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Defrosting system for refrigerator doors

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Publication number
US3859502A
US3859502A US44098874A US3859502A US 3859502 A US3859502 A US 3859502A US 44098874 A US44098874 A US 44098874A US 3859502 A US3859502 A US 3859502A
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Prior art keywords
means
humidity
power
door
heating
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Expired - Lifetime
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James J Heaney
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Anthony s Manufacturing Co
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Anthony s Manufacturing Co
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B3/00Ohmic-resistance heating
    • H05B3/84Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
    • G01N27/02Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating the impedance of the material
    • G01N27/04Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating the impedance of the material by investigating resistance
    • G01N27/12Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating the impedance of the material by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
    • G01N27/121Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating the impedance of the material by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid for determining moisture content, e.g. humidity, of the fluid
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B1/00Details of electric heating devices
    • H05B1/02Automatic switching arrangements specially adapted to apparatus; Control of heating devices
    • H05B1/0227Applications
    • H05B1/023Industrial applications
    • H05B1/0236Industrial applications for vehicles
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B2203/00Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/035Electrical circuits used in resistive heating apparatus

Abstract

A system for defrosting large commercial refrigerator doors in which electrical heating means for heating the metal frames and/or the surface of the glass is turned off or on, depending upon whether the relative humidity is below or above a selected level.

Description

[4 Jan. 7, 1975 3,287,974 11/1966 Ciem0chowski...... 73/3365 3,379,859 4/1968 Marriott........ 62/248 X 3,460,352 8/1969 Lorenz...............t.. 62/176 X 3,508,361 4/1970 62/248 X Primary Examiner-C. L. Albritton Attorney, Agent, or Firm-Richard Morganstern [57] ABSTRACT A system for defrosting large commercial refrigerator doors in which electrical heating means for heating the metal frames and/or the surface of the glass is turned off or on, depending upon whether the relative humidity is below or above a selected level,

10 Claims, 2 Drawing Figures REFRIGERATOR DOORS James J. Heaney, Glendale, Calif. Assignee: Anthony s Manufacturing, San

Fernando, Calif.

[22] Filed: Feb. 11, 1974 [21] App]. No.: 440,988

[51] Int. [58] Field of Search......

[56] References Cited UNITED STATES PATENTS 2,858,408 10/1958 Barroero.........................

United States Patent 191 Heaney DEFROSTING SYSTEM FoR [75] Inventor:

Patented Jan. 7,1975

5 Qv. MM PM Iii w a DEFROSTINGSYSTEM FOR REFRIGERATOR DOORS I FIELD OF THE INVENTION BACKGROUND OF THE INVENTION The self-service supermarkets which sell refrigerated foods frequently userefrigerated storage areas having metal framed glass doors for displaying the refrigerated products to the customer. Because the surface temperature of the metal frame, support structure and the glass door is reduced below ambient temperature by the refrigerated interior, moisture tends to condense out on the surface of these structural parts and the glass when the relative humidity reaches the dew point at the lower temperature of the. doors. One method of preventing the formation of undesired fog or frost on the refrigerator doors and pools of water from collecting on the floor has been to provide electrically resistive heaters, such as resistive wires mounted in the metal structural parts, and transparent resistive coatings placed on the glass to raise the surface temperatures of the glass and metal above the'dew point of the ambient air. However, continuous heating by this means is wasteful of electrical power'and'also increases the cooling load on the refrigerator or freezerunit.

load on the refrigeratione'quipment. Specifically, it has been found that it isnot necessary to heat the door frame and/or glass continuouslybut only when the relative humidity of the ambient air, reaches the dew point at the surface of the unheated doors The present invention provides anfarrangement; which includes a humidity-sensitive element for sensing the relative humidity of the ambient air. A control circuit, responsive to the output of the humidity-sensitive element, operates to connect or disconnect the resistance heater elements of the door frame and/or glass from an electrical power source with changes in the relative humidity. Thus under low humidity conditions the power to some or all of the resistive heater elements is shut off and is only turned on when the abient relative humidity rises to a level where the surface of the door frame and/or glass is at the dew point and condensation begins to form on the doors. a

BRIEF DESCRIPTION or THE DRAWINGS DETAILEDMDESCRIPTION Referring to the drawings in detail, the numeral indicates generally the door of a refrigerator of thetype used in supermarkets for displaying and storing food products which must be kept under refrigeration. The ..'refrigerator door 10, supported in a metal door jamb ll, is 'provided with a glass area which typically is con- 1struc'ted-of two or three panes of glass with a dead air space between to reduce heat transfer. The two or more panes of glass 12 and 14 are mounted in a metal door frame 16. The door frame anddoor jamb are provided with a plurality of resistance wires 17. One of the panes of glass is coated with a very thin transparent electrically conductive layer for heating the surface of the glass in response to the flow of electrical current therethrorighHeated glass panels of this type are well known int he art.

