US2683361A - Jet operated refrigerator - Google Patents
Jet operated refrigerator Download PDFInfo
- Publication number
- US2683361A US2683361A US300678A US30067852A US2683361A US 2683361 A US2683361 A US 2683361A US 300678 A US300678 A US 300678A US 30067852 A US30067852 A US 30067852A US 2683361 A US2683361 A US 2683361A
- Authority
- US
- United States
- Prior art keywords
- evaporator
- tank
- jet
- liquid
- 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
- 239000007788 liquid Substances 0.000 description 31
- 239000003507 refrigerant Substances 0.000 description 17
- 239000007789 gas Substances 0.000 description 13
- 239000012530 fluid Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000010257 thawing 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/06—Compression machines, plants or systems with non-reversible cycle with compressor of jet type, e.g. using liquid under pressure
Definitions
- This invention relates to a jet operated refrigerator and particularly to a jet operating system having means to prevent vapor lock of the driving pump.
- the present invention provides a pumping system so arranged that no gas can be entrapped in the pumping system so that the jet may be continuously operated and the utilization of a check valve between the evaporator and the suction jet chamber so that the evaporator will continue to operate for an interval in the event the jet should be shut down.
- the condensing device for returning the refrigerant to the receiver is provided with a sloping header so that a liquid seal is provided between the condenser and the receiver so, that gases are separated from the liquid being returned to the receiver.
- the device further utilizes the use of a shunt valve around the evaporator control valve so that liquid refrigerant may be passed through the evaporating coil to defrost the same.
- a receiver tank ID has an electric motor l2 mounted therein which has a shaft l4 driving a centrifugal pump it which is completely immersed in a quantity of liquid refrigerant [8 received in the receiver tank I 0.
- the pump It delivers liquid refrigerant to a pressure line 20 which in turn supplies liquid refrigerant to a nozzle 22 which is received in a suction housing 24 and has a return connection 25 connected to a top header 28 of a condenser having a plurality of condensing tubes 30 provided with cooling fins 32.
- the condensing tubes 31! are connected into a return header 34 which is connected into the receiver H] by means of a conduit 36.
- the return header 34 is inclined with respect to the horizontal so that one end 38 is at a considerably lower level than the other end 40.
- the conduit 35 is connected into the lower end 38 and connects into the receiver It at a point 42 materially below the normal level of refrigerant I8 in the container In.
- the upward slope of the header 34 is sufficient that the top end 40 is above the liquid level of the refrigerant [8 in the container Ill so that a portion of the header 34 is flooded as well as the lower ends 44 of a por-' tion of the tubes 30.
- the refrigerating system per se comprises an evaporating coil 58 to which is connected a supply line 52 which connects into the container Ii! at a point adjacent the bottom thereof so that the entrance 54 of supply line 52 will be constantly below the level of the liquid in the container Ill.
- the evaporator coil Ell is connected into the chamber 24 by means of a suction line 55 so that the jet 22 constantly entrains the gas or other material coming through the line 56 into the chamber 24 so that a suction is supplied to the-evaporator 50 to cause fluid from the container ill to flow through the supply line 52 into the evaporator 58.
- a throttling valve 6i] is supplied in series between the supply line 52 and the evaporator 50.
- the control valve 60 may be either a. capillary tube as is well known or may be any type of mechanically or otherwise operated control valve for controlling or throttling the flow of liquid into the evaporator 50.
- the check valve 62 having a control ball valve 64 is placed in the suction line 56 so that on the failure of the jet 22 to produce suction in the line 56 the spring 66 will seat the valve 64 to close the suction line 56 to prevent reverse flow of the gas or liquid from the return line 26 into the suction line 55 and thus cause flooding of the evaporator.
- a bypass valve 10 is connected in shunt with the control valve 50 so that the valve 1'0 may be opened to permit a flow of liquid refrigerant from the container lil into the evaporator Bil to flood the same and cause defrosting thereof.
