Abstract: A dehumidification system for a marine vessel includes a dehumidifier having a supply and return. The dehumidifier is supported in an interior space of the marine vessel, separated from the outside ambient environment. The supply provides dehumidifier to air through dedicated ducting to one or more locations throughout the vessel. The return includes dedicated ducting that draws air from a return grate located away from any doors on the vessel that are open directly to the outside ambient air. For example, the return grill is positioned in a space below deck. The dehumidification system includes a controller that is positioned near the return grate.

Abstract: A dehumidifier including an evaporator, a condenser, and a fan arranged in a main body. The fan includes a first blowing part to blow air having passed through both the evaporator and the condenser, and a second blowing part to selectively blow any one of air having passed through both the condenser and the evaporator and air having passed through only the evaporator. The dehumidifier may additionally function to supply cold air.

Abstract: A centrifugal blower provided with a spiral shaped scroll chamber where a bottom part of the scroll chamber gradually expands downward in the axial direction of the fan well along with expansion of the spiral and where a flow area gradually expands toward an air outlet from a spiral start part of the casing, the centrifugal blower having an initial slant angle ?0 at the spiral start part of the bottom part of the scroll chamber of a range of angle of 5.2° to 27.5° or setting a backflow prevention rib at the fan outlet.

Abstract: Embodiments of a modular condenser unit are provided. The modular condenser unit may include a housing and a first condenser coil and a second condenser coil disposed within a volume of the housing. A fan may also be disposed in an end of the housing and adapted to draw air through at least one of the first condenser coil and the second condenser coil. In some embodiments, the first condenser coil and/or the second condenser coil may be micro-channel condenser coils.

Abstract: Disclosed is a refrigerator including a storage compartment, a door for opening/closing a front surface of the storage compartment, and a cold storage unit provided in a storage space defined in the storage compartment. The cold storage unit is rotatably installed at one sidewall defining the storage space to serve as a shelf, so that convenience of use and space utility are improved.

Abstract: A method is provided for operating a refrigerant vapor compression system, for example an air-cooled chiller or air-cooled condensing unit, at optimal energy efficiency rating. The method includes the steps of: determining the instantaneous values of a plurality of selected operating parameters of the system's refrigeration unit, calculating a desired control parameter set point indicative of an optimal energy efficiency rating for the refrigeration unit as a function of the selected operating parameters, sensing the instantaneous value of the control parameter, comparing the sensed instantaneous value of the control parameter to the calculated control parameter set point, and adjusting the operating speed of the condenser fans associated with the air-cooled condenser of the refrigeration unit in response to that comparison.

Abstract: An air conditioner includes a case provided with openings, a heat exchanger disposed in the case, one or more fans disposed in the case, and a variation unit that is movably disposed around the fans to vary air inlet and outlet directions.

Abstract: A transport refrigeration system having a structural framework supporting a refrigeration unit including a condenser heat exchanger supported in an upper region of the framework and an engine and an electric generator powered by the engine supported by the framework in an engine compartment in a lower region of the framework, includes a pair of vertically disposed condenser fan/motor assemblies disposed aft of the condenser heat exchanger in side-by-side relationship and above the engine compartment; and a flow partition extending vertically between the pair of condenser fan/motor assemblies.

Abstract: A centrifugal fan, which equally maintains air-blowing capacities of both inlets regardless of different suction resistances of both inlets due to a driving device, and an air conditioner having the centrifugal fan. The centrifugal fan includes a rotary plate; first blades disposed at the edge of one surface of the rotary plate; and second blades disposed at the edge of the other surface of the rotary plate, and having a larger outer diameter than the outer diameter of the first blades. Thus, although a large flow resistance is generated at one inlet of the centrifugal fan due to the driving device, air-blowing capacities of both inlets are maintained equally.

Abstract: A room air conditioner has a front side portion and a rear side portion for location at an area to receive unwanted heat. The room air conditioner includes an evaporator coil at the front side portion of the air conditioner, and having a left-right centerline extending parallel to a front to rear direction. A condenser coil is at the rear side portion of the air conditioner, and has a left-right centerline extending parallel to the front to rear direction. An air-moving device is located between the evaporator coil and the condenser coil, and has a left-right centerline extending parallel to the front to rear direction. A chassis supports the evaporator coil, the condenser coil, and the air-moving device, and has a left-right centerline extending parallel to the front to rear direction.

Abstract: A compact rooftop air conditioning unit for a vehicle, such as a bus, having an evaporator coil located in front of a condenser coil. A plurality of cylindrical blowers are mounted adjacent the evaporator coil and arranged to provide conditioned supply air to the interior of the vehicle. A single electric motor is connected to an elongated drive shaft which drives the blowers. A condensate pump is included for pumping condensate generated by the evaporator coil back over the condenser coil. An electrically driven compressor is housed within the unit and is arranged so that no refrigerant lines pass outside of the unit. An inverter is also housed within the unit and provides a regulated input to the compressor and the blower drive motor.

