, the drain water 9 discharged through the drain outlet pipe 8 collects in the drain pot 3 and forms a trap in this part as in the conventional one, but at this time, the drain water 9 discharged water 9
Even if the amount of water decreases, the action of the spongy water-containing material 10 prevents the evaporation of the drain water 9 that forms the trap, keeping the trap effective for a long time and reducing the leakage of combustion exhaust gas into the room. .

Furthermore, even if there is no drainage for a long time and the inside of the drain pot 3 happens to become dry, the spongy water-containing material 10 itself prevents combustion exhaust gas from directly leaking indoors. This means that it can be suppressed. In addition, it is clear that the construction of the drain outlet pipe 8 is simpler than the conventional one shown in FIG.

As explained above, this idea has a simple structure in which the drain pot is filled with a spongy water-containing material, and the lower end of the drain pipe is opened inside the water-containing material to prevent combustion exhaust gas from leaking indoors. This has the effect that it can be prevented more reliably.

[Brief explanation of the drawing]

1 and 2 are sectional views of essential parts of a hot air heater employing a conventional drain discharge device, and FIG. 3 is a sectional view of essential parts showing an embodiment of this invention. In the figure, 3 is the drain pot, 4 is the exhaust gas pipe, 4a
is a drain generation and collection part, 8 is a drain outlet pipe, 1
0 is a water-containing material. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A drain generation/collection section is provided in the middle of a combustion exhaust gas pipe led outdoors, and the lower end of a straight drain outlet pipe branched from this drain generation/collection section. A drain discharge device for a combustor, characterized in that the drain pot is released into a spongy water-containing material filled in a drain pot. (2) The drain discharge device for a combustor according to claim (1), wherein the water-containing material filled in the drain pot is composed of a spongy condensate of glass wool.