US2455781A - Air circulating duct for two-temperature refrigerator cabinets - Google Patents

Air circulating duct for two-temperature refrigerator cabinets Download PDF

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Publication number
US2455781A
US2455781A US710974A US71097446A US2455781A US 2455781 A US2455781 A US 2455781A US 710974 A US710974 A US 710974A US 71097446 A US71097446 A US 71097446A US 2455781 A US2455781 A US 2455781A
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United States
Prior art keywords
cooling unit
side walls
shell
refrigerator
inner shell
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Expired - Lifetime
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US710974A
Inventor
Ralph E Kruck
Elliott E Grover
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CBS Corp
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Westinghouse Electric Corp
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Priority to US710974A priority Critical patent/US2455781A/en
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    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • 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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • 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
    • F25D23/00—General constructional features
    • F25D23/08—Parts formed wholly or mainly of plastics materials
    • F25D23/082—Strips
    • F25D23/085—Breaking strips

Definitions

  • WITNESSES INVENTORS y RALPH E. KRucn ELuoTTE. GROVER ATTORNEY Dec. 7, 1948.
  • This invention relates to refrigerator cabinets 'lClaiml. (CL82-89) and more especially to a cabinet having two-compartments maintained at diflerent temperatures.
  • Fig. 1 is a view in perspective of a'refrigerator cabinet embodying the invention
  • Fig. 2 is a vertical section of the refrigerator of this invention taken "on the line ⁇ II-II of Fig. 4;
  • Fig. 3 is a horizontal section of the refrigerator cabinet of this invention taken 'on the line III-III of Fig. 4;
  • Fig. 4 is a section on the line IV-IV of Fig. 2.
  • the reference numeral l designates a refrigerator cabinet having -a food storage chamber l2 in the upper portion thereof and a machinery chamber l4 in the lower portion.
  • the walls of the food storage chamber l2 are formed by an outer metal shell l8 and an'inner metal shell 18 with thermal insulating material 20 therebetween.
  • a cooling unit 22 is secured'to the upper wall 48 of the inner shell f8 by supports 24 and is of the type described in the copending patent application, Serial No. 666,950,
  • a removable panel 26 in the upper rear wall of the outer shell I6 and a similar panel 28 in the inner shell I! provide for the insertion of the cooling unit 22 and the refrigerant tubing (not shown) through the rear wall of the cabinet III.
  • a defrost pan 3! is located a spaced distance below thecooling unit 22 to catch defrost water dripping therefrom.
  • the defrost pan 30 extends substantially to both side walls'of the food storage chamber l2, but its rear edge is spaced from the rear wall thereof and its front edge from the door 32 thereof.
  • a sheet of heat-insulating "material 34 is located below the pan 30 to prevent condensation of moisture on the lower surface thereof.
  • the defrost pan3il and the sheet 24 form a horizonta partition, in the food' storagev chamber l2 dividing it into-an upper compartment 35. comprising mainly the coolingnnit 22 at the rear edge of the defrost pan 30.
  • damper 38 is actuated by a metal bellows 40 which communicates through a tube 42 with a bulb 44 located in the ambient temperature of the cabinet IO.
  • the bellows 40, the tube 42 and a substantial portion of the bulb 44 are filled with a volatile fluid.
  • the operation of the damper '38 is more fully described in the patent app'ication, Serial No. 621,058, filed on October 8, 1945, by Raymond E. Tobey, and assigned to the a'ssignee ofthis application. 1
  • the upper portion 46 of the inner shell [8 opposite the coolin unit 22 is bulged outwardly towards the outer shell It.
  • the upper wall 48 of the inner shell I! and the central portion of the panel 22 is bulged outwardly and away from the cooling unit 22, the bulgedout portion of the panel ,28 extending to below the sheet 34.
  • These bulged-out portions permit the use of a large cooling unit which is almost as a 22 and the front edges of the outer shell i6 adiacent thereto is closed by a panel of rigid heatinsulating material 54.
