Abstract: A method for sealing an economizer perimeter gap to reduce an uncontrolled excess outdoor airflow by applying a sealing material over or into the economizer perimeter gap between the economizer frame and a Heating, Ventilating, Air Conditioning (HVAC) system cabinet comprising: locating the economizer perimeter gap between the economizer frame and the HVAC system cabinet and applying a sealing material over or into the economizer perimeter gap. The sealing material is selected from the group consisting of: an adhesive tape sealant, an adhesive sealant, a mastic sealant, a caulking material, and a weatherstripping. The method comprises: disconnecting an electrical power to the HVAC system, removing an economizer hood, locating and cleaning the metal services on both sides of the gap between the economizer frame and the HVAC cabinet, applying the sealing material over or into the gap, reinstalling the economizer hood, and reconnecting the electrical power to the HVAC system.

Abstract: An indoor air quality (IAQ) control module may be provided for sensing and controlling the indoor environmental quality (IEQ) of a zone in a building. The IAQ control module may receive a supply air sample from a supply vent and a return air sample from a return vent, where the air samples are taken using the pressure created by a blower within the HVAC system. The IAQ control module may then compute a differential value for each of the sensed one or more air parameters and generate a control signal or command based on at least the differential value(s). The IAQ control module may then communicate the control signal to an airflow control device to control the airflow to and/or from the zone.

Abstract: A heat pump has an evaporator for evaporating water as a working liquid so as to produce a working vapor, the evaporation taking place at an evaporation pressure of less than 20 hPa. The working vapor is compressed to a working pressure of at least 25 hPa by a dynamic-type compressor so as to then be liquefied within a liquefier by direct contact with liquefier water. The heat pump is preferably an open system, wherein water present in the environment in the form of ground water, sea water, river water, lake water or brine is evaporated, and wherein water which has been liquefied again is fed to the evaporator, to the soil or to a water treatment plant.

Abstract: A refrigeration device comprising at least two storage compartments that are thermally insulated from one another and from the environment. In said device, an evaporator that can be cooled independently of an evaporator of the other storage compartment or compartments, is allocated to each storage compartment. Said device is equipped with elements for switching at least one of the compartments from a freezing mode to a non-freezing mode.

Abstract: A device and method are disclosed for producing heated and/or cooled compressed air. The device may include a conventional air compressor, one or more filter stages to dry and purify the compressed air, a heat exchanger assembly including a heat exchanger enclosure with a heat exchange coil surrounded by ice or hot water for cooling or heating the compressed air, and an air distribution manifold to supply the temperature-controlled and filtered air to users. In a preferred embodiment, ice is used to cool the compressed air, and the cooled compressed air is supplied to protective gear worn by athletes to cool the athletes during rest periods.

Abstract: A collapsible foldable cooler can be converted to a stadium seat by folding back a top lid and folding diagonally down the top portions of the sidewalls. The folded down top lid extends along the back wall, forming a part of a converted stadium seat backrest, while the sidewalls form the sides of the stadium seat.

Abstract: A portable draft bar has an insulated chamber with an open top, an insulated cover for the open top, and a horizontal shoulder on the inside wall near the top. A rigid panel fits on the shoulder. At least one beverage tap mounted on the panel extends above the open top, with a drip tray below the tap outlet. A cooling coil within the chamber connects the tap inlet to a pressurized beverage container, with chamber ice cooling the coil. When not in use, the panel may be inverted and returned to the shoulder. With the cover in place and the container disconnected, the device is secure and transportable.

Abstract: A refrigerator unit beverage tapper conversion kit includes a door cover. The door cover includes a nylon sheet sewn into the shape of a generally concave cap. The regular door is replaced with the door cover. At least one insulating layer is attached to an inside surface of the cap. An inside perimeter of the door cover is sized to be slipped over an outside perimeter of an open end of the refrigerator unit. An elastic loop is retained on an open perimeter of the door cover for sealing an open end of the refrigerator unit. The refrigerator unit beverage tapper conversion kit may also include a carbon dioxide bottle, a gas regulator, a sankey, a faucet support, a faucet, a faucet shank, a carbon dioxide tube and a beverage tube. The faucet is disposed on the refrigerator door cover for dispensing a beverage in a half barrel.

