US2683970A - Indicator for refrigerating apparatus - Google Patents

Indicator for refrigerating apparatus Download PDF

Info

Publication number
US2683970A
US2683970A US303978A US30397852A US2683970A US 2683970 A US2683970 A US 2683970A US 303978 A US303978 A US 303978A US 30397852 A US30397852 A US 30397852A US 2683970 A US2683970 A US 2683970A
Authority
US
United States
Prior art keywords
compartment
cabinet
door
lamp
switch
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
Application number
US303978A
Other languages
English (en)
Inventor
James W Jacobs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Motors Liquidation Co filed Critical Motors Liquidation Co
Priority to US303978A priority Critical patent/US2683970A/en
Priority to DEG7695U priority patent/DE1706854U/de
Priority to DEG12403A priority patent/DE930518C/de
Priority to FR1082208D priority patent/FR1082208A/fr
Application granted granted Critical
Publication of US2683970A publication Critical patent/US2683970A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/005—Mounting of control devices
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/36—Visual displays

Definitions

  • This invention relates to refrigerating apparatus and particularly to signal devices therefor.
  • a signal device of some sort to indicate to the user whether or not the refrigerating system associated with the refrigerator cabi-' net is. operating properly.
  • the purpose of such a signal device is to indicate or warn the user that the refrigerating system has been rendered inoperative for some reason or other so as to permit an immediate call for a serviceman whose prompt arrival may result insaving the frozen food contents of the freezer from completely thawing and causing spoilage thereof.
  • Such warning devices have been in the form of an alarm bell and more recently in .the form of a small light bulb which is continuously illuminated so long as the refrigerating system is operating correctly to maintain the predetermined desired low temperatures in the refrigerator cabinet.
  • the machine compartment at one end of the cabinet housing the refrigerant translating device of a refrigerating system is provided with an air circulating opening or openings covered by a louvered or the like grille and a small signal light bulb has been located in or in back of this grille so as to be visible therethrough at the front of the cabinet.
  • An object of my invention is to provide a means for transmitting light produced by a signal lamp located behind a wall of a refrigerator cabinet through the wall so that the light may be visible at the front of the cabinet.
  • Another object of my invention is to mount a signal lamp on the front wall of the machine compartment of a vertically elongated home freezer cabinet which is concealed by a part of the food compartment access opening closing door and to provide the lamp concealing part of this door with a transparent rod in horizontal alignment with the lamp for transmitting the light produced thereby through the door to the front of the cabinet.
  • Figure 1 is a front view of a vertical food freezing and frozen food storage refrigerator having my invention incorporated therein;
  • Figure 2 is an enlarged fragmentary vertical sectional view taken on the line 2-2 of Figure 1 showing a signal lamp and a Wiring diagram therefor.
  • FIG. 1 a vertically elongated rectilinear refrigerator of the front opening home food freezing and frozen food storage type, generally represented by the reference character Ill.
  • the refri erator cabinet it includes inner and outer metal walls ii and I2 respectively spaced apart and having any suitable or desirable insulating material i i (see Figure 2) disposed therebetween and forming relatively thick Walls of a food storage compartment 55 in the upper portion thereof.
  • the outer walls l2 of cabinet i extend downwardly below the bottom insulated wall of com.- partinent l5 and form relatively thin walls of a small machine or machinery compartment It in the lower portion of the cabinet.
  • Compartment I 5 has its access opening in the front of cabinet it normally closed by a relatively thick insulated door structure, generally represented by the reference character it, hingedly mounted upon the cabinet for horizontal swinging movement. It will be noted that the top and side edges of door iii are flush with the outer top and side walls of cabinet It and that this door covers substantially the entire front of the cabinet.
  • a toe plate or trim molding i3 is located below door I! at the level of the floor of the room in which cabinet in is installed.
  • the door structure includes inner and outer panels i8 and it respectively spaced apart and having suitable insulating material 2
  • This depending part of door H has its front flush with and formed as a continuation of the front face thereof and is provided by bending the outer panel l9 inwardly as at 23 and upwardly as at 24 where it is attached to a cross brace 25 and to the inner door panel
  • An aperture in the door front panel L9 and a horizontally aligned aperture in the upwardly extending back portion 24 thereof provides or forms a hole through the door structure H.
  • a means is located in this hole, in the depending part of door H, capable of transmitting light from th back side of the door to the front side thereof.
  • This means in the present disclosure is a round transparent rod 3
  • Rod Si is preferably formed of polymerized methyl methacrylate.
  • Ferrule 34 carries a jeweled glass or plastic lens 35 having beads or the like 3? on its outer surface adapted. to diverge light rays transmitted thereto by rod 3
  • a closed refrigerating system is associated with the refrigerator cabinet It] and includes the usual refrigerant translating device, a refrigerant evaporator and thermostatic means for controlling the refrigerant translating device.
  • the refrigerant translating device of the refrigerating system may be in the form of a motor-compressor-condenser unit (not shown) located in the machine compartment It.
  • the motor and the control therefor of such a unit is indicated diagrammatically in Figure 2 of the drawing.
  • the refrigerant evaporator (not shown) of the refrigerating system may be of any conventional or well-known form and is preferably a conduit having flat coils secured to and extending along the outer surface of the food storage compartment walls or liner i.
  • the evaporator of the refrigerating system has sufiicient surface contact with compartment walls H to maintain the interior of compartment l at temperatures far below freezing, say, for example, between 5 F. and +5 F. It is desirable to provide such a low tem perature frozen food storage refrigerator with some sort of signal device to indicate to the user thereof that the refrigerating system employed to cool the food compartment I5 is operating properly to produce the desired temperatures in this compartment. I therefore provide an electric lamp which is continuously illuminated as long as the refrigerating system operates to maintain the interior of food compartment i5 between 5 F. and i-5 F. and which is short-circuited to cause it to go out upon the occurrence of an abnormal rise in temperature within the food compartment.
  • the signal lamp in the present disclosure comprises a watt neon light bulb or lamp 4
