US1585775A - Refrigerating apparatus - Google Patents

Description

' May 25, 1526.

K. K. HALL REFRIGERATING APPARATUS Original iled Nov. 24

3 Sheets-Sheet 1 Inventor:

[(eimeZh If. Hall,

May 25 1926. 1,585,775

' K. K. HALL REFRIGERATING APPARATUS,

Original Filed Nov. 24, 1915 3 Sheets-Sheet 2 53 54 Mfiizzeaa: Inventor:

Kenneth If Hall,

May 25, 1926.

K. K. HALL REFRIGERATING APPARATUS qriginal Filed Nov. 24, 191

W-JZM 3 Sheets-Sheet 5 lm eniorz Knneth K. Hall,

Patented May 25, 1926.

UNITED STATES PATENT OFFICE.

KENNETH K. HALL, OF GRAND LEDGE, MICHIGAN, ASSIGNOR, BY MESNE ASSIGN- MENTS, T DELCO-LIGHT COMPANY, OF DAYTON, OHIO, A CORPORATION OF DELA- WARE.

REFRIGERATING APPARATUS.

Application filed November 24, 1916, Serial No. 133,273. Renewed May 27, 1924.

This invention relates to refrigerating apparatus, and particularly to apparatus of the compression type as distinguished from the absorption type.

One of the objects of the present invention is to provide a compact apparatus that is particularly adapted for domestic use or to refrigerators of comparatively small size.

Another object of the invention is to provide a double seal around the drive shaft between the motor and the compressor to insure further against leakage either to or from the compressor.

Another object of the invention is tp provide a support for the apparatus that will also form a casing or housing for the compressor and fan.

Another object of the invention is to provide a support for the condenser that will also form a conduit to carry the air from the fan to the walls of the condenser.

Another object of the invention is to provide a hollow support that is adapted to fit over an opening in a refrigerator and house the compressor within the support and suspend the expansion or refrigerating coil within the refrigerator.

Another object of the invention is to provide a condenser with means for deflecting the cooling air laterally against the walls thereof. I

Another object of the invention is to proide a compressor and condenser with air circulating means whereby the air is first circulated around the compressor and then to the condenser.

Another object of the invention is to provide a novel form of outlet valve for the compressor.

Other objects of the invention will appear from the following description taken in connection with the drawings which form a part of this specification. and in which:

Fig. 1 is in part a vertical section and in part an elevation of a refrigerating apparatus embodying this invention;

Fig. 2 is a plan view of part of the condenser shown in Fig. 1;

Fig. 3 is a horizontal section substantially on the line 33 of Fig. 1;

Fig. 4 is a vertical section on the line 1-4 of Fig. 1;

Fig. 5 is a vertical section and part elevation of another form of the invention; an

Fig. 6 is an elevation view illustrating in detail the shield shown in section in Fig. 5.

Referring to the drawings, 10 represents a refrigerator of any desirable form, having a compartment 11 adapted to receive a refrigerating or expansion coil 12 through an opening 13 in its upper wall. The refrigerating coil may consist of piping as shown, and it is preferably supported by several brackets 14 which in the present illustration of the invention are removably mounted on a support or casing 15 which is set on the top of the refrigerator 10 over the opening 13 above referred to. This support 15 is of hollow form open at the bottom so that its interior is exposed to the interior of the refrigerator. In it is mounted a compressor 16 which is of somewhat unusual and novel form and which is provided with a flange 17 by which it is removably secured to the upper wall 18 of the hollow support.

The support also is formed with an extension or integral ledge 19 upon which is mounted a motor 20 for operating the compressor through a shaft 21 which connects therewith.

On top of the support is mounted a condenser 22 shown in Fig. 1 in the form of coils of piping secured to the support by a bracket 23 and a rod 24 passing centrally through the coils and screwed into the support as at 25.