Abstract: A method for cooling a cryostat configuration (1, 1?) during transport, wherein the cryostat configuration (1) comprises a superconducting magnet coil (2) in a helium tank (8) containing liquid helium (9), which is surrounded by at least one radiation shield (10), wherein the cooling inside the cryostat configuration (1, 1?) in stationary operation is performed entirely without liquid nitrogen by means of a refrigerator, characterized in that during transport, the refrigerator is switched off and instead, liquid nitrogen (6) is conducted from an external nitrogen vessel (4) via a supply tube (7) from the nitrogen vessel (4) to the cryostat configuration (1, 1?) and brought into thermal contact with the radiation shield (10) by means of a thermal contact element (11) in the cryostat configuration (1, 1?). In this way, the consumption of liquid helium during transport can be greatly reduced and the possible transport time of a charged superconducting magnet configuration increased.

Abstract: A compartment for augmenting available space refrigerated by a chest refrigerator comprises a body configured to be coupled to a chest portion of the chest refrigerator. The body is configured to provide a hermetical seal between the body and the chest portion in use. The body has a cavity therein for receiving items to be refrigerated. The body is arranged such that when coupled to the chest portion the cavity is refrigerated by the chest portion. The body also has an opening for providing access to items in the cavity. The body is arranged to be coupled to a door for covering the opening in a hermetically sealed manner. An augmented chest refrigerator uses the compartment.

Abstract: A refrigerator freezer having an upper refrigerator compartment and a lower below freezing freezer compartment. The upper compartment can be a convertible compartment selectively operable by the user as an above freezing refrigerator compartment or as a below freezing freezer compartment. The evaporator for supplying refrigerated air is located in the upper compartment along with an auxiliary heater and upper compartment thermostat to control the temperature in the upper compartment. A control discharges an amount of refrigerated air to the upper compartment for refrigerator operation and a larger amount of refrigerated air for freezer operation. The control also energizes the auxiliary heater under control of the upper compartment thermostat during refrigerator operation to assure above freezing temperatures in the upper compartment. A low ambient heater can be provided for the upper compartment for use of the refrigerator freezer in low ambient temperature conditions such as an unheated garage.

Abstract: A compartment for augmenting available space refrigerated by a chest refrigerator comprises a body configured to be coupled to a chest portion of the chest refrigerator. The body is configured to provide a hermetical seal between the body and the chest portion in use. The body has a cavity therein for receiving items to be refrigerated. The body is arranged such that when coupled to the chest portion the cavity is refrigerated by the chest portion. The body also has an opening for providing access to items in the cavity. The body is arranged to be coupled to a door for covering the opening in a hermetically sealed manner. An augmented chest refrigerator uses the compartment.

Abstract: The present invention is directed toward a method, apparatus and system for cooling goods, such as, for example, agricultural products, in a substantially sealed chamber. A method of the invention includes placing goods on a surface; forming a chamber over the goods on the surface; positioning a cooling apparatus having a first portion and a second portion proximate to the goods; enclosing the first portion of the cooling apparatus in the chamber; substantially sealing the chamber; and cooling the goods. A cooling system of the invention comprises a first support having a carrier; an evaporation coil mounted to the first support; a second support having a carrier; a compressor mounted to the second support, the compressor coupled to the evaporation coil; and a substantially sealed enclosure positioned over the evaporation coil and such that the compressor is positioned without the chamber.

Abstract: An adjustable angle display device for holding and displaying objects includes a base portion, a display portion coupled to the base portion and adapted to pivot about a pivot point, and a positioning device having a first end coupled to the base portion and a second end coupled to the display portion, the positioning device adapted to adjustably position the display portion in a first position and a second position relative to the base. A method of providing an adjustable angle display device includes pivotally coupling a first end of a display portion to a base portion, providing a positioning device to selectively raise and lower a second end of the display device relative to the base portion, coupling the positioning device in operable engagement with the base portion and the display portion, and operating the positioning device to selectively adjust a display angle of the display device.

Abstract: A portable cooling trailer for cooling produce at the harvest site, where the produce may be cooled by either forced air refrigeration, where cooled air is drawn through the produce and recycled through a heat exchanger, or hydro cooling, where chilled water is sprayed onto the produce, recaptured and recycled through the heat exchanger.

Abstract: An air conditioning system has an air handling unit within a housing. The air handling unit is adapted for connection to the supply and return air ducts of a building and for mounting at the roof of the building. A separate and distinct condensing unit can be mounted above, adjacent to, or removed from the air handling unit such that the air handling unit can be installed in relatively small roof spaces, while the condensing unit can be installed in locations where sufficient space exists. Fluid connection structure extends between the condensing unit and the air handling unit. The system is easily serviceable, and pullout sections within this system improve maintenance procedures. The invention has utility as an original installation unit, and has further utility as a replacement unit for small dimension air conditioning unit or units in small roof spaces.

