Forced Circulation Patents (Class 62/455)
  • Publication number: 20040163408
    Abstract: A refrigerator which has a pleasant front appearance by improving a structure to circulate air through a machine room thereof, and which restrains a transmission of operational noise from an interior to an outside of the machine room, thus performing a silent operation. The refrigerator has a cabinet defining a storage compartment therein, and a machine room defined at a top of the cabinet. The machine room is partitioned in an interior thereof into front and rear chambers by a noise buffering plate having a plurality of vent holes. A main inlet hole and a main outlet hole are provided side-by-side at an upper surface of the front chamber of the machine room so as to allow air to circulate through the machine room. A compressor, a condenser and a cooling fan are installed in the rear chamber of the machine room.
    Type: Application
    Filed: October 23, 2003
    Publication date: August 26, 2004
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Yoon-Young Kim, Won-Jae Yoon
  • Patent number: 6772606
    Abstract: An evaporator fan assembly includes a shroud have a plurality of irregularly staggered shroud legs radially outwardly spaced from a fan orifice and terminating in a motor mount. A motor is removably secured to the motor mount by a motor clip. The motor clip preferably includes a pair of legs terminating in a catch or hook that may be secured to a cross-member or support bar between the shroud legs. The motor is secured in a centered position to properly align a fan blade in the fan orifice. The fan blade is secured to the drive shaft of the motor which passes through a hole in the motor mount. A shroud cover may be secured to the shroud.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: August 10, 2004
    Assignee: Maytag Corporation
    Inventors: Bruce A. Kopf, Tim L. Coulter, Richard A. Kirchner, Michael A. Bowen, Troy M. Anderson, Eric K. Silbaugh
  • Publication number: 20040040338
    Abstract: A refrigerator in which a machine room and an air cooling chamber having an evaporator, are placed at a top of a cabinet to maximize the storage capacity of lower sections of storage compartments. The refrigerator includes a cabinet defining a storage compartment therein. A top projection part is formed by projecting a rear portion of a top of the cabinet upward. The top projection part defines the air cooling chamber therein, such that the air cooling chamber extends upward from an upper portion of the storage compartment. The machine room is defined on the top of the cabinet at a position in front of the top projection part, and receives a compressor and a condenser therein.
    Type: Application
    Filed: August 21, 2003
    Publication date: March 4, 2004
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Jae Seung Lee, Myung Wouk Kim, Gi Joong Jeong, Jong Dal Lee, Ji Sick Hwang, Sang Gyu Jung
  • Publication number: 20040000162
    Abstract: A kimchi refrigerator which is capable of effectively using an interior storage space. The kimchi refrigerator includes a cabinet with two or more storage compartments provided in the cabinet storing kimchi and a machine room which is located in the cabinet and houses electrical devices. The machine room is arranged from a front of the cabinet to the rear of the cabinet at a position under one of the storage compartments, thus enlarging an interior storage space of one or more storage compartments under which the machine room is not located.
    Type: Application
    Filed: February 11, 2003
    Publication date: January 1, 2004
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Yo-Hyun Song
  • Patent number: 6655169
    Abstract: A refrigerator airflow distribution assembly includes an airflow diverter in flow communication with freezer compartment air. The diverter includes a primary flow path and at least one diverter opening therethrough, and together with a cover forms a secondary flow path in flow communication with the first flow path through the diverter opening. Freezer compartment air is directed to the primary flow path, and a portion of the air in the primary flow path flows through the diverter openings and into the secondary flow path, and is introduced to the fresh food compartment through one or more vents in the cover. Metered airflow through the diverter reduces temperature gradients in the refrigerator, as well as provides a regulated temperature source for a storage drawer in the fresh food storage compartment.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: December 2, 2003
    Assignee: General Electric Company
    Inventors: Jeffery Allen Tupis, Martin Christopher Severance, Arthur Wilson Scrivener, Gerald Eugene Sturgeon, Richard DeVos, Steven Gray
  • Publication number: 20030029189
    Abstract: A refrigerator condenser system includes an integral condenser coil and hot gas loop embedded in a floor and a vertical wall of a refrigeration compartment to increase heat transfer efficiency to ambient air. The condenser system is cast in place within the refrigerator cabinet to form a reliable, high efficiency, maintenance free refrigerator condenser system.