The form of apparatus shown is designed particularly for use with a refrigerant of low boiling point such as sulphur dioxide (S0,) but the invention is not necessarily so limited. It will be understood that through the various pipe connections shown in the drawings the compressor draws the refrigerant from the expansion coil 12 and compresses it into the condenser 22 Where it is cooled by the cooler air surrounding the condenser or by the circulation of any suitable cooling medium around the condenser pipes. The refrigerant is then expanded by means of a suitable expansion valve 26 into the refrigerating coil 12 where it performs its refrigerating function in the well known manner. The circulation continues as long as the compressor is in operation.

Referring particularly to the compressor 16, the cylinder 27 thereof and the crank case 28 are integral and one side of the crank case is open as at 29 (see Fig. 4) to permit assembly of the parts and inspection, and this opening has a detachable cover plate 30 secured by bolts 31. The compressor is of the two-cycle type having an inlet port 32 which is uncovered by the piston 33 at one end of its stroke only, and an outlet port 34 which is at the extreme head end of the cylinder. An inlet passage 35 and an outlet passage 36 completely surround the cylinder being formed in the wall thereof and these are respectively connected with the expansion coil 12 and the condenser 22 as above suggested. The inlet port 32 is controlled by the piston in the usual way, being opened by the latter at the end of its suction stroke, but the outlet port 34, which is an annular port entirely surrounding the cylinder, is controlled by a ring valve 37. The edges of the outlet port are inwardly beveled or tapered and the ring valve 37 is similarly tapered so that it seats closely on the edges of the port. The valve is preferably made of two split rings having their joints out of coincidence and of spring material tending to coil inwardly to thereby seat firmly on the port edges. The head 38 of the cylinder is formed separately and threaded into the cylinder as shown so that the valve may be easily removed and replaced.

The piston 33 is operated by a connecting rod 39 and crank pin 40 on a worm gear 41 rotatably supported in the crank case on a pin 42. A worm 43 drives the gear 41 and is mounted on a shaft 44 which aligns with and is connected to the shaft 21 of the motor 20 here-lnabove described.

As shown in Figs. 1 to 4, the compressor 16 has an additional casing or housing 45 separated from and surrounding the crank case 28 and it is upon this housing that the supporting flange 17 is formed. This permits of the compressor being assembled as a unit and inserted into the support 15 from the bottom before the support is placed on the refrigerator. This also permits of the use of two stuffing boxes or packings around the shaft 44. Thus there is a packing 46 around the shaft where it passes through the wall of the crank case 28 and a packing 47 where it passes through the wall of the easing 45. Each of these packings may be tightened by a screw cap 48 but only the outer one is accessible except by removing the compressor from its support so that the inner one at least is not likely to be tampered with by a novice.

meagre A comparatively large opening 49 is provided in the side wall of the support 15 where the shaft 21 passes in to meet the shaft 44 and these two shafts are preferably connected by a somewhat flexible joint 50 to take care of any slight misalignmen of the shafts.

The support 15 is also formed with an air chamber 51 shown in the upper part thereof beneath the condenser 22, and the wall of the air chamber under the condenser is perforated or formed with distributingopenings 52. The air chamber communicates with the large opening 49 of the hollow support by means of asuitable conduit 53 which may be formed as an integral part of the support or by a detachable piece 54 as shown in the drawings. This piece 54 in forming this conduit also fills the space between the casing 45 and the side wall of the support so that the air entering the opening 49 will not enter the main interior of the support but will be deflected upwardly into the air chamber 51 and through the openings 52 to the walls of the condenser 22.

For the purpose of thus circulating air as a cooling medium around the coils of the condenser a fan 55 ismounted in the opening 49 and connected to be driven by the motor 20. As shown it is mounted directly on the shaft 44 or on the joint 50 connecting the shaft with the shaft 21. A protecting screen 49 is placed over the opening 49.

Referring particularly to the form of the invention shown in Figs. 5 and 6, it will be seen that the opening 49 permits the air from the fan 55 to directly enter the main interiorfiof the support 15 where it may circulate around and cool the compressor 16. It is prevented from reaching the interior of the refrigerator however, by a partition or plate 5.6 which covers the opening 13 and through which pipes 57 and 58 pass to connect the expansion coil with the compressor and condenser respectively. Joints 59 and 60 in these pipes permit the connections to be made after the plate 56 is in place.

