With Ventilation Means Therefor Patents (Class 62/454)
  • Patent number: 11609005
    Abstract: A heating, ventilation, and/or air conditioning (HVAC) system, includes a housing configured to direct an air flow through an air flow path of the housing and an evaporator configured to translate between a first position and a second position, such that the evaporator is disposed within the air flow path in the first position and the evaporator is disposed external to the air flow path in the second position.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: March 21, 2023
    Assignee: Johnson Controls Tyco IP Holdings LLP
    Inventor: Anil V. Bhosale
  • Patent number: 11425843
    Abstract: A heat radiation structure (10) includes a casing (4) configured to accommodate a heating element (1), and a heat-sink type component (2) configured to directly or indirectly absorb heat from the heating element (1), contactlessly face the casing (4), and conduct the heat to the casing (4) via air existing in an internal space of the casing (4), wherein at least either the heat-sink type component (2) or the casing (4) is configured in such a way that, when heat is generated from the heating element (1), a distance between the heat-sink type component (2) and the casing (4) becomes nearer in a region of the internal space (3) in which temperature does not rise relatively easily than in a region of the internal space (3) in which temperature rises relatively easily.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: August 23, 2022
    Assignee: NEC Platforms, Ltd.
    Inventors: Takahiro Yagi, Kiyotaka Yokoyama, Akira Katsumata, Wataru Imura
  • Patent number: 8978270
    Abstract: A method for drying or removing water from a wall cavity or structure without the need to tear to make holes, tear apart the structure, or use suction cups. The method uses a reversible portable moisture removal system for flowing pressurized heated air at a targeted location and for creating a vacuum to withdraw moist air from the wall cavity or structure a the moisture removal housing. The method dries wet walls in less time than current systems while also being reversible to remove moist air from wall cavities and structures.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: March 17, 2015
    Assignee: Advanced Moisture Solutions, LLC
    Inventors: Wesley Clyde Carlton, David Laurence Green
  • Patent number: 8857202
    Abstract: A module is provided having a foundation and a skeleton that are structural and modular in design. The skeleton can be constructed on top of the foundation. The skeleton supports an HVAC assembly. Equipment racks, such as a server racks, can be housed within the module and independently movably supported by translation assemblies. The translation assemblies are embedded within the foundation and skeleton. Any number of modules can be attached end to end to form a system of a desired length, side to side to form a system of a desired width, or vertically to form a system of desired height. The entire system, once assembled and wired, can easily be conjoined or moved to a desired destination. The air flow path within the module is selected by the operator. The system is expandable in size and capacity as the operational needs increase.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: October 14, 2014
    Assignee: Silver Linings Systems, LLC
    Inventor: Alan P. Meissner
  • Patent number: 8590337
    Abstract: A condenser assembly for an appliance is provided. The condenser assembly can include a horizontally extending condenser coil assembly that has a plurality of supporting connectors that are arranged at an angle to the flow direction of cooling air. Cooling air is drawn through the refrigerator and across a length of the condenser coil by an air mover. Additionally, a baffle works in conjunction with the air mover to direct cooling air through the condenser coil and connectors.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: November 26, 2013
    Assignee: Eletrolux Home Products, Inc.