    Type: Application
    Filed: December 22, 2000
    Publication date: February 13, 2003
    Inventor: Mark Wilson
  • Patent number: 6453804
    Abstract: The present invention relates to a hinge assembly for a door of a kimchi storage device which mounts a door opening and closing a storage chamber of the kimchi storage device on the upper surface of a body. There is provided an integral hinge assembly for a door of a kimchi storage device which can prevent the impact during door opening and closing operations and can prevent the damage of the door by interconnecting: a cover plate fixed to a body; a hinge housing in which there are inserted an elastic means, a support plate backing up the elastic means, a control plate controlling a springback force and a support member connected to the elastic means and supporting a force between the elastic means and a press member; a turn member connected with the press member and fixed to the door.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: September 24, 2002
    Assignee: Mando Climate Control Corporation
    Inventor: Young-gil Lee
  • Patent number: 5902618
    Abstract: An apparatus for chilling hot-bagged food includes a refrigeration device providing chilled air and an enclosure for containing the chilled air. A fan blows the chilled air in a stream within the enclosure and an open-work support movably holds a bag of hot food within the enclosure and in the path of the stream of chilled air. Thus, movement of the bag of hot food both agitates food within the bag and exposes surfaces of the bag to the stream of chilled air to rapidly cool the hot-bagged food. A method of processing food includes packaging and sealing a quantity of cooked hot food into a plastic bag then placing the plastic bag and hot food in an open-work basket movably mounted on a support.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: May 11, 1999
    Inventor: Hans Haasis, Jr.
  • Patent number: 5782106
    Abstract: A refrigerator includes a freezer compartment, a refrigerator compartment, a warmer compartment, a machine compartment having a compressor and a condenser for cooling the freezer compartment and the refrigerator compartment, and a heat transmitter for transmitting heat from the machine compartment to the warmer compartment. The heat transmitter includes a heat transmitting member for transmitting heat from the machine compartment to the warmer compartment. A heat conducting member is attached to the heat transmitting member for conducting heat from the machine compartment to the heat transmitting member.
    Type: Grant
    Filed: December 27, 1996
    Date of Patent: July 21, 1998
    Assignee: LG Electronics Inc.
    Inventor: Sang Tae Park
  • Patent number: 5735138
    Abstract: A refrigerator includes separate freezing and refrigerating compartments, each having is own evaporator and air circulating fan. The evaporator and fan of the refrigerating compartment are mounted to a housing that is attached to a rear wall of the refrigerator. The housing includes an air inlet and an air outlet, the outlet including vertically spaced openings. A blade is mounted in the housing and is driven about a vertical axis for distributing cool air to the outlet openings.
    Type: Grant
    Filed: September 19, 1996
    Date of Patent: April 7, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Suck Haong Park, Yong Myoung Kim
  • Patent number: 5722252
    Abstract: An improved cooling air distribution apparatus for a refrigerator which is capable of easily installing a rack at a predetermined position in a refrigerator compartment by changing the structure of a rack and a cooling air distribution duct as well as distributing a cooling air in multiple directions, for thus enhancing a cooling air circulation efficiency in the refrigerator, which includes a plurality of receiving groove formed in a front surface of the cooling air distribution duct and each side wall surface in the refrigerator compartment, a plurality of cooling air inlet formed in the engaging groove for introducing the cooling air into the refrigerator compartment, and an opening/closing unit hinged to a reverse side of each cooling air inlet for opening/closing the cooling air inlet, and a rack duct insertable into each engaging groove and each cooling air inlet for discharging the cooling air into the refrigerator compartment in multiple directions.
    Type: Grant
    Filed: October 10, 1996
    Date of Patent: March 3, 1998
    Assignee: LG Electronics, Inc.
    Inventors: Ho Sul Kang, Kyung Kil Heo
  • Patent number: 5720185
    Abstract: A refrigerator having a cool air dispersing shelf is inherently installed with a dispersing apparatus for spreading the cool air to the shelf for consistently dispersing the cool air throughout the interior of a cooling chamber within a short time period, and supplies the cool air to respective shelves simply by installing/removing the shelves. For this, a supply duct circulated with the cool air supplied into the cooling chamber therethrough has at least one discharging hole toward the cooling chamber, and an open/close member is installed in the supply duct for opening/closing the discharging hole in accordance with the installation/separation of the shelf. Also, the shelf is formed with cool air spray holes in the lower plane and a pushing portion provided by one end of a cool air suction hole for opening/closing the open/close member.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: February 24, 1998
    Assignee: Daewoo Electronics Co., Ltd.