- the pump IE will be driven by the motor 12 through the driving connection I4 to impel pressure fluid through the conduit 20 through the nozzle 22 to entrain gas or other material in the chamber 24 and drive the same into the header 28.
- the valve 62 will be operated in conjunction with the control valve Bil to cause a continuous or intermittent flow of fluid through the supply line 52 into'the' evaporator 59 where the gases produced will be drawn ofi through the suction line 56 and commingled with the pressure fluid being delivered through the nozzle 22.
- the gases and the liquids will be separated in the header 2%? with the liquids falling rapidly through the tubes 30 while the gases w-illbe retained inv the tubes 30 and condensed into a liquid by heat exchange through the fins 32,.
- the liquid flooding the lower portion of. the header 34 provides a liquid seal between the condenser and the receiver l so that only liquid will ,flow through the return conduit 36 to main tain the liquid level in the receiver while any gases falling through the tubes 39 will rise to the end 48 of the inclined header 34 so that the gases will continuously move upwardly into the condenser tubes 32 to be condensed therein.
- the present invention provides a jet system in which there is little or no chance or" vapor lock of the jet nozzles and in which the refrigerant willbe completely condensed before returning .to the receiver and in the event of inoperative condition of the nozzle the evaporator will be maintained in cooling condition for a period until the pressure in the evaporator risesv to a point where there will. be no further material drawn through the supply line 52.
- the sealedin motor may be omitted and the ,pump driven. by .a shaft extending through the wall of the receiver, or by otherdrivin-g connection to an outside source of power.
- a refrigeration system comprising a receiver tank, a quantity of liquid refrigerant partially filling said receiver tank, an evaporator, a sup ply conduit connected between the lower portion of said tank and said evaporator, a throttling device interposed in said conduit between said tank and said evaporator, a pump submerged in the liquid in said tank, a driving motor in the upper portion of said tank, a driving connection conduit connected between the lower between said motor and said pump, a jet nozzle, a pressure conduit extending from said pump to said jet nozzle, a housing surrounding said nozzle, a conduit extending between said evaporator and said housing, a condenser including a top and a bottom header, a plurality of cooling tubes extending between said headers, a conduit cornmunicating said housing with said top header, a conduit communicating said bottom header with the lower portion of said tank.
- a refrigeration system comprising a receiver tank, a quantity of liquid refrigerant partially filling said receiver tank, an evaporator, a supply portion of said tank and said evaporator, a throttling device interposed in said conduit between said tank and said evaporator, a by-pass valve connected in shunt with said throttling device, a pump submerged'in the liquid in said tank, a driving motor in the upper portion of said tank, a driving connection between said. motor andsaid pump, a jet nozzle, a pressure conduit extending from said pump to.
- a refrigeration system comprising a receiver tank, a quantity of liquid refrigerant partially filling said receiver tank, an evaporator, a supply conduit connected between the lower portion of said tank and said evaporator, a throttling device interposed in said conduit between said tank and said evaporator, a pump submerged in the liquid in said tank, a driving motor in the upper portion of said tank, a driving connection between said motor andsaid pump, a jet nozzle, a pressure conduit extending from said pump to said jet nozzle, a housing surrounding said nozzle, a conduit extending between.
- a condenser including a top and a bottom header, a plurality of cooling tubes extending between said top and bottom headers, a conduit communicating said housing with said top header, said bottom header being inclined, the lower endof said bottom header being below the liquid level in said tank, the upper end or said bottom header being above the liquid level in said tank, a conduit communicating the lower end of said bottom header with said. tank at a point below "the liquid level therein.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
July 13, 1954 R. RIDGLEY 2,683,351
JET OPERATED REFRIGERATOR Filed July 24. 1952 Raymond Ridg/ey IN VEN TOR.
Patented July 13, 1954 JET OPERATED REFRIGERATOR Raymond Ridgley, Detroit, Mich.
