USRE14885E - Ice-machine - Google Patents

Description

H.l E. WILLSIE.

l Ich MACHINE. APPLlcAmN man ma. 1|. |920.

ReissuedJun15,1920. Y j ,l 14,885.

I Q EW T25. f Q 5E-52" than `the evaporator.

UNITED STATES PATENTv OFFICE.

HENRY E. WILLSIE, F DARIEN, CONNECTICUT, ASSIGNOR TO THE AMERICAN BEFRIG'ERATION COMPANY, A CORPORATION OF NEW JERSEY.

ICE-MACHINE.

Supeccation of Reissued Letters Patent. Reissued June 15, 1920 Original No. 1,290,455, dated January 7, 1919, Serial No. 823,066, led March 7, 1914. Application for reissue led `March 11, 1920. Serial No. 365,040.

an ice making and refrigerating apparatus suitable for domestic use, .and to this end I have made my invention so simple to operate that no especial skill or knowledge of refrigeration machinery is necessary to use it successfully. Another object of my invention is to eliminate the parts, usually found in apparatus of this general type, which are liable to get out of order and to use devices of great certainty of action. Another object is to provide means for draining into' the still-absorber when it is at a higher level Another object is to air insulate the evaporator during the heating period. Y

I attain these objects by the mechanism i such as shown in the accompanying drawing, in which, Figure 1 is a diagrammatic side elevation and partial section of the machine; Fig. 2, an end elevation, partly sectional, of the same; Fig. 3, a vertical section through the ice water drain and a portion of the refrigerator; Fig. 4, a vertical cross section through the refrigerator and ice pan; and Fig. 5, a vertical diagram of a modification of the still-absorber. y

Similar characters refer to similar parts. The Ioperation of my machine is as follows: A still-absorber, 10, filled with aqua f ammonia to about the level of the dotted line a, is heated for instance by a blue flame oil stove 11, thus driving ammonia gas through the pipes 13, 14, 15, 16,the evaporator, 17 ,the pipe 18, into the condensing coil 19, where the gas is liquefied. The rectifier and the coil 19 arey submerged in cooling water contained in the tank 21. When the fuel inthe reservoir 12'burns out, allowing thestillabsorber to cool and its pressure to decrease the liquid ammonia in the coil 19 is forced up pipe 1,8 into the eva orator 17.

The returning gas forms columns of liquid in both pipes, 14, 22, and pipe 22 being shorter than p1pe 14 all excess of liquid, not

pipe 14 and4 in the bottom of thev trap,

is forced up pipe 22 into the still-absorber. A pocket 13a may be provided as additional precaution against return flow. The pipe 22 havingbeen emptied of liquid and a column of liquid still remaining in pipe 14, the returning gas flows through pipes 22 and 24 into the circulating pipe 25 where the gas is absorbed, by weak li uor enterin through the opening 2,6 and pgssing up pipf 25 in the lower part of the tank 10.

The ice p an 27, h-avingbeen filled with water, or brine, to a level above the bottom of the evaporator 17, a mass of ice is frozen about the 'evaporator' and the water in the y pan chilled to a refrigeratinr tem erature. The bottom of the sheet metal pan I2`)7 form's the top of the food chambers 28, 28.v Thus the food chambers. are chilled by heat passing through the sheet metal bottom into the chilled water or ice. When the machineis again started by lighting the stove 11, the elbow 29 is turned down so as to drain water out of the pan 27 to a level below the bottom of the evaporator, thus surrounding the evaporator with an air space. Theice, 30, f alls 'away from the evaporator and continues to chill the water in the pan 27 while the warm gas is passing through into the condenser. For refilling the pan 27 water is poured into the upturned elbow 29. Instead of removing the water from the pan 27 the whole pan may be lowered.. Or the pan may be pivoted at 32 and tilted up by the toggle joints 31, 31, during the freezing period, so that the pan bottom is in the posi-l tion'shown by dotted line 27%,'thus iowing water about the evaporator. During the heating period, the pan 27 is leveled, as shown in'Fig. 4, lowering the ice and water, or brine, away from the evaporator.

