RU1813920C - Rotary-piston compressor - Google Patents

Abstract

SUMMARY OF THE INVENTION: A piston with a rod is mounted in the cylinder with the possibility of rotational-translational movement. The drive shaft is rotatably mounted in the housing coaxially with the piston. . The first insert is installed in the cylinder, which is rigidly fixed to the cylinder cover with suction and discharge valves. The second insert is rigidly fixed to the piston. The sleeve is mounted on the side of the second insert. At the ends of the inserts, the piston and the sleeve, cam profiles are made with the possibility of interaction with each other. The stem is reciprocally coupled to the shaft. The sleeve is mounted with the possibility of reciprocating movement and is pressed against the profile of the second insert relative to the housing by a spring. The cam surfaces of the first insert and the sleeve are parallel, the piston and the second insert are mirror symmetric, 1 il.

Description

The invention relates to a compressor construction and can be used to produce compressed gas in gas supply, air conditioning and refrigeration systems. for other equipment.

The purpose of the invention is to reduce costs. manufacture by reducing requirements for manufacturing accuracy.

The drawing shows the described rotary piston compressor at the end of the injection process.

The device consists of a cylinder 1, on which an insert 2 with a profile end face 3 and shut-off valves 4 and 5 is fixed. A cover 6 with a suction and discharge nozzles 7 and 8 is mounted on insert 2. A piston 9 with a profile surface 10, equipped with a rod 11, is located in cylinder 1 on which the second

profile insert 12. Insert 12 is supported on the sleeve 13 with a profile surface 14 parallel to the cam profile 3 of the insert 2. The sleeve 13 is mounted axially movable and preloaded by the spring 15. The rod 11 is axially connected to the drive shaft 17 by a key 16. mounted on cylinder 1 using a bearing 18 and a cover 19.

Consider the operation of the compressor from the moment of the end of the injection - the piston 9 is in its highest position and its surface 10 is completely supported by the end face 3 of the insert 2, the surface of the insert 12 is in contact with the surface 14 of the sleeve 13 only at the upper point, the discharge valve 5 is open (see .ris). When the drive shaft rotates 17

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the piston 6 runs around the end face 3 of insert 2 with its cam profile 10, and the insert 12 of the rod 11 rolls around the surface 14 of the sleeve 13 - the piston 9 moves down, the pressure above the piston drops, the pressure valve 5 closes and at some point in time the suction valve 4 opens, the cavity above the piston filled with a working medium. At the end of the suction process, the piston 9 is in its lowest position and its surface 10 is in contact with the end face 3 of the insert 2 at only one point, and the insert 12 of the rod 11 is fully supported on the surface 14 of the sleeve 13. In this case, the sleeve 13 practically does not change its position along the axis of the cylinder and, accordingly, the compression force of the spring does not change.

At the next point in time, the piston 9 moves upward, the suction valve 4 closes, and at a certain point in time, depending on the pressure in the discharge pipe 8, the valve 5 opens. Next, the processes are repeated.

The advantages of this rotary piston compressor are its simplicity of design, reliability, and high compactness due to the absence of a crank mechanism.

Claims (1)

The claims A rotary piston compressor comprising a housing with a cylinder, a cylinder cover with suction and discharge valves, a piston with a rod mounted in the cylinder with the possibility of rotational-translational movement, the drive shaft mounted in the housing coaxially with the piston is rotatable, while in the cylinder there is a first insert, rigidly mounted on the cover, a second insert, rigidly mounted on the piston, and a sleeve mounted on the side of the second insert, moreover, on the ends of the inserts of the piston and sleeve made cam profiles with the possibility of interaction with each other, and the rod is connected to the shaft with the possibility of reciprocating movement, characterized in that one hundred in order to reduce manufacturing costs by reducing the requirements for manufacturing accuracy, the sleeve is mounted with the possibility of reciprocating movement and pressed against the profile of the second insert relative to the housing by a spring, while the cam surfaces of the first insert and the sleeve are parallel, and the piston and the second insert are mirror symmetric .