US1844034A - Exhaust gas treating device - Google Patents

Description

Feb. 9, 1932. J BER 1,844,034

EXHAUST GAS TREATING DEVICE Filed Sept. 12, 1950 2 Sheets-Sheet 1 dumma Feb. 9, 1932. J. A. DUBER EXHAUST GAS TREATING DEVICE Filed Sept. 12, 1950 2 Sheets-Sheet 2 w o \N o o o o o o o 0 o o O O n 10 0 Dim o o M0 0 omo om mogo em no nw o o o o o o o 0 o Q00 :0 O O O O I v IMHN PI| I1 II F |l|| |||I 1 l Patented Feb. 9, 1932 NlTED JOHN A. DUBER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-EIGHTH TO ANTHONY P. BUSSMAN, FIVE PER CENT TO RICHARD J. HIBBARD, FIVE PER CENT TO JACK G. LLEWELLYN, FIVE PER CENT TO ANTHONY GEORGE, TEN PER CENT TO LEWIS B. OSBORNE, AND TEEN PER CENT TO MARTIN MORLEY, ALL OF CHESTER,

PENNSYLVANIA EXHAUST GAS TREATING DEVICE Application filed September 12, 1930.

This invention relates to exhaust gas treating devices and, among other objects, aims to provide an improved mufiler havin provision for neutralizing or absorbing tie obnoxious and poisonous carbon monoxide in the gas before it is exhausted into the atmosphere. The idea is to provide a simple, efficient and compact device of this character which can be installed in place of an ordinary mufiler.

Other aims and advantages of the invention will appear in the specification when con sidered in connection with the accompanying drawings, wherein:

Fig. 1 is a side elevation of a device embodying the invention and showing it applied to an automobile chassis frame;

Fig. 2 is a longitudinal sectional view on an enlarged scale;

Figs. 3, 4 and 5 are sectional views taken on the lines 3-3, 4-4, and 55, respectively, of Fig. 2;

Fig. 6 is a top view showing a part in section;

Fig. 7 is a perspective view, parts being broken away; and

Fig. 8 is a perspective view of a baflie before it is attached to the device.

It has long since been recognized that the toxic carbon monoxide fumes in exhaust gases from automobile engines constitute a real menace to public health. Many deaths in closed garages have been caused by asphyxiation. Moreover, the fumes are very obnoxious if not dangerous on congested streets and highways.

Many attempts have been made to provide simple and efficacious means to render such gases harmless, but so far as I am aware, such devices have not been practicable for use on automobiles. In most instances, the proposed devices have been too bulky and cumbersome to be practicable. In other instances, the devices are far too complicated to be produced economically. This invention provides a very simple and inexpensive combined gas treating chamber and muflier tfzlhat can be used in lieu of an ordinary muf- Referring particularly to the drawings,

Serial No. 481,573.

the selected embodiment of the invention is shown in Fig.1 as being connected to an exhaust pipe 10 and secured below the chassis frame 11 of an automobile which may be of any make. It is preferably cylindrical and may be about the same size as an ordinary mufiier.

In this example, the construction and arrangement is such that the exhaust gas is first treated by passing over a chemical solution in a chamber surrounding a mufller and the treated gas is then admitted to the mufiier from which it is exhausted into the atmosphere. The mufller here comprises an inner sheet metal cylinder 12 having end walls 13 and presenting a series of spaced perforated bafiies 14 so arranged that the gases are made to travel throu h the cylinder in a zigzag path. 1 This mu er cylinder is entirely enclosed or surrounded by a larger cylinder 15 having end walls 16 spaced from the ends of the mufiier cylinder. The construction is such that the annular space between the cylinders provides the exhaust gas treating chamber which is adapted to be partially filled with a suitable chemical compound such as a dilute hydrochloric acid solution of cuprous chloride which will absorb carbon monoxide gas.

The exhaust gas is here admitted to the space between the cylinders through a pipe nipple 17 on one side of the vertical center line of the front end wall of the outside cylinder, preferably being first slightly cooled by means of ordinary heat radiating fins or ribs 18 on the exhaust conduit 10 (Fig. 1). The gas is confined to travel in a zigzag path over the surface of the chemical solution by means of a sheet metal bafiie 19 (Fig. 8), preferably welded to the walls of both cylinders. In this example, the baflie provides a vertical partition 20 at one side of the vertical center line of the cylinders and terminating below the level'of the liquid solution. It is substantially U-shaped and extends above the muffler cylinder as shown in Figs. 6 and 7, one leg or run terminating short of the front end of the mufiier cylinder. When this battle is secured in place, it also serves to hold the cylinders properly spaced. Its construction is such that the gas travels rearwardly through one side ofithe, annular space between the cylinders; thence, across the space at their rear ends; and, then, forwardly through the other side, before it can enter the muflier cylinder (see the arrow in Fig. 2). It is thus subjected to the chemical action of the treating solution throughout the zigzag path and a large part of its carbon monoxide is absorbed.

The treated gas enters the muffler cylinder through a series of perforations in its upper side wall arranged between the longitudinal portions of the baffle 19. The gas passes through the space between the front end of the short leg of the baflle and the front end wall of the outer cylinder. The perforations are preferably progressively smaller from the front to therear end of the muflier cylinder so that most of the gas enters the muflier near the front end and travels through the perforations in the baflle plates 14 to muffle the noise. The muffled gas then passes out through an exhaust conduit 22 connected to the rear end wall of the muflier cylinder and passing through the rear end wall of the surrounding cylinder 15. This also further serves to support the muflier cylinder.

