US2146808A

US2146808A - Vaporizer

Info

Publication number: US2146808A
Application number: US43008A
Authority: US
Inventors: George C Flint
Original assignee: VAPO SYSTEMS EQUIPMENT Co
Current assignee: VAPO SYSTEMS EQUIPMENT Co
Priority date: 1935-10-01
Filing date: 1935-10-01
Publication date: 1939-02-14
Anticipated expiration: 1956-02-14

Description

Feb. 14, 1939. G. c. FLINT 2,146,808

VAPORIZER Filed Oct. 1, 1955 2 Sheets-Sheet 1 Patented Feb, 14, 1939 PATENT OFFICE VAPORIZER George 0. Flint, Oak Park, Ill., assignor to 79410 Systems Equipment Company, a corporation of Illinois Application October 1,

8 Claims.

My invention relates to mechanism for producing a vapor, mist or exceedingly fine spray and discharging the same into a space or against, or in the vicinity of, a moving web or mass of 5 material to moisten or condition the material or to control the humidity of the space for any desired purpose.

The object of my invention is to provide a device of the kind described wherein the density ll! of the vapor and the velocity of its discharge may be conveniently adjusted and controlled to suit the requirements and conditions in each case.

A further object is. if desired, to provide for .3 automatically changing the velocity or the density of the vapor under certain predetermined conditions or at certain times or periods without changing the normal adjustment of the controlling means.

31) A further object is to arrange so that if desired all operating adjustments upon each of the several units or sections of my device may be made entirely independent of the remaining sections or units of the device.

A further object is to provide convenient means for changing the volume of the vapor discharged from the several sections without in any manner changing the relative density of the vapor discharged from said sections.

Further objects and advantages will appear to those skilled in the art from the following description.

In the accompanying drawings wherein like or similar reference characters indicate like or corresponding parts:

Figure 1 is a plan view of my device shown in operation upon a web of cloth, paper or the like;

Figure 2 is an enlarged transversed section taken substantially on line 2-2 of Fig. 1;

40 I Figure 3 is a section taken substantially on line 33 of Fig. 2;

Figure 4 is an enlarged longitudinal section of the reservoir and control mechanism of my device with associated elements taken substantially on line 4-4 of Fig. 5;

Figure 5 is a transversed section of the parts shown in Fig. 4 taken substantially on line 55 of Fig. 4, and

Figure 6 is a longitudinal central section of a form of syphon jet which I have found very satisfactory and desirable for use with my device.

In the form shown in Figure 1 of the drawings, my vaporizer is arranged in operative relation to a web of cloth, paper or other flexible material which is arranged to move at a sub- 1935, Serial No. 43,008

stantially uniform speed while the same is being operated upon by my device. As shown, a control cabinet 2 formed of any suitable form, size or material is mounted in a convenient position in the vicinity of the web I and connected by any suitable means such as copper tubing 9 and 9' or the like, to heads 3-3 mounted upon a rotatable tubular member 4 extending across the web and suported as at 4--4' at its extremities beyond the margins of the web. As shown, air under suitable pressure is supplied to the mechanism in the control cabinet 2 by a pipe 5, and the fluid to be employed upon the web is provided by a pipe 6. In the form shown the several heads 3 are suitably spaced along the member 4 and are each supoprted in position by an air pipe 1 and a liquid pipe 8 extending to the rotatable member 4.

In the form shown, a block II having an opening It" therethrough is provided within the member 4 for each air pipe I and the end of each pipe I is screw-threaded and extends through the wall of the member 4 and engages the threaded wall of the opening ll while a nut I4 upon the pipe is provided to firmly clamp the wall of the member 4 to the block, suitable means being provided to prevent leakage between the block and the pipe.

Similar blocks l2 each provided with an opening l2 are provided for the liquid pipes 8 and are each clamped to the Wall of the member 4 by a nut l5 upon the pipes 8 in all respects similar to the connections described for the pipes 1.

In the form shown, also suitable independent tubes 99 are provided for the blocks II and l2, each tube 9 being screw-threaded into the opening II in a block H and each tube 9 into an opening I 2'.

The blocks H and I2 are also provided with nuts l6 and I1 respectively for cooperating with the

tubes

9 and 9 to secure rigid fluidtight joints between the respective tubes and blocks.

The several tubes 9-9' extend within the member 4 to its end adjacent the control cabinet 2 and thence as shown to the cabinet and through a suitable opening in the cabinet wall and are each attached to the mechanism within the cabinet.

The heads-3-3 may be of any suitable form or construction adapted to produce a suction or syphon action in the liquid tube 8 by the passage of air at sufficient velocity through the head, so that when air under suitable pressure is supplied through the pipe 1, suitable velocity is provided and a predetermined suction is produced whereby. fluid will be drawn into the head 3 through the pipe 8.

In the preferred construction shown, the heads 3-'3 are so mounted upon the pipes 1 and 8 that the union nuts l8 and I! connecting the head to the respective pipes may be loosened and the head turned to any desired position and thereafter rigidly locked in the desired position upon the pipes by again tightening these nuts.

