Abstract: A do-it-yourself-friendly self-contained marine air conditioning unit, marine air conditioning system, and method for installation is disclosed. The unit includes a seawater cooling circuit, a refrigerant circuit, and a blower assembly. The refrigerant circuit includes a reverse valve connecting a compressor, an evaporator, and a refrigerant tube thermally engaged with a titanium condenser coil. The seawater cooling circuit includes the titanium condenser coil. The titanium condenser coil has a titanium condenser coil outflow and a titanium condenser coil inflow. The blower assembly is mounted in communication with the evaporator, wherein the blower assembly may pull air through the evaporator. This blower is capable of achieving up to 270-degrees of rotation about a single axis. The system also includes a universal controller to allow for optimal integration with existing systems.

Abstract: A centrifugal fan for a heating, ventilation, air conditioning, and refrigeration (HVACR) system is disclosed. The centrifugal fan includes a volute housing having an inner surface and a curved inlet shroud. The volute housing defines an air outlet. The curved inlet shroud defines an air inlet. The air inlet has an inlet airflow cross-sectional area that lies substantially perpendicular to an outlet airflow cross-sectional area of the air outlet. The centrifugal fan also includes an impeller mounted for rotation about a rotational axis within the volute housing. The impeller has a plurality of fan blades. The plurality of fan blades has an outer surface. The centrifugal fan further includes a light source. The inner surface of the volute housing and the outer surface of the plurality of fan blades includes a photocatalyst layer. The light source is configured to emit light on the photocatalyst layer.

Abstract: An air conditioner unit and cover assembly therefore are provided. In one exemplary aspect, the air conditioner unit includes a bulkhead that defines an indoor portion and an outdoor portion of the unit. A wall of the bulkhead defines an opening that is accessible from the outdoor portion of the unit and is sized to allow various components to be accessed, serviced, and assembled through the opening. The unit includes a removable cover assembly that includes a cover and a gasket. The cover assembly and the wall of the bulkhead include various features for sealing the perimeter of the opening and for guiding one or more wires into the opening.

Abstract: A packaged terminal air conditioner unit (PTAC) and methods for operating the same are provided. The PTAC includes a vent aperture defined in a bulkhead of the PTAC and an auxiliary fan for urging a flow of make-up air through the vent aperture. A controller is configured for obtaining a room occupancy status from an occupancy system and determining a target make-up air flow rate based on the room occupancy status. The controller operates an exhaust fan, such as a bathroom fan, to urge a flow of exhaust air through an exhaust duct at an exhaust flow rate and operates the auxiliary fan to urge the flow of auxiliary air at an auxiliary flow rate, the auxiliary flow rate being substantially equivalent to the target make-up air flow rate minus the exhaust flow rate.

Abstract: A packaged terminal air conditioner (PTAC) system includes a wall sleeve in which a chassis is mounted. The chassis includes the major electrical and mechanical components for the evaporator and condenser sections, and includes a pan that collects condensate from the evaporator section for use in cooling the condenser coil. The sleeve includes one or more guide openings in a sidewall, and correspondingly mounted guide structures inside the sleeve that are configured to guide treatment pellets into different portions of the PTAC system to suppress or inhibit microbial growth. This arrangement obviates the need to partially disassemble the PTAC unit to remove the chassis so that treatment pellets can be placed into the PTAC unit.

Abstract: The invention relates to fresh air ventilation devices adapted for use with air conditioners (ACs) and/or heaters. In operation, the device supplements the recirculating air of the AC/heater with fresh air drawn from outside of the building.

Abstract: A room air conditioner and/or heat pump is shown having a compressor, indoor coil, accumulator, expansion device and reversing valve for changing between a cooling cycle and a heating cycle. Intake louvers direct return air over the entire indoor coil for maximum heat transfer. Discharge louvers are curved upward to prevent short cycling while still being totally adjustable, up and down, right and left. Adjustment posts are anchored to a clip and are adjustable for right or left discharge of air and up or down discharge. Single handles control both the right or left discharge through a rear set of louvers and up or down discharge through a front set of louvers. A no circulation area prevents short cycling and curved edges prevent turbulence in air flow through louvers.