To supply the chemical solution to the treating chamber and prevent it from being filled above the desired'level, there is shown a filling conduit23 projecting through the outer cylinder at one side and having a U- bend or goose neck 24 so that the liquid will overflow when the chamber is, say, half full. The vertical filling inlet is adapted to be closed by a suitable cap or screw plug 25. This conduit may extend horizontally to any point where the filling opening is easily accessible. Further, the treating solution may be drained through an ordinary drain cock 26 in the lower side wall of the outer cylinder.

To enable the muflier to be cleaned periodically, a pipe nipple 27 is shown as passing through the front end walls of both cylinders so that air or a cleansing fluid may be discharged through it into the muffler cylinder. This nipple is closed by an ordinary screw cap 28.

From the foregoing description, it will be seen that the improved device can be made of a few simple parts which are easily fabricated by electric welding. The sheet metal cylinders and baflies ordinarily will be made of sheet steel or a relatively cheap bronze. The size can be varied to suit the requirements of any engine and the installation in an automobile is a very simple matter. Furthermore, the construction is such that practically none of the treating solution is lost as it cannot splash into the muflier on account of the gas baflle. The solution will be agi-. tated by the vibrations of the automobile so as to insure intimate contract between the gas and the liquid.

Obviously, the present invention is not restricted to the particular embodiment thereof herein shown and described.

What is claimed is:

1.. An exhaust gas treating device of the character described comprising, in combination, a pair of cylinders arranged one within the other and providing an annular chamber therebetween; an inlet for the exhaust gases connected to'one end of the outer cylinder; a baflie extending longitudinally between the walls of the cylinders and across the annular space to cause the gas to travel back and forth in the annular space; the inncr cylinder having perforations adjacent to the baflie to admit the gas to the inner cylinder; mufller means within the inner cylinder; and an exhaust outlet conduit connected to the inner cylinder.

2. An exhaust gas treating device of the character described comprising, in combination, a pair of substantially concentric cylinders one within the other and providing an annular fluid receiving chamber therebetween; said chamber adapted to contain a chemical gas treating solutlon; an inlet for the exhaust gases connected to one end of the outer cylinder to discharge exhaust gases into said annular chamber so as to pass over and come in contact with the chemical treating solution therein; a baflie extending longitudinally between thecylinders and arran ed to cause the exhaust gas to travel bac and forth in said annular space; the inner cylinder having perforations adjacent to the baffle and above the level of the chemical treating solution to permit gas to enter the inner cylinder; muflier means within the inner cylinder; and an exhaust outlet conduit connected to the inner cylinder.

3. An exhaust gas treating device of the character described comprising, in combination, a pair of sheet metal cylinders arranged one within the other and providing a gas treating chamber therebetween; an inlet for the exhaust gases connected to one end of the outer cylinder and discharging in said chamber; a zigzag baflle extending between and connected to both cylinders so as to cause the gas to travel in a zigzag path in said chamber; said chamber adapted to contain a chemical gas treating solution below the level of the gas inlet conduit; the inner cylinder.

character described comprising, in combination, a pair of concentric sheet metal cylinders having closedend walls and spaced from each other to provide an annular gas treating chamber thercbetwccn; a zigzag baflle between the cylinders at the upper side of the inner cylinder providing a partition to cause the gasto travel in a zigzag path through the annular treating chamber; said chamber adapted to contain a chemical gas treating solution below the level of the baflle; the inner cylinder having openings adjacent to the battle to admit gas to the inner cylinder after it has travelled back and forth in said chamber over the solution; and an exhaust outlet conduit connected to the inner cylinder.

5. An exhaust gas treating device of the character described comprising, in combination, a pair of concentric cylinders having closed end walls and spaced from each other to provide a horizontal gas treating chamber; a gas inlet conduit connected to one end wall of the outer cylinder at one side of the vertical center line so as to admit gas to said chamber; said chamber adapted to contain a chemical gas treating solution; baflie means between said cylinders including a vertical partition at the gas inlet end; and a substantially U-shaped bafiie plate extending longitudinally between the cylinders at the top side so as to cause the gas to travel back and forth in the chamber above and in contact with the treating solution; one leg of the bafiie terminating short of-the exhaust inlet and of the inner cylinder and said inner cylinder having a series of perforations in its upper portion between the legs of said battle to permit gas to enter the inner cylinder; a series of perforated baflies within the inner cylinder arranged to cause the gas to travel in a zigzag path longitudinally thereof toward the outlet end; an exhaust outlet conduit connected to the outlet end of said inner cylinder; a filling conduit connected to and passing through the wall of the outer cylinder so arranged as to prevent the outer cylinder from being filled above the desired level; a drain cock connected to the lower portion of the outer cylinder so as to clean out the treating solution; and a pipe nipple connected to the inner cylinder at the end opposite from the outlet end to permit cleaning fluid to be injected therein.

6. An exhaust treating device of the character described comprising, in combination, a pair of concentric sheet metal cylinders providing a gas treating chamber therebetween;

an exhaust inlet conduit connected to the cylinder; and an exhaust outlet conduit connected to the outlet end of the inner cylinder.

In testimony, that I claim the foregoing as my own, I have hereto affixed my signature.

J. A. DUBER.

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