Application July 24, 1952, Serial No. 300,678
3 Claims.
This invention relates to a jet operated refrigerator and particularly to a jet operating system having means to prevent vapor lock of the driving pump.
In the operation of jet operated refrigerators there has been difficulty because of the entrainment of gas in the pump or the formation of gas therein to cause a vapor lock in the driving system and also difiiculty has been encountered because of backflow of fluid refrigerant into the evaporating coils on a failure of the jet.
The present invention provides a pumping system so arranged that no gas can be entrapped in the pumping system so that the jet may be continuously operated and the utilization of a check valve between the evaporator and the suction jet chamber so that the evaporator will continue to operate for an interval in the event the jet should be shut down.
This is accomplished according to the invention by providing a receiver having a quantity of liquid refrigerant therein and a centrifugal pump completely immersed in the liquid refrigerant so that no gas can be picked up by the pump. The condensing device for returning the refrigerant to the receiver is provided with a sloping header so that a liquid seal is provided between the condenser and the receiver so, that gases are separated from the liquid being returned to the receiver. The device further utilizes the use of a shunt valve around the evaporator control valve so that liquid refrigerant may be passed through the evaporating coil to defrost the same.
It is accordingly an object of the invention to provide an improved jet operated refrigerator.
It is a further object of the invention to provide a jet operated refrigerator having a completely immersed pump.
It is a further object of the invention to provide a refrigerating system having a vapor trap between the condenser and the receiver.
It is a still further object of the invention to provide a bypass valve for flooding the evaporator with liquid. refrigerant to defrost the same.
It is a further object of the invention to provide a check valve between the evaporating coil and the condensing chamber to prevent backflow of liquid refrigerant thereto.
Other objects and many of the attendant advantages of the present invention will be apparent from the following detailed description taken in conjunction with the accompanying drawing in which the figure is a schematic illustration of a jet operated refrigerator according to the invention.
In the exemplary embodiment of the invention, a receiver tank ID has an electric motor l2 mounted therein which has a shaft l4 driving a centrifugal pump it which is completely immersed in a quantity of liquid refrigerant [8 received in the receiver tank I 0.
The pump It delivers liquid refrigerant to a pressure line 20 which in turn supplies liquid refrigerant to a nozzle 22 which is received in a suction housing 24 and has a return connection 25 connected to a top header 28 of a condenser having a plurality of condensing tubes 30 provided with cooling fins 32. The condensing tubes 31! are connected into a return header 34 which is connected into the receiver H] by means of a conduit 36.
The return header 34 is inclined with respect to the horizontal so that one end 38 is at a considerably lower level than the other end 40. The conduit 35 is connected into the lower end 38 and connects into the receiver It at a point 42 materially below the normal level of refrigerant I8 in the container In. The upward slope of the header 34 is sufficient that the top end 40 is above the liquid level of the refrigerant [8 in the container Ill so that a portion of the header 34 is flooded as well as the lower ends 44 of a por-' tion of the tubes 30.
The refrigerating system per se comprises an evaporating coil 58 to which is connected a supply line 52 which connects into the container Ii! at a point adjacent the bottom thereof so that the entrance 54 of supply line 52 will be constantly below the level of the liquid in the container Ill. The evaporator coil Ell is connected into the chamber 24 by means of a suction line 55 so that the jet 22 constantly entrains the gas or other material coming through the line 56 into the chamber 24 so that a suction is supplied to the-evaporator 50 to cause fluid from the container ill to flow through the supply line 52 into the evaporator 58. A throttling valve 6i] is supplied in series between the supply line 52 and the evaporator 50. The control valve 60 may be either a. capillary tube as is well known or may be any type of mechanically or otherwise operated control valve for controlling or throttling the flow of liquid into the evaporator 50.
