US2131336A

US2131336A - Direct fired steam mangle

Info

Publication number: US2131336A
Application number: US94267A
Authority: US
Inventors: Timothy J Sullivan
Original assignee: Sullivan Valve and Engineering Co
Current assignee: Sullivan Valve and Engineering Co
Priority date: 1936-08-04
Filing date: 1936-08-04
Publication date: 1938-09-27
Anticipated expiration: 1955-09-27

Description

P 27, T. J. SULLIVAN 2,131,336

DIRECT FIRED STEAM MANGLE Filed Aug. 4, 1956 2 Sheets-Sheet l m- 7, 1933. T. J, SULLIVAN 2,131,336

DIRECT FIRED STEAM MANGLE Filed Aug. 4, 1936 2 Sheets-Sheet? A Z; 20 w Patented Sept. 27, 1938 UNITED STATES PATENT OFFICE DIRECT FIRED STEAM MANGLE.

Application August 4,

10 Claims.

This invention relates to ironing machines of the cylinder and roll type wherein the ironing surface of the cylinder is heated by steam within the same.

Many attempts have previously been made, particularly in territories served by natural gas, to eliminate expensive coal fired steam generating equipment by firing the driers and other laundry equipment directly with gas. It was thus exepected to effect substantial savings in the operation of a laundry. However, experi ence has shown that the primary obstacle to the success of such plans for using direct fired as distinguished from indirectly heated equipment has been the unsatisfactory results from the operation of the mangles with direct gas firing. Whereas with the use of steam, temperature control and uniform heating of the entire surface of the ironing cylinder have presented no problem, with previous methods of direct gas firing these factors present serious difficulties. This is due to the fact that with old methods of direct gas firing, one part of the ironing cylinder tends to overheat while another portion may be too cool to work efficiently.

The primary object of the present invention is to provide a direct fired mangle with all of the inherent temperature control and other desirable features of an indirectly heated steam mangle.

Another object is to provide means for generating steam in the ironing cylinder itself for heating the mangle.

A further object is to provide a direct gas fired steam mangle in which the products of combustion from the gas burner are utilized in the generation of steam in the ironing cylinder.

Other objects and advantages of the invention will be evident from a consideration of the following detailed description with reference to the accompanying drawings, wherein:

Fig. 1 is a side elevation, partly in section, of an embodiment of the invention;

Fig. 2 is an end view thereof;

Fig. 3 is an end View with some of the parts broken away Fig. 4 is a fragmentary sectional view of a portion of the apparatus, and

Fig. 5 is a fragmentary sectional view illustrating a slight modification.

In the drawings, the conventional parts of the mangle have not been shown in detail and in some instances have been omitted entirely for the sake of clearness. The mangle illustrated is composed of a rotatable cylinder 10 closed at its ends by inset heads II, the surface of said cylin- 1936, Serial No. 94,267

der extending beyond the heads as a projecting annular flange [2 at each end thereof.

The cylinder If] is mounted on trunnions l3 and I4 formed with or secured to the heads II and suitably journalled in frame members l5 and i6 and is driven by a motor I I through a pinion l8 mounted on the projecting end of the trunnion I4. The usual ironing rollers [9, as shown in Fig. 2, are provided in cooperative relation to the upper surface of the cylinder 10.

Each of the heads I I in the embodiment illustrated carries an annular flange or ring 20 spaced from and concentric with the flanges l2 and stationary cover plates 2| and 22 are mounted in cooperative relation to the edges of said concentric flanges to provide closed.

annular spaces

23 and 24 constituting manifold chambers at opposite ends of the cylinder. The plates 2| and 22 may have simple sliding contact with the flanges as shown in Fig. 4 or the parts may be furnished with interfitting grooves and ribs to provide labyrinth seals 25 between the parts as shown in Fig. 5.

A plurality of flue tubes. 26 extend longitudinally through the cylinder l0 and are carried between the heads ll. These tubes may be arranged around the axis of the cylinder, somewhat closer, as shown, to the inner surface of the cylinder than to the axis of the latter.

The cover plates 2| and 22 are provided with openings 21 and 28, respectively, in the lower portions thereof, these openings being arranged opposite a point in the path of rotation of the tubes 26 and preferably of such size and shape that the ends of three tubes will be opposite the openings at the same time.

A burner casing 29, to which the plate 2| may be Welded or otherwise secured, is mounted over the opening 21 and a suitable .gas burner 30 in the casing supplies the necessary heat, the products of combustion passing into and on through the tubes 26 as they arrive opposite the opening 21 during rotation of the cylinder.

After passing through the tubes 26 the burner gases are vented from the space 24 through a suitable flue pipe 3| to which the plate 22 may be welded or otherwise secured, one end of the flue pipe being mounted over the opening 28 in the end plate 22. A forced draft is induced in the flue pipe 3| by arranging the discharge pipe 32 of a motor driven blower 33 so that it exhausts into the fine pipe adjacent the throat of a Venturi section 34.

To direct the products of combustion from the burner into the tubes 26 as they come into their lowermost position opposite the burner, radial bafile plates 35 are mounted on the cover plate 2| on either side of the opening 2? within the space 23.

The trunnion 13, as shown in Fig. 4, is made hollow to permit the passage of a steam pipe 35 which extends through a stufiing box 31 and opens into the interior of the cylinder It. The steam pipe 36 is connected to a pressure-responsive means 38 preferably of the diaphragm type acting on a suitable control valve 39 which in turn regulates the amount of fuel supplied to the burner 30 in known manner. A safety valve ll! is mounted on the stuffing box sleeve Gila and a pressure gauge 4| is connected to the steam pipe 36, conveniently at the regulator coupling.