  • is carried by a socket or the like member 42 which is secured in an ap erture provided in front wall
  • Socket member 622 is provided with two electric connectors or thermals t5 and 41 forming a part of an electric circuit for the lamp 4
  • This electric circuit includes wires 5
  • the motor of the motoncompressor-condenser unit of the refrigerating systern is indicated at 53, the thermostatic control for energizing and deenergizing motor 53 and the means for short-circuiting lamp ii is shown diagrammatically.
  • the lamp shorting means and the thermostatic control may be separate and independent switches but they are preferably com.- bined into single control device as is disclosed and fully described in the copending application of Albert 0. Grooms, S. N. 154,246, filed April 6, 1950, and entitled Electrical Apparatus.
  • thermostatic control is in the form of a snap switch having a movable arm 56 secured to the free end of a bellows 55 having its other end rigidly mounted upon a stationary U-shaped bracket 56.
  • Suitable toggle plates are provided between arm 54 and the legs of U-shaped bracket 56 to cause snap-action movements of arm 5-! as is wellknown in the electric switch art.
  • the stationary end of bellows 55 has one end of a tube 51 soldered or sealed thereto in any suitable manner and the other end of tube 5'! is soldered or sealed to a bulb 58. Any suitable volatile fluid is charged into the bellows 55, tube 5? and bulb 58 to form a closed or sealed power unit as is also well-known in the art.
  • the bulb is placed within food storage compartment it'- of cabinet ID or it may be placed in thermal contact with the evaporator of the refrigerating system associated with cabinet Ill so as to render the power unit of the thermostatic control switch effective to actuate the same in accordance with the temperature within the food storage compartment or of the evaporator therefor as is common practice.
  • Arm 54 of the thermostatic switch has attached thereto a movable spring member 53 carrying a contact 8
  • a wire 63 connects contact 62 with the one wire 5
  • a wire 64 connects movable spring member 59 to motor 53 and another wire 66 leads from motor 53 to the other side of the 1ine or wire 52 of the electric circuit.
  • ther mostatic control switch is connected in series relation with the motor 53 and both this switch and motor 53 are connected in parallel relation with the electric lamp circuit.
  • Wire 52 has a 200,000 ohm voltage dropping resistor 61 interposed therein and located between lamp 5: and the wire connector 66 to motor 53.
  • a second switch is connected in parallel relation with wires 5
  • This second switch includes a metal contact member insulated from a metal collar 72 by a Bakelite or rubber-like plug l3, a spring 14 and a plunger 15.
  • Spring M normally biases plunger 15' away from collar 12 so as to prevent this second switch from shorting out the lamp 4
  • any suitable or conventional means may be employed to stop and retain plunger 15 in a predetermined spaced relation to the arm 54 of the thermostatically operated snap switch whereby arm 54 and spring member 59 may be moved to close and/or open contacts 6! and 52 without engaging the plunger 75 under normal Operating conditions of the refrigerating system.
  • lamp 4! is continuously illuminated as long as electric current is supplied to the wires 5! and 52 and so long as the refrigerating system is operatingcorrectly to produce the temperatures desired in food compartment it? of cabinet H3.
  • arm of the thermostatically operated switch is adapted to engage and move, plunger 75, of the second switch under certain conditions.
  • the thermostatically operated switch may be set to close contacts 6! and 62 when the temperature within food compartment IE is increased to 5 F. and to open the contacts 62 and 62 when the compartment temperature is decreased to 5 F. for starting and stopping the motor 53, which drives the compressor of the motor-compressor-condenser unit of the refrigerating system. Should the closing of contacts 5! and 62 fail to start motor 53 the temperature within compartment IE will then rise considerably above 5 F. to say, for example, 10 or 12 F.
  • the closed power unit including bulb 58, tube M and bellows 55,
  • the signal lamp is within the lower machine compartment, mounted on its front wall below the level of a persons eye and concealed by the door of the refrigerator cabinet, I have provided means whereby the rays of light produced by the lamp are transmitted through the door and are visible at widely varying angles so as to prevent stooping on the part of the user to ascertain whether or not the lamp is illuminated.
  • a refrigerator cabinet having inner and outer walls with insulating material disposed therebetween forming a food storage compartment provided with a forwardly facing access opening, a door hingedly mounted at the front of said cabinet for normally closing said compartment access opening, the top and side edges of said door being substantially flush with the top and side walls of said cabinet and concealing portions of the front cabinet wall adjacent said compartment access opening, the outer cabinet walls being extended downwardly beyond the bottom insulated wall of said food compartment to form a machine compartment therebelow, a closed refrigerating system associated with said cabinet including a refrigerant translating device located in said machine compartment and a refrigerant evaporator for cooling the interior of said food storage compartment, a signal lamp mounted in an aperture provided in the front wall of said machine compartment below the bottom insulated wall of said food compartment, a switch for starting and stopping said refrigerant translating device in response to temperatures in said food compartment, an electric circuit for said lamp and said switch, said door having its lower part depending below the insulated bottom wall of said food compartment and overlying said lamp in
  • a refrigerator cabinet having inner and outer walls with insulating material disposed therebetween forming a food storage compartment provided with a forwardly facing access opening, a door hingedly mounted at the front of said cabinet for normally closing said compartment access opening, the top and side edges of said door being substantially flush with the top and side walls of said cabinet and concealing portions of the front cabinet wall adjacent said compartment access opening, the outer cabinet walls being extended downwardly beyond the bottom insulated wall of said food compartment to form a machine compartment theiebelow, a closed refrigerating system associated with said cabinet including a refrigerant translating device located in said machine compartment and a refrigerant evaporator for cooling the interior of said food storage compartment, a signal lamp mounted in an aperture provided in the front wall of said machine compartment below the bottom insulated wall of said food compartment, a switch for starting and stopping said refrigerant translating device in response to temperatures in said food compartment, an electric circuit for said lamp and said switch, said door having its lower part depending below the insulated bottom wall of said food compartment and overlying said