Abstract: The present invention involves package air conditioner and heat pump units. The unit has a housing containing a compressor, an outdoor section with blower and heat exchanger, and an indoor section with blower and heat exchanger. The indoor section has two interchangeable removable panels, one removable panel defining a supply port and a second removable panel defining a return port. The return and supply ports of the housing are reversible because of the unique blower assembly which has a blower attached to the second panel. The blower assembly is adapted to be disposed in at least two positions in said housing. With this arrangement, the return port and the supply port are reversible by switching the position of the first panel and the blower assembly.

Abstract: A single package heat pump unit is field-reconfigurable from a horizontal discharge configuration to a top discharge configuration. A supply panel covers the top and upper part of the back wall, and contains a supply vent in a vent wall, with a blank wall joining it at a ninety degree crease. The supply panel can be removed and installed in the top discharge position, using standard fasteners.

Abstract: A temperature controller for facilitating the storage of wine and like perishables in a household refrigeration unit includes a temperature sensing device, adapted to be positioned in a chilled compartment of the refrigeration unit, and a temperature controller circuit, operatively connected to the temperature sensing device, for overriding an internal thermostat of the refrigeration unit. The temperature controller circuit maintains the refrigeration unit's chilled compartment at a desired user selected wine storage temperature by periodically enabling and disabling the supply of electrical power from an external power supply to the refrigeration unit's chiller (e.g., compressor). The temperature controller circuit is maintained in a housing adapted to be positioned on or adjacent the refrigeration unit. The housing may also include a display for visually indicating the temperature of the chilled compartment.

Abstract: A container converting between a briefcase, a food and beverage carriage, and a mini-cooler. The container has a case which functions as a briefcase. The case includes a base and a top, each of which has walls defining a hollow center filled with insulating material. The top is secured by a hinge to the base along coextensive edges. A plurality of separate food and beverage carriage inserts may be removably positioned in the base to convert the case into a food and beverage carriage. An insulating mini-cooler adapter converts the case into a mini-cooler.

Abstract: A rotatable control for a broad range, temperature controlling thermostat for a refrigeration compartment of a refrigeration unit enables operation of the refrigeration unit in one of several different operational modes. For example, the refrigeration unit may be operated as a wine cooler or as a standard refrigerator or as a freezer. The control includes a control dial having four, integrally formed, spaced apart stops formed on an inner surface. A stop formed on a cover of the thermostat may be placed between a pair of adjacent stops formed on the control dial to prevent adjustment of the set-point temperature of the refrigeration compartment outside of the particular temperature range associated with the preselected operational mode of the refigeration unit.

Abstract: A damper interlock mechanism comprising a housing including first and second apertures, a damper assembly pivotably mounted in the first aperture and a swing out unit pivotably mounted in the second aperture for pivotal movement between a first shipping position and a second operational position. The mechanism also includes an actuator for actuating the damper, and a damper control rod having a first end operationally connected to the actuator, a second end operationally connected to the damper assembly, and an intermediate portion. The intermediate portion includes means for interlocking the damper control rod with the swing out unit when the swing out unit is in the shipping position.

Abstract: An expandable refrigeration system for use in dispensing products to the public, the system including a base unit with a product containing chamber, a refrigeration system in the base unit and having a compressor and condenser portion and a fan for moving ambient air past the condenser, an evaporator cabinet supported adjacent the refrigeration system having an evaporator therein which is connected to the compressor and condenser of the refrigeration system and a fan for moving air past the evaporator whereby the air is coated, openings through which cooled air from the evaporator is conducted into the base unit product containing chamber, a slave unit having a product containing chamber contiguous with the base unit, first and second ducts communicating the interior of the base unit product containing chamber with the slave unit product containing chamber so that cooled air circulated in the base unit is also circulated in the slave unit allowing the addition of increased product containing space without an

Abstract: A refrigeration appliance includes a plurality of side panels and a base panel, one of the side panels containing within the inner and outer walls thereof a complete mechanical refrigeration unit. The side panels and the base panel are provided with integral interlocking means in the edges thereof so that the panels may be manufactured at one location and shipped in knockdown form to another location where the side panels may be readily assembled on the base panel by unskilled personnel without the use of tools or separate fastening means by simple engagement of the interlocking means in the panel edges. A lid or closure panel may then be secured to one of the side panels to provide a completely enclosed refrigerated compartment.