Abstract: An air conditioner is provided. The air conditioner includes: an indoor device installed at indoor; an outdoor device connected to the indoor device using a refrigerant pipe; a ventilation unit for exchanging heat of outdoor air and indoor air while ventilating indoor air and outdoor air; and a guidance duct for communicating the ventilation unit and an air inhalation portion of the outdoor device in order to guide indoor air exhausted from the ventilation unit to an air inhalation portion faulted in the outdoor device. Therefore, the number of ventilation holes to form in an outer wall of a building can be minimized, a construction cost can be reduced, and performance of the air conditioner can be improved.

Abstract: An air conditioning system comprises a housing defining a first airflow path therein between an outside air inlet over a cooling coil and an outlet for delivering outside air from said outside air inlet over said coil to the outlet, a second airflow path between a return air inlet over the cooling coil and to the outlet for delivering return air over the cooling coil, and a third airflow path between the return air inlet and the outlet for delivering return air through the housing without passing over the cooling coil. The system includes outside, return, and bypass air dampers that are sequentially moveable between open and closed positions for directing air through or preventing air from entering the first, second, and third airflow paths, respectively. A controller independently controls the opening and closing of each damper in response to data received from the sensor.

Abstract: A manifold for an air conditioning machine includes a housing with an internal structure defining a first plenum, a second plenum, and a duct. The housing further includes a first sidewall, a second sidewall, a first end mounting face, a second end mounting face, a top sidewall, and a bottom sidewall. The housing also includes a first inlet to the first plenum, a first outlet from the first plenum, a second inlet to the second plenum, a second outlet to the second plenum, a third inlet to the duct, and a third outlet to the duct. The manifold also includes a plurality of windows, a plurality of doublers, a plurality of lugs, and a plurality of flanges.

Abstract: Embodiments of the invention provide an air conditioning unit that includes an intake vent, an exhaust vent, a return vent, a supply vent, and an economizer assembly including a sliding damper and a partition. The partition includes an opening through which air can flow from the return vent to the supply vent during a mechanical cooling mode. The sliding damper includes a vertical panel capable of moving vertically to close the intake vent and the exhaust vent during the mechanical cooling mode and an angled panel capable of closing the opening in the partition in order to enter an economizer mode.

Abstract: A high efficiency thermoelectric cooling system and method is described. The cooling system has a thermoelectric module having a semi-conductor body sandwiched in contact between a pair of thermally conductive plates. A smooth continuous variable output direct current source supplies the semi-conductor body to attenuate thermal stress in the conductive plates due to temperature differential fluctuation across the plates. Current flow in the semi-conductor body transfers heat from one plate to the other plate. A cold heat sink absorbs heat from the cold plate. A heat convection assembly, including a hot heat sink, evacuates heat from the hot plate. The thermoelectric cooling device is secured to a wall of an insulated enclosure. An air convection housing may b provided to evacuate heat from the hot heat sink using an outside air supply or ambient air supply.

Abstract: An ice storage bin and an icemaker apparatus are disclosed. The ice storage bin has a body for defining an ice collection cavity and a channel surrounding at least a substantial portion of the body for permitting fluid flow through the channel. The icemaker apparatus is disposed in a fresh food compartment of a refrigerator. The icemaker apparatus has an ice maker, above the ice storage bin, and an icemaking compartment for accommodating the ice maker and the ice storage bin.

Abstract: Devices and methods for producing purified water. The device includes a reverse osmosis subsystem, a dehumidification subsystem and a purified water storage tank fluidly coupled to the subsystems such that purified water produced by each can be locally stored. A vehicular platform, such as a ship, can be used to locate the device adjacent a supply of saline water and humid air. A saline water inlet, membrane and purified water outlet cooperate in the reverse osmosis subsystem to allow preferential passage of water relative to salt in a saline water supply, while the dehumidification subsystem includes a heat exchanger that extracts moisture from the ambient humid air. Purified water produced by each of the subsystems can be used as a potable water source.

Abstract: A heat exchange system of the invention includes at least multiple grids, a blower including an external rotor motor and a wind blade, a compressor, and a box having multiple exhaust inlets. The exhaust inlets are disposed on the side of the box. The grid is disposed at an exhaust outlet of the box. The blower is disposed in the box and below the grid. The compressor is disposed on bottom surface in the box. The blower is an external rotor axial fan, and the wind blade is disposed outside a rotor of the external rotor motor. The heat exchange system of the invention features simple structure, low cost, large air output, and good blowing effect, and is highly efficient and power-saving.