  • the panel 54 overlaps the front edges of the inner shell I!
  • the panel 54 is forined into an offset 58 and a rubber gasket 60 engages the edge portion of the offset 58.
  • a door 62 is so hung in the offset portion 58 of the panel 54 that the front surface of the door 62 is substantially flush with the front surface of the panel 54.
  • the door 82 closes on the gasket 60.
  • the bulged-out portions of the inner shell l8 adjacent the cooling unit 22 provide adequate air-circulating ducts for cooling the lower compartment 36. These ducts are substantially concealed from view.
  • the door 52 for the cooling unit 22 is substantially as wide as the lower food storage compartment I and is spaced from the top wall 84 of the outer shell IS a distance equal to about the width of the breaker strip 52 of the lower food storage compartment 38. This arrangement economizes space and is pleasing to the eye. I
  • this invention provides a refrigerator cabinet having air-circulating ducts which are formed in part by bulged-out portions in the inner shell and that these ducts are concealed from view.
  • a refrigerator comprising an outer shell having vertical side walls, an inner metal shell within and spaced from the outer shell, the upper portion of each of the side walls of the inner shell being bulged outwardly to lie closer to the adjacent side walls of the outer shell than does the lower portion of each of the side walls of the inner shell,.the front of said inner shell being open, heat-insulating material in the spaces between the outer and inner shell, a cooling unit in the upper portion of the inner shell, the side walls of the cooling unit lying near but spaced from said bulged-out portions to provide narrow ducts adjacent the cooling unit, and means for closin the space between the top edge and the side edges of the cooling unit at the front thereof and the respective adjacent front edges of the inner shell.
  • a refrigerator comprising an outer metal shell having vertical side walls, an inner metal shell within and spaced from the outer shell, the upper portions of each of the side walls and rear wall of the inner shell being bulged outwardly to lie closer respectively to the adjacent side walls and rear wall of the outer shell than do the lower portions of each of the side walls and the rear wall of the inner shell. heat-insulating material in the spaces between the outer and the inner shell and a cooling unit in said upper portion of the inner shell and spaced from the walls of the refrigerator to provide a narrow air-circulating space around the cooling unit.
  • a refrigerator comprising an outer metal shell having vertical side walls, an inner'metal shell within and spaced from the outer shell, an upper portion of the side walls of the inner shell being bulged outwardly to lie closer to the adjacent side walls of the outer shell than do the side walls of the lower portlonof the inner shell, heat-insulation material in the spaces between the outer and inner shells, a cooling unit in the upper portion of the inner shell but spaced from the walls thereof to provide an air-circulating space around the cooling unit, the front of said outer shell, said inner shell, and said cooling unit being open, and a heat breaker strip at the front of said cabinet, said heat breaker strip closing the spaces between said outer shell and said inner shell and also between the two side walls and the top wall of the cooling unit and the respective adjacent portions of the side walls of the inner liner and the top wall thereof.
  • a refrigerator comprising insulated side, rear and top walls and a vertical door forming at least a part of the front wall of said refrigerator, a partition in said refrigerator dividing it into upper and lower food storage compartments, said partition extending substantially to said side walls, the inner surface of said side walls being bulged outwardly above said partition, the upper portion of the inner surface of said rear wall being bulged outwardly to an elevation below that of said partition, the rear edge of said partition being spaced from said last-mentioned bulged-out portion and the front edge of said partition being spaced from said door. and a cooling unit in said upper compartment, said cooling unit having side walls located near butand the top and adjacent side walls of the refrigerator, respectively.

