US2028131A

US2028131A - Valve construction

Info

Publication number: US2028131A
Application number: US639904A
Authority: US
Inventors: Paul F Berry
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-10-27
Filing date: 1932-10-27
Publication date: 1936-01-21
Anticipated expiration: 1953-01-21

Description

Jan. 21, 1936 P. F. BERRY VALVE "CONSTRUCTION Original Filed 001:. 27, 1932 UNITED STATES PATENT OFFICE VALVE CONSTRUCTION Paul F. Berry, Columbus, Ohio Application October 27,1932, Serial No. 639,904 Renewed June 18,1935

I 4 Claims.

This invention relates to a valve construction,

and it is an object of the invention to provide a construction of this kind comprising two relatively movable rock members operating in required sequence one with respect to the other to allow for the desired intake or exhaust of a fluid.

It isalso an object of the invention to provide a'structure of this kind which is particularly applicable for use in connection with small units such as the compressor units of refrigerating apparatus.

Another object of the invention is to provide a Valve construction of this kind for use in connection with a compression cylinder or the like and which construction operates in a manner to assure substantially full effective strokes of the piston reciprocating within the cylinder and more particularly the suctionstroke of the piston.

The invention consists in the details of construction and inthe combination and arrangement of the several parts of my improved valve construction whereby certain important advantages are attained and the device rendered simpler, less expensive and otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth.

The novel features of myinvention will hereinafter be definitely claimed.

constructed in accordance withmy invention and in applied position in connection with a compressor;-

Figure 2 is a view partly in section and partly 'in side elevation of one of the valve members as herein embodied together with the associated operating means therefor, certain of the ports comprised in the valve structure being indicated by 1 broken lines;

Figure 3 is a fragmentary view partly in elevation and partly in section illustrating the valve members in position for intake into the compression cylinder;

Figure 4 is a view in plan of the face of one of the valve members coacting directly with the compression cylinder;

Figure 5 is a view in elevation of the inner face of the second Valve member.

denotes a drive shaft upon which is mounted for 5 rotation therewith a disc 2 provided in each of As disclosed in the accompanying drawing, I

in such figure.

its sider'faces with the cam groove 3, said cam grooves being of similar formation butin reverse relation. One of the grooves 3 is indicated by full lines in Figure 2 and the other by brokenlines 5 The shaft! also operates to actuate a compressor piston 4 operating in a cylinder 5. The Wall 6 separating the cylinder 5 and the suction chamber C is formed with a flat face 1 against which operates one of the rocking or 10 oscillating valve members B. With the outer face of thevalve member 8 contacts a second rocking or oscillating valve member 9. These members 8 and 9 are mounted for rocking or oscillating movement about a common axis and herein dis- 5 closed as apin l0 bridging the space between the flat face'l o f the wall 6 and the block II. The block I I is slidably mounted within the cylindrical guide sleeve l2 extending within the chamber C through the outer wall It thereof. This block H is chambered, as at I5, and is provided with a port I6 for coaction with a port ll disposed through the valve member 9. The outer end of the. chamber 5 communicates with the interior of a bellows like metal structure I8 which is sealed or otherwise effectively connected to the block II at its inner end and at its outer end is sealed or otherwise effectively connected to a plate l9 closing the outer end of the opening 20 through the wall l4 through which the guide sleeve I2 is directed. This plate 19 has connected thereto a discharge line 2| for communication with the interior of a condenser (not shown) and after the fashion shown in Patent #1,'799,449 dated April' 'l, 1931 and with which type of refrigerating apparatus the valve construction as herein disclosed is particularly intended to be used.

The pressure generated within the bellowslike structure l8 will cause the same to expand 40 forcing the block I I against the valve member 9, the valve member 9 against the valve member 8, and the valve member 8 against the flat face '5 thus assuring a perfect seal.

The valve member 8 isprovided therethrough with a port 22 for register with the port I! and which port 22 is also adapted to be brought into register with a port 23 extending through the wall 6 and opening into the cylinder 5 inwardly at all times of the piston 4 working therein. The face of the valve member 8 which contacts with the flat face I of the wall 6 is provided with a channel or groove 24 intersecting the port 22 and which is adapted to afford communication with the port 23 when theport 22 of the member 8 is to one side of said port 23. The port 22 is also adapted to register with a radially disposed groove or channel 25 provided in the inner face of the valve member 9 and opening through the periphery of said valve member 9.

The registration of the port 22 with the groove or channel 25 occurs when the port 22 has been moved a predetermined distance to one side of the port 23 and during which time the groove or channel 24 is in communication with the port 23 so that upon the suction stroke of the piston i the gas and/or vapor within the chamber C will be drawn into the cylinder 5 through the groove or channel 25, the port 22, the groove or channel 24 and the port 23. During this operation the valve members 8 and 9 will be in the position as illustrated in Figure 3 to bring the ports 22 and I! out of register.

