US2653013A - Precooler for refrigerated drinking fountains - Google Patents
Precooler for refrigerated drinking fountains Download PDFInfo
- Publication number
- US2653013A US2653013A US158453A US15845350A US2653013A US 2653013 A US2653013 A US 2653013A US 158453 A US158453 A US 158453A US 15845350 A US15845350 A US 15845350A US 2653013 A US2653013 A US 2653013A
- Authority
- US
- United States
- Prior art keywords
- water
- storage tank
- drain
- tube
- drain conduit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000035622 drinking Effects 0.000 title description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 45
- 239000002699 waste material Substances 0.000 description 15
- 239000003507 refrigerant Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
- F25D31/002—Liquid coolers, e.g. beverage cooler
Definitions
- My invention relates to water coolers, more particularly to water coolers of the refrigerator type, and the principal object of my invention is to provide new and improved apparatus of this character.
- My invention provides a high degree of thermal transfer between incoming water and outgoing drain water without entailing the disadvantages of prior art constructions.
- Figure 1 is an elevational view of a water drinking fountain, portions being broken away to disclose detail
- FIG. 2 is an enlarged elevational view of the pre-cooler unit shown in Figure 1,
- FIG. 3 is an enlarged, fragmentary sectional View corresponding generally to the line 3-3 of Figure 2,
- Figure 4 is a transverse sectional View corresponding generally to the line 3-4 of Figure 3, and
- Figure 5 is a broken, fragmentary View illustrating the invention in a slightly different combination.
- a refrigerator-type water cooler Ill comprising a casing H, the lower end of which encloses a motor-compressor-condenser unit which may be of any suitable type and therefore is not shown or described.
- a water storage tank i2 is supported in the upper portion of the casing H.
- a refrigerant-carrying coil I3 is disposed within the storage tank 12.
- a conduit l4 provides for upward flow of liquid refrigerant from the condenser, to and through an automatic expansion valve I5 above the tank l2, where the refrigerant is converted to a liquid-vapor mixture, the temperature of which drops due to partial evaporation of the refrigerant.
- the mixture of liquid refrigerant and vapor enters into the upper end of tank I2 by means of a conduit l6 and is connected to coil l3.
- At least a part of the coil [3 is disposed withina coil ll which receives water from the interior of the tank I?” and delivers such water to a control valve l8 by means of a conduit l9.
- a suction line 20 carries gas back from the coil is to the compressor-condensing unit, where it is compressed, condensed and converted into liquid so that the cycle may be repeated.
- the foregoing is substantially in accordance with the disclosure in Letters Patent No. 2,278,226 issued to Halsey W. Taylor on March 31, 1942, and detailed description is believed to be unnecessary. It will be appreciated that the upper portion of the interior of the casing M will be provided with suitable insulating material surrounding the water tank l2 and cooperating parts to prevent cooling losses. Such insulation is omitted from the drawings for purposes of clarity.
- the valve i8 controls flow of refrigerated water to a bubbler 2!, or any other suitable dispensing device, which may be carried by a top cover 22 for the casing H.
- the valve I8 is operated by means of a foot pedal 23 operatively connected to the valve by means of a rod 26.
- the valve l8 opens to provide for flow of water to and outwardly of the bubbler 2!
- the top cover 22 is formed with a depressed portion 25 forming a catch basin for the unconsumed water which has issued from the bubbler ii.
- the lowermost portion of the catch basin is connected to a drain conduit 26 which leads the unconsumed water to a suitable drain (not shown).
- Means are provided to pre-cool water as it travels from a source to the storage tank 12, and my invention provides eificient thermal-transfer relationship between the drain conduit 26 and the incoming water line, which in this case is in the form of a tube 21.
- the drain conduit 26 is provided with connections 28 and 29 for .respective connection with the catch basin and the drain.
- the drain conduit is non-rectilinear and is preferably of a tortuous character so that water flowing therethrough is caused .to follow a tortuous path.
