JPS6287760A - Combustion device - Google Patents

Abstract

PURPOSE:To prevent the reverse flow of condensed water as well as the generation of corrosion, abnormal combustion or the like due to dripping of condensed water by a method wherein a hopper is provided on the way of a condensed water pipe, connecting a receiving pan and a neutralizing unit, so as to be isolated from the condensed water pipe. CONSTITUTION:Condensed water, generated on the surface of an auxiliary heat exchanger 3, is retrieved by a receiving pan 8 and is guided to a condensed water pipe 9. In this case, a hopper 12 is provided on the way of the condensed water pipe 9 so as to be isolated from the condensed water pipe, therefor,e the condensed water is isolated from the receiving pan 8. The condensed water, received by the hopper 12, is guided to a neutralizing unit 10 and is neutralized, thereafter, is discharged to the outside of a machine through a water discharging pipe 11. An overflow port 13 is provided at the upper part of the hopper 12 and is connected to an overflow pipe 14. In case impurities or foreign materials are generated and mixed in the neutralizing unit 10 and the path of neutralizing process is blockaded, the condensed water, stagnated in the neutralizing unit 10, rises to the upper part of the hopper 12 and flows into the overflow port 13. The condensed water, flowing into the overflow port 13, is discharged to the outside of the machine through the overflow pipe 14.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a combustion apparatus equipped with a neutralization device for neutralizing condensed water generated in an auxiliary heat exchanger.

2. Description of the Related Art A conventional yuzu combustion apparatus has a structure as shown in FIG. That is, the combustion gas burned in the burner 1 passes through the main heat exchanger 2, the auxiliary heat exchanger 3, and the exhaust pipe 4, and is discharged to the outside of the machine by the combustion fan 5.

On the other hand, water enters from the water supply pipe 6 and reaches the auxiliary heat exchanger 3, where the latent heat in the combustion gas combusted in the burner 1 is recovered, and then heated in the main heat exchanger 2. ,
The hot water is supplied from the hot water supply pipe 7 to a hot water supply pipe (not shown).

Condensation and dead water generated on the surface of the auxiliary heat exchanger 3 are collected in a receiving tray 8.
The condensate is recovered and discharged to the outside of the machine via the condensate pipe 9, the neutralizer 10, and the drain pipe 11. Strongly acidic ions such as SO2''- and NO3- in the combustion gas are dissolved in this pseudo-condensed water, so that a neutralization process is carried out in the neutralization device 10.

Problems to be Solved by the Invention However, with the above configuration, if the combustion device is not used for a long period of time, the residual condensed water in the neutralization device 10 and the neutralizing agent may react and generate impurities. Alternatively, the peeled surface treatment agent of the auxiliary heat exchanger 3 may enter the neutralization device 10 and block the neutralization processing passage of the neutralization device 10.

As a result, the condensed water is not drained and overflows from the receiving tray 8 and drips onto the main heat exchanger 2 and burner 1, causing corrosion and abnormal combustion.

In view of the above problems, the present invention prevents the backflow of condensed water and prevents the occurrence of corrosion, abnormal combustion, etc. due to dripping of condensed water.

Means for Solving the Problems The technical means of the present invention for solving the above problems are as follows:
A hopper is provided in the middle of the condensate pipe that connects the receiving tray and the neutralization device by cutting off the edge of the condensate pipe.

For production The effect of this technical means is as follows.

That is, the condensed water collected in the tray passes through the condensed water pipe, is received by the hopper, and flows into the neutralization device. If the passage of the neutralizer is blocked, the condensed water will rise to the top of the hopper, but since it is separated from the condensed water pipe, it will not flow back into the receiving tray.

The condensed water that overflows from the top of the hopper is
It is discharged outside the machine through the overflow pipe from the two overflow ports.

As a result, even if the passage of the neutralizer is blocked, there will be no backflow to the receiving tray, and corrosion of the equipment and abnormal combustion due to condensed water under the layer can be prevented.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. Note that the same parts as in the above conventional example are given the same reference numerals, detailed explanations are omitted, and only different parts will be explained.

In FIG. 1, condensed water generated on the surface of the auxiliary heat exchanger 3 is collected in a receiving tray 8 and guided to a condensed water pipe 9.

Here, a hopper 12 is provided in the middle of the condensed water pipe 9 and separated from the condensing pipe, so that the condensed water is separated from the receiving tray 8.

The condensed water received by the flopper 12 is led to a neutralization device 10, where it is neutralized and discharged from the drain pipe 11 to the outside of the machine. At the top of the hopper 12 is an overflow port 1.
3 is provided and connected to the overflow pipe 14.

In the combustion apparatus configured in this way, if impurities or foreign matter are generated or mixed in the neutralization device 10 and block the neutralization processing passage, the condensed water that accumulates in the neutralization device 10 will be drained into the hopper 12. It rises to the top and flows into the overflow port 13. The condensed water flowing in from the overflow port 13 is discharged to the outside of the machine from the overflow pipe 14.

As described above, according to this embodiment, the inside of the neutralization device contains impurities,
Even if the system is clogged with foreign matter, condensed water will not flow back to the heat exchanger or burner, but will be discharged through the overflow pipe, making it easier to detect abnormalities at an early stage.

Effects of the Invention As described above, the present invention has a hole in the middle of the condensed water pipe, so even if the neutralization device is blocked by foreign matter in the condensed water, there will be no backflow or corrosion of the equipment due to dripping of the condensed water. This greatly helps improve safety by preventing abnormal combustion, and by checking the drainage of condensed water from the overflow pipe, early detection of abnormalities is possible.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of a combustion device according to an embodiment of the present invention, and FIG. 2 is a vertical cross-sectional view showing a conventional combustion device. 2...Main heat exchanger, 3...Auxiliary heat exchanger, 8...Saucer, 9...Condensed water pipe,
10... Neutralization device, 11... Drain pipe,
12... Hopper, 13... Overflow port, 14... Name of overflow management agent Patent attorney Satoshi Nakao (Male) and 1 other person
5 (NnQ廿1!″) Progress ℃ ゛ゝ

Claims (2)

[Claims] (1) A main heat exchanger, an auxiliary heat exchanger, a receiver for collecting condensed water generated in the auxiliary heat exchanger, and a neutralization device for neutralizing the condensed water, the receiver and the neutralization device A combustion device in which a hopper is provided in the middle of a condensate pipe that connects the condensate pipe. (2) The combustion device according to claim 1, wherein an overflow port is provided in the upper part of the hopper.