After the air has circulated around the compressor inside the hollow support 15 it passes upwardly and out of the support through an opening 61 in its upper wall to cool the condenser 62 which is mounted on the support.

This condenser 62 is of different form from that shown in Figs. 1 and 2. Condenser 62 has a standpipe 63 which connects with the outlet port of the compressor as shown and the upper end of the standpipe connects through openings 63 with a fluted tank or container in which are a series of plates or disks 64 which are mounted on the standpipe and extend into the various flutes 65 of the tank. The lower part of the tank connects with the expansion valve 26 through the pipe 58 above referred to.

With this form of receiver it will be evident that the cooling medium must pass laterally or horizontally over or against its walls to effect a cooling action and the refrigerant which enters the condenser through the standpipe must pass over the disks (Stand into the flutes of the tank in succession before reaching the outlet end of the condenser. For the purpose of deflecting the air issuing from the opening 61 so that it will pass laterally against the condenser walls, a shield 66 is provided adjacent the condenser 62 partly surrounding the condenser at the sides and top. The air will pass upwardly from opening 61 along the wall of the shield and its only outlet then is laterally through the spaces between the flutes of the condenser.

It will be understood that the parts of the device of Figs and 6, not specifically described, are the same as similar parts in the form shown in Figs. 1 to 4.

It will be further understood that other forms of the invention may be made without departing from the scope hereof.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. In a refrigerating apparatus, th combination with a refrigerator having a top opening, of a casing open at the bottom and supported over said opening and a compressor in said casing exposed to the interior of the refrigerator through said openin 2. In a refrigerating apparatus, the combination with a refrigerator having a top opening, of a casing open at the bottom and supported over said opening, a compressor in said casing and a motor outside of said casing and connected to drive the compressor.

3. In a refrigerating apparatus, the combination with a refrigerator having a top opening, of a casing open at the bottom and supported over said opening, a compressor in said casing, and an expansion coil connected to said compressor and adapted to be inserted into said refrigerator through said opening.

4. In a refrigerating apparatus, the com bination with a refrigerator having a topopening, of a casing open at the bottom and supported over said opening, and a compressor in said casing secured to the upper wall thereof over said openin 5. In a refrigerating apparatus, the combination with a refrigerator having a top opening, of a casing open at the bottom and supported over said opening, a compressor in said casing and an expansion coil connected to said compressor and suspended in the refrigerator from said casing.

6. In a refrigerating apparatus, the combination with a refrigerator having atop opening, of a casing open at the bottom and supported over said opening, a compressor in said casing, an expansion coil in the refrigerator suspended from said casing, a condenser mounted on the casing, and a motor for driving said compressor.

"7. In a refrigerating apparatus, a compressor having a crank case with an open side, a plate to close said open side, a flat support arranged parallel to said plate, and means for attaching said compressor to said support.

8. In a refrigerating apparatus, a compressor having a crank case, said compressor having a driving shaft extending through a wall of said crank case. a casing around said shaft outside of said crank case, said shaft extending through a wall of said casing, and shaft packing around said shaft both on the crank case and at said casing.

9. In a refrigerating apparatus, a compressorhaving a crank case, said compressor having a driving shaft extending through a wall of said crank case, an integral extension of the crank case forming a casing around the part of said shaft extending from said crank case, and shaft packing around said shaft both at the crank case and at the casing.

10. In a refrigerating apparatus, in combination, a compressor, a support therefor, a motor for driving the compressor, a fan driven by the motor, a condenser mounted above the compressor, and air conveying means between said fan and said condenser for causing the flow of air over said condenser surface.

11. In a refrigerating apparatus, in combination, a compressor, a support therefor, a motor for driving the compressor, a fan driven by the motor, a condenser mounted on said support above the compressor, and air conveying means associated with said support for conveying air from said fan to various parts of said condenser.

12. In a refrigerating apparatus, in combination, a compressor, a support therefor having an air chamber with distributing openings in its upper wall, a motor for driving the compressor, a fan driven by the motor, a condenser mounted on said support above said openings, and a conduit to convey the air from said fan to said chamber.

