US2859911A - Rotary compressor - Google Patents

Description

Nov. 11, 1958 T. REITTER' 2,859,911

ROTARY COMPRESSOR Filed Sept. 8, 1953 4 Sheets-Sheet 1 INVENTOR. TEODORO REITTEH Nov. 11, 1958 T. REITTER 2,859,911

ROTARY COMPRESSOR 4 Sheets-Sheet 2 Filed Sept. 8. 1953 INVENTOR. TEODORO RE] TTER HIS AT HNEYS' Nov. 11, 1958 T. RElTTER 2,859,911

ROTARY COMPRESSOR Filed Sept. 8, 1953 v 4 Sheets-Sheet :5

INVENTOR. TEODORO REITTER.

Nov. 11, 1958 T. REITTER 2,859,911

ROTARY COMPRESSOR Filed Sept. a. 1953 4 Sheets-Sheet 4 INVENTOR. TEODORO H E ITT ER BYzJA 5,1103%0 & S R

HIS ATT NEYS United States Patent C); Ice

' ROTARY COMPRESSOR Teodoro Reitter, Buenos Aires, Argentina Application September 8, 1953, Serial No. 378,976

Claims. (Cl. 230-147) The present invention refers to a rotative compressor for-general uses which is difierent from those previously known due to the fact that thecompression is effected in a plurality of cells or chambers determined by aseries of separators mounted in a displaceable way on oscillating bolts located respectively in rings. Under such conditions, each of the cells constitutes a compression chamber independent from the rest, which has its corresponding suction, compression and expulsion stage, thus assuring a long and perfect operation.

In order for this invention to be clearly understood, hereunder it will be described in detail, making reference to the illustrative drawings which are attached, in which:

Figure 1 illustrates a section of the compressor of this invention taken on the line AB of Figure 2.

Figure 2 is a section on the line C-D of Figure 1.

Figure 3 is a section on the line E-F of Figure 2.

Figure 4 is a section on the line GH of Figure 3.

In all these figures, the same number indicates a like part.

Referring to the illustrative drawings attached, the compressor of this invention is constituted by a ring 1, inside of which is located the interior ring 2. This last ring is loosely mounted on shaft 3 which revolves on bearings 4 and 5. Said shaft 3 is partially eccentric in the part which engages the interior ring 2, in such a way that the revolving of the mentioned shaft produces, in ring 2, a planetary movement, so that the exterior part of said ring 2 moves following the interior circumferential surface of the exterior ring 1. Both rings 1 and 2 are united by sets of separators, each of these sets being composed of three parts which are indicated with numbers 6, 7 and 8, respectively.

The part indicated by number 6 is a bolt which is situated in a perforation of the exterior ring 1, in such a way that its circumference coincides with the interior circumference of the exterior ring 1, thus allowing the bolt 6 to revolve freely in the perforation. In said bolt 6, is situated partially, all along same, plate 7 which inserts in bolt 8, which has for this purpose a longitudinal slot Where the mentioned plate can displace itself freely. The depth of this slot of bolt 8 is more than double the eccentricity of the shaft which produces the planetary movement of ring 2. The mentioned rings 1 and 2, as well as the separators 6, 7 and 8 are laterally limited by discs 9 and 10, in this Way the spaces or chambers 11, 12, 13, 14, 15, 16, 17 and 18 are formed. These spaces, by the eccentric situation of the interior ring 2 inside exterior ring 1, vary in their volume, as can be clearly seen in Figure 1, where space 11 is larger than space 12, and this one at the same time larger than 13, space 14 being the smaller of the ones drawn. When revolving, shaft 3 determines in the interior ring 2 a planetary movement and during a revolution of 360 the spaces formed between the respective separators vary their initial volume, passing by its stage of maximum and minimum volume.

The spaces 11 to 18 are in communication with the shaft through the perforations 19 and 20, a pair foreach of said chambers, which coincide with the recesses 21 and 22, formed in the shaft 3, which recesses are sep-. arated and communicate at. the same time with the passages 23, 24 of the shaft. Passage 24 of the shaft communicates with the exterior throughhole 25 of thecap 26, while the perforation 23 communicates with the exterior through casing 27 by the hole 28. Shaft 3 eX- tends in the direction of the passage 23 through the casing 27 which'is hermetically closed by means of seal 29. The shaft part which comes out of thecompressor casing connects with the source of power. I 4

The lateral disc 10 has the function of preventingthe rotation of ring 2, without obstructing its planetary movement produced by the eccentricity of the shaft.uDisc- 10 is secured against rotation by locking means 10a (Fig. 2) fitted in cap 26 of casing 27. For this purpose, two or more bolts 6, of ring 1,' are extended as is indicated at 30 and enter partially in slots 31 made in the lateral disc 10. Equally two or more bolts 8- of interior ring 2 are extended as is indicated at 32 and enter into slots 33 of the mentioned disc. These slots of the lateral disc 10, if extended would cross at an angle of Recesses 22 and 21 on the eccentric part of shaft 3 are made in such a way that when the shaft 3- revolves clockwise recess 21 communicates withthe passages 19, only inthe spaces formed between rings. 1 and 2, limited by sep5- arators 6, 7 and 8 from its minimum volume until they reach the maximum volume, while recess 22 communicates with passages 20, only in the part of spaces or chambers limited by separators 6, 7 and 8, from its maximum volume until reaching its minimum volume.

