US2241920A - Automatic closing atomizer casing - Google Patents

Description

May 13, 1941. PETERSON 2,241,920

AUTOMATIC CLOSING ATOMIZER CASING Original Filed Marbh 19, 1938 III.

21: 6. PETERSON INVENTOR BY M g AT N EY Patented May 13, 1941 UNITE STAT PATE'E anromaric oaosnve ATOMIZER CASING Eric G. Peterson, Glen Ridge, N. 5., assignor to Peabody Engineering Corporation, New York,

22 Claims.

The present invention relates to the mounting of the removable atomizer tubes employed in fuel burners and is a division of application for patent on Fuel burners, Serial No. 196,878, filed March 19th, 1938, now Patent 2,190,190, February 13,

- withdrawn; which will open .automatically to admit the atomizer in the reverse operation of inserting the atomizer tube and in which the valve parts preventing flow in opposite directions will be fully guarded and protected against injury from the atomizer tube as it is being inserted or removed.

Other objects and the novel features of the invention will appear and are set forth in the following specification.

The drawing accompanying and forming part of the specification illustrates one of the present commercial embodiments of the invention. The structure, however, may be modified and changed in various ways as regards this present illustration as will be apparent from the true spirit and broad scope of the invention as hereinafter defined and claimed.

Figure 1 is a top plan view of the casing at the outer end of the diffuser pipe which serves as a mounting or coupling for the removable atomizer tube, shown with the top of the casing removed to expose thereversely acting interconnected check valves and with the diffuser pipe and atomizer tube broken away.

Figure 2 is a broken side elevation of the same parts, with the cover in place and parts appearing in section as on substantially the plane of line 22 of Figure 1.

Figure 3 is a broken sectional view with the atomizer removed and the reversely acting valves both closed.

Figure 4 is a cross sectional view of the atomizer supporting casing as on substantially the plane of line 4-4 of Figure 3.

In the several views the burner support tube or diffuser pipe is indicated at 5 and the atomizer tube at 6.

The outer end of the diffuser pipe carries a casing 1 which forms a mounting and provides a coupling for the atomizer. For such mounting and coupling purposes the atomizer tube is shown as having a head 8 at its outer end engageable at 9 over a guide pin H! on the breech of the casing and adapted to be forced by the clamp screw ll of a swinging yoke l2 into firm gas and liquidtight engagement with the end of the casing. Gaskets such as indicated at It are usuallyprovided to seal the atomizer head at-l i and the fuel connections 15 which make up at Hi.

To prevent flow of gases or liquids in either direction through the diffuser pipe when the atomizer is withdrawn, automatic reversely closing check valves are arranged within the casing, one of these valves I1, swinging inwardly to freely admit the atomizer tube and closing outwardly against an annular valve seat 18 to prevent outfiow of gas or liquid through the diffuser pipe; and the other check valve l9 swinging outwardly to clear the atomizer tube and closing inwardly against an annular valve seat 20 to prevent inward flow of gas or liquid through the diffuser pipe. A

The two valves are shown as hung on pivot pins 2!, 22, seated in the upper portion of the casing. Valve IT is shown as having spaced substantially parallel ridges 23 on the back of the same, extended at the top as pivot lugs engaged with the ivot pin 2! and valve I9 is shown as having similarly spaced substantially parallel projections 24 on the back of the same. Pivotally engaged on pin 2i between the substantially parallel ridges 23 of the first valve is a free swinging lever 25 projecting between the ridges or flanges 24 of the second valve into position to engage thecross pin 26 carried by the latter. v

The lever 25 is thus pivotally supported over the back of the first or inwardly opening valve ll, Figure 3, so that as the latter is pushed inwardly and upwardly by an inserted atomizer tube, it will be lifted into engagement with cross pin 26 and will thereupon swing the second, outwardly opening valve I9 upwardly, in advance of the entering end of the atomizer. The second outwardly opening valve is thus automatically swung up out of the way of the atomizer and preferably supported by the lever, entirely clear of the atomizer tube, substantially as shown in Figure 2.

To prevent engagement between the atomizer tube and the sealing faces of the valves, the latter are shown as having rounded or inclined, camlike projections 27, 28 within the circular outlines of the valve faces and designed to act-as guards which will prevent any contact between the valve faces and atomizer tube under all possible relations of these parts.

To prevent the atomizer tube from engaging the valve seats is, 20, the latter are shown as set back from the passages 29, 3B, which they suraction of the same.

i the valve seats.

round, by bevel clearances 3!, 32 and the casing is shown as having a generally circular web 33 intermediate its ends to confine and guide the atomizer tube to a path in which it cannot strike such valve faces. This annular guide web is cut through at the top as at 34 for free passage of the valve lifting lever 25 and the flanges or ridges 23 on the back of the first valve element.

To enable ready inspection of the valves and valve lifting mechanism, the casing is illustrated as having a removable top or cover 35. this cover is in place the valves, valve seats and lifting lever are wholly enclosed and protected.