    Inventor: Juan Antonio Contreras Lafaire
  • Patent number: 8528357
    Abstract: An ice-making machine has a box-shaped lower housing with an ice storage bin, a box-shaped upper housing mounted on a rear portion of the lower housing, an ice-making mechanism within the front portion of a machine compartment in the upper housing, and a freezing unit installed behind the ice-making mechanism for supplying refrigerant to the ice-making mechanism. An open-and-close ice-access lid is pivotally mounted between the lower end of the upper housing and the the lower housing. An air intake passage introduces outside cooling air from the front face of the lower housing into the machine compartment along inner surfaces of one side wall and a rear wall of the lower housing. An air discharge passage is provided for passing the air after cooling to flow outward along inner surfaces of the rear wall and the other side wall of the lower housing to an exterior discharge from the front face of the lower housing.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: September 10, 2013
    Assignee: Hoshizaki Denki Kabushiki Kaisha
    Inventors: Nobuo Kondo, Kiyoshi Yamaoka, Hideyuki Tashiro, Takeshi Ueda, Takashi Hibino, Akira Harata
  • Publication number: 20120266619
    Abstract: A cooling system for use in cooling an interior volume. The cooling system includes a first cooling assembly that is positioned within a housing that defines the interior volume. The first cooling assembly facilitates cooling the interior volume of the housing. A second cooling assembly is positioned external to the housing in flow communication with the first cooling assembly. The second cooling assembly is configured to channel a cooling fluid to the first cooling assembly. A control system is coupled to the first and second cooling assemblies. The control system is configured to channel cooling fluid from the second cooling assembly to the first cooling assembly when a temperature of air external to the housing is less than a temperature of air inside the housing, to facilitate reducing the air temperature inside the housing.
    Type: Application
    Filed: April 21, 2011
    Publication date: October 25, 2012
    Inventor: Bradley Douglas Shaw
  • Publication number: 20120090347
    Abstract: An airflow diverter for a cooling compartment. The airflow diverter is disposed between an evaporator outlet and an evaporator inlet of the cooling compartment, which forms a barrier between the evaporator outlet and evaporator inlet by preventing direct flow of air from the evaporator outlet to the evaporator inlet. Because air is prevented from immediately flowing back to the evaporator inlet from the evaporator outlet, the airflow path of cooled air exiting the evaporator outlet is lengthened. As such, the airflow diverter allows cool air to fully circulate within the cooling compartment before returning to the evaporator inlet.
    Type: Application
    Filed: October 29, 2010
    Publication date: April 19, 2012
    Inventors: Michelle Diana GROSS, Omar Haidar, Amol Suresh Mulay
  • Publication number: 20120047939
    Abstract: A refrigerator appliance includes a freezer compartment and at least one position-adjustable partition located in the freezer compartment. The at least one position-adjustable partition is configured to be selectively deployed in a first position such that a space is defined in the freezer compartment that causes a reduction in an amount of inlet airflow that contacts one or more portions of the freezer compartment that are outside the defined space.
    Type: Application
    Filed: January 11, 2011
    Publication date: March 1, 2012
    Inventors: Brent Alden JUNGE, William Arnold Brown, JR., John Simpson
  • Publication number: 20120023978
    Abstract: A refrigerator and a driving method thereof are disclosed. A primary compressor and a secondary compressor can form independent cycles together with corresponding evaporators so as to reduce unnecessary power consumption. Also, a backflow prevention valve is installed between the primary and secondary compressors to prevent an increase in pressure of the secondary compressor, or an auxiliary heat exchanger is installed at the outlet side of a second evaporator with high temperature to allow heat exchange of an outlet side pipe of a first evaporator with low temperature so as to shift a load of a freezing chamber into a relatively large refrigerating chamber, thereby improving efficiency of the refrigerator. In addition, an oil separator or an oil collection pipe is installed at the outlet sides of the compressors or an oil balancing pipe and an oil balancing valve are installed between the compressors, so as to uniformly maintain an oil amount between the compressors.
    Type: Application
    Filed: July 26, 2011
    Publication date: February 2, 2012
    Inventors: Sunam CHAE, Juyeong Heo, Sung Jhee, Chanho Jeon
  • Publication number: 20110179817
    Abstract: A cold appliance comprising a cooling module (102) and a cabinet (101) comprising a cold compartment (104). The cooling module comprises an air outlet (43) delivering cooled air to the cold compartment and an air inlet (44) receiving air from the cold compartment. The cooling module is arranged at the bottom of the cold appliance, and comprises a cold section (34), and a warm section (35), which is separated from the cold section by an insulating wall (105). An evaporator (33) is arranged in the cold section, and a compressor (36) and a condenser (32) is arranged in the warm section. The condenser comprises a condenser tube (32), which is arranged in windings on or integrated in a bottom plate (31) of the cooling module.