- that portion of the drain conduit intermediate the connections 28, 29 is formed in the shape of ahelix.
- the diameter of the helix is large enough so that the storage tank may be disposed within the confines of the helical coil, as seen in Figure 1.
- the water tube 27 has its lower end connectable to a source of supply (not shown) and has its upper end leading into the upper portion of the storage tank l2.
- the tube 21 is held in good thermal-transfer relationship with the drain conduit 26 and is also preferably of .a tortuous character so that water flowing upward- 1y therethrough will be cooled by waste water flowing downwardly through the drain conduit 26.
- the tube 2'! is spirally wound around the drain tube.
- the convolutions of the .drain conduit 26 are spaced-apart to provide sufficient inclination so that water will freely flow through the drain conduit 26.
- the interior of the drain conduit is entirely unobstructed and therefore an foreign matter will be constantly washed out of the drain conduitbyflow of waste water.
- the drain conduit will be free of the danger of clogging.
- waste water flowing therethrough will be urged to engagement with its defining wall by inertia and centrifugal force.
- the water supply tube 21 is wound about the drain tube 26 with a spiral lead sufficient to accommodate the required overall length of the tube,
- the lead is such as to provide space between adjoining convolutions of the spiral tube.
- a method of forming the pre-cooler unit herein disclosed is to first wind the tube 2'! in spiral fashion on the drain conduit 26 when the latter is in rectilinear condition. Thereafter the drain conduit, with the tube 21 Wound thereon, is formed to spiral shape. It will be appreciated that such method will cause the tube 21 to be drawn into efficient thermal-transfer contact with the exterior wall of the drain conduit 26. To further increase thermal-conducting relation, the entire assembly may be dipped in a hot tin bath so as to metallically bond the tube 21 to the drain conduit 25.
- the pre-cooler unit shown in Figure may be in all respects similar to the unit hereinbefore described.
- the refrigerant coil l3a is wound about the exterior of the storage tank l2a in order to meet requirements of certain localities.
- a drinking fountain comprising a housing for the drinking fountain structure, a water storage tank for storing chilled water, said tank being disposed within said housing in spaced relation with respect to the inner wall surface thereof and having an outlet connected to a service outlet for dispensing chilled water for consump tion, a waste pipe for conducting unconsumed chilled water from said service outlet, said waste pipe being disposed within the space between said housing and said storage tank in surrounding relation with respect to said storage tank.
- a coiled water supply pipe connected to said storage tank for admitting water thereto from a source of supply, said supply pipe'being mounted on said waste pipe with convolutions thereof extending transversely about said Waste pipe in close heat transfer contact with the outer surface thereof, whereby water to be admitted to said storage tank is pre-cooled by waste chilled water flowing through said waste pipe.
- a drinking fountain comprising a housing for the drinking fountain structure, a water storage tank for storing chilled water, said tank being disposed within said housing in spaced relation with respect to the inner wall surface thereof and'having an outlet connected to a service outlet for dispensing chilled water for consumption, a helically coiled waste pipe for conducting unconsumed chilled water from said service outlet, said waste pipe being disposed within the space between said housing and said storage tank in coiled relation.
- a coiled supply pipe connected to said storage tank for admitting water thereto from a source of supply, said supply pipe being mounted on said waste pipe with convolutions thereof extending transversely about the convolutions of said waste pipe in close heat transfer contact with the outer surface thereof, whereby water to be admitted to said storage tank is pre-cooled by waste chilled water flowing through said waste pipe.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Description
Sept. 22, 1953 v c. P. FREER 2,653,013
PRECOOLER FOR REFRIGERATED DRINKING FOUNTAINS Filed April 27, 1950 IN V EN TOR.
HT TQHME Y Patented Sept. 22, 1953 PRECOOLER FOR REFBIGERATED DRINKING FOUNTAINS Clyde P. Freer, Warren, Ohio, assignor to Halsey W. Taylor Company, Warren, Ohio, a corporation of Ohio Application April 27, 1950, Serial No. 158,453
2 Claims. (Cl. 257241) My invention relates to water coolers, more particularly to water coolers of the refrigerator type, and the principal object of my invention is to provide new and improved apparatus of this character.
