JPH0316487B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a condensed water hydration device that can be employed in a system for recovering exhaust heat of an internal combustion engine to obtain hot water.

(Prior art) Condensed water generated when heat is recovered from the exhaust gas of an internal combustion engine using an exhaust gas heat exchanger, etc. is highly acidic (PH3
~4), and if it is released outside as it is, it not only pollutes the environment, but also causes problems such as damage to concrete and oxidation of iron materials. Furthermore, the exhaust gas discharged together with the condensed water becomes a source of noise, which poses a problem in engine heat pump systems and the like used in areas with a large number of houses. Conventionally, as a countermeasure to this problem, condensed water generated by a heat exchanger that transfers heat from exhaust gas to water is stored in a room containing a neutralizing agent, and when the condensed water in the room reaches a certain level, it is discharged outside through an overflow pipe. A device designed to do this has already been developed by the applicant. However, in that case, the noise reduction effect is small because it is a one-room overflow system. Furthermore, since silencing and neutralization are carried out in separate containers, it is not compact and also increases the cost. Another drawback was that oxides produced by the neutralizer and condensed water floated around, clogging the overflow pipe.

(Objective of the Invention) An object of the present invention is to solve the above-mentioned problems of the conventional type and to provide a compact and inexpensive condensed water hydration device that has a large noise reduction effect.

(Structure of the Invention) The present invention comprises a first chamber into which exhaust gas containing condensed water from an internal combustion engine or the like is introduced, a second chamber communicating with the first chamber via a first overflow pipe, and a second chamber. A second overflow pipe communicating with the outside, and a neutralizing agent chamber surrounded by a porous wall and filled with a neutralizing agent in one or both of the first and second chambers. It is a Japanese device.

(Example) Fig. 1 is a structural diagram showing the locations where the condensed water hydration device according to the present invention is used, in which 1 is the engine, 2 is the exhaust gas heat exchanger, 3 is the muffler, and 4 is the condensed water hydration device according to the present invention. It is a device. The exhaust pipe 5 of the engine 1 is connected to the muffler 3 through a meandering pipe (not shown) in the heat exchanger 2, and is opened to the atmosphere from a tail pipe 6 of the muffler 3. The heat exchanger 2 includes a water outlet 7 and a hot water outlet 8, and the hot water outlet 8 is connected through a pipe to a faucet (both not shown) or other places where hot water is used. Condensed water outlets 9, 10 of heat exchanger 2 and muffler 3
are connected to the inlet pipe 13 of the condensed water hydration device 4 through pipes 11 and 12, respectively, and the inlet pipe 13
The condensed water introduced from the tank is neutralized and silencing in the device 4, and then discharged to the outside from a second overflow pipe 14, which will be described later.

In FIG. 2 showing the details of the device 4, the top-opening case 16 is divided into an upper first chamber 18 and a lower second chamber 19 by a partition plate 17 at an intermediate height, and the upper opening is Upper lid 2 via packing 20
1 is blocked. The inlet pipe 13 is liquid-tightly fitted into the hole of the upper lid 21 and fixed, and when the lid 21 is attached to the case 16, the lower end of the inlet pipe 13 opens to the bottom of the first chamber 18. A first overflow pipe 22 is fitted and fixed in a liquid-tight manner into the central hole of the partition plate 17, and the upper end of the pipe 22 is connected to the upper end of the first chamber 18, and the lower end is connected to the lower end of the second chamber 19. It's open. A porous inner cylinder 23 surrounding the inlet pipe 13 and the first overflow pipe 22 is formed of a wire mesh, perforated iron plate, or other corrosion-resistant perforated plate, and is arranged in the first chamber 18 concentrically with the case 16, The lower edge is the partition plate 1
7, and its upper end protrudes upward from the first overflow pipe 22. A neutralizing agent chamber 24 formed on the outside of the porous inner cylinder 23 is filled with a neutralizing agent 25 such as magnesium pieces, and the neutralizing agent 25 penetrates into the neutralizing agent chamber 24 through the porous inner cylinder 23. It is immersed in condensed water 18'. The diameter of the pores in the porous inner cylinder 23 is determined to such an extent that magnesium oxide and other oxides generated within the neutralizing agent chamber 24 do not flow out into the porous inner cylinder 23 .

The second overflow pipe 14 is liquid-tightly fitted into a hole drilled in the side wall of the case 16, with one end open at the upper end of the second chamber 19, and the other end either directly exposed to the atmosphere or discharged. connected to a pipe. 19' is condensed water in the second chamber 19.