In the form shown, the heads 3 each comprise a body part 20 as shown in Figure 6, having oppositely disposed externally screw-threaded hubs 2| and 22 adapted to receive the nuts l8 and I9 respectively. A central duct 24 is provided in the hub 2! extending to a chamber 25 in the body at substantially right angles to the duct 24. One end of the chamber 25 is closed by a threaded plug 28, and the opposite end extends into close proximity to the end of the part 21, preferably having a comparatively thin wall at the end of the chamber and a plurality of small openings as 28 and 29 extending from the chamber through the wall.

As shown, the openings 28 are slightly larger than the opening 28 which is shown approximately in axial alignment with the chamber. since it is found in practice that because of the position of the opening 29 a larger amount of fluid will be discharged through an opening of a given size so positioned than through the openings 28 which diverge slightly from the central line of the chamber.

A cap 30 is provided and arranged to enclose the part 21 and the adjacent parts of the body 20 as shown, and is preferably attached to the body 20 by a screw-threaded and inwardly flanged nut 33 engaging a projecting flange 32 upon the cap. A pin 3| or other convenient means upon the body 20 engages a radial groove or recess 34 upon the cap' to accurately position the cap upon the body. As shown, the cap 30 is provided with a plurality of holes 35, each preferably axially aligned with the corresponding opening in the body part and preferably of slightly larger diameter than the same, so that when air issues from the

openings

28 and 29 with suflicient velocity a very positive reduction in pressure is produced within the cap.

In the form shown a central passage 36 is provided in the hub 22 and a lateral duct 31 extends from the inner end of the passage to the space within the cap 38 adjacent the part 21 to permit fluid from the pipe 8 to be drawn into the cap by the suction described and ejected through the openings 35.

Any suitable means may be provided to control the air and fluid passing through the

pipes

9 and 9. In the form shown, the cabinet 2 is provided with a plurality of lateral passages 40, one for each pipe 9, and each passage is provided with a plurality of lateral ducts or

openings

44, 45 and 45.

As shown in Figures 4 and 5, a pipe 9 is attached N to each of the openings 44 by a suitable connection 50, and the duct 45 is attached by a similar connection 5| to a vapor pipe 52 extending into the upper portion of the cabinet 2, while the duct 46 is attached by a somewhat similar connection 56 to a tubular member 53 extending upward through the cover plate 54 of the cabinet. The lower end of the member 53 is screw-threaded as at 55 within the member 56 and the lower end of the member extends downward through the duct 45 so that the lower end projects slightly into the lateral passage 40 and is there formed to serve as a valve seat. Suitable means, as for example, the openings 51, are provided in the wall of the tubular member 53 to permit any fluid in the cabinet to enter the member and escape freely through the member 53 into the lateral passage 40. The space between the lower end of the connection 55 and the bottom of the opening into which the same is secured, is shown provided with suitable packing material 58 surrounding the lower end of the tubular member 53 so that the fluid in the cabinet will not escape into the passage past the lower god of the member 53. In the form shown, a pair of needle va ves 50 and iii are provided adapted to cooperate with the duct 45 and the lower end of the member 53 respectively, to control the passage through the vapor pipe 52 and the tubular member 53 and by their. adjustment determine the amount of liquid and vapor drawn into the passage 40 by the suction of the pipe 3 and thence discharged through the opening 44 to the pipe.

Any suitable means may be provided for controlling the supply of air to the 'air pipe 9'. As shown, a longitudinal passage 62 directly connected as indicated by Figures 4 and 5, to the air supply pipe 5, is provided in the side of the casing 2 opposite the passages 40 and atube 9' extends from the rotatable member 4 to the cabinet and is attached by a connection 63 and passage 64 to the passage 62 and extends into the member 4 and is there attached to the pipe 1. A needle valve 65 is provided to control the opening between the passage and the duct 62 thereby the amount of air passing through the duct and thus by the tube 9 and pipe 1 to the head 3.

In the preferred construction, a float valve 56 directly connected to the liquid supply pipe 5 and having a float 51 is provided in the cabinet 2 adapted to control the fluid level in the cabinet and maintain the same substantially constant.

In the preferred construction shown also suitable means are provided for maintaining the fluid in the cabinet at a'constant temperature. As shown, an electric thermostat 7D is mounted upon one wall of the cabinet at substantially the upper level of the fluid in the cabinet and a heating element of any suitable form or construction H is provided and electrically connected with the thermostat I0 and to the source of electric energy so that electric current to the heating element II will be controlled by the thermostat and thus maintain the fluid in the cabinet at the desired temperature. When thus constructed as arranged, my improved device is provided with the necessary air and liquid supply and connected to a suitable source of electrical energy, neither of which is shown, and the needle valves controlling the flow of fluid through the

pipes

9 and 9 are adjusted to secure the desired density as well as velocity of the vapor as it issues from the heads 3, it being obvious that the velocity of the jet may be independently controlled by thevolume of air permitted to pass the valve 65 into each pipe 8'. It is also obvious that the density of the fluid or spray will be controlled by the position of the valves 60 and iii since the valve 6| controls the escape of fluid from the cabinet into the passage 40, and the needle valve 50 controls the escape of vapor from the upper portion of the cabinet into the passage 40, whereby the mixture of vapor andfluid drawn from the passage 40 through the ill . tion 56, and the amount of liquid admitted to opening 44 into the tube 9 and thence-to the several heads 3 may be controlled as desired.