    Inventor: Sang-Moo Lee
  • Patent number: 5715703
    Abstract: A refrigerator has fresh food and freezer compartments, and each of the fresh food and freezer compartments has upper and lower portions. A first air duct extends from the upper portion of the freezer compartment to the upper portion of the fresh food compartment, and a second air duct extends between the lower portion of the freezer compartment and the lower portion of the fresh food compartment. A first fan is arranged to draw first air through the first air duct from the upper portion of the freezer compartment and to discharge the first air into the upper portion of the fresh food compartment. A second fan is arranged to draw second air from the lower portion of freezer compartment and to discharge the second air into the upper portion of the freezer compartment.
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: February 10, 1998
    Inventors: Bruce A. Kopf, Lyle J. Berkenbosch, Les J. Ott
  • Patent number: 5713215
    Abstract: A refrigerator having quick freezing facility is disclosed. The refrigerator includes a body, an evaporator, and a blowing fan. The body has freezing compartment which has a back wall formed with a plurality of cool air discharge openings. The evaporator is disposed adjacently to said cool air discharge openings in a rear part of the body and is tilted backward at a predetermined angle. The blowing fan is disposed in a position near the bottom rear area of the evaporator and blows toward the evaporator to blow cool air produced by the evaporator to the freezing compartment through the air discharge openings. Since the evaporator is disposed near the air discharging openings and the blowing fan blows toward the evaporator, the temperature of the cool air is lowered and then quick freezing is made efficiently.
    Type: Grant
    Filed: October 29, 1996
    Date of Patent: February 3, 1998
    Assignee: Daewoo Electronics Co., Ltd.
    Inventor: Woo-Yeop Choi
  • Patent number: 5706673
    Abstract: Disclosed is a refrigerator for uniformly cooling a freezing compartment through the use of outlets and a passageway at the inner portion of the base plate of the freezing compartment. The base plate is provided with an upper plate having a plurality of air outlets and a lower plate having a plurality of protrusions for supporting the upper plate. The lower plate is manufactured from an insulating material. A chilled air passageway for exhausting the chilled air from the freezing compartment is formed between the upper and lower plates. The chilled air generated by an evaporator flows into the freezing compartment through a main-inlet and sub-inlets formed at the rear wall of the freezing compartment, and is exhausted through a main air exhausting outlet and the sub-outlets formed in the base plate. The chilled air exhausted through the sub air exhausting outlets flows through the chilled air passageway, that is formed in the base plate and joins the chilled air from the main air exhausting outlet.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: January 13, 1998
    Assignee: Daewoo Electronics Co., Ltd.
    Inventor: Jun-Chul Shin
  • Patent number: 5502983
    Abstract: A condenser coil and a method of manufacturing thereof, with an extended heat transfer surface attached to a serpentine coil such that the assembly can be folded into a U-shape cross section to allow for cross flow of air through and around the condensing coil. In one embodiment, wires are attached to the serpentine coil in a preliminary stage of manufacture across a width of the coil along its length and the coil is wrapped into a U-shape. In a second embodiment, a planar flat plate is attached to a serpentine coil and the coil and flat plate are wrapped into a U-shape.
    Type: Grant
    Filed: April 12, 1995
    Date of Patent: April 2, 1996
    Assignee: Whirlpool Corporation
    Inventor: James F. Dasher
  • Patent number: 5433086
    Abstract: Disclosed herein is temperature regulating device for an air-circulated refrigerator capable of independently controlling the temperature of the freezer and the fresh food compartments air communicating with each other, by employing an evaporator, a first and a second fans which are all installed in the freezer compartment, and a thermostatic control circuitry.
    Type: Grant
    Filed: October 7, 1993
    Date of Patent: July 18, 1995
    Assignee: Daewoo Electronics Co., Ltd.
    Inventors: Kwang-Yeon Cho, Kee-Tae Lee, Yi-Wook Choi
  • Patent number: 5428973
    Abstract: A refrigerator having an air passage duct which contains therein a wire and tube condenser where a cooling air caused by a fan flows. A refrigerator includes: a machine compartment having a fan therein for causing a flow of cooling air, located at a bottom of the refrigerator; an air passasge duct, connected to the machine compartment, containing a wire and tube condenser (referred to as a wire condenser hereinafter), the air duct and the wire condenser being placed at the bottom of the refrigerator; and an exhaust port for discharging an air used for radiating a heat of the wire condenser, wherein the air passage duct is formed in a zigzag shape so that the cooling air flowing through the air passage duct crosses through the wire condenser.