Abstract: An economizer for an air handler, air conditioner or similar unit. The economizer has a first position and a second position. In the first position, the economizer is retracted and presents a relatively flat end surface of the air handler, and in a second position the economizer projects from the air handler and provides for the intake of ambient air into the air handler. The invention provides for the shipment of the economizer intact with the air handler so that installation of the unit is conveniently achieved.

Abstract: A compressor driven by a three phase electric motor is contained within a housing that is filled with refrigerant and is hermetically sealed with a terminal board. The terminal board has three electrical feedthrough terminals for coupling three of the motor's six winding leads to a three phase power source. An insulator having a fourth terminal is disposed inside the housing and is attached to one of the feedthrough terminals. In a high voltage application, such as 4160 volts, the fourth terminal provides a convenient location to attach the motor's three remaining leads to a common point. In a low voltage hookup, such as 2400 volts, the fourth terminal is disregarded, and the three remaining leads are separated and paired up with the three leads that are connected to the feedthrough terminals.

Abstract: An outdoor enclosure for air handling equipment is adaptable to accept add-on air handling equipment by virtue of a two-position cover panel. The cover panel has a generally rectangular shape and is attached to a side panel of the enclosure. The cover panel is selectively mountable in either a vertical position to cover a fresh air opening through the side panel or in an open position to uncover the opening. The cover is opened by pivoting it about its upper horizontal edge which is located just above the opening and swinging its lower edge outwardly away from the side panel. An add-on mist elimination filter is installed in a generally horizontal position betweeen the cover panel's lower edge and the lower edge of the side panel's opening. In the open position, the cover panel serves as a rain sheltering hood over the filter while the opening allows fresh outside air to be drawn into the suction side of a fan located inside the enclosure.

Abstract: An air-conditioning unit which can be converted from a horizontal air flow configuration to a vertical air flow configuration (or vice-versa) at the installation site without any additional parts or special tools. A reversible drain pan and return (intake) air panel forms part of the air-conditioning unit adjacent to a slant-mounted cooling coil, and may be demounted, reoriented and remounted so as to move the return (intake) air panel from one end of the unit to one side of the unit (or vice-versa). The air-conditioning unit is then tilted 90.degree. so as to position the drain pan under the cooling coil.

Abstract: A refrigerator includes a mode-change chamber, having first and second dampers which may be selectively used as a freezer compartment, refrigeration compartment or chill compartment. When the freezer compartment mode is selected, the first damper permits the flow of cold air into the mode-change chamber to maintain the temperature in the mode-change chamber at a freezing temperature. When the refrigerating compartment mode is selected, the second damper permits the flow of cold air into the mode-change chamber to maintain the temperature in the mode-change chamber at the selected refrigeration temperature. When the chill compartment mode is selected, the control temperature of the second damper is forcibly expanded by a heater to maintain the temperature in the mode-change chamber at a chill temperature between the freezing and refrigeration temperatures.

Abstract: An interchangeable suction line filter-drier and accumulator comprising a vessel having an inlet and an outlet, a removable filter-drier element, and a removable non-porous evaporator conduit which interchangeably functions as a filter-drier when the filter-drier is installed or as a suction accumulator when the non-porous evaporator is installed.

Abstract: A refrigeration compressor and condenser unit is in the form of a rectangular box having opposed, vertical sidewalls and a condenser at one vertical end wall. A fan panel assembly, including a grille, venturi member, fan, and fan motor, is selectively mounted either at the one vertical end position opposite the condenser or on top of the sidewalls parallel to the base. An imperforate closure panel closes off the remaining wall. The fan panel assembly and closure member are interchangeable between the two positions and are fastened to the other walls and to each other by removable fasteners.

Abstract: An indoor unit for an electric heat pump is provided in modular form including a refrigeration module 10, an air mover module 12, and a resistance heat package module 14, the refrigeration module including all of the indoor refrigerant circuit components including the compressor 36 in a space adjacent the heat exchanger 28, the modules being adapted to be connected to air flow communication in several different ways as shown in FIGS. 4-7 to accommodate placement of the unit in various orientations.

Abstract: A heat exchange unit is disclosed having a combination coupling retainer and support. This combination coupling retainer and support acts to both secure a suction line coupling and a liquid line coupling connected to the appropriate headers of the heat exchanger and to provide structural support for the heat exchange unit. The coupling retainer and support includes a suction line opening for securing the suction line coupling therein and a liquid line slot in an arcuate configuration adapted to secure the liquid line coupling. This combination retainer and support is capable of being used in various units with heat exchangers mounted at differing angles, the suction line coupling serving as a pivot point and the liquid line coupling being positioned within the liquid line slot to secure the various components.