It is obvious that the temperature 01' the liquid 7 in the cabinet may be employed to provide a vapor in the upper portion of the cabinet as dense or as attenuated as may be desired, from a very wet steam down to a very slight or almost imperceptible humidity; and that when such vapor is mixed with a positively controlled volume of fluid entering the passage 40 through the member 53, the resulting vapor may be as dense or as attenuated as may be desired. It is obvious that when zle, said means being separately controllable the device is suitably adjusted, changes in atmospheric humidity will tend to require changes in the volume of vapor discharged from the several syphon jets. This is especially true where material is being prepared for some special process, such as charging cloth with a glazing or stiffening material or when moistening paper to receive printed impressions or the like, and in such case the changes in atmospheric humidity render it desirable to adjust the volume of vapor being supplied to the moving web. For this purpose a bell crank I3 is provided at the upper end of each of the parts 58 and a bar I4 is provided connecting the several bell cranks, so that by moving the bar 14 longitudinally the member 53 will be partially rotated and the longitudinal position of the member will also be changed by the operation of the threaded portion in the conneceach of the passages 40 will be altered as the member 53 is advanced or retracted from the needle valve 6|.

Any suitable means may be provided, either manually operated or automatically controlled by the humidity of the atmosphere, to automatically adjust the position of the bar I4 and thus control the operation of my device to suit the varying conditions which may arise in service as well as in the various applications of my improvement, but these accessories while of course desirable in the practical use of the device form no part of my present invention.

Having thus described my improvement, it is obvious that various immaterial modifications may be made in its embodiment without departing from the spirit of my invention; hence I do not wish to limit myself to the exact form or construction shown.

What I claim as new and desire to secure by Letters Patent is:

1. In a spraying apparatus, the combination of a syphon nozzle, a valve controlled means for supplying pressure fluid to said nozzle and a liquid and vapor mixture source; said source comprising means defining a vapor space in open communication with a liquid space, heating means within said liquid space, a mixing chamber connected to said nozzle and having valved communication with said liquid space and separate valved communication with said vapor space;

2. In a spraying apparatus, the combination of a syphon nozzle, a valve controlled means for supplying pressure fluid to said nozzle and a liquid andvapor mixture source; said source comprising means defining a vapor space in open communication with a liquid space, means for automatically maintaining the size of each space, heating means within said liquid space, a mixing chamber connected to said nozzle and having valved communication with said liquid space and separate valved communication with said vapor space.

3. In a spraying apparatus, the combination of with for controlling the density and -quantity of said liquid and vapor mixture to said syphon nozvalved conduits to said liquid space and to said vapor space.

4. In a spraying apparatus, the combination of a row of nozzles, each of said nozzles having a valve controlled means for supplying pressure fluid to said nozzle and a liquid and vapor mixture source; said source comprising a common means defining a vapor space in open communication with a liquid space, heating means within said liquid space, a separate mixing chamber therein connected to each one of said nozzles and having valved communication with said liquid space and separate valved communication with said vapor space.

5. In a spraying apparatus, the combination of a rotatable support member, a row of syphon nozzles mounted thereon, each of said nomles having a valve controlled means for supplying pressure fluid to said nozzle and a liquid and vapor mixture source; said source comprising a common means defining a vapor space in open communication with a liquid space, heating means within said liquid space. 'a separate mixing chamber therein connected to each one of said nozzles-and having valved communication with said liquid space and separate valved communication with said vapor space.

6. In a spraying apparatus, the combination of a syphon nozzle, a valve controlled means for supplying pressure fluid tosaid nozzle and a liquid and vapor mixture source; said source comprising means defining a vapor space in open communication with a liquid space, heating means within said liquid space, temperature control means associated with said heating means, a mixing chamber connected to said nozzle and having valved communication with said liquid space and separate valved communication with said vapor space.

'7. In a spraying apparatus, the combination of a plurality of syphon nozzles, a valve' controlled means for supplying pressure fiuid at each oi said nozzles, and a common liquid and vapor mixture source for all of said nozzles; said source comprising means defining a vapor space in open communication with a liquid space, heating means within said liquid space, an individual mixing chamber connected to each of said nozzles and a single means associated with all of said mixing chambers for controlling the density and quantity or the liquid and vapor mixture to each of said syphon nozzles.

8. A vaporizer comprising groups of mixing