    Type: Application
    Filed: May 19, 2009
    Publication date: July 28, 2011
    Applicant: AKTIEBOLAGET ELECTROLUX
    Inventors: Bernt Andersson, Klas Andersson
  • Publication number: 20110126571
    Abstract: A cold appliance, such as a household refrigerator or freezer, comprising a cabinet (101) and a cooling module (102) and a cabinet panel for a household cold appliance. The cabinet comprises cabinet panels including two opposite side wall panels (1), a rear wall panel (4), and a top part (2), which are connected essentially perpendicular to each other by means of mechanical and/or glue joints. Each cabinet panel comprises an inner sheet (9), an outer sheet (8) and an intermediary layer (17) of a foamed insulating material, wherein each cabinet panel has an inner surface, an outer surface, and four edge surfaces.
    Type: Application
    Filed: May 19, 2009
    Publication date: June 2, 2011
    Applicant: AKTIEBOLAGET ELECTROLUX
    Inventors: Anders Selin, Marko Tapio Jokila, Sven Blomberg, Bernt Andersson
  • Publication number: 20110061416
    Abstract: The present invention relates to a subassembly for a refrigerating and/or freezing apparatus, wherein the subassembly comprises at least one air inlet and at least one air outlet and wherein at least one air guidance device is provided in the subassembly, by means of which air can be guided into the subassembly from the air inlet to the air outlet. Moreover, the invention relates to an assembly for a refrigerating and/or freezing apparatus and a refrigerating and/or freezing apparatus.
    Type: Application
    Filed: September 2, 2010
    Publication date: March 17, 2011
    Applicant: Liebherr-Hausgerate Ochsenhausen GmbH
    Inventors: Anton Rothmund, Klaus Oelmaier, Viktor Laube
  • Publication number: 20100269531
    Abstract: Preventing the flow of the ambient air into the cabinet (2) by closing the discharge pipe (4) under normal conditions, balancing the cabinet (2) interior pressure by opening into the cabinet (2) from the side of the ambient air when the cabinet (2) interior pressure drops and discharging the water in the cabinet (2) especially after defrosting, outside of the cabinet (2) is accomplished by utilizing the valve (5) which is the object of the present invention.
    Type: Application
    Filed: December 24, 2005
    Publication date: October 28, 2010
    Inventors: Alphan Samdan, Gorkem Suner, Ahmet Dincer, Altan Alyanak
  • Publication number: 20100251752
    Abstract: The subject of the invention is a panel intended to form part of a wall delimiting a refrigerated chamber of a refrigerated box or to be positioned on such a wall, the panel including a photovoltaic module comprising at least one photovoltaic cell on the face of the panel facing towards the outside of the box, a layer of insulating material on the face of the panel facing towards the inside of the box, and air flow means interposed between the photovoltaic module and said insulating layer, and also a refrigerated box comprising such a panel on one of its walls and a vehicle comprising such a box.
    Type: Application
    Filed: April 1, 2010
    Publication date: October 7, 2010
    Applicant: PHOTOWATT INTERNATIONAL
    Inventors: VALERY AUROUSSEAU, PHILIPPE DUMAS
  • Publication number: 20090229297
    Abstract: A refrigerator includes a cabinet defining an open storage space. A door is disposed on the cabinet operable between an open position and a closed position. The door includes a forward wall and a rearward wall. An insulation layer is disposed between the forward wall and the rearward wall. An exterior skin is disposed adjacent to the forward wall and substantially covers the forward wall. A plenum is defined by the space between the exterior skin and the forward wall and is adapted to receive utility lines.