The check valve 62 having a control ball valve 64 is placed in the suction line 56 so that on the failure of the jet 22 to produce suction in the line 56 the spring 66 will seat the valve 64 to close the suction line 56 to prevent reverse flow of the gas or liquid from the return line 26 into the suction line 55 and thus cause flooding of the evaporator. Preferably a bypass valve 10 is connected in shunt with the control valve 50 so that the valve 1'0 may be opened to permit a flow of liquid refrigerant from the container lil into the evaporator Bil to flood the same and cause defrosting thereof.
In the operation of the refrigerator according to the invention, the pump IE will be driven by the motor 12 through the driving connection I4 to impel pressure fluid through the conduit 20 through the nozzle 22 to entrain gas or other material in the chamber 24 and drive the same into the header 28. The valve 62 will be operated in conjunction with the control valve Bil to cause a continuous or intermittent flow of fluid through the supply line 52 into'the' evaporator 59 where the gases produced will be drawn ofi through the suction line 56 and commingled with the pressure fluid being delivered through the nozzle 22. The gases and the liquids will be separated in the header 2%? with the liquids falling rapidly through the tubes 30 while the gases w-illbe retained inv the tubes 30 and condensed into a liquid by heat exchange through the fins 32,. The liquid flooding the lower portion of. the header 34 provides a liquid seal between the condenser and the receiver l so that only liquid will ,flow through the return conduit 36 to main tain the liquid level in the receiver while any gases falling through the tubes 39 will rise to the end 48 of the inclined header 34 so that the gases will continuously move upwardly into the condenser tubes 32 to be condensed therein.
It will accordingly be seen that the present invention provides a jet system in which there is little or no chance or" vapor lock of the jet nozzles and in which the refrigerant willbe completely condensed before returning .to the receiver and in the event of inoperative condition of the nozzle the evaporator will be maintained in cooling condition for a period until the pressure in the evaporator risesv to a point where there will. be no further material drawn through the supply line 52.
In applications such as automotive air conditioning the sealedin motor may be omitted and the ,pump driven. by .a shaft extending through the wall of the receiver, or by otherdrivin-g connection to an outside source of power.
While a preferred embodiment has been shown and described herein, it will be apparent to those skilled in the art that changes and modifications can be made therein without departing from the true spirit or the invention.
Having thus described the invention, what is claimed as new is:
1. A refrigeration system comprising a receiver tank, a quantity of liquid refrigerant partially filling said receiver tank, an evaporator, a sup ply conduit connected between the lower portion of said tank and said evaporator, a throttling device interposed in said conduit between said tank and said evaporator, a pump submerged in the liquid in said tank, a driving motor in the upper portion of said tank, a driving connection conduit connected between the lower between said motor and said pump, a jet nozzle, a pressure conduit extending from said pump to said jet nozzle, a housing surrounding said nozzle, a conduit extending between said evaporator and said housing, a condenser including a top and a bottom header, a plurality of cooling tubes extending between said headers, a conduit cornmunicating said housing with said top header, a conduit communicating said bottom header with the lower portion of said tank.
2. A refrigeration system'comprising a receiver tank, a quantity of liquid refrigerant partially filling said receiver tank, an evaporator, a supply portion of said tank and said evaporator, a throttling device interposed in said conduit between said tank and said evaporator, a by-pass valve connected in shunt with said throttling device, a pump submerged'in the liquid in said tank, a driving motor in the upper portion of said tank, a driving connection between said. motor andsaid pump, a jet nozzle, a pressure conduit extending from said pump to. said jet nozzle, a housing surrounding said nozzle, a conduit extending between said evaporator and said housing, a check valve interposed in said conduit between said evaporator and-saidhousing, a return conduit extending between said housing and said tank, a condenser interposed .in said return conduit.