The industry is constantly striving to achieve the utmost in efliciency in water coolers. One means to increase efiiciency is to pre-cool the water coming from a source by passing it in thermal-conducting relationship with waste fluids passing to a drain.
It is a well known fact that a portion of the refrigerated water issuing from adispensing device of a water cooler is wasted because of various reasons. Such waste may be caused by a consumer who turns on the water control valve and permits a quantity of refrigerated water to flow from the dispensing device before taking a drink. Also, waste is created because not all the Water issuing from the dispensing device is con- The prior art has employed thermal-transfer devices whereby the incoming water is precooled by the water passing to the drain, but such devices have met with many objections for the reason that they were either subject to clogging by debris accumulating in the drain, or represented only a negligible amount of efficiency as compared to the increase in cost of manufacture.
My invention provides a high degree of thermal transfer between incoming water and outgoing drain water without entailing the disadvantages of prior art constructions.
In the drawing accompanying this specification and forming a part of this application, there is shown, for purposes of illustration, an embodiment which my invention may assume, and in this drawing:
Figure 1 is an elevational view of a water drinking fountain, portions being broken away to disclose detail,
Figure 2 is an enlarged elevational view of the pre-cooler unit shown in Figure 1,
Figure 3 is an enlarged, fragmentary sectional View corresponding generally to the line 3-3 of Figure 2,
Figure 4 is a transverse sectional View corresponding generally to the line 3-4 of Figure 3, and
Figure 5 is a broken, fragmentary View illustrating the invention in a slightly different combination.
Referring to the drawing, the embodiment of myinvention is herein disclosed for use with a refrigerator-type water cooler Ill comprising a casing H, the lower end of which encloses a motor-compressor-condenser unit which may be of any suitable type and therefore is not shown or described. A water storage tank i2 is supported in the upper portion of the casing H.
Referring particularly to Figure 1, a refrigerant-carrying coil I3 is disposed within the storage tank 12. A conduit l4 provides for upward flow of liquid refrigerant from the condenser, to and through an automatic expansion valve I5 above the tank l2, where the refrigerant is converted to a liquid-vapor mixture, the temperature of which drops due to partial evaporation of the refrigerant. The mixture of liquid refrigerant and vapor enters into the upper end of tank I2 by means of a conduit l6 and is connected to coil l3. At least a part of the coil [3 is disposed withina coil ll which receives water from the interior of the tank I?! and delivers such water to a control valve l8 by means of a conduit l9. A suction line 20 carries gas back from the coil is to the compressor-condensing unit, where it is compressed, condensed and converted into liquid so that the cycle may be repeated. The foregoing is substantially in accordance with the disclosure in Letters Patent No. 2,278,226 issued to Halsey W. Taylor on March 31, 1942, and detailed description is believed to be unnecessary. It will be appreciated that the upper portion of the interior of the casing M will be provided with suitable insulating material surrounding the water tank l2 and cooperating parts to prevent cooling losses. Such insulation is omitted from the drawings for purposes of clarity.
The valve i8 controls flow of refrigerated water to a bubbler 2!, or any other suitable dispensing device, which may be carried by a top cover 22 for the casing H. In the construction herein shown, the valve I8 is operated by means of a foot pedal 23 operatively connected to the valve by means of a rod 26. When the foot pedal 23 is depressed, the valve l8 opens to provide for flow of water to and outwardly of the bubbler 2! The top cover 22 is formed with a depressed portion 25 forming a catch basin for the unconsumed water which has issued from the bubbler ii. The lowermost portion of the catch basin is connected to a drain conduit 26 which leads the unconsumed water to a suitable drain (not shown).