Abstract: A room air-conditioner (10) for installation into a pre-constructed aperture through a building wall (34) has a depth substantially equivalent to the wall thickness and is adapted to stand at floor level within said aperture with front and rear covers (11, 12) flush with internal and external surfaces of the wall, respectively. The necessary compact design is achieved by stacking the components vertically within the air-conditioner whereby the condenser coil (16) is at the bottom and air for the condenser is drawn in and extracted from the rear whereas the evaporator coil (22) is towards the top and air for the evaporator is drawn in and extracted from the front. Fans (19, 24) for each coil are arranged coaxially and driven by a single motor (21). The coils have a C-shaped configuration. Condensate is collected from the evaporator coil in containers (29, 31) and is used to cool refrigerant pipes (30, 32) entering and leaving the condenser coil.

Abstract: A one-unit type air conditioner is provided. The one-unit type air conditioner includes a cabinet defining the appearance of the air conditioner, a partition wall dividing the interior of the cabinet into indoor and outdoor sections, and a fan casing and an evaporator support frame installed in the cabinet in the indoor section of the partition wall. The partition wall includes a plate part transversely arranged in the interior of the cabinet to partition the interior into the indoor and outdoor sections, and a frame support part formed by cutting a part of the plate part to form a piece having a predetermined size and bending the piece toward the indoor section. The frame support part is spaced at a base thereof apart from the edge of the plate part by a predetermined distance and includes a margin disposed between the base of the frame support part and the edge of the plate part. The margin is bent toward the outdoor section to form a reinforcing flange for increasing the strength of the frame support part.

Abstract: A transport refrigeration unit is utilized to cool a transport refrigerated container. Air cooled by an inclined evaporator is drawn through the evaporator by an evaporator transverse fan and discharged in the refrigerated container. Air drawn through a condenser by a condenser transverse fan approximately 1.2 to 1.5 times the size of the evaporator transverse fan is discharged outside the refrigeration unit. The axes of the pair of heat exchanger fans are substantially parallel to an axis of a motor shaft which drives the fans. A continuous belt passes over pulleys of the fans and motor shaft to drive the fans as the motor operates. A corrugated partition between the evaporator and the condenser insulates the walls of the refrigerated container and the frame of the refrigerated unit.

Abstract: A room air-conditioner (10) for installation into a pre-constructed aperture through a building wall (34) has a depth substantially equivalent to the wall thickness and is adapted to stand at floor level within said aperture with front and rear covers (11,12) flush with internal and external surfaces of the wall, respectively. The necessary compact design is achieved by stacking the components vertically within the air-conditioner whereby the condenser coil (16) is at the bottom and air for the condenser is drawn in and extracted from the rear whereas the evaporator coil (22) is towards the top and air for the evaporator is drawn in and extracted from the front. Fans (19,24) for each coil are arranged coaxially and driven by a single motor (21). The coils have a C-shaped configuration. Condensate is collected from the evaporator coil in containers (29,31) and is used to cool refrigerant pipes (30,32) entering and leaving the condenser coil.

Abstract: Apparatus for cooling a condenser of a room air conditioner. The apparatus has a first fan coupled to a driving shaft of a driving motor, a second fan which has a circular band and is coupled to an edge portion of the driving shaft for accelerating air blown by the first fan, a skirt member for guiding the air accelerated by the second fan toward a center portion of the condenser, a mounting flange assembled to the condenser, and fixing members for fixing the skirt member to the mounting flange. The circular band surrounding the first fan converges toward the condenser and the skirt member is flared toward the condenser so that air passing through the second fan is accelerated toward the center portion of the condenser and experiences a minimum pressure drop. Air flowing along an outer wall of the skirt member cools a circumferential portion of the condenser. The apparatus uniformly cools the condenser, thereby improving an air conditioning efficiency of the room air conditioner.

Abstract: An air conditioning system for a vehicle includes an evaporator disposed at a slant at an exhaust side of at least one blow fan and blow motor, and at least one blow case disposed around the at least one blow fan for controlling a blown quantity of air so as to homogenize the air flow, thereby saving expense, and reducing the weight of the air conditioning system.