When the ports I"! and 22 are in register the gas and/or vapor compressed within the cylinder5 will pass out directly through the ports 23, I! and 22 and through the port [6 to the line 2|.

Overlying the side faces of the disc 2 are the

arms

26 and 26 each of which having a part 21 as indicated by broken lines in Figures 1 and 2 riding in the cam groove 3 of the adjacent side face of the disc 2. These

arms

26 and 26 are disposed on such angle to assure the desired rocking movement of the arms in proper sequence as determined by the grooves 3. These

arms

26 and 26, as herein disclosed, are suspended for rocking movement from a pin 28 supported at a desired point above the disc 2 and the mounted extremities of the arms 26 and 26' are continued by the arms 29 and 29. each having requisite operative connection, as at 30, with one of the valve members 8 or 9.

In the operation of a refrigerating apparatus and especially of the type as particularly disclosed in Patent #1,799,449 hereinbefore referred to, oil evaporated inthe course of operation of the machine will become intermingled with the gas drawn into the suction chamber C and with the groove or channel 25 in register with the port 22 and the passageway 24 in communication with the port 23, the gas and oil vapor will pass into the cylinder 5 upon the intake stroke of the piston 4. When the piston 4 has substantially reached the end of its intake stroke, the cam grooves 3 will eifect through the arms 26 and 26' a reverse movement of the arms 29 and 29 also resulting in a reverse rocking movement of the valve members 8 and 9 to the positions illustrated in Figure 3 and in which positions the valve members 8 and 9 efiectively seal against flow through theport 23.

Upon the rising or reverse stroke of the cylinder 5 the gas and/or vapor within the cylinder will be compressed and this compression action will take place until the piston 4 has substantially completed its compression stroke whereupon the cam grooves 3 will effect a reverse rocking movement of the valve members 8 and 9 to bring the ports ll and 22 in'register with each bers'8 and 9 assure an efiective functioning of the piston 4 throughout substantially the entire length of each of its cycles.

From the foregoing description it is thought to be obvious that a valve construction constructed in accordance with my invention is particularly 5 well adapted for use by reason of the convenience and facility with which it may be assembled and operated, and it will also be obvious that my invention is susceptible of some change and modification without departing from the principles 10 and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice except as hereinafter claimed. 15

I claim:-

1. In a pump, in combination, a pair of rock valves arranged side by side and a seat for one of the valves, said seat having a port, means for axially supporting the valves, elastic means for urging the valves one toward the other and toward the valve seat, means for reversely rocking the valves in timed sequence, said valves having ports in register with each other and with the port of the valve seat upon rocking movement of the valves in one direction, said ports being out of register upon movement of the valves in their opposite directions whereby flow through said ports is closed, one of said valves having a passageway registering with the port of the valve 30 seat when the ports of the valves are out of register, said passageway also communicating with the port of the second valve when the ports in both of the valves are out of register, and an inlet passageway carried by said second valve register- 35 ing with the port of the first valve when the ports of both valves are out of register.

2. A pump comprising, in combination, a pair of valve members arranged side by side, a seat for one of the valve members, an axial support for 40 the valve members, said valve members having movement along said support, said seat having a port and each of the valve members having a port therethrough, the ports of the valve members being adapted to register with each other and the 45 port of the valve seat, means forlrocking said valve members one with respect to the other to position the port of one of the valve members to one side of the port of the second valve member whereby flow is closed through the valve mem- 60 bers, opposed portions of the valve members having passageways in communication with each other and with the port of the valve seat and the port of one of the valve members when said valve members are in a position to close flow 56 therethrough, means for rocking the valve members in timed sequence, and means for urging the valve members toward the valve seat.

3. A pump comprising, in combination, a pair of valve members arranged side by side, a seat for 60 one of the valve members, an axial support for the valve members, said valve members having movement along said support, said seat having a port and each of the valve members having a port therethrough, the ports of the valve members being adapted to register with each other and the port of the valve seat, means for rocking said valve members one with respect to the other to position the port of one of the valve members to one side of the port of the second valve member whereby bers are in a position to close flow therethrough,

means for rocking the valve members in timed sequence, and elastic means for urging the valve members toward the valve seat.

4. A pump comprising, in combination, a pair of valve members arranged side by side, a seat for one of the valve members, an axial support for the valve members, said valve members having movement along said support,,said seat having a port and each of the valve members having a port therethrough, the ports of the valve members being adapted to register with each other and.

the port of the valve seat, means for rocking said valve members one with respect to the other to position the port of one of the valve members to one side of the port of the second valve member whereby flow is closed through the valve members, opposed portions of thevalve members having passageways in communication with each 5 other and with the port of the valve seat and the port of one of the valve members when said valve members are in a position to close flow therethrough, means for rocking the valve members in timed sequence, and. means for urging the 10