Means are provided to pre-cool water as it travels from a source to the storage tank 12, and my invention provides eificient thermal-transfer relationship between the drain conduit 26 and the incoming water line, which in this case is in the form of a tube 21.
As best seen in Figure 2, the drain conduit 26 is provided with connections 28 and 29 for .respective connection with the catch basin and the drain. The drain conduit is non-rectilinear and is preferably of a tortuous character so that water flowing therethrough is caused .to follow a tortuous path. As herein disclosed, that portion of the drain conduit intermediate the connections 28, 29 is formed in the shape of ahelix. In order that the pre-cooler unit combines with other structure to form a compact unit, the diameter of the helix is large enough so that the storage tank may be disposed within the confines of the helical coil, as seen in Figure 1.
The water tube 27 has its lower end connectable to a source of supply (not shown) and has its upper end leading into the upper portion of the storage tank l2. The tube 21 is held in good thermal-transfer relationship with the drain conduit 26 and is also preferably of .a tortuous character so that water flowing upward- 1y therethrough will be cooled by waste water flowing downwardly through the drain conduit 26. To provide for adequate length of the tube 27 and for optimum thermal-transfer engagement with the drain conduit 26, the tube 2'! is spirally wound around the drain tube.
The convolutions of the .drain conduit 26 are spaced-apart to provide sufficient inclination so that water will freely flow through the drain conduit 26. As seen in Figure '3, the interior of the drain conduit is entirely unobstructed and therefore an foreign matter will be constantly washed out of the drain conduitbyflow of waste water. Accordin ly, the drain conduit will be free of the danger of clogging. Further, because of the spiralled character of the drain conduit 26, waste water flowing therethrough will be urged to engagement with its defining wall by inertia and centrifugal force.
The water supply tube 21 is wound about the drain tube 26 with a spiral lead sufficient to accommodate the required overall length of the tube, In the embodiment herein disclosed, the lead is such as to provide space between adjoining convolutions of the spiral tube.
A method of forming the pre-cooler unit herein disclosed is to first wind the tube 2'! in spiral fashion on the drain conduit 26 when the latter is in rectilinear condition. Thereafter the drain conduit, with the tube 21 Wound thereon, is formed to spiral shape. It will be appreciated that such method will cause the tube 21 to be drawn into efficient thermal-transfer contact with the exterior wall of the drain conduit 26. To further increase thermal-conducting relation, the entire assembly may be dipped in a hot tin bath so as to metallically bond the tube 21 to the drain conduit 25.
The pre-cooler unit shown in Figure may be in all respects similar to the unit hereinbefore described. In this instance the refrigerant coil l3a is wound about the exterior of the storage tank l2a in order to meet requirements of certain localities.
In view of the foregoing, it will be apparent to those skilled in the art that 'I have accomplished at least the principal object of my invention and it will also be apparent to those 4 skilled in the art that the embodiment herein described may be variously changed and modified, without departing from the spirit of the invention, and that the invention is capable of use and has advantages not herein specifically described; hence it will be appreciated that the herein disclosed embodiment is illustrative only, and that my invention is not limited thereto.
I claim:
1. A drinking fountain, comprising a housing for the drinking fountain structure, a water storage tank for storing chilled water, said tank being disposed within said housing in spaced relation with respect to the inner wall surface thereof and having an outlet connected to a service outlet for dispensing chilled water for consump tion, a waste pipe for conducting unconsumed chilled water from said service outlet, said waste pipe being disposed within the space between said housing and said storage tank in surrounding relation with respect to said storage tank. thereby providing for compactness in manufacture, and a coiled water supply pipe connected to said storage tank for admitting water thereto from a source of supply, said supply pipe'being mounted on said waste pipe with convolutions thereof extending transversely about said Waste pipe in close heat transfer contact with the outer surface thereof, whereby water to be admitted to said storage tank is pre-cooled by waste chilled water flowing through said waste pipe.