    Type: Application
    Filed: March 12, 2009
    Publication date: September 17, 2009
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Paul B. Allard, James W. Kendall, Steven J. Kuehl, Alan S. Lucas, Andrew M. Tenbarge, John J. Vonderhaar, Guolian Wu
  • Publication number: 20090199588
    Abstract: A refrigerator with a body and a door attached to the body wherein the body and the door delimit a thermally-insulated interior space, the refrigerator including a pressure-compensating valve for controlling an inflow of air from the outside of the refrigerator into the interior space and an outflow of air to the outside of the refrigerator out of the interior space to the outside of the refrigerator, wherein the pressure-compensating valve is disposed in thermal contact with a heat source and for heating the pressure-compensating valve to a temperature greater than the freezing point of water.
    Type: Application
    Filed: August 7, 2007
    Publication date: August 13, 2009
    Applicant: BSH Bosch und Siemens Hausgeräte GmbH
    Inventor: Karl-Friedrich Laible
  • Publication number: 20090193835
    Abstract: A system (10, 10?) for cooling items of freight on board an aircraft includes a refrigerating device and also a cooling station (14, 14?) to which cooling energy generated by the refrigerating device is supplied by means of a refrigerant medium. The cooling station (14, 14?) is capable of being connected to a freight compartment (24) of the aircraft or to a freight container (26?) on board the aircraft, in order to lead the cooling energy supplied to the cooling station (14, 14?) away into the freight compartment (24) or into the freight container (26?). A freight container (26?) for receiving items of freight designated for transportation on board an aircraft is capable of being connected to a cooling station (14?) of a system (10?) for cooling items of freight on board an aircraft, so that the cooling energy supplied to the cooling station (14?) is capable of being led away into the freight container (26?).
    Type: Application
    Filed: April 11, 2007
    Publication date: August 6, 2009
    Applicant: AIRBUS DEUTSCHLAND GMBH
    Inventors: Ozan Uluc, Kayihan Ahmet Kiryaman, Matthias Witschke
  • Publication number: 20090056369
    Abstract: An apparatus for chilling beverage containers such as bottles or cans includes a fluid tank containing chilling liquid cooled by a refrigeration unit and a membrane of collapsible thermoplastic polyurethane includes an internal chamber for supporting the container in the liquid, the membrane in the form of a shaped sleeve that surrounds the container to prevent the container coming into direct contact with the chilling liquid but which permits the liquid to transfer heat from the container to cool the contents of the container. A vacuum withdraws air from the internal chamber to draw the membrane into contact with the container and a drive arrangement rotates the sleeve and bottle. A refrigerated fluid supply system directs externally chilled fluid at the rotating membrane and recycles heated fluid for rechilling.
    Type: Application
    Filed: August 27, 2007
    Publication date: March 5, 2009
    Inventors: Harvey S. Fink, Lawrence J. Nolan, Jerry J. Jagodzinski
  • Patent number: 7155926
    Abstract: A refrigerator includes: a refrigerator body having a cooling chamber for storing food items and a mechanic chamber provided at one side thereof; a heat exchanger disposed in the mechanic chamber and performing heat exchanging while a refrigerant passes therethrough; a cross flow fan disposed facing the heat exchanger and blowing air for heat exchange; and a compressor mounted inside the mechanic chamber and compressing a refrigerant. A space for the mechanic chamber can be reduced, and thus, a cooling chamber for keeping food items can be enlarged.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: January 2, 2007
    Assignee: LG Electronics Inc.
    Inventors: Su-Nam Chae, Moo-Youl Kim, Joon-Hwan Oh, Tae-Hee Lee, Kyeong-Yun Kim, Jang-Seok Lee, Sung Jhee, Nam Soo Cho
  • Publication number: 20040011077
    Abstract: In a display cabinet (21) articles such as food placed on a shelf (20) can be kept cooler by having a heat pipe in the shelf with one end of the heat pipe (20a) cooled by the cabinet's cooling system (22).
    Type: Application
    Filed: April 9, 2003
    Publication date: January 22, 2004
    Inventor: Graeme Gregery Maidment
  • Patent number: 6568773
    Abstract: Refrigerator including a cold air duct fitted in a space stuffed with an insulating material between an inner case and an outer case of the refrigerator having a triangular section in a part facing the inner case for preventing deformation of the inner case in foaming of the insulating material, thereby preventing deformation of the inner case caused by late foaming.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: May 27, 2003
    Assignee: LG Electronics Inc.