13. In a refrigerating apparatus, in combination, a compressor, a support therefor, having an air chamber with distributing openings in its upper Wall, a motor for driving the compressor, a fan driven by the motor, a condenser mounted on said support above said openings, and a conduit formed in said support, to convey the air from said fan to said chamber.

14. In a. refrigerating apparatus, in combination, a compressor and driving motor therefor, a fan driven b the motor, a support for the compressor, aving an air chamher with distributing openings in its upper wall, a condenser supported above said openings and means for conveying the air from said fan to said air chamber.

15. In a refrigerating apparatus, in combination, a compressor and driving motor therefor, a fan driven by the motor, a support for the compressor having an air chamber \vith distributingopenings in its upper wall, a condenser supported above said open-- ings and having vertical air passages therethrough, and means for conveying the air from said fan'to said air chamber.

16. In a refrigerating apparatus, in .combination, a compressor, and driving motor therefor, a fan driven by the motor, a support for the compressor comprising a casing part surrounding the compressor and an air chamber above the compressor, said air chamber having distributing openings in its upper wall. and said casing having a conduit formed therein leading from said fan to said air chamber.

17. In a refrigerating apparatus, in combination. a casing having a main compartment and an air chamber above said main compartment, said casing also having a conduit leading from one of its sides to said air chamber, a compressor mounted in the main compartment of said casing, a fan mounted in said conduit, a motor for driving said compressor and fan, and a condenser mounted adjacent said air chamber.

18. In a refrigerating apparatus, in combination, a casing having a main compartment and an air chamber above said main compartment, said casing also having a conduit leading from one of its sides to said air chamber, a compressor mounted in the main compartment of said casing, a fan mounted in said conduit, a motor for driving said compressor and having a shaft extending through said conduit and driving said fan therein, and a condenser adapted to receive air from said chamber.

19. In a refrigerating apparatus, in combination, a casing having a main compartment, and an air chamber above said main compartment, said casing also having a conduit leading from one of its sides to said air chamber, a-compressor mounted in the main compartment of said casing, a fan mounted in said conduit, a motor for driving said compressor and fan, and a condenser mounted above said air chamber and adapted to receive air through distributing openings in the top wall of said air chamber.

20. In a refrigerating apparatus, in combination, a casing, a compressor mounted in the casing, a condenser supported outside of the casing. and means for forcing air into the casing and then carrying it to the condenser.

21. In a refrigerating apparatus, in combination, a compressor and driving motor therefor, a fan driven by the motor, a support for the compressor, having an air chamber with a distributing opening in a Wall thereof, a condenser supported above said compressor and in air-receiving relationship with said opening, and means for conveying the air from said fan to said air chamber.

22. In a refrigerating apparatus, the combination with a refrigerator having an opening in the Wall thereof, of a hollow casing open at one side adjacent said opening and supported over said opening and a compressor in said casing exposed to the interior of the refrigerator through said opening.

23. In a refrigerating apparatus, in combination. a compressor, a support therefor, a

motor for driving the compressor, a fan driven by the motor, a condenser, and a conduitformed. in said support for conveying air from said fan to said compressor.

24.. In a refrigerating apparatus, in combination, a compressor, a support therefor, a condenser, a motor mounted on said support, a shaft connecting the compressor and motor, a fan on the n'iot-or shaftand driven thereby, and a conduit associated with said fan and said supportfor conveying air between the fan and the condenser to cool the latter.

25. Refrigerating apparatus comprising a support, a compressor of the reciprocating type mounted thereon and having a rotary shaft, a prime mover having a rotary driving shaft in axial alignment with said compressor shaft and operatively connected therewith to provide a common shaft, cooling means operatively connected with the compressor and adapted to receive compressed refrigerant therefrom, and circulating means mounted on said common shaft between the compressor and the prime mover for causing the circulation of cooling medium about said cooling means.

In testimony whereof I attix my signature.

KENNETH K. HALL.

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