The operation of the device is, as follows:

If shaft 3 revolves clockwise, the interior ring 2 moves around the interior surface of exterior ring 1, as a consequence of this, space 15 is made larger, which increases progressively the volume of spaces 16, 17 and 18 and reaches its maximum when the shaft has revolved As during this part of the rotation of the shaft 3, space 16 has been in communication (through passage 19, re cess 21 and passage 23) with the entrance 28 and the compressor has sucked the gas or liquid, during this period passage 20 has at the same time been closed by shaft 3. The shaft continuing its .rotation, space 16 begins to reduce its volume until reaching its minimum. During this time, passage 19 is obstructed by shaft 3, while passage 20 is in communication (by means of recess 22, through hole 24) with the outlet 25, compressing and expelling the gas or liquid by said outlet 25. During all this operation, lateral plate 10 will have followed the planetation of interior ring 2, guided by bolts 6 and 8, avoiding the revolving of interior ring 2.

It is understood that the present invention is not limited in any way by the described and represented example, but that in same could be introduced several modifications of form and/ or details, which will be included within the scope of this invention.

This invention having been described as well as the way in which to make it, it is declared that what is claimed as the exclusive property and invention is the following:

1. A rotative compressor, comprising the combination of a casing in which is housed an exterior ring having a cylindrical inner annular wall and an interior ring of an outside diameter substantially less than that of the annular wall of the exterior ring to provide a main chamber between said rings, eccentric means connecting with the two rings for dividing the main chamber into a plurality of independent chambers, oppositely disposed discs for cooperating with said rings for enclosing the main chamber formed between them, a rotary shaft provided Patented Nov. 11,

3 r with an inelt and outlet on which said interior ring is journaled, means on the shaft for separating the inlet and outlet, radial perforations extending through the interior ring and being longitudinally disposed for connecting each of the independent chambers with recesses formed in the shaft leading" to. the inlet and outlet therein for providing a comrnu icating passage from the inlet and outlet to said independent" Chambers, and means on said shaft for cans ing planetary movement of the interior ring and opening some of the longitudinally disposed radial perforations while closing others of said longitudinally disposed perforations.

2. The rotative compressor of claim 1 in which the longitudinally disposed radial perforations are openedv when the respective chambers for said perforations are opened to their maximum capacity and closed when the chambers are closed to their minimurn capacity.

3. The rotative compressor of claim 1 in which said means on the shaft for-opening and closing the 'pe'r'forations is a cam surface.

4. m rota-tive' compressor of claim 2' in which said means on the shaft for opening and closing the perforations is a cam surface.

5. A rotative compressor, comprising the combination of an exterior ring, an interior ring, a rotative shaft passing through the interior ring and having an eccentric portion, which determines the formation, between the'two rings, of a free space, said compressor characterized by the fact that said space between the rings is subdivided into a plurality of independent chambers, susceptible of connection alternatively with the entrance and outlet of the compressor, said chambers being formed by plates which extend between bolts situated in one ring and another, aligning the ones of 'onering with those" of the other, and separate passages formed in the shaft, one passage connecting the entrance opening of the compressor and the other passage connecting the outlet opening of the compressor with the space between said rings, and each of said chambers communicating through two perforations made in the interior'ring with recesses made in the shaft, which. at the same time communicate, through the passages in the shaft, with the entrance and outlet openings ofthe compressor.

References Cited in the file of this patent UNITED STATES PATENTS 448,334 448,335 Gollings Mar. 17, 1891 879,213 Tew Feb. 18, 1908 1,197,578 Jackson Sept. 5, 1916 1,263,550 Gollings Apr. 23, 1 918; 35 9 o ns n g 1 1 20. 1,361,046 Gollings Dec. 7, 1920 1,323,245 D v d ---.-.--.--v O 29; 3 1, 935,0 96 Muller Nov. 14,- 1933 1,941,651 Behlmer Ian. 2, 1934. 2,029,554 Berggren Feb. 4;, 1936 FOREIGN PATENTS 50,409 France Mar. 12, 1940 (1st addition to 854,050) 565,429 France Nov. 7, 1 923 835,121 Germany Mar. 27, 1952 854,050 France Ian. 2, 1940 Gollings Mar. 17, 1891 5

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