Abstract: A module for controlling the temperature within an enclosed structure is provided. The module comprises a thermoelectric assembly, a platform, and a panel. The thermoelectric assembly comprises a thermoelectric device with a first heat sink disposed on one side of the device and a second heat sink disposed on the other side of the device. The thermoelectric assembly further comprises an electric motor attached to one of the heat sinks with a rotating shaft extending longitudinally through the electrical motor and both heat sinks. A propeller may be attached to each end of the rotating shaft adjacent to the first heat sink and the second heat sink respectively. The platform may be removably engaged with the enclosed structure. A first fastener may be used to attach the thermoelectric assembly to the platform. A first opening may be provided in the platform adjacent to one of the propellers.

Abstract: In a refrigerating apparatus for use in transportation, condenser fans for feeding external air to a condenser and evaporator fans for feeding air in a freezer compartment to an evaporator are mounted on a common shaft driven by an engine. The condenser fans and evaporator fans have propellers of the same size. The common drive shaft is disposed parallel to a drive shaft of the engine.

Abstract: The present invention involves an air conditioner including an air handling housing having a sidewall and defining first and second compartments. First and second tangential blowers are disposed in the first and second compartments, respectively. Each of the tangential blowers defines an axis with a coaxially disposed shaft end mounted in the sidewall. A motor drives the first and second tangential blowers. A belt and two pulleys rotatably connect the first and second tangential blowers. The belt engages the pulleys, and each pulley is mounted on a respective one of the shaft ends by a tolerance ring. A bearing assembly for rotatably supporting the shaft ends includes a support plate spaced from the sidewall. The bearing assembly further includes an outer race and an inner race. The outer race is connected to the support plate and the inner race is connected to the shaft end.

Abstract: A refrigerator includes a freezer space, a cold space, a refrigerating system for producing cold air, and a first fan for circulating the cold air through the freezer space and cold space. The refrigerating system includes a condenser and a compressor. The compressor extends within a vertical air conduit at the back of the refrigerator and includes a loop-shaped upper end disposed at an upper air inlet of the conduit. The compressor is disposed adjacent an air outlet of the conduit situated at the lower rear end of the refrigerator. A second fan circulates ambient air through the loop-shaped end and through the conduit to cool the condenser and the compressor. The first and second fans are fixed to oppositely directed output shafts of a common motor.

Abstract: The present invention is an air conditioning unit with indoor and outdoor heat exchanger coils and a pair of dual tangential flow blowers. The blowers are driven by a single motor. The motor directly drives the first blower which is rotatably connected to the second blower. The rotational driving connection of the blowers is located on the opposite side of the motor and compressor.

Abstract: A room air conditioner which is easily assembled by virtue of a base pan having a plurality of vertically oriented fasteners secured thereto for retaining various components of the air conditioner including the compressor, condenser assembly, evaporator assembly and a barrier wall. A novel motor mount is provided which is also secured to a plurality of the vertically oriented fasteners of the base pan. A separate control box assembly is secured to the evaporator assembly via vertically oriented fasteners and is kept clear of any air flow path through the air conditioner.

Abstract: A portable self contained air conditioner which has a platform base (20) with an enclosure (22) attached on top. A recropricating engine (38) is resiliently mounted on the platform with a propeller fan (44) on the front drive and a blower (46) directly attached to the flywheel on the back. A refrigerant compressor (54) is also directly coupled to the engine flywheel with a universal joint drive shaft (56). A drive shaft adapter (60) registers to the flywheel on one end and to the drive shaft on the other with the blower impeller (50) sandwiched in between. A vapor cycle refrigerant system provides the cooling effect and an electrical control system furnishes the operational direction. The engine cooling is integral with the refrigeration system utilizing an additional section of the condenser coil (66) and the same air movement supplied by the propeller fan on the engine.

Abstract: An air conditioning system is disclosed which includes a compressor, a condenser, an evaporator, a first fan for the condenser, and a second fan for the evaporator. A case which encloses at least the compressor, the condenser, the evaporator, the first fan and the second fan comprises an inner housing, and an outer housing which encloses the inner housing. Exposed portions which project on the outer surface of the outer housing and the outer housing are made of insulating materials.

Abstract: This invention relates to portable air-conditioning units for through-hatch marine use which have their conventional air-conditioning mechanisms carried on a base member above the hatch opening and which employs a cover shell enclosing said mechanisms divided into two compartments internally, one compartment not communicating with the outside air which contains a cooling coil and a fan for moving air from a duct which has an opening below the hatch through the coil and back through another duct which also has an opening below the hatch and the other compartment not communicating below the hatch which contains the compressor, a heat exchanger, and another fan for moving outside air through the exchanger. Various shrouds, adjustable supports, and level indicators may be included in the units.