Electrical power is supplied to the resistive heating elements of the door 10 and the doorjamb from a standard 1 15 or 220 volt A.C. power source through a relay control switch 18 which is switched to its closed position by energizing of the associated relay coil 20. The relay coil 20 is energized from a control circuit which includes a power supply 22 connected across the 1 15 or 220 volt A.C. source. The power supply preferably includes a step-down transformer to supply a low voltage output that is isolated from the power source. The output of the power supply provides a voltage across one diagonal of a conventional resistance bridge 24. One leg of-theresistance bridge is provided by a humidity sensor element 26, which preferably is a humidity sensitive resistor made of sulfonated polystyrene, known as a Pope cell, such as described in the article Linearizing Relative Humidity Measurements by I George. Whitehaus, Instruments and Control Systems,

September 1972, pages 72 and 73. A second leg of the bridge circuit 24 is a variable resistor 28 controlled by a rotatable knob 30. Theother diagonal of the bridge circuit 24 is connected as the input to a switching circuit 32, for example. The switching circuit 32 switches from one stable state to another with changes in polar ity of theinput. The output of the switching circuit 32 in turn actuates a'control relay 34 having a switch 36 for connecting the power relay coil 20 across the 1 15/220 volt A.C. source. The relay 34 is shown by way of example, but could be replaced by a semiconductor type switch or other sensitive switching means.

A typical installation of the invention is shown in FIG. 2 in which the control circuit is mounted in a box 38, preferably mounted inside the refrigerator or freezer. Box 38 may be attached to the refrigerator door jamb 11 where the heater power wires emerge for connection to the power source. The humidity sensor 26 is mounted outside and preferably above the refrigerator door 10, the pair of leads from the sensor 26 passing through a small opening in the insulated wall 42 of the refrigerator above the door. The leads from the sensor 26 connect into the control circuit in the box 38 through a suitable plug connector 44.

The control knob 30 extends outside the box 38 and preferably is provided with a scale of index markings calibrated in percent relative humidity. Typically the control knob 30 might be set to a relative humidity of 55 percent. Normally it should be adjusted to the highest relative humidity setting which maintains the refrigerator door free of undesirable moisture. Suitable electrical connections are provided selectively between the box 38 and the wires which supply power to the heated glass pane 12 and/or the heater wires in the door frame 16 and jamb 11. Connections are also provided from the control. box 38 to a suitable standard voltage source. a

In operation, depending upon the. setting of the variable resistor 28 by the control knob 30, variations in humidity above and below the selected'level causes the switching-circuit to actuate therelay 34. When the humidity at the sensor is below the indicated level, the relay 34 opens the switch 36 thereby allowing the relay to become de-energized, opening the switch 18. This breaks the circuit to the heated wiring and window panel of the door. Any risein the humidityabove the preset level causes'th'e polarity across the output of the bridge to reverse, actuating the switching circuit 32 and glass in the refrigerator door only when the humidity increases above a preset level at which precipitation of moisture occurs.

While the preferred embodiment includes the jamb, frame, and glass heating elements as part of the controlled load, it may be desirable in some installations to control only the heating elements in the metal frame and/or jamb, while continuously heating the glass. It will be apparent that other combinations of humidity controlled heating and continuous heating of the respective heating elements are also possible utilizing theconcepts of the invention. Additionally, although a preferred embodiment of a humdity-sensitive element has been described, the principles of the present invention can readily be practiced with other types and styles of such elements.

7 What is claimed is:

l. Defrosting apparatus for display type refrigerator and freezer equipment having a door with a glass viewing area, comprising: electrical heating means associated with the door for heating portions of the door, a relative humidity-sensing element mounted outside the door for sensing ambient relative humidity, and control v isolating transformer connecting the means responsive to the humidity-sensing means for connecting the heating means to an electrical power source only whenthe relative humidity exceeds a predetermined level. v

2. Apparatus of claim 1 wherein the electrical heating means includes an electrically resistive coating on the glass viewing area, the control means connecting the coating to the power source.