3. A refrigeration system comprising a receiver tank, a quantity of liquid refrigerant partially filling said receiver tank, an evaporator, a supply conduit connected between the lower portion of said tank and said evaporator, a throttling device interposed in said conduit between said tank and said evaporator, a pump submerged in the liquid in said tank, a driving motor in the upper portion of said tank, a driving connection between said motor andsaid pump, a jet nozzle, a pressure conduit extending from said pump to said jet nozzle, a housing surrounding said nozzle, a conduit extending between. said evaporator and said housing, a condenser including a top and a bottom header, a plurality of cooling tubes extending between said top and bottom headers, a conduit communicating said housing with said top header, said bottom header being inclined, the lower endof said bottom header being below the liquid level in said tank, the upper end or said bottom header being above the liquid level in said tank, a conduit communicating the lower end of said bottom header with said. tank at a point below "the liquid level therein.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 757,393 Coleman Apr. 12, 1904 1,874,912 Crosthwait Aug. 30, 1932 2,088,669 Randel Aug. 3, 1937 2,152,663 Randel Apr. 4, 1939 2,323,480 MacDougall July 6, 1943' 2,624,179 Daisy Jan. 6, 1953
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US300678A US2683361A (en) | 1952-07-24 | 1952-07-24 | Jet operated refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US300678A US2683361A (en) | 1952-07-24 | 1952-07-24 | Jet operated refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2683361A true US2683361A (en) | 1954-07-13 |
Family
ID=23160144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US300678A Expired - Lifetime US2683361A (en) | 1952-07-24 | 1952-07-24 | Jet operated refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2683361A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2744392A (en) * | 1954-12-03 | 1956-05-08 | Ridgley Raymond | Jet operated refrigerator |
| US2887857A (en) * | 1955-06-28 | 1959-05-26 | Hugh J Scullen | Jet pumps in refrigeration system |
| EP0076081A3 (en) * | 1981-09-25 | 1983-08-17 | The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and | Improvements in or relating to heat pipes |
| WO1995014897A1 (en) * | 1993-11-24 | 1995-06-01 | Emanuele Parascandola | Refrigeration plant with liquid jet compressor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US757393A (en) * | 1900-01-12 | 1904-04-12 | Clarence W Coleman | Refrigeration system. |
| US1874912A (en) * | 1930-08-22 | 1932-08-30 | C A Dunham Co | Refrigerating method and apparatus |
| US2088609A (en) * | 1936-07-28 | 1937-08-03 | Randel Bo Folke | Method of and apparatus for refrigerating |
| US2152663A (en) * | 1936-01-27 | 1939-04-04 | Randel Bo Folke | Refrigerating apparatus |
| US2323480A (en) * | 1941-02-28 | 1943-07-06 | Alco Valve Co | Valve control |
| US2624179A (en) * | 1949-08-31 | 1953-01-06 | William E Daisy | Refrigerating apparatus with defrosting mechanism |
-
1952
- 1952-07-24 US US300678A patent/US2683361A/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US757393A (en) * | 1900-01-12 | 1904-04-12 | Clarence W Coleman | Refrigeration system. |
| US1874912A (en) * | 1930-08-22 | 1932-08-30 | C A Dunham Co | Refrigerating method and apparatus |
| US2152663A (en) * | 1936-01-27 | 1939-04-04 | Randel Bo Folke | Refrigerating apparatus |
| US2088609A (en) * | 1936-07-28 | 1937-08-03 | Randel Bo Folke | Method of and apparatus for refrigerating |
| US2323480A (en) * | 1941-02-28 | 1943-07-06 | Alco Valve Co | Valve control |
| US2624179A (en) * | 1949-08-31 | 1953-01-06 | William E Daisy | Refrigerating apparatus with defrosting mechanism |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2744392A (en) * | 1954-12-03 | 1956-05-08 | Ridgley Raymond | Jet operated refrigerator |
| US2887857A (en) * | 1955-06-28 | 1959-05-26 | Hugh J Scullen | Jet pumps in refrigeration system |
| EP0076081A3 (en) * | 1981-09-25 | 1983-08-17 | The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and | Improvements in or relating to heat pipes |
| WO1995014897A1 (en) * | 1993-11-24 | 1995-06-01 | Emanuele Parascandola | Refrigeration plant with liquid jet compressor |
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