2. A drinking fountain, comprising a housing for the drinking fountain structure, a water storage tank for storing chilled water, said tank being disposed within said housing in spaced relation with respect to the inner wall surface thereof and'having an outlet connected to a service outlet for dispensing chilled water for consumption, a helically coiled waste pipe for conducting unconsumed chilled water from said service outlet, said waste pipe being disposed within the space between said housing and said storage tank in coiled relation. around said storage tank, thereby providing for compactness in manufacture, and a coiled supply pipe connected to said storage tank for admitting water thereto from a source of supply, said supply pipe being mounted on said waste pipe with convolutions thereof extending transversely about the convolutions of said waste pipe in close heat transfer contact with the outer surface thereof, whereby water to be admitted to said storage tank is pre-cooled by waste chilled water flowing through said waste pipe.
CLYDE P. FREER.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,046,842 Ofiutt Dec. 10, 1912 1,164,075 Dean Dec. 14, 1915 1,911,042 Steenstrup May 23, 1933 1,928,212 Salto Sept. 26, 1933 2,010,504 Askin Aug. 6, 1935 2,324,707 Johnson July 20, 1943 2,433,977 Bently Jan. 6, 1948 2,446,289 Love Aug. 3,1948 2,481,662 Hastings Sept. 13, 1949 2,577,574 Freer Dec. 4, 1951 FOREIGN PATENTS Number Country Date 5,007 Great Britain Feb. 19, 1898
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US158453A US2653013A (en) | 1950-04-27 | 1950-04-27 | Precooler for refrigerated drinking fountains |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US158453A US2653013A (en) | 1950-04-27 | 1950-04-27 | Precooler for refrigerated drinking fountains |
Publications (1)
Publication Number | Publication Date |
---|---|
US2653013A true US2653013A (en) | 1953-09-22 |
Family
ID=22568195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US158453A Expired - Lifetime US2653013A (en) | 1950-04-27 | 1950-04-27 | Precooler for refrigerated drinking fountains |
Country Status (1)
Country | Link |
---|---|
US (1) | US2653013A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2914252A (en) * | 1959-11-24 | Water dispensing equipment | ||
US4257356A (en) * | 1978-06-22 | 1981-03-24 | Electric Power Research Institute | Heat exchanging apparatus and method |
US4300247A (en) * | 1980-05-07 | 1981-11-17 | Berg Charles A | Energy conservation in shower bathing |
US4398308A (en) * | 1980-05-07 | 1983-08-16 | Berg Charles A | Energy conservation in shower bathing |
EP1723375A1 (en) * | 2004-02-18 | 2006-11-22 | Renewability Energy, Inc. | Helical coil-on-tube heat exchanger |
WO2020134642A1 (en) * | 2018-12-29 | 2020-07-02 | 张钧胜 | Novel liquid cooler |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1046842A (en) * | 1909-12-10 | 1912-12-10 | John H Nicholson | Sterilizing apparatus. |
US1164075A (en) * | 1914-02-25 | 1915-12-14 | Roy M Dean | Heater. |
US1911042A (en) * | 1932-03-11 | 1933-05-23 | Gen Electric | Refrigerating apparatus |
US1928212A (en) * | 1931-07-21 | 1933-09-26 | Rex Cole Inc | Refrigerator |
US2010504A (en) * | 1933-05-13 | 1935-08-06 | Fedders Mfg Co Inc | Liquid cooling and dispensing device |
US2324707A (en) * | 1941-06-30 | 1943-07-20 | Herman K Johnson | Cooling apparatus |
US2433977A (en) * | 1945-07-11 | 1948-01-06 | Mccray Refrigerator Company | Liquid cooling apparatus |