Abstract: Devices and methods for producing purified water. The device includes a reverse osmosis subsystem, a dehumidification subsystem and a purified water storage tank fluidly coupled to the subsystems such that purified water produced by each can be locally stored. A vehicular platform, such as a ship, can be used to locate the device adjacent a supply of saline water and humid air. A saline water inlet, membrane and purified water outlet cooperate in the reverse osmosis subsystem to allow preferential passage of water relative to salt in a saline water supply, while the dehumidification subsystem includes a heat exchanger that extracts moisture from the ambient humid air. Purified water produced by each of the subsystems can be used as a potable water source.

Abstract: In a vehicular air conditioning apparatus, a first blower unit is connected by a connection duct to a side portion of a casing having respective air passages defined therein, and a second blower unit separate from the first blower unit is connected to a lower portion of the casing. Air is supplied to the interior of the casing from the first blower unit and is cooled by a first cooling section of an evaporator, whereas air that is supplied from the second blower unit is cooled by passing through a second cooling section in the evaporator, which is separated from the first cooling section by a partition plate.

Abstract: An air conditioning system for providing air conditioning to the interior of an automotive vehicle with a mixing chamber designed to create, by controlled mixing of a warm and of a cool partial air flow, at least one warmer and one cooler air-conditionable air flow. The flow paths of the warm partial air flow and of the cool partial air flow intersect in the mixing chamber.

Abstract: Disclosed is a filter unit for an air conditioner, which is provided at an indoor unit for the air conditioner so as to purify the air discharged to a room. The filter unit includes a filter for purifying air, a filter case accommodated in the filter and having a filter gate at a side thereof for placing/withdrawing the filter, and a cover for opening/closing the filter gate.

Abstract: Nowadays in aircraft on-board inert gas generation systems (OBIGGS) are used to generate inert gases. Cooled bleed air of engines or auxiliary turbines is fed to said OBIGGS systems. According to an embodiment of the present invention, an air supply device for an OBIGGS system in an aircraft is proposed that comprises a bleed position (1,2). By way of the bleed position (1,2), air from an air conditioning unit (4,5) on board the aircraft can be bled and can be fed to the OBIGGS system. There is thus no need for an additional heat exchanger and an additional ram-air channel. Maintenance expenditure and air resistance are thus reduced.

Abstract: An atmospheric water harvester includes a cooling member over which humid air flows to condense moisture from the atmosphere. The cooling member may be the evaporator of a conventional, gas vapor-based refrigeration circuit. If a gas vapor-based refrigeration circuit is used, the compressor of the circuit may be variable speed. A fan or impeller used to move air through the system may also be variable speed. Preferred embodiments are reconfigurable between at least two operational configurations such that to varying degrees the incoming air may be pre-cooled, before it passes over the cooling member, by heat exchange with colder air that has already flowed over the cooling member.

Abstract: An energy recovery unit has an energy recovery wheel located in a plenum. Expelled air from the return duct is delivered to the plenum and after passing through the wheel is expelled by an exhaust fan through a side wall. Makeup air is delivered to the plenum and after passing through the wheel is supplied to the return duct by a fan. The makeup air follows a serpentine path from an intake in a side wall to the return duct.

Abstract: Air cleaner including a case having an inlet and an outlet, a fan inside of the case, for drawing air through the inlet and discharging the air through the outlet, a filter assembly inside of the case for cleaning the air drawn into the case through the inlet, a heat exchanger inside of the case for heating or cooling the air drawn into the case, selectively, and a plurality of fins between the fan and the outlet for guiding the air drawn into the case to the outlet, thereby ventilating the room.

Abstract: Disclosed is an air conditioner enabling to perform an air purifying function in an optimum state according to a pollution level of room air, the air conditioner including a cabinet having a first air inlet for drawing in the air, and an air outlet for discharging purified air, a fan provided at the cabinet and forcing the air movement, and a filter unit or a suction grill selectively provided at the first air inlet.