    Type: Grant
    Filed: November 13, 1992
    Date of Patent: July 4, 1995
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Minoru Temmyo, Masato Tago, Koji Kashima
  • Patent number: 5347827
    Abstract: A modular refrigeration apparatus containing a cabinet with a front opening and divided into lower and upper portions, for separately receiving a plurality of removable modular units, said removable modular units including one of a selected plurality of interchangeable storage units and a universal refrigeration unit. A selected one of the plurality of interchangeable storage units is positioned within the upper portion of the cabinet for storing a plurality of containers. The refrigeration unit is positioned within the lower portion of the cabinet and in communication with the upper portion for cooling the entire interior of the cabinet. The cabinet is designed so that the interchangeable storage units and refrigeration unit can be respectfully removed or inserted from the cabinet without affecting the other units.
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: September 20, 1994
    Assignee: The Coca-Cola Company
    Inventors: Arthur G. Rudick, Shaun B. Gatipon, Howard W. Wachenheim
  • Patent number: 5319937
    Abstract: A thermoelectric cooler and warmer which has a unique ventilation system to distribute cool or warm air throughout the unit so that there are no hot or cool spots, a door which is mounted so that it can be easily opened whether the door is facing up or facing front, a lid or door latch which can be easily and reliably operated, and/or a handle configuration which does not unbalance the unit so that it can be advantageously placed with the door up or on an end with the lid or door facing front so that it can be advantageously used as a conventional chest or as a portable mini-refrigerator or warming unit.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: June 14, 1994
    Assignee: Igloo Products Corporation
    Inventors: Udo Fritsch, James J. J. Costello
  • Patent number: 5253700
    Abstract: A climate control system (25) for the cabin (13) of a tractor (11) coupled to a trailer (12) that has a refrigeration unit (17). The refrigeration unit supplies cooled air to the trailer through an outlet duct (21) and expels warmed air used to ventilate the refrigeration system, to ambience through a ventilation exhaust duct (19). The climate control system has a duct (48) for receiving and conducting warmed ventilation air from the refrigeration system exhaust duct to the cabin. The system also has a duct (51) for receiving and conducting cooled air from the refrigeration system outlet duct to the cabin. The ducts are coupled to an air flow control unit (26) which controls the flow of air through the ducts and into the cabin.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: October 19, 1993
    Inventor: George M. Early, Jr.
  • Patent number: 5177975
    Abstract: Apparatus for preparation of process water for presses, such as printing presses, or the like, including conditioning apparatus for conditioning the process water and cooling apparatus for cooling the process water, comprise a housing (1) which is spatially divided into upper and lower housing spaces (A, B), with the conditioning apparatus (2, 3, 4, 8, 13, 22-24) arranged in the lower housing space (B) and the cooling apparatus (9, 10) and a fan arrangement (11, 12) to produce a substantially upwardly directed exhaust stream of cooling air out of the housing arranged in the upper housing space (A). The cooling apparatus includes a refrigeration condenser arranged close to a cooling-air exhaust opening (12) at an upper side of the housing (1) so that the refrigeration condenser is subjected to cool air before it exits into a surrounding space.
    Type: Grant
    Filed: July 3, 1991
    Date of Patent: January 12, 1993
    Assignee: Technotrans GmbH
    Inventor: Heinz-Josef Mertens
  • Patent number: 5151063
    Abstract: An air conditioning system comprises an air conditioning unit, a blower for blowing conditioned air, a polygonal branch chamber of prescribed volume, a main duct with damper for delivering conditioned air from the blower to the polygonal branch chamber and branch ducts with dampers for delivering the conditioned air from the polygonal branch chamber to a plurality of discrete spaces. The polygonal branch chamber ensures quiet operation. An electrical circuit board is mounted on the bottom of the polygonal branch chamber and all wiring required for control of the dampers and other components of the system are connected with this board to enable maintenance work to be conducted at a signal location. A circular inspection hole with removable cover is formed in the bottom of the polygonal branch chamber to provide easy access to its interior.