3. Apparatus of claim 1 wherein the door includes a metal frame mounted in a metal jamb, and the electrical heating means includes a resistance element embedded in the frame, the control means connecting the resistance elements to the power source.

4. Apparatus of claim 1 wherein the door includesa metal frame mounted in a metal jamb, and the electrical heating means includes a resistanceelement embedded in the jamb, the control means connecting the resistance elements to the power source.

5. Apparatus of claim 1 wherein the door includes a metal frame mounted in a metal jamb, and the electrical heating means includesa resistance element embedded in the frame and jamb, the control means connecting the resistance elements to the power source.

6. Apparatus of claim 5 wherein the electrical heating means includes an electrically resistive coating on the glass viewing area, the control means connecting the coating to the power source.

7. Apparatus of claim 1 wherein the relative humidity-sensing element includes resistance means that varies in resistance in response to changes in relative humidity.

8. Apparatus of claim 7 wherein the control means includes a resistance bridge circuit with the sensing element resistance means connected as one leg of the bridge, and means for adjusting the resistance of a second leg of the bridge to vary the humidity level at which the bridge is balanced.

9. Apparatus of claim 8 wherein the control means further includes switching means responsive to the bridge circuit for making and breaking an electrical path to the heating means with unbalancing of the bridge by changes in resistance of the sensing element.

10. Apparatus of claim 9 wherein the control means furtherincludes a power supply having a lower voltage power supply to the power source.

Claims (10)

1. Defrosting apparatus for display type refrigerator and freezer equipment having a door with a glass viewing area, comprising: electrical heating means associated with the door for heating portions of the door, a relative humidity-sensing element mounted outside the door for sensing ambient relative humidity, and control means responsive to the humidity-sensing means for connecting the heating means to an electrical power source only when the relative humidity exceeds a predetermined level.
2. Apparatus of claim 1 wherein the electrical heating means includes an electrically resistive coating on the glass viewing area, the control means connecting the coating to the power source.
3. Apparatus of claim 1 wherein the door includes a metal frame mounted in a metal jamb, and the electrical heating means includes a resistance element embedded in the frame, the control means connecting the resistance elements to the power source.
4. Apparatus of claim 1 wherein the door includes a metal frame mounted in a metal jamb, and the electrical heating means includes a resistance element embedded in the jamb, the control means connecting the resistance elements to the power source.
5. Apparatus of claim 1 wherein the door includes a metal frame mounted in a metal jamb, and the electrical heating means includes a resistance element embedded in the frame and jamb, the control means connecting the resistance elements to the power source.
6. Apparatus of claim 5 wherein the electrical heating means includes an electrically resistive coating on the glass viewing area, the control means connecting the coating to the power source.
7. Apparatus of claim 1 wherein the relative humidity-sensing element includes resistance means that varies in resistance in response to changes in relative humidity.
8. Apparatus of claim 7 wherein the control means includes a resistance bridge circuit with the sensing element resistance means connected as one leg of the bridge, and means for adjusting the resistance of a second leg of the bridge to vary the humidity level at which the bridge is balanced.
9. Apparatus of claim 8 wherein the control means further includes switching means responsive to the bridge circuit for making and breaking an electrical path to the heating means with unbalancing of the bridge by changes in resistance of the sensing element.
10. Apparatus of claim 9 wherein the control means further includes a power supply having a lower voltage isolating transformer connecting the power supply to the power source.
US3859502A 1974-02-11 1974-02-11 Defrosting system for refrigerator doors Expired - Lifetime US3859502A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US3859502A US3859502A (en) 1974-02-11 1974-02-11 Defrosting system for refrigerator doors

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US3859502A US3859502A (en) 1974-02-11 1974-02-11 Defrosting system for refrigerator doors
CA 210822 CA990961A (en) 1974-02-11 1974-10-04 Defrosting system for refrigerator doors
DE19742449421 DE2449421A1 (en) 1974-02-11 1974-10-17 Apparatus for de-icing of kuehlbehaeltern
FR7435219A FR2260764B1 (en) 1974-02-11 1974-10-18
GB4673574A GB1481441A (en) 1974-02-11 1974-10-29 Door with electrical heating means
JP12496974A JPS552542B2 (en) 1974-02-11 1974-10-31