The two reversely acting valves do not interfere with free removal of the atomizer. As the end of the atomizer is withdrawn from engagement with the supporting lug- 21 of the first valve,

When

the two valves drop to their closed positions, automatically sealing the burner support tube against flow of gas or liquid in either direction. In the closed position, the valves are disconnected as shown in Figure 3 so that each can seat properly,

independent of the other. As indicated in this view the inwardly opening valve I! will be opened to some extent by the incoming atomizer before it picks up the lever25 andthe latter will have a short movement before it picks up the second valve 19. There is thus the eifect of a lost motion connection relation between the two valves, causingthem to act in succession and leaving them free for self-adjusting movements in the closing The action is wholly automatic, in the opening as well as in the closing direction by reason of the special relation shown in which the valves swing toward each other, so that ,onewill swing open with the push of the entering atomizer tube and the lever operated from this inwardly winging valve will then lift the other,'outwardly swinging valve.

The valve seats being set back from the bores through which the atomizer tube is passed are protected against injury from the atomizertube and the intermediateguide web between the valve seats guards against the atomizer tube being shifted to some angle such that it might strike The guard projections within the circular outlines of the valve faces protect such faces against possible injury from the atomizer tube. Thus the valves and valve seats can be relied on at all times to fully seal the diffuser pipe whenever the atomizer tube is withdrawn. The difiuser pipe is sealed against flow therethrough when the atomizer is in position by engagement .of the gasket [3, on the atomizer head with the projecting bevelled lip I l, on the opposing end of the diffuser pipe casing.

The invention may be modified and changed to meet particular requirements and the special features ofthe invention may, in some cases, be employed alone or used in different combinations. Various features of the invention may be applied to other than burner uses. Thus the casing need not necessarily be a burner casing or the element which is removably entered therein be an atomizer. The claims are to be construed accordingly andv terms employed are used in a descriptive rather than in a limiting sense, except possibly by state of the tion by said removable element and interconnecting means between said reversely acting check valves for automatically effecting the lifting movement of one when the other is shifted in an opening direction.

2. A support tube of the character disclosed, including a tubular member, a removable element insertible and withdrawable through said tubular member, reversely acting check valves for closing said tubular member upon withdrawal of said removable element, including downwardly swinging oppositely closing valve elements and a lift lever loosely pivoted at the back of one valve element and having lifting engagement with the other valve element.

3. In a burner, a tubular support, an atomizer removably entered in said tubular support, oppositely faced check valves in said tubular support, automatically closing upon removal of said atomizer'and adapted to be opened by insertion of said atomizer, means for protecting said check valves from injury by. said atomizer and including abutment lugs on said check valves disposed within the outlines of the seating faces of said valves and positioned for engagement by said atomizer.

4. A burner support tube of the character disclosed, including a tubular member, an atomizer insertible and withdrawable through said tubular .member, reversely acting check valves for closing said tubular member upon withdrawal of said atomizer, including downwardly swinging oppositely closing valve elements and a lift lever loosely pivoted at the back of one valve element and having a' delayed lost motion lifting engagement with the other valve element.

5. Aburner support tube of the type described, comprising a tubular member, an atomizer insertible in and withdrawable therethrough, multiple check valves for closing said tubular memher upon withdrawal of said atomizer and means for opening one valve from and by the opening 'of the other valve and including a delayed operating connection to allow one valve to remain closedwhen the-other valve is partly opened.

6. Aburner support tube, comprising a tubular casing having oppositely faced valve seats, oppositely swinging valves in said casing cooperable with said valve seats, a lever member at the back of one valve and cooperable with the back of the other valve for effecting opening of the latter when the. first valve is swung open, an atomizer tube insertible into and withdrawable fromsaid casing and adapted to displace the first valve in an' opening direction and a combined guard and guide for said atomizer tube, comprising a web in the intermediate portion of the casing between the valve seats, said web being 'substantiallyconcentric with'saidvalve seats and having an opening through which said lever operates.

7. In a burner, the combination of a casing, an atomizer tube insertible through and withdrawable from said casing and self-closing oppositely acting check valves in said casing pivoted to swing toward each other and a pick up connection between said valves for enabling one valve ,to'open the other reversely acting valve.

8. In combination, a casing,. opposed valve seats in spaced relation therein, downwardly swinging self-closing check valves in said casing reversely cooperable with said valve seats and lever means operable from one of said. valves for lifting the other ofsaid valves. .1 r

9. In combination, a casing, opposed valve seats in spaced relation therein, downwardly swinging self-closing .checkvalves :in said casing reversely cooperable with said valve seats, lever means operable from one of said valves for lifting the other of said valves and including a free swinging lever pivoted at the back of one valve and an abutment on the back of the other valve in position to be engaged by said lever in the upward lifting movement of the same.

10. In combination, a casing, opposed valve seats in spaced relation therein, valves cooperable with said valve seats and pivoted in said casing for swinging movement toward each other, a lever at the back of one of said swinging valves and an abutment on the back of the other valve in position for engagement by said lever.

11. In combination, a casing, opposed valve seats in spaced relation therein, valves cooperable with said valve seats and pivoted in said casing for swinging movement toward each other, a lever at the back of one of said swinging valves, an abutment on the back of the other valve in position for engagement by said lever, said first valve having flanges on the back of the same between which said lever is pivotally guided and said abutment on the back of the other valve including a cross pin and flanges on the back of said other valve spaced to receive between them said lever and carrying said cross pin.