Abstract: A single housing contains heating and air cooling units but in separate chambers and a single blower is selectively movable to force air into and through the respective chambers as desired for cooling or heating and outlets from the separate chambers to a common plenum are closed off depending upon which of the chambers is being fed by the blower.

Abstract: A freezing unit is described having plural compartments on upper and lower levels for accommodating air moving means, refrigeration coils and conveyors for receiving and maintaining the articles to be frozen in the unit. The refrigeration coils are disposed in a compartment on the lower level with compartments on either side. The air moving means is disposed over one of the side compartments and the conveyors can be disposed either over the other side compartment, adjacent to it or within it. This arrangement of components permits ease of access and allows plural conveyors to be deployed and used together or alternatively in their respective compartments. Partitions with variable closures are also provided for directing the flow of refrigerated air to the desired compartments.

Abstract: A coil and cabinet assembly for an air handler is provided in which the refrigerant coil is disposed diagonally within a coil section of the cabinet, the coil having a drain trough for collecting condensate when the air handler is in its upright vertical disposition, a second condensate drain trough adapted for installation in the cabinet at the opposite edge of the coil when the cabinet is to be installed in an inverted upright disposition, both drain troughs having drain outlets projecting from the front face ends of the troughs and extending at their respective locations through lower and upper detachable cross members extending between the opposite sides of the cabinet.

Abstract: The air conditioning unit of the invention has a construction of the indoor air flow section which adapts it to receive and return indoor air either through its bottom area in a vertical air flow mode, or through its end wall in a horizontal air flow mode so that the unit may be either roof top mounted or slab mounted without the need of any added section or module furnished by the manufacturer. The indoor air flow section includes a draw-through refrigerant coil located in an upper quadrant of the section, a detachable panel separating two lower quadrants in the section for the vertical air flow mode and movable to separate a lower and upper quadrant for the horizontal air flow mode, and removable end wall panel means covering the end in the vertical air flow mode and being positioned to cover the bottom for the horizontal air flow mode.

Abstract: An air-conditioning unit with a blower section and an adjacent refrigerant evaporator coil section is adapted to be disposed for airflow through the unit in an upflow, counterflow, or horizontal flow direction by arranging the evaporator coil, and a drip pan separable from both the coil and the coil section, with the drip pan located in any of the four interior corners which extend from front to rear of the unit. The coil has a frame assembly with members at the ends of the fins of the evaporator coil provided with openings for passing condensate into the drain pan, the arrangement being such that either end of the coil may be received within the drain pan. The arrangement also includes the provision of means for supporting the coil from the drain pan in a pivotal engagement to accommodate the difference in angle at which the coil projects from the drain pan in accordance with whether the positioning of the unit is vertical or horizontal.

Abstract: The air conditioning unit has a refrigerant evaporator diagonally disposed within the air conditioning cabinet and includes a condensate drain trough at the opposite edges of the evaporator adjacent the front and rear wall of the cabinet, a drain pan assembly extending along the rear wall of the cabinet, and a detachable drip tray which is located in one position on the upstream face side of the evaporator when the cabinet is in a vertical disposition and is located on the upstream face of the evaporator in another position to feed condensate to the other drain trough when the cabinet is in one of its horizontal dispositions, the relationship between the two drain troughs, drain pan and drip tray accommodating the installation of the cabinet in a vertical disposition, and alternatively in a horizontal disposition with either the front or the rear face of the cabinet on top.

Abstract: Air conditioning apparatus which includes an air blower-heater module useful independently and also in a unit having cooling coils providing means for heating, cooling, and filtering air in air conditioning systems for enclosures. The module has a squirrel cage type centrifugal blower in a housing having scroll shaped baffling with an electric heater at the outlet. The baffling is shaped to minimize turbulence; the heater is mounted within a heat shield spaced within the baffling to reduce housing temperatures; and the blower motor is mounted exterior of the blower chamber for maximum air input. A preferred application of the module is in a cube shaped fancoil unit having a square cooling coil assembly which may be installed at various orientations to provide for bottom drainage with a variety of directions of air intake and discharge. In the cube unit using the module, the air intake and discharge paths are perpendicular to each other.

Abstract: It is an object of the present invention to reduce the constraint that the density ratio is constant as small as possible, and to obtain high power recovering effect in a wide operation range. A refrigeration cycle apparatus uses carbon dioxide as refrigerant and has a compressor, an outdoor heat exchanger evaporator, an expander and an indoor heat exchanger a radiator. An injection circuit for introducing high pressure refrigerant is provided in a halfway of an expansion process of said expander.