US2446289A (en) * | 1948-01-08 | 1948-08-03 | Ebco Mfg Company | Precooler system for refrigerated drinking fountains |
US2481662A (en) * | 1943-05-06 | 1949-09-13 | Westinghouse Electric Corp | Water cooler |
US2577574A (en) * | 1948-08-24 | 1951-12-04 | Halsey W Taylor Co | Liquid cooling apparatus |
-
1950
- 1950-04-27 US US158453A patent/US2653013A/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1046842A (en) * | 1909-12-10 | 1912-12-10 | John H Nicholson | Sterilizing apparatus. |
US1164075A (en) * | 1914-02-25 | 1915-12-14 | Roy M Dean | Heater. |
US1928212A (en) * | 1931-07-21 | 1933-09-26 | Rex Cole Inc | Refrigerator |
US1911042A (en) * | 1932-03-11 | 1933-05-23 | Gen Electric | Refrigerating apparatus |
US2010504A (en) * | 1933-05-13 | 1935-08-06 | Fedders Mfg Co Inc | Liquid cooling and dispensing device |
US2324707A (en) * | 1941-06-30 | 1943-07-20 | Herman K Johnson | Cooling apparatus |
US2481662A (en) * | 1943-05-06 | 1949-09-13 | Westinghouse Electric Corp | Water cooler |
US2433977A (en) * | 1945-07-11 | 1948-01-06 | Mccray Refrigerator Company | Liquid cooling apparatus |
US2446289A (en) * | 1948-01-08 | 1948-08-03 | Ebco Mfg Company | Precooler system for refrigerated drinking fountains |
US2577574A (en) * | 1948-08-24 | 1951-12-04 | Halsey W Taylor Co | Liquid cooling apparatus |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2914252A (en) * | 1959-11-24 | Water dispensing equipment | ||
US4257356A (en) * | 1978-06-22 | 1981-03-24 | Electric Power Research Institute | Heat exchanging apparatus and method |
US4300247A (en) * | 1980-05-07 | 1981-11-17 | Berg Charles A | Energy conservation in shower bathing |
US4398308A (en) * | 1980-05-07 | 1983-08-16 | Berg Charles A | Energy conservation in shower bathing |
EP1723375A1 (en) * | 2004-02-18 | 2006-11-22 | Renewability Energy, Inc. | Helical coil-on-tube heat exchanger |
US20080017361A1 (en) * | 2004-02-18 | 2008-01-24 | Renewability Energy Inc. | Helical coil-on-tube heat exchanger |
EP1723375B1 (en) * | 2004-02-18 | 2012-04-11 | Renewability Energy, Inc. | Method for heating fresh water |
US8251133B2 (en) | 2004-02-18 | 2012-08-28 | Renewability Energy Inc. | Helical coil-on-tube heat exchanger |
WO2020134642A1 (en) * | 2018-12-29 | 2020-07-02 | 张钧胜 | Novel liquid cooler |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4061184A (en) | Heat exchanger for a refrigerated water cooler | |
US3088289A (en) | Water cooler | |
US3163998A (en) | Refrigerant flow control apparatus | |
US2531315A (en) | Liquid cooling apparatus | |
US2278225A (en) | Fluid cooler | |
US2316376A (en) | Chilling means for draft beverages | |
US2653013A (en) | Precooler for refrigerated drinking fountains | |
US2365786A (en) | Refrigeration apparatus | |
US2010504A (en) | Liquid cooling and dispensing device | |
US3021693A (en) | Hot gas defrosting refrigerating apparatus | |
US2650800A (en) | Water cooler | |
US2324707A (en) | Cooling apparatus | |
US2278226A (en) | Fluid cooler | |
US2339229A (en) | Beverage cooling apparatus | |
US2418994A (en) | Water-cooling apparatus | |
US2481662A (en) | Water cooler | |
US2446289A (en) | Precooler system for refrigerated drinking fountains | |
US2235244A (en) | Dispenser for refrigerated beverages | |
US3898856A (en) | Water chilling method and apparatus | |
US3263442A (en) | Under the sink water cooler | |
US1911042A (en) | Refrigerating apparatus | |
US2665559A (en) | Liquid treating apparatus | |
US2071188A (en) | Circulating liquid cooler | |
US2704657A (en) | taylor | |
US1907641A (en) | Liquid cooling apparatus |