For the purpose of observing the amount of water in the cylinder It], a plurality of bulls eyes 42 are mounted in one of the heads ll, the same being visible through the central opening in the cover plate 2i. Fusible safety plugs Q3, Fig. 3, are also provided in the head I l within the area defined by the flanges l2 and 29. These plugs will blow out in case of overheating of the mangle thus extinguishing the flame of the burner.

In operation, the cylinder if! is partially filled with a vaporizable heat-transfer medium such as water and is sealed. The burner 39 is then started, the products of combustion being projectedinto and through the tubes 28 in succession as they come opposite the opening 2? during rotation of the cylinder. The spent gases after passing through the tubes 26 enter the space F 24 and are drawn off through the fiue pipe 3!.

Steam is thus generated in the cylinder H3. The supply of fuel to the burner SE is regulated by the control valve 39 in-accordance with the pressure of the steam generated within the cylinder.

While a preferred embodiment of the invention has been shown and described, it will be understood that various modifications in details of construction may be resorted to without departing from the spirit of the invention.

I claim:

1. A mangle comprising a rotatable ironing cylinder closed at its ends and adapted to contain a heat-transfer medium, a plurality of flue tubes extending through said cylinder, and a fuel burner mounted adjacent one end of said cylind'er and so arranged as to communicate successively with said flue tubes at the ends thereof during rotation of said cylinder.

2. A'mangle comprising a rotatable ironing cylinder closed at its ends and adapted to contain a heat-transfer medium, a plurality of flue tubes extending through said cylinder and arranged around the axis thereof, a fuel burner mounted adjacent one end of said cylinder and so arranged as to communicate successively with said flue tubes at the ends thereof during rotation of said cylinder, and means for directing the flame of the burner and products of combustion into said flue tubes.

3; A mangle comprising a closed cylindrical chamber providing an ironing surface and adapted'to contain a heat-transfer medium, a plurality of fiue tubes carried by said cylinder in contact with the heat-transfer medium therein and openingoutside of the cylinder at its ends, means pro viding a manifold chamber into which said tubes open at one end of said cylinder, and a fuel burner mounted adjacent the last mentioned end of said cylinder and so arranged as to discharge its products of combustion into said manifold and into said tubes successively as the cylinder is rotated.

4. A mangle comprising a closed cylindrical chamber providing an ironing surface and adapted to contain a vaporizable heat-transfer medium, a plurality of flue tubes carried by said cylinder in contact with the heat-transfer medium therein and opening outside of the cylinder at its ends, a fuel burner mounted adjacent an end of said cylinder and discharging into said tubes successively as the cylinder is rotated, and means responsive to the pressure in said cylinder for controlling the fuel supply to said burner.

5. A mangle comprising a rotatable cylinder closed at its ends and adapted to contain a heattransfer medium, a plurality of flue tubes extending through said cylinder and arranged around the axis thereof to contact during rotation with the heat-transfer medium therein, means for supplying heat to said flue tubes as the cylinder rotates, and means for controlling the heat supplied in accordance with the temperature within said cylinder.

6. A mangle comprising a rotatable ironing cylinder, inset heads adjacent each end of said cylinder forming a closed chamber therein, means comprising end plate members forming a closed space at each end of said cylinder beyond said heads, flue tubes extending through said cylinder and opening at their ends into said spaces, a fuel burner arranged to direct its flame and the products of combustion into one of said spaces and into said flue tubes, and means for venting the other of said spaces.

'7. A mangle comprising a rotatable ironing cylinder, inset heads adjacent each end thereof forming a closed chamber, means comprising staticnary end plates forming a closed space at each end of said cylinder beyond said heads, a plurality of fiue tubes extending through said cylinder and arranged around the axis thereof and opening at their ends into said spaces, one of said plates having an opening therein opposite a point in the path of said tubes when said cylinder is rotated, a fuel burner in said opening and means for venting the space at the other end of said cylinder.

8. A mangle comprising a frame, a rotatable ironing cylinder journalled in said frame, inset heads adjacent each end of the cylinder closing the same, stationary end plates in proximity to the ends of said cylinder forming a closed space between said heads and said plates at each end of the cylinder, a plurality of flue tubes extending through said cylinder and arranged around the axis thereof and opening at the ends thereof into said spaces, a burner casing carried by one of said end plates and opening into the space at one end of said cylinder, and vent means carried by the other of said plates in communication with the space at that end of said cylinder.

9. A mangle comprising a rotatable ironing cylinder having heads at each end for closing the same, stationary end plates in axial alinement with said cylinder heads and forming closed spaces between said plates and said heads at the respective ends of the cylinder, an annular sealing member between one of said cylinder heads and one of said stationary plates, flue tubes ex tending through said cylinder and opening at the ends thereof into said spaces, a burner casing opposite one of said end plates and opening into the space at one end of said cylinder, and vent means opposite the other of said plates in communication with the space at that end of the cylinder.

10. A mangle comprising a rotatable ironing cylinder having end closures forming a closed steam chamber, means providing a manifold chamber at one end of said cylinder, open ended flue tubes extending through said cylinder and arranged to communicate successively at one end thereof with said manifold chamber during rotation of said cylinder, a fuel burner arranged to discharge into said manifold chamber, and means for venting the other ends of said tubes.

TIMOTHY J. SULLIVAN.