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)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
US303978A 1952-08-12 1952-08-12 Indicator for refrigerating apparatus Expired - Lifetime US2683970A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US303978A US2683970A (en) 1952-08-12 1952-08-12 Indicator for refrigerating apparatus
DEG7695U DE1706854U (de) 1952-08-12 1953-08-06 Anzeigeeinrichtung fuer kuehlschraenke.
DEG12403A DE930518C (de) 1952-08-12 1953-08-07 Anzeigeeinrichtung fuer Kuehlschraenke
FR1082208D FR1082208A (fr) 1952-08-12 1953-08-07 Dispositif de signalisation perfectionné pour réfrigérateur et refrigérateur comportant ledit dispositif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US303978A US2683970A (en) 1952-08-12 1952-08-12 Indicator for refrigerating apparatus

Publications (1)

Publication Number Publication Date
US2683970A true US2683970A (en) 1954-07-20

Family

ID=23174514

Family Applications (1)

Application Number Title Priority Date Filing Date
US303978A Expired - Lifetime US2683970A (en) 1952-08-12 1952-08-12 Indicator for refrigerating apparatus

Country Status (3)

Country Link
US (1) US2683970A (de)
DE (2) DE1706854U (de)
FR (1) FR1082208A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1041510B (de) * 1956-09-06 1958-10-23 Linde Eismasch Ag Kombinierte Warn- und Kontrollanlage fuer Kuehlmoebel
DE1063615B (de) * 1957-06-07 1959-08-20 Licentia Gmbh Warnanlage fuer Kuehlraeume
US4205533A (en) * 1978-07-28 1980-06-03 General Electric Company Refrigerator having a control indicator optic arrangement and indicating method
US4463348A (en) * 1981-11-23 1984-07-31 General Electric Company Refrigerator door usage monitor and display system
US4502287A (en) * 1983-07-18 1985-03-05 Safe-T-Frezz, Inc. Refrigeration system alarm device
US5009081A (en) * 1988-07-12 1991-04-23 Whirlpool Corporation Modular mechanical refrigeration unit
FR2701550A1 (fr) * 1993-02-15 1994-08-19 Merloni Elettrodomestici Spa Appareil frigorifique comprenant une armoire et une porte, des éléments de commande et/ou d'information incorporés dans la porte et des dispositifs électriques incorporés dans l'armoire.