The refrigerator is divided into compartments 28 by the partitions 28, 28, and also has doors, as 28".

The condensing coil has but one openin at the bottom, and the capacity of the coil may be increased by an enlargement or tank, 20, connected to. its upper end, but such enlargement is substantially a part of the coil. This arrangement increases the efiiciency of the coil.

The valve 36 in pipe 36 mayr be opened to drain water from the evaporator into the trap 23. The casing 37 about the still-absorber is provided with a door 37 a, hinged at 37h, 37h, which may be opened to cool thev still-absorber. In Fig. 5 the function of the pipe 25 is similar to that of pipe 25, and the opening 26* acts as does the opening 26.

The tank 10 is referred to in some of the claims as a still-absorber, and in some of the claims as a generator absorber. The pipe 15 is referred to in some of the claims as a rectifier. The evaporator 17 is referred'to in some of the claims as a refrigeratingv member. The coil 19 is referred to in some of the claims as a condensing member.

What I claim and desire to Ysecure by Letters Patent,-is:

1. In an ice machine, a condenser, 4an evaporator located above said condenser and connected therewith through a single pipe, a still-absorber located above said evaporator and adapted to contain a liquid, a trap pipe, a still-absorber located above said evaporator and adapted to contain a liquid, a trap located below said evaporator and connected therewith so that liquid may flow from said evaporator to said trap, two pipes leading from said trap and discharging one above and the other below the surface of the liquid in said still-absorber, and means whereby gas flowing from said stillabsorber is made to fiow through said first mentioned pipe and gas returning to said still-absorber is'made to fiow through said second mentioned pipe.

3. In an ice making machine, the combination of a condenser, an evaporator, a stillabsorber at a higher level than the evaporator, all connected in an operative cycle, a trap in the connection between the evaporator and the still-absorber, and a pipe connecting the trap with the still-absorber.v

4. In an ice making machine, the combination of a'condenser, an evaporator connected to the condenser, a still-absorber at a higher level than the evaporator, a trap connected to the evaporator, mea-ns for draining the evaporator into the trap, and a pipe connecting the bott/om of the trap with the still-absorber.

5. In an ice making machine, the combination `of a condenser, an evaporator con-- nected to the condenser, a still-absorber at amember,

"last mentioned communicating means havthe bottom of the trap with the top of the still-absorber, and a pipe,v connecting the trap with the bottom of the still-absorber.

6. In an ice making machine the combination of a still-absorber, an evaporator connected to the still-absorber, a coil closed at the top, a pipe connecting the bottom of the coil with the evaporator.

7. In an ice making machine, the combination of a tank for cooling water, a condenser closed at its top and located within said tank, an evaporator connected with the bottom of said condenser, a still-absorber, a rectifier connected with the evaporator and with the still-absorber, and means for draining the rectifier into the still-absorber.

8. In an ice making machine, the combination of a tank for cooling water, a coil closed at the top within said tank, an evaporator connected to the bottom of the coil, a still-absorber, a rectifier within said tank connected to the evaporator and to the stillabsorber, and means for draining the rectifier into the still-absorber.

9. In an ice making machine, Athe combination of a tank for cooling water, av coil closed at the top within said tank, an evaporator connected to the bottom of the coil, a still-absorber at a. higher level than the evaporator, a rectifier at a lower level than the evaporator and connected to the evaporator and to, the still-absorber, and means for draining the rectifier into the still-absorber.

10. In refrigerating apparatus of the ab-I sorption type, the combination of a generator-absorber, a refrigerating member, a con- ,densing member below said lefrigerating communicating means between' said generator-absorber and refri rating -member and commumcaxting means etween said condenser and refrlgeratmg member.