    Type: Grant
    Filed: October 3, 1990
    Date of Patent: September 29, 1992
    Assignee: Zexel Corporation
    Inventors: Ichiro Tanaka, Seiji Sasaki, Zen-ichi Kakubari, Osamu Kojima
  • Patent number: 4932224
    Abstract: A base cover is disclosed which can be set to any height between the minimum and maximum heights created when a refrigerator cabinet is adjusted into its final position at an installation site. The base cover is made of three piece overlapping construction. Particularly, a top piece comprises an elongated plate which is securable to a refrigerator cabinet base assembly. A front piece is provided with a plurality of vent openings and screw slots for adjustably fastening the front piece to the top piece. Particularly, the front piece overlaps at least part of the top piece and the vertical height adjustment is provided by varying the overlap by adjusting the position of fastening scews in the screw slots. The front piece includes additional screw slots through which screws may be inserted and fastened to a bottom piece for varying the overlap therebetween to provide further height adjustment.
    Type: Grant
    Filed: May 3, 1989
    Date of Patent: June 12, 1990
    Assignee: Whirlpool Corporation
    Inventors: Glenn E. Katterhenry, John C. Slingerland
  • Patent number: 4768353
    Abstract: An injection molded plastic air return hood for a refrigerator fresh food compartment provides an angular opening directed away from an air inlet opening for preventing short circuiting of refrigerated air in the compartment. An air return hood is prevented for each air return outlet opening in the compartment and the opening is directed towards a side wall of the compartment. Accordingly, the refrigerated air from the inlet opening must travel a more circuitous path through the refrigerator compartment, thus providing a more thorough refrigeration effect.
    Type: Grant
    Filed: July 24, 1987
    Date of Patent: September 6, 1988
    Assignee: Whirlpool Corporation
    Inventor: William J. Bushser
  • Patent number: 4517809
    Abstract: The disclosed invention is an energy conservation system for heating and ventilating structures, particularly buildings with large refrigeration units such as convenience stores, grocery stores and restaurants. The system employs a plurality of manifold assemblies in conjunction with existing air conditioning and heating units to control air flow to recover heat from external heat exchangers of refrigeration units or provide interior ventilation with exterior air. The manifold assemblies preferably employ either a flexible damper gate sliding along tracks on a pivoted gate damper to control air flow.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: May 21, 1985
    Inventor: Wilber S. Hoyt
  • Patent number: 4490990
    Abstract: This invention relates to a refrigerator and more particularly to providing a unitary high-side refrigeration system component unit which can be adapted for mounting in machinery compartments of different designs. Essentially, the unitary high-side refrigeration component unit is designed so that selected high-side components forming refrigeration systems of varying capacities may be assembled as a part of the unit or interchanged to be accommodated in machine compartments of different designs.
    Type: Grant
    Filed: December 29, 1983
    Date of Patent: January 1, 1985
    Assignee: General Electric Company
    Inventors: Gary L. Chastine, Norbert P. Haag
  • Patent number: 4490991
    Abstract: A unitary high-side refrigeration system assembly adapted to be installed in the machinery compartment of a domestic refrigerator including a condensate collection support member on which the refrigeration system high-side components including the compressor, condenser and air moving means are mounted.
    Type: Grant
    Filed: December 29, 1983
    Date of Patent: January 1, 1985
    Assignee: General Electric Company
    Inventor: James R. Griffin
  • Patent number: 4437868
    Abstract: A cold storage enclosure for storing of food products includes a freezer using ammonia as the refrigerant. At least one exhaust unit is provided to exhaust the enclosure in the event of a break in the refrigeration equipment which releases damaging ammonia gases. The exhaust unit is mounted to a coupling chamber unit secured to the roof of the enclosure. The chamber unit includes a tubular insulating wall support with an insulated vapor proof bearier panel secured to the inner end and a damper unit secured in outwardly spaced relation to form a coupling chamber therebetween. An interconnecting linkage is located within the chamber with the linkage coupled to the damper and including a moving arm for forced removal of the bearier panel. A heater in the chamber holds the temperature above freezing to ensure positive operation of the damper even though moisture may accummulate in the chamber and on the operator and/or linkage.
    Type: Grant
    Filed: May 24, 1982
    Date of Patent: March 20, 1984
    Inventor: Ronald H. Kuhlman
  • Patent number: 4399667
    Abstract: Improved chilling apparatus for aircraft meal tray storage and/or serving carts utilizes a slidable tray type of bunker member for receiving dry ice or other cooling material. The bunker member is preferably of thermoformed plastic, is insulated on its bottom and sides, and has a channeled bottom which supports pieces of dry ice while permitting air to be circulated by a blower under the dry ice pieces as well as around and over them. At its downstream end, the bunker has an air flow turning surface and an air discharge opening through its bottom. At its upstream end, an opening directs return air which has passed over the meal trays to an angularly positioned blower located in the cart housing above the inlet end of the bunker.
