US1307061A - Comhbessob - Google Patents

Description

E. 0. OLSEN. COMPRESSOR FOR REFRIGERATI NG APPARATUS.

APPLICATION FILED DEC. 26. 19!?:

1,80%61 Patented June 17, 1919.

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Z7 WW 1-0 E. 0. OLSEN. COMPRESSOR FOR. REFRIGERATING APPARATUS.

APPLICATION F ILED DEC- 26.1917- Patent-ed June 17, 1919.

2 SHEETS-SHEET 2- the upper end of the cylinder.

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nnwntb. OLSEN, OF'MILWA'UKEE, Wisconsin, .essrenon. crown-rovers ro FREDERICK M '1' GGRAFF, ONE-FOURTH TO TR MARGGMFF, GHE- FOURTH T0 VE'Y MARGGRAJF, ALL OF MILWAUKEE, WISCONSIN.

oonrnnsson ron nnrni'ennarine Arranaros.

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Specification otLett'ers Patent. Patented Ji m e 1W 3919,

Application filed December 26, 1917. Serial Ito. 203,846.

To all whom it may concern:

Be-it known that I, EDWIN OLSEN, a

sists in the combination and arrangement of.

the parts as more fully hereinafter described. v

' The invention is further designed to provide a compressor in which the inlet valve is formed by the piston which opens and closes the inlet port during its movement.

-The invention also has for itsobjectto introduce the refrigerant into the compression cylinder upon the top of thepiston and to deliver it through a single va ve at The invention is further designed tO PI'O- vide a valve seat for the outlet valve which may be readily removed for the purpose of renewal.

The invention further consists in the several features hereinafter set forth.

In the drawings:

Figure 1 is a vertical sectional view through the device embodying the invention, the section being taken on the line 1-1 of Fig. 2;

Fig. 2 is a section taken on the line 22 of Fig. 1;

Fig. 3 is a section taken-on the line 33 of Fig. 2. v

The compressor comprises a crank case. 4 having a removable end plate 5 secured thereto by bolts 6, the bottom being sealed by securing the base 7 to a suitable support (not shown), a cylinder 9 integral with said.

crank case, a piston 10 within the cylinder, a crank shaft 11 journaled in bearings 12 mounted in the crank case, means for operatively connecting said piston to the crank shaft, and other parts more particularly hereinafter described.

The means for connecting the piston 12 to the shaft '11 consists of a pitman 13 pivotally .crant gas which may wor crank case.

An annular rece1ver:or refrigerant chamconnected at one end the shaft 11 and at its other end to a pin 14 secured within the piston by set screws 15, the piston having a hollow interior portion 16. The worki'n face or top of the'piston has a cylindrica recess 17 therein communicati opening 18 leading into its, interior 16 said openmg having a valve seat 19 upon which with an rests a ball or check valve 20 whiohis limited in its upward movement by an annular grid 21 secured within the recess 17. This check valve opens when the piston is moving down so as to prevent the formation of a vacuum in the cylinder above the piston and also to permit the outward passage if relfrig- I into t e c ber 20 is formed integral with the cylinder and surrounds a portion of the same. It is provided with an inlet 23 and an outlet port 24 which is so positioned as to allow the refrigerant in the chamber to enter the cylinder when the piston has moved down to its piston whenit moves upwardly, the piston thus performing the functions of an inlet valve.

The upper part 25 of the cylinder is provided with a water jacket 26, part of which is formed integral with the cylinder' and the other part is formed by a head 27 which is removably secured to the main portion ofthe compressor by bolts 28'. The cooling water passes from a pipe 29 into the jacket and out througha pi e 30.

Within the head 2 and formed integral therewith is the cylinder head. 3'1 having an outlet conduit 32 leading therefrom, said head being surrounded by the water jacket 26.

lowerp'osition and which is closed by the The top of'the cylinder is provided with a cylindrical recess 27 in which a valve seat 28 is, removably secured by clamping it between said cyllnder and the head 27. The connection between thehead 27 and the cylinder and outer jacket walls 26 is made tight by providing annular recesses 33 and 3t in the cylinder and outer jacket wall, respectively, into which tit acking rings 35 and 36 and annular ribs 3 and 38 on the head27.

Seated upon the seat 28 is an outlet valve 39, the stem. 40 of which is slidably mounted wit its

in a bore 41 in the cylinder head, the valve being held to its seat by spring 42 interposed between it and the head 31." To prevent the refrigerant working up into the space above the valve stem and increasing the pressure upon the same a by-pass 43 is provided in the stem establishing communication between the cylinder head and the portion of the bore 41 above the valve stem. A purge cock 44 is mounted on the head in communication with the bore 41 to which a hose (not shown) may be attached to draw oil. the refrigerant when desired.

The compressor may be driven by a suitable source of power connected to the crank shaft 11 and in the present instance I have shown a fly wheel 45 on the shaft carrying a belt 46 which is adapted to be connected up to an electricmotor (not shown).

The working parts of the compressor are kept well oiled by introducing oil in the crank case through a suitable inlet and al-. lowing it to partially fill the same, the oil passing out through a suitable outlet in said case in the usual manner.

With this construction the refrigerant gas in the chamber 20 passes and is sucked into the cylinder'9 above the piston 10 through the port 2 L when the piston moves downwardly to uncover said port. During its downward travel the ball valve 20 is raised from its seat soas to establish communication between the upper portion of the cylinder and the crank case to prevent, the formation of a vacuum in that portion of the cylinder in front of the piston. During the upward stroke of the piston the port 2 k and valve 20 are closed by the piston and the refmgerant is then compressed in the'cylinder between its head and the piston. \Vhen the desired pressure has been reached, that is, when the gas has been liquefied, the resistance of the spring 42 is overcome and the valve'39 opens-t0 permit-the passage of .the liquid refrigerant into the cylinder head passes out through the chamber provided with an inlet and an outlet communicating with the cylinder, a piston in said cylinder adapted to open and close said outlet, a head-section secured on the cylinder and formed with a cylinderhead provided with an outlet conduit, an outlet valve mounted in the head-section to control the flow of the refrigerant from the cylinder to the head outlet, said outlet valve being provided with a stem slida-bly mounted in a .bore formed in the head-section, and said stem being provided with a by-pass to establish communication between the space above the outlet valve and the space above the valve-stem, and a normally closed purgecock' connected to the valve-stem bore to draw off the refrigerant when desired.

In testimony whereof, I aflix my signature.

EDWIN o. OLSEN.

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