Description

Dec. 7, 1948. KRUCK ET A 2,455,781
AIR CIRCULATING "DUCT FOR TWO-TEMPERATURE REFRIGERATOR CABINETS Filed Nov. 20, 1946 4 Sheets-Sheef. 1
WITNESSES: INVENTORS y RALPH E. KRucn ELuoTTE. GROVER ATTORNEY Dec. 7, 1948.
AIR CIRCUL Filed NOV. 20, 1946 R. E. KRUCK ET AL REFRIGERATOR CABINETS ATING DUCT FOR TWO-TEMPERATURE 4 Sheets-Sheet 2 INVENTORS RALPH E. KR LICK ELLIOTT E. Gnovsa ATTORNEY Dec. 7, 1948. I
R. E. KRUCK ETAL AIR CIRCULATING DUCT FOR TWO-TEMPERATURE Filed NOV. 20, 1946 REFRIGERATOR GAB INETS 4 Sheets-Sheet 3 WlTN ESSES:
INVENTORS RALPH E. Knucn ELLIOTT E. CIROVER ATTORNEY R. E. KRUCK ET AL AIR CIRCULATING-DUCT FOR TWO-TEMPERATURE Dec. 7, 1948.
REFRIGERATOR CABINETS .4 Sheets-Sheet 4 Filed Nov. 20, 1946 WITNESSES BYg ATTORNEY Patented bee 1, 1948 AIR CIRCULA'HNG DUCT FORI'I'WO-TEM- PEBATURE REFRIGERATOR CABINETS Ralph E. Kruck .ta mm a. Grover, Springfield,
Mata, auignors to Westinghouse Electric Co:- porailon. East Pittsburgh, 2a., a corporation of Pennsylvania Applieation November 20. 1940, SerialNo. 110,974
This invention relates to refrigerator cabinets 'lClaiml. (CL82-89) and more especially to a cabinet having two-compartments maintained at diflerent temperatures.
It is an object of the invention to provide novel air-circulating ducts in a refrigerator cabinet for cooling one of the compartments therein. It is a further object of the invention to provide novel concealing means for the air ducts in a refrigerator.
These and other objects are effected by our invention as will be apparent. from the following description and claims taken in connection with the accompanying drawings, forming a part of this application, in which:
Fig. 1 is a view in perspective of a'refrigerator cabinet embodying the invention;
Fig. 2 is a vertical section of the refrigerator of this invention taken "on the line {II-II of Fig. 4;
Fig. 3 is a horizontal section of the refrigerator cabinet of this invention taken 'on the line III-III of Fig. 4; and
Fig. 4 is a section on the line IV-IV of Fig. 2. In the drawings, the reference numeral l designates a refrigerator cabinet having -a food storage chamber l2 in the upper portion thereof and a machinery chamber l4 in the lower portion.
The walls of the food storage chamber l2 are formed by an outer metal shell l8 and an'inner metal shell 18 with thermal insulating material 20 therebetween. A cooling unit 22 is secured'to the upper wall 48 of the inner shell f8 by supports 24 and is of the type described in the copending patent application, Serial No. 666,950,
filed on May 10, 1946, by Jules N. Saler, now Patent No. 2,450,732, granted October 5, 1948, and assigned to the assignee of this application. A removable panel 26 in the upper rear wall of the outer shell I6 and a similar panel 28 in the inner shell I! provide for the insertion of the cooling unit 22 and the refrigerant tubing (not shown) through the rear wall of the cabinet III.
A defrost pan 3!! is located a spaced distance below thecooling unit 22 to catch defrost water dripping therefrom. The defrost pan 30 extends substantially to both side walls'of the food storage chamber l2, but its rear edge is spaced from the rear wall thereof and its front edge from the door 32 thereof. A sheet of heat-insulating "material 34 is located below the pan 30 to prevent condensation of moisture on the lower surface thereof. The defrost pan3il and the sheet 24 form a horizonta partition, in the food' storagev chamber l2 dividing it into-an upper compartment 35. comprising mainly the coolingnnit 22 at the rear edge of the defrost pan 30. The
damper 38 is actuated by a metal bellows 40 which communicates through a tube 42 with a bulb 44 located in the ambient temperature of the cabinet IO. The bellows 40, the tube 42 and a substantial portion of the bulb 44 are filled with a volatile fluid. The operation of the damper '38 is more fully described in the patent app'ication, Serial No. 621,058, filed on October 8, 1945, by Raymond E. Tobey, and assigned to the a'ssignee ofthis application. 1
The upper portion 46 of the inner shell [8 opposite the coolin unit 22 is bulged outwardly towards the outer shell It. In like manner, the upper wall 48 of the inner shell I! and the central portion of the panel 22 is bulged outwardly and away from the cooling unit 22, the bulgedout portion of the panel ,28 extending to below the sheet 34. These bulged-out portions permit the use of a large cooling unit which is almost as a 22 and the front edges of the outer shell i6 adiacent thereto is closed by a panel of rigid heatinsulating material 54. The panel 54 overlaps the front edges of the inner shell I! adjacent the cooling unit 22 and has a central opening 55 which registers with the open front of the cooling unit 22.= The panel 54 is forined into an offset 58 and a rubber gasket 60 engages the edge portion of the offset 58. A door 62 is so hung in the offset portion 58 of the panel 54 that the front surface of the door 62 is substantially flush with the front surface of the panel 54. The door 82 closes on the gasket 60.
The bulged-out portions of the inner shell l8 adjacent the cooling unit 22 provide adequate air-circulating ducts for cooling the lower compartment 36. These ducts are substantially concealed from view. The door 52 for the cooling unit 22 is substantially as wide as the lower food storage compartment I and is spaced from the top wall 84 of the outer shell IS a distance equal to about the width of the breaker strip 52 of the lower food storage compartment 38. This arrangement economizes space and is pleasing to the eye. I
It will be apparent from the above that this invention provides a refrigerator cabinet having air-circulating ducts which are formed in part by bulged-out portions in the inner shell and that these ducts are concealed from view.
