US2322026A - Gas mixer - Google Patents

Description

1 June 15, 1943.

F T. JAECKEL GAS MIXER ,Filed NOV. 3, 19A].

IEOR.

ATTORNEY.

- Patented June 15, 1943 UNITED STATES PATENT GFFICE GAS MIXER Frederick T. Jaeckel, Wauwatosa, Wis.

Application November 3, 1941, Serial No. 417,654

3 Claims.

My invention relates generally to improvements in the art of mixing gases and of controlling the flow of gas mixture through conduits, and relates more specifically to improvements in the construction and operation of a unit for automatically mixing fuel gas with air and moisture which may be present in the gas conducting pipe and for insuring'uniform delivery of the mixture to a burner or other gas utilizing device.

The primary object of my'present invention is to provide a new and useful gas mixer and flow regulator which is simple and compact in construction and which is also highly efiicient in operation.

A more specific object of this'invention is to provide an improved gas mixing device which may be readily constructed and installed in any gas supply pipe of proper size; and which will thereafter function to automatically 'and thoroughly mix the gas with air or moisture which may be present so as toproduce a homogeneous mixture, and to also produce uniform flow of the mixture to the gas utilizing 'stove or other apparatus.

Another specific object of the invention is to provide an improved gas mixing unit of durable and compact structure, which may be quickly and safely applied to orremoved from a gas feed'pipe, and which will separate and collect solid particles being entrained by the gas.

A further specific object of the present invention is to provide an efficient gas mixer which can be manufactured and sold at moderate cost, which may be installed and removed by a novice, and which is especially useful in connection with domestic gas appliances such as cooking stoves and heaters.

These andoth'er objects and advantages of the invention will be apparent fromthe following detailed description.

Aclear conception of the various features constituting my present improvementmay be had by referring to the drawing accompanying and forming a part of this'specification wherein like reference characters designate the same or similar parts in the various views.

Fig. 1 is 'a central vertical section through one of my improved gas mixers and a fragment of the pipe to which it is applied;

Fig. 2 is a similar section through a modified type of the improved gas mixer and fragment of the pipe to which it is applied;

Fig. 3 is a transverse section of the assemblage taken along the line 3-3 of Fig. 1;

Fig. 4 is likewise a transverse section of the assemblage taken along the line 4-4 of Fig. 2; and I Fig. 5 is-an end viewof the improved gas mixer illustrated in Fig. 1, taken from the convex end thereof.

While the invention has been shown and described herein as being specifically applied to a gas mixer manufactured of plastic, hard rubber or metal and adapted for insertion into a gas stove supply pipe, it is not my desire or intent to thereby unnecessarily restrict the scope or utility of the improvement.

Referring to Figs. 1, -3 and 5 of the drawing, the improved gas mixer therein shown comprises in general, a cylindrical body I0 having -a concave end II and an opposite convex end *IZ, a well I3 intermediate the ends II, I2 and .provided with a closure I4, an inlet passage l5 extending from the medial portion of the concave end -II to the lower side wall of the well I3, and an outlet passage I6 extending from the upper side wall of the well I3 to the medial portion of the convex end I2. The body 10 may be formed of either a plastic, hard rubber, or metallic material and is preferably provided with an integral flange IT, at the concave end II, and-the closure I4 maybe formed of cork, rubber,

asbestos or the like.

The body 10 is adapted to be positioned within the feed or supply line leading to a gas stove or the like and may be readily inserted at the point where two pipe sections I8, I9 of the feed line are ordinarily united by a union. The union illustrated in the drawing is in common -usage and consistsof a sleeve 20 having screw thread coaction with the pipe section I8 and being provided with a seating surface 21 at one end and a continuous outwardly directed flange 22 adjacent the surface 2|, a sleeve 23 having screw thread coaction with the pipe section I9 and provided atone end with a seat 24 of comparatively soft material surrounded by outer screw threads 25, and a collar 26 provided with a flange 21 adapted to coact with the flange )22 of the sleeve 29 and also being provided with 'screw'tl'ireads 2-8 adapted to coact with the screw threads 25 of the sleeve l23-to draw the seating surface 2| of the sleeve 20 into seating contact with the seat 2 1 of the sleeve 23 when tightened.