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1203809B (de) * 1963-10-11 1965-10-28 Siemens Elektrogeraete Gmbh In der Isolierwand eines Kuehlschrankes angeordnetes, elektrisch beheiztes Butterfach
FR2563326B1 (fr) * 1984-04-19 1987-02-27 Nord Ste Electromecanique Armoire frigorifique a deux compartiments
DE202007013947U1 (de) 2007-10-05 2009-02-19 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1852707A (en) * 1930-05-15 1932-04-05 Emory L Groff Refrigerator
US2225932A (en) * 1939-07-15 1940-12-24 Westinghouse Electric & Mfg Co Refrigeration apparatus
US2358425A (en) * 1941-10-27 1944-09-19 John J Leary Warning signal for refrigerators and the like
US2447894A (en) * 1944-08-30 1948-08-24 Philco Corp Electric refrigerator alarm system
US2447895A (en) * 1944-10-28 1948-08-24 Philco Corp Alarm system for electric refrigerators
US2475069A (en) * 1945-11-09 1949-07-05 Delos R Wood Warning device for refrigerators

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1852707A (en) * 1930-05-15 1932-04-05 Emory L Groff Refrigerator
US2225932A (en) * 1939-07-15 1940-12-24 Westinghouse Electric & Mfg Co Refrigeration apparatus
US2358425A (en) * 1941-10-27 1944-09-19 John J Leary Warning signal for refrigerators and the like
US2447894A (en) * 1944-08-30 1948-08-24 Philco Corp Electric refrigerator alarm system
US2447895A (en) * 1944-10-28 1948-08-24 Philco Corp Alarm system for electric refrigerators
US2475069A (en) * 1945-11-09 1949-07-05 Delos R Wood Warning device for refrigerators

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1041510B (de) * 1956-09-06 1958-10-23 Linde Eismasch Ag Kombinierte Warn- und Kontrollanlage fuer Kuehlmoebel
DE1063615B (de) * 1957-06-07 1959-08-20 Licentia Gmbh Warnanlage fuer Kuehlraeume
US4205533A (en) * 1978-07-28 1980-06-03 General Electric Company Refrigerator having a control indicator optic arrangement and indicating method
US4463348A (en) * 1981-11-23 1984-07-31 General Electric Company Refrigerator door usage monitor and display system
US4502287A (en) * 1983-07-18 1985-03-05 Safe-T-Frezz, Inc. Refrigeration system alarm device
US5009081A (en) * 1988-07-12 1991-04-23 Whirlpool Corporation Modular mechanical refrigeration unit
FR2701550A1 (fr) * 1993-02-15 1994-08-19 Merloni Elettrodomestici Spa Appareil frigorifique comprenant une armoire et une porte, des éléments de commande et/ou d'information incorporés dans la porte et des dispositifs électriques incorporés dans l'armoire.

Also Published As

Publication number Publication date
DE930518C (de) 1955-07-18
FR1082208A (fr) 1954-12-28
DE1706854U (de) 1955-09-15

Similar Documents

Publication Publication Date Title
US2683970A (en) Indicator for refrigerating apparatus
US3174297A (en) Refrigerating apparatus with defrost control means
US2601466A (en) Defroster circuit
US2724577A (en) Automatically controlled refrigerating apparatus with heating means
US2807942A (en) Combination case heater and alarm circuit for refrigerators
US2957320A (en) Refrigerating apparatus with magnetic door seal actuated switch
US4949548A (en) Process for controlling the operation of a refrigerating unit
US2385525A (en) Refrigeration apparatus
US2458048A (en) Humidity control system
US2447895A (en) Alarm system for electric refrigerators
US2780441A (en) Automatic control system for combined freezer and cooler
US2447894A (en) Electric refrigerator alarm system
US2366635A (en) Refrigeration apparatus
US3105362A (en) Refrigerating apparatus with indicating means
US2596704A (en) Alarm switch
US2724576A (en) Refrigerating apparatus
US2632313A (en) Refrigerating apparatus having means for preventing condensation
US2297370A (en) Refrigeration
US2225932A (en) Refrigeration apparatus
US1852707A (en) Refrigerator
US2152486A (en) Control and illuminating of refrigerator cabinets
US1999191A (en) Defrosting
US2537431A (en) Refrigerator alarm system
US2658968A (en) Combined illumination and minimum temperature control for refrigerators
US2226297A (en) Refrigeration control system