    Type: Grant
    Filed: June 1, 1982
    Date of Patent: August 23, 1983
    Assignee: UOP Inc.
    Inventor: Richard C. Lamb
  • Patent number: 4397159
    Abstract: Chilling apparatus especially adapted for airline food tray serving carts has a small blower at one upper end of the inside of the cart which exhausts air across a pan of dry ice or other cooling material removably positioned on an upper shelf of the cart. Spacer means in the cart enclosure prevent the trays stacked therein from blocking a vertical air flow passage at each end of the cart. Thus, the chilled air is directed downwardly from the pan over the inside wall of a door on the cart. The chilled air then passes horizontally over at least a portion of the trays containing items to be chilled and is sucked upwardly along the other inside end wall of the cart to the blower inlet duct. The apparatus is very light in weight and can provide sufficiently uniform cooling to the items on each tray which must be chilled when a container on each tray is being simultaneously heated.
    Type: Grant
    Filed: November 16, 1981
    Date of Patent: August 9, 1983
    Assignee: UOP Inc.
    Inventor: Malcolm J. Dodd
  • Patent number: 4156352
    Abstract: A refrigerator has a machinery compartment at the bottom for housing a motor-compressor unit and a condenser and has an air inlet opening at the front thereof extending substantially across the width of the compartment. The machinery compartment includes a forward section for receiving the condenser and a duct at the rear portion thereof for receiving the motor-compressor unit. The duct has an air inlet at one end for receiving air from the forward section. The condenser extends generally horizontally from one side wall of the compartment across a substantial portion of the forward section. A drain pan is supported above the condenser for collecting water draining from the interior of the refrigerator. The drain pan additionally functions as a baffle to cause air entering the forward section to flow effectively over the condenser.
    Type: Grant
    Filed: November 21, 1977
    Date of Patent: May 29, 1979
    Assignee: General Electric Company
    Inventors: Robert B. Gelbard, Ronald D. Gregg
  • Patent number: 4009590
    Abstract: A single evaporator, single fan combination refrigerator includes a temperature control system which thermostatically maintains the fresh food compartment at a desired temperature by cycling the refrigeration system on and off as required, and which controls freezer compartment temperature by varying the airflow through a duct conducting refrigerated air from the evaporator chamber to the fresh food compartment. In order to compensate for variations in freezer compartment temperature which would otherwise result when the setting of the fresh food control is changed, the airflow through the duct is varied as a funtion of the setting of the fresh food control, as well as of the freezer control.
    Type: Grant
    Filed: January 2, 1976
    Date of Patent: March 1, 1977
    Assignee: General Electric Company
    Inventors: William M. Webb, William F. Hester
  • Patent number: 4009591
    Abstract: A single evaporator, single fan combination refrigerator includes a temperature control system which thermostatically maintains the fresh food compartment at a desired temperature by cycling the refrigerator system on and off as required, and which controls freezer compartment temperature by varying airflow through a duct conducting refrigerated air from the evaporator chamber to the fresh food compartment. Variable airflow control apparatus comprising a mechanical summer operating an air valve varies airflow through the duct as a function of the settings of both the fresh food control and the freezer control.
    Type: Grant
    Filed: January 2, 1976
    Date of Patent: March 1, 1977
    Assignee: General Electric Company
    Inventor: William F. Hester
  • Patent number: 4009589
    Abstract: A single evaporator, single fan combination refrigerator includes a temperature control system which thermostatically maintains the fresh food compartment at a desired temperature by cycling the refrigerator system on and off as required, and which controls freezer compartment temperature by varying airfow through a pair of ducts conducting refrigerated air from the evaporator chamber to the fresh food compartment. The freezer control operates a pair of main dampers disposed in the ducts. In order to compensate for variations in freezer compartment temperature which would otherwise result when the setting of the thermostatic fresh food control is changed, a pair of compensating dampers are also disposed in the ducts and operatively connected to the fresh food control for ganged operation with the thermostatic control. The dampers are constructed to only partially block airflow when in the fully closed position.
    Type: Grant
    Filed: January 2, 1976
    Date of Patent: March 1, 1977
    Assignee: General Electric Company
    Inventors: William M. Webb, Stephen G. Boughton