12. In combination, an atomizer tube, a supporting casing having an entrance opening for said tube at one end and having an opening at the opposite end for the projection of said tube, valve seats within said casing about said entrance and projection openings, an inwardly swinging check valve pivoted in said casing to cooperate with said valve seat about the entrance opening and adapted to be swung inwardly into open position by the entering atomizer tube, an outwardly swinging check valve pivoted to cooperate with the valve seat about the projection opening and means operable by the inwardly opening check Valve for swinging open said out wardly opening check valve.

13. In combination, an atomizer tube, a supporting casing having an entrance opening for said tube at one end and having an opening at the opposite end for the projection of said tube, valve seats within said casing about said entrance and projection openings, an inwardly swinging check valve pivoted in said casing to cooperate with said valve seat about the entrance opening and adapted to be swung inwardly into open position by the entering atomizer tube, an outwardiy swinging check valve pivoted to cooperate with the valve seat about the projection opening, means operable by the inwardly opening check valve for swinging open said outwardly opening check valve and means in said casing between said spaced opposed valve seats for guiding said atomizer tube substantially centrally through said casing.

14. In combination, an atomizer tube, a supporting casing having an entrance opening for said tube at one end and having an opening at the opposite end for the projection of said tube, valve seats within said casing about said entrance and projection openings, an inwardly swinging check valve pivoted in said casing to cooperate with said valve seat about the entrance opening and adapted to be swung inwardly into open position by the entering atomizer tube, an outwardly swinging check valve pivoted to cooperate with the valve seat about the projection opening, means operable by the inwardly opening check valve for swinging open said outwardly opening check valve and means in said casing between said spaced opposed valve seats for guiding said atomizer tube substantially centrally through said casing and said valve seats being set back from said passages a distance such that they will not be engaged by the atomizer tube thus guided in its movements through the casing.

15. In combination, an atomizer tube, a supporting casing therefor, opposed valve seats in spaced relation within said casing, oppositely acting check valves cooperable with said spaced valve seats and an intermediate guide for said atomizer tube within said casing between said spaced opposed valve seats.

16. In combination, an atomizer tube, a supporting casing therefor, opposed valve seats in spaced relation within said casing, oppositely acting check valves cooperable with said spaced valve seats and an intermediate guide for said atomizer tube within said casing between said spaced opposed valve seats and including a generally circular web projecting from the inner walls of said casing.

1'7. In combination, an atomizer tube, a supporting casing therefor, opposed valve seats in spaced relation within said casing, oppositely acting check valves cooperable with said spaced valve seats, an intermediate guide for said atomizer tube within said casing between said spaced opposed Valve seats and including a generally circular web projecting from the inner walls of said casing, said web having an opening at the top, a lever projecting from the back of one valve and operating through said opening and an abutment on the other valve engageable by said lever.

18. In a burner, a projecting tubular portion, a removable element sealed in said projecting tubular portion and self-closing reversely acting check valves at the outer end of said tubular portion and automatically operable to close said tubular portion against flow in both directions upon removal of said removable element and means actuated by said removable element upon the insertion thereof in said tubular portion to automatically open both of said check valves, whereby said removable element may be inserted without requiring other manipulation of said check valves.

19. In combination with a tubular member, a removable member entered in said tubular member and removable therefrom, quick releasable clamp means for securing said removable member so entered in said tubular member, endwise engaging means for automatically sealing said removable member to said tubular member when so secured therein and check valves for automatically sealing said tubular member against flow therethrough in both directions upon removal of said removable member from said tubular member and means actuated by said removable member upon the insertion thereof in said tubular member to automatically open both of said check valves, whereby said removable member may be inserted without requiring other manipulation of said check valves.

20. A burner support tube having a tubular portion, a removable element insertable and withdrawable through said tubular portion, reversely acting, self-closing check valves in said tubular portion for automatically closing the same against passage of fluid in either direction upon withdrawal of said removable element, and means actuated by said removable element upon the insertion thereof in said tubular portion to automatically open both of said check Valves,

withdrawable through said tubular portion, re-

versely acting, self-closing check valves in said tubular portion for automatically closing the same against passage of fluid in either direction upon withdrawal of said removable element, means actuated by said removable element upon the insertion thereof in said tubular portion to automatically open both of said check valves, whereby said removable element may be inserted Without requiring other manipulation or opening of said check valves, and means for protecting said check valves from injury by said removable element.

22. A burner support tube having a'tubular portion, a removable element insertable and withdrawable through'said tubular portion, reversely acting, self-closing check valves in said tubular portion for automatically closing the same against passage of fluid in. either direction upon withdrawal of said removable element, and

means actuated by said removable element upon the insertion thereof in said tubular portion to automatically open both of said check valves, whereby said removable element may be inserted without requiring other manipulation or opening of said check valves, and cooperating members carried by said tubular portion and said removable elementfor sealing said removable element in said tubular portion so as to prevent passage of leakage fluid therebetween when said removable element is in place.

ERIC G. PETERSON.

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