11. In refrigerating apparatus of the absorption type, the combination of a generator-absorber, a refrigerating member, a condensing member below said lefrigerating member, communicating means between said generator-absorber and refrigerating member and communicating means between said condenser and refrigeratingmember, saiding its discharge and intake end terminating near the bottom kof said condensing member. 1

12. In refrigerating apparatus of the absorption type, the combination of a genera.- tor-absorber, a refrigerating member, a condensing member below said refrigerating member, communicating means between said generator-absorber and refrigeratng member and communicating means between said condenser and refrigerat' member, said last mentioned communicat means being independent of the commumcating meansbetween said generator-absorber and refrigerating member whereby the refrigerant is cause to pass from the generator-absorber to said refrigerating member and thence to the condensingy member when the generator-absorber is heated and from the condensing member to the refrigerating member and back tothe generator-absorber when said generator-absorber is cooled.

13. In refrigerating apparatusof the absorption type, the combination with a generator-absorber and a refrigerating member of a condensing chamber having a single common inlet and outlet located near the bottom thereof and in communication k with said refrigerating member and communieating means between said refrigerating member and generator-absorber,

14. In an ice maklng machine, a stlllabsorber, an evaporator, a condenser, a plpe connecting the still absorber to the top of the evaporator, and a pipeconnectingthe top of the evaporator to the bottom of the Vcondenser to form the operative connections between the still-absorberand the condenser.

15. In an ice machine, the combination of an evaporator, a tank adapted to contain cooling water, a condenser within said tank, a single ipe connecting with said condenser, and lea ing `from the bottom thereof to the top of said evaporator, a still-absorber, a pipe connectingthe top of said evaporator with said still-absorber and through which gas may flow from and return to said stillabsorber, absorber.

16. In an ice making machine, the combination of a still-absorber, an evaporator, a condenser, a pipe connectin the bottom of the condenser withl the top o the evaporator, and a pipe connectin the top of the evaporator with the still-a sorber; the said pipe connections being adapted to conduct gas from the still-absorber throu h the evaporator to the condenser, and rom the conand means for heating said stilldenser through the evaporator and back to the still-absorber. Y

17. The combination of a still-absorber, a water cooled trap', a water cooled condenser, a connection between the vupper part of the still-absorber andthe lower` part of the trap,

. said a refrigerating member, a connection betweenthe upper part of the refrigerating member and the upper part of the trap, a connection between anintermediate portion of said trap land the lower part ofthe stillabsorber, and a connection between the upper part of the refrigerating member and the lower part of the condenser, said trap being below the still-absorber and the connectlon between the trap and the still-absorber having one leg which extends above the still-absorber.

18. The combination of a still-absorber, a

4trap connected to the upper and lower parts ofthe still-absorber, a refrigerating mem ber, a connection between the upper art of said trap and the upper art of sai refrigerating` member, an in ependent drain connection between the upper part of said trap and the lower part of said refrigerating member, a condenser and a single pipe connection between the upper part of the refrigerating member and t condenser.

l19. The combination of a` still-absorber, a refrigerator, arectifier located below said ey lower part of still-absorber and connected to the upper and lower portions of the still-absorber, portions of said connection extending above the stillabsorber, a condenser, a connection between said refrigerator and saidl condenser, and a connection between said refrigerator and said rectifier. 'a

20. .In an ice machine, the combination of a still-absorber, a condenser, an evaporator connected between the still-absorber and the condenser, said condenser having a single pipe communicating with one of its ends to the evaporator, through which pipe gas may How to the condenserl from the evaporator, and aliquid may ow from the condenser tothe evaporator.

21. In an ice making machine, the combination of a still-absorber, an evaporator,

and a condenser, connected together in an operative cycle by pipes in such a way that fluid passing from the still-absorber to the condenser and from the condenser to the still-absorber passes through the eva rator.

- HENRY E. WIL

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