Abstract: An air delivery system for a transport refrigeration unit having a dual speed prime mover, a compressor, a condenser, an evaporator, and first and second air delivery blowers for the condenser and evaporator, respectively. The speed of the first blower is directly proportional to the speed of the prime mover and the second blower is driven by an adjustable speed arrangement. The adjustable speed arrangement includes an electric clutch and a one-way clutch. The electric clutch, when energized, selects a predetermined speed of the evaporator blower, which is greater than the speed of the condenser blower, and when the electric clutch is deenergized the evaporator blower is driven at the same speed as the condenser blower, via the one-way clutch.

Abstract: An air delivery system for a transport refrigeration unit having a dual speed prime mover, a compressor, a condenser, an evaporator, and first and second air delivery blowers for the condenser and evaporator, respectively. The first blower is directly driven by the prime mover and the second blower is driven by an adjustable speed arrangement. The adjustable speed arrangement includes a fixed pulley connected to the second blower, a pulley having a variable, selectable pitch diameter which is biased towards its maximum pitch diameter, an idler pulley, a belt linking the fixed, variable and idler pulleys, and an actuator for moving the idler pulley to select desired pitch diameters of the variable pulley via tension in the linking belt which opposes the bias associated with the variable pulley.

Abstract: A room air conditioner unit is disclosed having a molded polymeric chassis consisting primarily of two chassis members. A sheet metal wrapper is removably installed with four corner fasteners and gives an external appearance of a metal unit, as well as assisting in holding the two chassis members together. All of the operative components of the unit are positioned and supported on the lower chassis member and can be operationally tested prior to installation of the upper chassis member or the sheet metal wrapper. The two chassis members are interconnected without separate fasteners and the only operational component requiring separate fasteners is the compressor itself. The unit is therefore well adapted for automated manufacture with a minimum of labor content during either manufacture or repair.

Abstract: A transport refrigeration system including a compressor, a prime mover for the compressor, a condenser, and an evaporator blower assembly. The evaporator blower assembly includes a shaft driven by the prime mover, a first blower fixed to the driven shaft, a second blower journaled for rotation about the driven shaft, and a clutch for coupling and decoupling the first and second blowers. The volume of air moved through the evaporator and into the conditioned space or cargo area is thus selectable based upon need of the transport refrigeration system, without the necessity of changing the speed of the prime mover. The resulting savings in power realized when only one blower is being driven is automatically translated into fuel savings and/or increased cooling capacity.

Abstract: A roof mounted air conditioning unit for recreation vehicles comprising a cabinet made up of a base pan and a removable shroud. The base pan has a bottom wall and an upstanding perimeter wall with an outwardly protruding porch flange extending around the entire upper edge of the perimeter wall to provide stiffening reinforcement and a ledge on which the shroud seats. The ledge has air inlets and outlets therein providing air flow communication between ambient air and the condenser compartment. The perimeter wall also has air inlets and outlets therein. The shroud is generally imperforate and serves as a roof-like cover for the base pan. The shroud has a generally light color and the base pan has a generally dark color such that the air inlets and outlets in the pan perimeter wall are camouflaged from view. The cabinet is sub-divided by bulkheads into junction compartments including an evaporator coil compartment and the condenser coil compartment.

Abstract: A heat pump, driven by a free piston engine, wherein a refrigeration type of heat transfer unit is used and no externally energized electric motors are required but could be used, if desired. The engine is larger in horsepower than would be required for driving the compressor of the unit only, as it also provides power for driving one or more gas driven or other motors for forcing air through heat exchangers. This arrangement requires substantially less total energy than a unit requiring external electrical energy for operating portions of the heat pumps in that the extra heat in the exhaust from the larger horsepower engine is utilized in a heat exchanger to supply extra heat to the space being heated by the heat pump's primary heat supplier.

Abstract: A fan motor unit for use in combination with a room air conditioner has two separate motors formed in a unitary housing for separately driving the evaporator and the condenser coil fans. By tailoring the characteristics of each motor to the requirements of each motor's respective fans, a reduction in total energy consumed by the unit can be realized.

Abstract: An air conditioning unit having a housing providing support structure for supporting the unit on a relatively thin sheet metal roof of a bus or the like. The housing includes two opposed upright side panels which provide the support for the air conditioning components housed therein and which also in turn are supported on the bus roof, generally adjacent the sidewalls of the bus to utilize the greater load bearing capability of the roof in this vicinity. The housing is separated into an evaporator compartment and a condenser compartment by an internal bulkhead extending between and supported by the side panels. The unit includes a single condenser fan motor and a single evaporator fan motor which are each cantilevered from the bulkhead in their respective compartments to generally counterbalance one another while transferring their weight through the bulkhead to the sidewalls of the housing.

Abstract: Apparatus forming a self-contained air conditioning unit which includes parts and subassemblies of a particular configuration that may be united with each other in order to construct the apparatus with a minimum of cost and effort.