    Inventor: Il Yoong Park
  • Patent number: 6543250
    Abstract: A refrigerator cabinet having a selected height and width used in a recreational vehicle, the improvement comprises an installation template permanently installed as a ventilation frame. The installation template produces manufacturer specified ventilation requirements for the ventilating refrigerating apparatus provided on the refrigerator and located on the refrigerator within the refrigerator cabinet. The installation template includes a top, bottom and side flanges, the dimensions of each of the flanges being selected according to the height, width and ventilation requirements of said refrigerator. Ambient air flow through the installation template may be used to produce the specified ventilation requirements for the refrigerating apparatus. In addition, an air movement device for providing air flow through the installation template for ventilation around the refrigerating apparatus may be used, such as a fan, reducing the amount of ventilation area required for the installation template.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: April 8, 2003
    Assignee: Dometic Corporation
    Inventors: Christopher J. Mills, Patrick N. McConnell, Christine Holland
  • Patent number: 6367280
    Abstract: In a structure in which a refrigerator including a compressor and a condenser each constituting a portion of a refrigerating unit and mounted to an outer surface of a rear wall of a refrigerator body is mounted to a stationary support wall in such a manner that the refrigerator body is accommodated in an accommodating recess provided in the support wall, an intake passage into which air can be drawn through a front end thereof, an exhaust passage from which the air can be discharged through a front end thereof, and a communication passage connecting rear ends of the intake passage and the exhaust passage to each other and having the compressor and the condenser accommodated therein, are defined between an inner surface of the accommodating recess and the refrigerator body. A fan for drawing air from the intake passage and discharging the air into the exhaust passage is mounted to the rear wall of the refrigerator body and accommodated in the communication passage.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: April 9, 2002
    Assignee: Sawafuji Electric Co., LTD
    Inventors: Hideo Funabasama, Daikichiro Motegi, Yoshiaki Fujisawa
  • Patent number: 6354103
    Abstract: The apparatus is a heat exchange unit for cooling interior rooms of commercial and/or residential structures. The unit includes a compressor and blower mounted within a base. A lid of the base has an elongated heat exchange tube mounted thereon. The heat exchange tube has an interior liner with a coil structure mounted to the outside surface thereof. An outer liner enclosed the interior liner and associated coil structure. Both the interior and exterior liners are composed of a perforated metallic material. The vertical heat exchange tube is enclosed with a baffle at the top portion thereof. The baffle functions to force air moving upward to travel in an outward and downward direction toward the base and outside of the liners through the perforations. In an alternative embodiment, the vertical heat exchange tube may include a intermediate tube mounted between the interior and exterior tubes. The intermediate tube also has coils wrapped about the perimeters.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: March 12, 2002
    Inventor: Fred Evans, Sr.
  • Patent number: 6116037
    Abstract: A very efficient direct current mobile air conditioning unit suitable for use with vehicles and capable of extended periods of operation while powered by a 12 volt battery is described. The direct current mobile air conditioning unit comprises at least one oil-less compressor and condenser coils and evaporator coils wrapped in metal gauze, where air is moved across the evaporator coil and condenser unit by highly efficient axial fans.
    Type: Grant
    Filed: January 21, 1999
    Date of Patent: September 12, 2000
    Assignee: Recreational Products, Inc.