The pressure inside the heat exchanger 2 and muffler 3 is supplied together with the exhaust gas from the inlet pipe 13 together with condensed water.
When the water 8 becomes full, it passes through the first overflow pipe 22 and accumulates in the second chamber 19, and when the inside of the second chamber 19 becomes full, it passes through the second overflow pipe 14 and is discharged to the outside. Further, when the pressurized pulsating exhaust gas enters the first chamber 18, it rises in the form of bubbles in the condensed water 18', passes through the first overflow pipe 22, enters the second chamber 19, and enters the condensed water 19. The liquid rises in the form of bubbles and exits through the second overflow pipe 14 to the outside. Although the condensed water 18' is strongly acidic,
It enters the neutralizing agent chamber 24 through the porous inner cylinder 23, reacts with the neutralizing agent 25, and is neutralized. The oxides generated in the neutralizer chamber 24 are blocked by the porous inner cylinder 23 and do not flow out to the first overflow pipe 22 side. The consumed neutralizer 25 can be replaced by opening the upper lid 21.

(Effects of the Invention) According to the present invention, the two-chamber overflow system is adopted, so that the silencing effect is increased. Also, case 16 with one silencing and one neutralization
Since the process is carried out within the unit, the device 4 can be made compact and the manufacturing cost can be reduced. The neutralizing agent 25 is contained in a neutralizing agent chamber 2 partitioned by a porous wall made of a porous inner cylinder 23.
4, there is no fear that oxides produced by the neutralizing agent 25 and condensed water will float out to the first overflow pipe 22 side, and clogging of the first overflow pipe 14 is prevented. This increases the inspection and maintenance period for the device and makes handling easier.

(Another Embodiment) FIG. 3 shows a double-structured device, and the same reference numerals as those in FIG. 2 indicate corresponding parts. In FIG. 3, a concentric cylindrical diaphragm 28 is provided inside the case 16, a first chamber 18 is formed on the outside of the diaphragm 28, and a second chamber 19 is formed on the inside. A neutralizing agent chamber 24 is formed by the porous inner cylinder 23 . The upper end of the inverted L-shaped communication pipe 29 (first overflow pipe) connecting the first chamber 18 and the second chamber 19 is connected to the partition plate 2.
8 and the hole of the porous inner cylinder 23 in a liquid-tight manner.
The lower end opens to the bottom of the second chamber 19 .

FIG. 4 shows a structure in which the first chamber 18 and the second chamber 19 are arranged side by side on the left and right, and 30 is a fixed lid of the first chamber 18.

The operation of the apparatus shown in FIGS. 3 and 4 is similar to that of the vertical type shown in FIG.

When carrying out the present invention, the neutralizing agent chamber 24 may be provided in both the first and second chambers. In addition, the case 16, various pipes 13, 22, 14, partition plate 17, porous inner tube 23, etc. are made of contact-resistant metal, resin, etc.
It may be formed from a light alloy or the like.

[Brief explanation of drawings]

FIG. 1 is a schematic side view showing the location of use of the device according to the present invention, FIG. 2 is an enlarged vertical sectional view of the condensed water hydration device in FIG. 1, and FIGS. 3 and 4 are for showing another embodiment. This is a drawing corresponding to FIG. 2 of FIG. 14... Second overflow pipe, 18... First chamber, 19... Second chamber, 22... First overflow pipe, 23... Porous inner cylinder (porous wall), 24... Neutralizer chamber , 25...neutralizing agent.

Claims (1)

[Claims] 1. A first chamber into which exhaust gas containing condensed moisture from an internal combustion engine is introduced, a second chamber communicating with the first chamber via a first overflow pipe, and a second chamber connected to the outside. a second overflow pipe communicating with the condensed water, and a neutralizing agent chamber surrounded by a porous wall and filled with a neutralizing agent is provided in one or both of the first and second chambers. Device. 2. The condensed water according to claim 1, wherein the overflow pipe and the neutralizer chamber are separated by a porous wall, and the porous wall has fine pores that prevent the outflow of oxides generated in the neutralizer chamber. Japanese equipment. 3. The condensed water hydration device according to claim 1, wherein the first and second chambers are arranged one above the other. 4. The condensed water hydration device according to claim 1, wherein the first and second chambers are arranged in a double manner. 5. The condensed water hydration device according to claim 1, wherein the first and second chambers are arranged on the left and right sides.