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US3859502A true US3859502A (en) 1975-01-07

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US3859502A Expired - Lifetime US3859502A (en) 1974-02-11 1974-02-11 Defrosting system for refrigerator doors

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US (1) US3859502A (en)
JP (1) JPS552542B2 (en)
CA (1) CA990961A (en)
DE (1) DE2449421A1 (en)
FR (1) FR2260764B1 (en)
GB (1) GB1481441A (en)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2722410A1 (en) * 1976-09-01 1978-03-02 Ardco Inc Means for controlling an electric signal in response to ambient conditions
US4127765A (en) * 1978-02-17 1978-11-28 Anthony's Manufacturing Company, Inc. Anti-condensation system for refrigerator doors
US4192149A (en) * 1978-09-18 1980-03-11 General Electric Company Post condenser loop case heater controlled by ambient humidity
US4261179A (en) * 1978-09-22 1981-04-14 Ardco, Inc. Input control system
US4308042A (en) * 1980-04-11 1981-12-29 Atlantic Richfield Company Heat pump with freeze-up prevention
DE8717091U1 (en) * 1987-12-30 1988-03-10 Colora Messtechnik Gmbh, 7073 Lorch, De
DE4318843A1 (en) * 1993-06-07 1994-12-08 York Int Gmbh Method for actuating frame heating systems in refrigerated furniture
US5542258A (en) * 1994-03-31 1996-08-06 Samsung Electronics Co., Ltd. Method for controlling a dew prevention heater for a refrigerator
US5778689A (en) * 1997-05-19 1998-07-14 Beatenbough; Bryan System for maintaining refrigeration doors free of frost and condensation
US5852284A (en) * 1997-01-07 1998-12-22 Libbey-Owens-Ford Co. Insulating glass with capacitively coupled heating system
US6144017A (en) * 1997-03-19 2000-11-07 Libbey-Owens-Ford Co. Condensation control system for heated insulating glass units
US6148563A (en) * 1999-03-25 2000-11-21 Hussmann Corporation Reach-in door for refrigerated merchandiser
US6226995B1 (en) 1998-06-24 2001-05-08 Rytec Corporation Frost control system for a door
US6470143B1 (en) * 1998-10-02 2002-10-22 Bernard Peyronny Heating door with spring-mounted heaters
US20040134128A1 (en) * 2003-01-10 2004-07-15 Jamison Door Company Air heated, flexible door panel
US20050091999A1 (en) * 2003-10-31 2005-05-05 Jack Chen Method and apparatus for regulating power to a heating element surrounding a freezer door
US20050268627A1 (en) * 2004-05-10 2005-12-08 Vogh Richard P Iii Anti-condensation control system
US20060026975A1 (en) * 2004-02-11 2006-02-09 John Bunch Wireless system for preventing condensation on refrigerator doors and frames
US20060090401A1 (en) * 2003-01-10 2006-05-04 Jamison Door Company Air heated, flexible door panel
US20060283850A1 (en) * 2005-06-15 2006-12-21 Jerry Davey Automated glass entrance door assembly for walk-in coolers
US20080141689A1 (en) * 2006-12-15 2008-06-19 Hussmann Corporation Refrigerated merchandiser with glass door heat control
US20090282851A1 (en) * 2005-05-04 2009-11-19 Richard Simoner Refrigerator and/or freezer comprising a frame and a lid movable relative to the frame
US20100043293A1 (en) * 2008-08-20 2010-02-25 Anthony, Inc. Refrigerator door construction including a laminated package
USD612517S1 (en) 2008-08-20 2010-03-23 Anthony, Inc. Door
US20100083672A1 (en) * 2008-10-03 2010-04-08 Doo Eui Yoon Anti-condensation control system
US20110011003A1 (en) * 2005-10-28 2011-01-20 Vogel Lynn D Flexible door with rigid insulation
US20120042666A1 (en) * 2010-08-19 2012-02-23 General Electric Company Demand response mullion sweat protection
US20130019618A1 (en) * 2006-01-10 2013-01-24 Guardian Industries Corp. Multi-mode moisture sensor and/or defogger, and related methods
US8539783B1 (en) 2004-02-11 2013-09-24 Supermarket Energy Technologies, LLC System for preventing condensation on refrigerator doors and frames
CN104541117A (en) * 2012-08-07 2015-04-22 Bsh博世和西门子家用电器有限公司 Domestic refrigerator and method for operating a heating device of a domestic refrigerator