In order to apply my improved gas mixer to a the flange I! in engagement with the end of this pipe section [9 so as to retain the body II] in position. The pipe sections I8, [9 may thereafter again be united by connecting the screw threads 28 of the collar 26 with the screw threads 25 of the sleeve 23, and firmly uniting the same with the aid of a wrench or the like. When the collar 26 has been tightly screwed upon the sleeve 23, the flange 21 of the collar 26 will co-operate with the flange 22 of the sleeve 20 to force the seating surface 2| into snug contact with the spherical seat 24 of the sleeve 23 thereby producing an extremely tight union and sealing the gas feed line with the improved gas mixer properly positioned therein.

The gas, air and moisture may thereafter be delivered under pressure from a source of supply through the inlet pipe section 18 in relatively unmixed condition before entering the cylindrical body ID at the concave end H via the passage 15, After leaving the passage I5 the gas, air and moisture enter the mixing well [3 wherein they are thoroughly mixed by virtue of the sudden expansion thereof within the well and the constant circulating action therein. As the gas becomes thoroughly mixed with the air and moisture, a homogeneous mixture is produced, and the pressure created by the subsequent gas forces the mixture through the passage [6 and pipe section [9 to the point of combustion. By virtue of the thorough mixing of the ingredients in the well [3 and the reduction in size of the passages I5, Hi, the combustible nature of the resulting product is greatly increased, and gas consumption is thereby reduced while a more uniform flame results. The well 13 also serves as a cleaning chamber since any solid particles which might be entrained by the gas, air and moisture through the passage I5, will drop to the bottom of the well [3, thereby assuring delivery of pure mixture through the pasage l6, and reducing the possibility of burner clogging. Ihe device may be readily withdrawn from the feed line by uncoupling the pipe sections as heretofore explained, and the plug or closure I4 may be removed to facilitate cleaning of the Well [3 when necessary.

In the modification illustrated in Figs. 2 and 4, the closure [4 has been omitted from the well l3, and a band It of rubber, asbestos or the like encircling the cylindrical body I0 at the Well I3 has been substituted. Since the general construction of the modified device is substantially the same and the union illustrated is identical with that shown in Figs. 1, 3 and 5, the same reference characters have been utilized to designate corresponding parts. The band l4 additionally serves to center the cylindrical body H1 within the pipe section [9, besides functioning as a tight closure for the well [3, and this band is preferably either formed of elastic material or should be slide fitted about the body [0 so as to permit ready access to the well l3.

From the foregoing detailed description, it will be apparent that an improved gas mixer unit is provided, which may be readily constructed of any suitable inexpensive material such as rubber, metal, plastic or cork, at extremely low cost and may be manufactured in various standard sizes to fit standard gas feed lines. The device may be quickly and properly installed by a novice, and the particular formation of the concave inlet end and convex outlet end and of the passages l5, 16, not only serves to naturally conduct the gaseous constituents to and away from the unit, but also provides an assemblage which facilitates correct installation. While one particular type of standard pipe union has been illustrated, the device may nevertheless be similarly installed where other types of unions are utilized. The improved mixer has proven highly efficient in actual use, and the particular formation of the passages and mixing well insures thorough and complete cleaning and mixing of the elements.

It should be understood that it is not desired to limit this invention to the exact details of construction or to the precise mode of use, herein shown and described, for various modifications within the scope of the claims may occur to persons skilled in the art.

I claim:

1. A gas mixer adapted for confinement within a gas pipe, and comprising, a one-piece body having a smooth cylindrical peripheral surface formed for snug axial insertion within the pipe, said body being provided with a medial cylindrical well extending across and approximately perpendicular to the central body axis and open for inspection at said peripheral surface, and said body also having straight cylindrical passages connecting upper and lower portions respectively of said well with the central opposite end portions of the body.

2. A gas mixer adapted for confinement within a gas pipe, and comprising, a one-piece body having a smooth cylindrical peripheral surface formed for snug axial insertion within the pipe, said body being provided with a medial cylindrical well extending across and approximately perpendicular to the central body axis and open for inspection at said peripheral surface, and said body also having straight cylindrical passages connecting upper and lower portions respectively of said well with the central opposite end portions of the body, and a removable closure for the well inspection opening attached to said body.

3. A gas mixer adapted for confinement within a gas pipe, and comprising, a one-piece cylindrical body having a smooth cylindrical peripheral surface formed for snug axial insertion within a pipe and also having a conical recess in one end and a similarly conical projection at its opposite end, said body being provided with a medial cylindrical well extending across and approximately perpendicular to the central body axis and open for inspection at said peripheral surface,

FREDERICK T. JAECKEL.

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