While we have shown our invention in but one form, it will be obvious to those skilled in the art that it is not so limited, but is susceptible of various changes and modifications without departing from the spirit thereof.
What we claim is:
1. A refrigerator comprising an outer shell having vertical side walls, an inner metal shell within and spaced from the outer shell, the upper portion of each of the side walls of the inner shell being bulged outwardly to lie closer to the adjacent side walls of the outer shell than does the lower portion of each of the side walls of the inner shell,.the front of said inner shell being open, heat-insulating material in the spaces between the outer and inner shell, a cooling unit in the upper portion of the inner shell, the side walls of the cooling unit lying near but spaced from said bulged-out portions to provide narrow ducts adjacent the cooling unit, and means for closin the space between the top edge and the side edges of the cooling unit at the front thereof and the respective adjacent front edges of the inner shell.
shell being bulged outwardly to lie closer to the adjacent side walls of the outer shell than do the lower portions of each of the side walls of the inner shell, heat-insulating material in the spaces between the outer and inner shells, and a cooling unit in said upper portion of the inner shell and spaced from the walls thereof to provide an aircirculating space around the. cooling unit, said air-circulating space communicating with the space in the inner shell below the cooling unit.
3. A refrigerator comprising an outer metal shell having vertical side walls, an inner metal shell within and spaced from the outer shell, the upper portions of each of the side walls and rear wall of the inner shell being bulged outwardly to lie closer respectively to the adjacent side walls and rear wall of the outer shell than do the lower portions of each of the side walls and the rear wall of the inner shell. heat-insulating material in the spaces between the outer and the inner shell and a cooling unit in said upper portion of the inner shell and spaced from the walls of the refrigerator to provide a narrow air-circulating space around the cooling unit.
metal 4. A refrigerator comprising an outer metal shell having vertical side walls, an inner'metal shell within and spaced from the outer shell, an upper portion of the side walls of the inner shell being bulged outwardly to lie closer to the adjacent side walls of the outer shell than do the side walls of the lower portlonof the inner shell, heat-insulation material in the spaces between the outer and inner shells, a cooling unit in the upper portion of the inner shell but spaced from the walls thereof to provide an air-circulating space around the cooling unit, the front of said outer shell, said inner shell, and said cooling unit being open, and a heat breaker strip at the front of said cabinet, said heat breaker strip closing the spaces between said outer shell and said inner shell and also between the two side walls and the top wall of the cooling unit and the respective adjacent portions of the side walls of the inner liner and the top wall thereof.
5. A refrigerator comprising insulated side, rear and top walls and a vertical door forming at least a part of the front wall of said refrigerator, a partition in said refrigerator dividing it into upper and lower food storage compartments, said partition extending substantially to said side walls, the inner surface of said side walls being bulged outwardly above said partition, the upper portion of the inner surface of said rear wall being bulged outwardly to an elevation below that of said partition, the rear edge of said partition being spaced from said last-mentioned bulged-out portion and the front edge of said partition being spaced from said door. and a cooling unit in said upper compartment, said cooling unit having side walls located near butand the top and adjacent side walls of the refrigerator, respectively.
' RALPH E. KRUCK.
ELLIOTT E. GROVER.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 2,297,581 Peltier Sept. 29, 1942 2,301,020 Dailey Nov. 3, 1942 2,353,861 Rosebrook -July 11, 1944
US710974A 1946-11-20 1946-11-20 Air circulating duct for two-temperature refrigerator cabinets Expired - Lifetime US2455781A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563975A (en) * 1948-09-24 1951-08-14 Westinghouse Electric Corp Two temperature refrigerator
US2679944A (en) * 1949-06-15 1954-06-01 Admiral Corp Refrigerator breaker strip
US2708052A (en) * 1951-04-16 1955-05-10 Motor Products Corp Breaker strip construction and assembly
US2724242A (en) * 1952-07-24 1955-11-22 Gen Electric Multiple temperature refrigerator cabinet
US2789720A (en) * 1954-04-16 1957-04-23 Whirlpool Seeger Corp Breaker-strip construction

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2297581A (en) * 1940-07-25 1942-09-29 Philco Corp Refrigerator
US2301020A (en) * 1941-06-12 1942-11-03 Philco Corp Refrigerator construction
US2353361A (en) * 1940-08-03 1944-07-11 Gibson Refrigerator Co Refrigerator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2297581A (en) * 1940-07-25 1942-09-29 Philco Corp Refrigerator
US2353361A (en) * 1940-08-03 1944-07-11 Gibson Refrigerator Co Refrigerator
US2301020A (en) * 1941-06-12 1942-11-03 Philco Corp Refrigerator construction

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563975A (en) * 1948-09-24 1951-08-14 Westinghouse Electric Corp Two temperature refrigerator
US2679944A (en) * 1949-06-15 1954-06-01 Admiral Corp Refrigerator breaker strip
US2708052A (en) * 1951-04-16 1955-05-10 Motor Products Corp Breaker strip construction and assembly
US2724242A (en) * 1952-07-24 1955-11-22 Gen Electric Multiple temperature refrigerator cabinet
US2789720A (en) * 1954-04-16 1957-04-23 Whirlpool Seeger Corp Breaker-strip construction

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