    Inventor: Keith G. Burnett
  • 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: 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: 5402654
    Abstract: A modular refrigeration system for use in a cabinet with a front opening for receiving the unit and divided into a lower section and a refrigerated upper section. The refrigeration unit is positioned such that the lower section of the cabinet holds a condenser that is in communication with an evaporator positioned in the upper section for cooling the interior of the cabinet. The condenser includes a condenser fan that draws air from outside the cabinet and across a plurality of cooling coils of the condenser for cooling the refrigerant. Warm air currents are directed by the condenser fan into an exhaust channel that creates an independent flow of air across the condenser's compressor due to an aspiration effect within the exhaust channel. Additionally, the refrigeration unit may be easily removed from or inserted into the cabinet without affecting other modular units in the cabinet.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: April 4, 1995
    Assignee: The Coca-Cola Company
    Inventors: Arthur G. Rudick, Shaun B. Gatipon, Howard W. Wachenheim
  • Patent number: 5284025
    Abstract: An air conditioning system includes: a compressor, an outside air heat exchanger, an outside air heat exchanger fan, an expansion valve, an interior heat exchanger, an interior heat exchanger fan, and a four-way switching valve further comprises an outside air induction/venting device provided outside the outside air heat exchanger. A device for switching or opening/closing the air intakes and/or outlet of the outside air heat exchanger are provided in the outside air induction/venting device and are operated to enable the efficient use of waste heat from the drive shaft motor or inside the passenger compartment, and to provide a defrost cycle in the heat pump heating mode.
    Type: Grant
    Filed: June 17, 1992
    Date of Patent: February 8, 1994
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Minoru Kajitani, Norio Yoshida
  • Patent number: 5228311
    Abstract: For enhanced cooling power in a beverage vending machine the compressor is arranged in a recess of the apparatus housing, and the condenser in the form of a coil-shaped tube, is arranged in a convection shaft connected to the recess. One wall of the shaft is formed by the rear wall of the housing. Inside the shaft the tube coil of the condenser is disposed diagonally upwards in the direction of the rear wall of the apparatus housing.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: July 20, 1993
    Assignees: The Coca-Cola Company, Bosch-Siemens Hausgerate GmbH
    Inventors: Klaus Erdmann, Helmut Konopa, Bringfried Peglow
  • Patent number: 4543798
    Abstract: An improved tool carrier with refrigeration compartment for mounting across the bed of a pickup truck. The carrier (10) includes an enclosure (16) comprising forward and rearward side walls (18 and 20, respectively), and opposite end walls (20 and 24), and a bottom portion (26). The enclosure (12) is divided into a refrigeration housing (28) and a tool compartment (30) with a partition (32). Further, means are provided for releasably mounting the carrier (10) across the bed of a pickup truck (14). The carrier (10) further comprises a refrigeration unit (70) slidably received within the refrigerator housing (28), the refrigeration unit (70) defining a refrigeration compartment (71) for carrying items to be refrigerated. A door assembly is also provided for selectively accessing either the refrigerator housing (28) or the tool compartment (30).
    Type: Grant
    Filed: April 13, 1984
    Date of Patent: October 1, 1985
    Inventor: Daniel A. Page
  • Patent number: 4509339
    Abstract: An automatic selling machine is equipped with a cooling system whose evaporator and evaporator fan are dispensed in the goods compartment on an insulating intermediate bottom of the machine housing, and whose condenser, condenser fan, and compressor are accommodated below the intermediate bottom. The cooling system is an assembly to be exchanged as a unit. For this purpose, the intermediate bottom is provided with an opening having peripheral shoulders on which an insulating supporting plate closing the opening rests. The evaporator is mounted above the plate, while the condenser, the compressor, and the condenser fan are mounted at the underside of the plate.
    Type: Grant
    Filed: October 11, 1983
    Date of Patent: April 9, 1985
    Assignee: Sielaff GmbH & Co. Automatenbau Herrieden
    Inventors: Bernd Mehlan, Josef Gress
  • Patent number: 3965698
    Abstract: A refrigerated chamber or building having an upper crawl space above the ceiling wherein the crawlspace is maintained under a negative pressure in order to provide an outflow of refrigerated air through the insulation into the crawlspace. This serves to prevent the inflow of warm air into the upper portions of the refrigeration chamber, which normally would have a negative pressure, with accompanying harmful moisture precipitation in the insulation.
    Type: Grant
    Filed: April 1, 1975
    Date of Patent: June 29, 1976
    Assignee: Quad Corporation
    Inventor: Egbert deVries