Families Citing this family (8)

* Cited by examiner, † Cited by third party
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JPS53101374U (en) * 1977-01-20 1978-08-16
JPS53105760A (en) * 1977-02-25 1978-09-14 Fuji Electric Co Ltd Power control device for antisweat heater
FI58402C (en) * 1977-12-02 1981-01-12 Vaisala Oy Foerfarande Foer nedsaettning of icke oenskvaerda properties of the HOS an electric fuktighetsgivare
JPS54147760U (en) * 1978-04-07 1979-10-15
JPS57173477A (en) * 1981-04-11 1982-10-25 Max Co Ltd Safety device for nail driver
JPS57144373U (en) * 1981-09-24 1982-09-10
DE102006021374A1 (en) * 2006-05-08 2007-11-22 Liebherr-Hausgeräte Lienz Gmbh Cooling or freezing device has cooling or freezing compartment, that is limited to one or more sides by disc or that is locked by door or cover and device also has sensor for measuring parameters of air and disc
DE202007007344U1 (en) * 2006-12-14 2008-04-24 Liebherr-Hausgeräte Lienz Gmbh The refrigerator and / or freezer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2858408A (en) * 1957-10-25 1958-10-28 Louis F Barroero Refrigerated freezer cabinets having heated door frames and doors therefor
US3287974A (en) * 1964-03-30 1966-11-29 Holley Carburetor Co Ice condition detection device
US3379859A (en) * 1966-05-26 1968-04-23 Libbey Owens Ford Glass Co Electrically heated transparent panel and prtective circuit therefor
US3460352A (en) * 1967-07-31 1969-08-12 Ranco Inc Defrost control
US3508361A (en) * 1968-11-29 1970-04-28 Ardco Inc Sliding door assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2858408A (en) * 1957-10-25 1958-10-28 Louis F Barroero Refrigerated freezer cabinets having heated door frames and doors therefor
US3287974A (en) * 1964-03-30 1966-11-29 Holley Carburetor Co Ice condition detection device
US3379859A (en) * 1966-05-26 1968-04-23 Libbey Owens Ford Glass Co Electrically heated transparent panel and prtective circuit therefor
US3460352A (en) * 1967-07-31 1969-08-12 Ranco Inc Defrost control
US3508361A (en) * 1968-11-29 1970-04-28 Ardco Inc Sliding door assembly

Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2722410A1 (en) * 1976-09-01 1978-03-02 Ardco Inc Means for controlling an electric signal in response to ambient conditions
US4127765A (en) * 1978-02-17 1978-11-28 Anthony's Manufacturing Company, Inc. Anti-condensation system for refrigerator doors
US4192149A (en) * 1978-09-18 1980-03-11 General Electric Company Post condenser loop case heater controlled by ambient humidity
US4261179A (en) * 1978-09-22 1981-04-14 Ardco, Inc. Input control system
US4308042A (en) * 1980-04-11 1981-12-29 Atlantic Richfield Company Heat pump with freeze-up prevention
DE8717091U1 (en) * 1987-12-30 1988-03-10 Colora Messtechnik Gmbh, 7073 Lorch, De
DE4318843A1 (en) * 1993-06-07 1994-12-08 York Int Gmbh Method for actuating frame heating systems in refrigerated furniture
US5542258A (en) * 1994-03-31 1996-08-06 Samsung Electronics Co., Ltd. Method for controlling a dew prevention heater for a refrigerator
US5852284A (en) * 1997-01-07 1998-12-22 Libbey-Owens-Ford Co. Insulating glass with capacitively coupled heating system
US6144017A (en) * 1997-03-19 2000-11-07 Libbey-Owens-Ford Co. Condensation control system for heated insulating glass units
US5778689A (en) * 1997-05-19 1998-07-14 Beatenbough; Bryan System for maintaining refrigeration doors free of frost and condensation
US6226995B1 (en) 1998-06-24 2001-05-08 Rytec Corporation Frost control system for a door
US6470143B1 (en) * 1998-10-02 2002-10-22 Bernard Peyronny Heating door with spring-mounted heaters
US6148563A (en) * 1999-03-25 2000-11-21 Hussmann Corporation Reach-in door for refrigerated merchandiser
US6393768B1 (en) 1999-03-25 2002-05-28 Hussmann Corporation Method of making reach-in door for refrigerated merchandiser
US6401399B1 (en) 1999-03-25 2002-06-11 Hussmann Corporation Reach-in refrigerated merchandiser
US20040134128A1 (en) * 2003-01-10 2004-07-15 Jamison Door Company Air heated, flexible door panel
US6983565B2 (en) * 2003-01-10 2006-01-10 Jamison Door Company Air heated, flexible door panel
US20060090401A1 (en) * 2003-01-10 2006-05-04 Jamison Door Company Air heated, flexible door panel
US20050091999A1 (en) * 2003-10-31 2005-05-05 Jack Chen Method and apparatus for regulating power to a heating element surrounding a freezer door
US20060026975A1 (en) * 2004-02-11 2006-02-09 John Bunch Wireless system for preventing condensation on refrigerator doors and frames
US8539783B1 (en) 2004-02-11 2013-09-24 Supermarket Energy Technologies, LLC System for preventing condensation on refrigerator doors and frames
US20050268627A1 (en) * 2004-05-10 2005-12-08 Vogh Richard P Iii Anti-condensation control system
US7340907B2 (en) 2004-05-10 2008-03-11 Computer Process Controls, Inc. Anti-condensation control system
US7886554B2 (en) * 2005-05-04 2011-02-15 Liebherr-Hausgeräte Lienz Gmbh Refrigerator and/or freezer comprising a frame and a lid movable relative to the frame
US20090282851A1 (en) * 2005-05-04 2009-11-19 Richard Simoner Refrigerator and/or freezer comprising a frame and a lid movable relative to the frame
US7259359B2 (en) * 2005-06-15 2007-08-21 Commercial Refrigerator Door Company, Inc. Automated glass entrance door assembly for walk-in coolers
US20060283850A1 (en) * 2005-06-15 2006-12-21 Jerry Davey Automated glass entrance door assembly for walk-in coolers
US8733024B2 (en) 2005-10-28 2014-05-27 Jamison Door Company Flexible door with rigid insulation
US20110011003A1 (en) * 2005-10-28 2011-01-20 Vogel Lynn D Flexible door with rigid insulation
US20130019618A1 (en) * 2006-01-10 2013-01-24 Guardian Industries Corp. Multi-mode moisture sensor and/or defogger, and related methods
US7905101B2 (en) * 2006-12-15 2011-03-15 Hussmann Corporation Refrigerated merchandiser with glass door heat control
US20110126561A1 (en) * 2006-12-15 2011-06-02 Hussmann Corporation Refrigerated merchandiser with glass door heat control
US20080141689A1 (en) * 2006-12-15 2008-06-19 Hussmann Corporation Refrigerated merchandiser with glass door heat control
USD612517S1 (en) 2008-08-20 2010-03-23 Anthony, Inc. Door
US20100043293A1 (en) * 2008-08-20 2010-02-25 Anthony, Inc. Refrigerator door construction including a laminated package
US8613161B2 (en) 2008-08-20 2013-12-24 Anthony, Inc. Refrigerator door construction including a laminated package
US20100083672A1 (en) * 2008-10-03 2010-04-08 Doo Eui Yoon Anti-condensation control system
US8250873B2 (en) 2008-10-03 2012-08-28 Anthony, Inc. Anti-condensation control system
US20120042666A1 (en) * 2010-08-19 2012-02-23 General Electric Company Demand response mullion sweat protection
US9291383B2 (en) * 2010-08-19 2016-03-22 Clemson University Demand response mullion sweat protection
CN104541117A (en) * 2012-08-07 2015-04-22 Bsh博世和西门子家用电器有限公司 Domestic refrigerator and method for operating a heating device of a domestic refrigerator

Also Published As

Publication number Publication date Type
FR2260764A1 (en) 1975-09-05 application
CA990961A (en) 1976-06-15 grant
CA990961A1 (en) grant
GB1481441A (en) 1977-07-27 application
DE2449421A1 (en) 1975-08-14 application
JPS552542B2 (en) 1980-01-21 grant
FR2260764B1 (en) 1978-05-05 grant
JPS50110144A (en) 1975-08-29 application

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