Abstract: In a method of operating an air conditioning unit to reduce moisture varying operations, psychrometric chart data is accessed. In addition, a constraint is set on the relationship between the temperature of air supplied by the air conditioning unit and the relative humidity of the air supplied based upon information contained in the psychrometric chart data. The air conditioning unit is controlled based upon the constraint to thereby reduce moisture varying operations of the air conditioning unit.

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.

Abstract: An air cooling system is provided for cooling ambient or recirculated air. The system includes a compressor receiving ambient air, and a first heat exchanger receiving pressurized air from the compressor. An expander receives warm air from the first heat exchanger. A second heat exchanger receives cold air from the expander. The second heat exchanger also receives supplemental ambient air, and is structured to utilize the cold air to cool the supplemental air and provide mixed cool air. The system cools and dehumidifies the supplemental ambient air to prevent unwanted stratification and condensation.

Abstract: An improved air conditioner system for controlling a desired temperature and a reduced humidity level in a space to be environmentally controlled, that comprises an additional second heat exchanger in the separate indoor air flow path. The refrigerant circuit includes an anti-migration control device between the compressor and the second heat exchanger. An anti-floodback control device is located upstream of the compressor between the first heat exchanger in the indoor air path and the compressor. An expansion control device is also located in the refrigerant circuit between the heat exchanger in the outdoor air flow path and the heat exchanger in the indoor air flow path. The second heat exchanger effectively becomes a hot gas re-heat de-superheater heat exchanger. The system enhances the latent capacity for providing dehumidified air of from 25–40 percent.

Abstract: An air conditioning module having all the necessary components for conditioning air, is so sized and arranged that when placed in an internal compartment of a bus, has its respective openings register with an existing return air duct and a supply air duct on the bus. The compartments and modules are so arranged that they can be paired in back-to-back relationship, with one on each side of a longitudinal center line of the bus. Each of the modules has an intermediate partition dividing the module into an upper evaporator section and a lower condensing section. A mixer flap is placed in an intermediate position with respect to the partition such that its position may be selectively adjusted to thereby vary the amount of fresh air and return air that is passed through the condenser coil and evaporator coil, respectively.

Abstract: An air conditioning system provides a pack conditioned air passage which intersects with a recirculation passage prior to communication of the combined air flow with a mixer. The combined air flow traverses a distance between the intersection between the pack conditioned air passage and the recirculation passage and an entry to the mixer which reduces the required volume of the mixer as compared to conventional systems.

Abstract: Disclosed is a cooling-heating combination air conditioner being provided with an outdoor heat exchanger and an indoor heat exchanger in a single case. The present invention has advantages of freely adjusting a ventilation rate from 0% to 100% with its simple structure without equipping a separate ventilator, and improving efficiency in cooling and heating effectively by recovering an air discharged during a ventilation process and a waste energy of condensed water generated in the indoor heat exchanger and by maximizing a path along which a coolant is circulated according to cooling-heating mode conversion.

Abstract: A bustop air conditioning module is provided with an evaporator section having a return air opening and a condenser section having a fresh air opening. A mixer opening is provided between the fresh air opening and the evaporator coil, and a flap is selectively positionable to cover or uncover the mixer opening to allow a selective amount of fresh air to be passed to the evaporator coil. Simultaneously, the flap also to selectively block a portion of the return air flowing to the evaporator coil and at the same allow a portion of the return air to be exhausted from the system.

Abstract: A refrigeration container is provided with a manually operated fresh air vent with a position sensor which provides a signal to the microprocessor based controller indicative of the position of the fresh air vent. The fresh air vent controls both the providing of fresh air to the circulating air in the container and the exhausting a portion of the circulating air. The evaporator fan is run continuously when the air vent is open to prevent the build up of gases produced by the perishable cargo.

Abstract: An air conditioning system for a vehicle includes a first air path formed within an air duct, and a second air path formed within the air duct. The air conditioning system also includes an air mixing damper for adjusting a first amount of air, which flows within the first air path, and a second amount of air, which flows within the second air path. The air mixing damper includes a plurality of convex portions, and a plurality of concave portions, each of which concave portions is positioned between adjacent pairs of the plurality of convex portions. The air conditioning system also includes a drive mechanism for driving the air mixing damper. The drive mechanism includes a first gear engaging a portion of the plurality of convex portions and a portion of the plurality of concave portions. The drive mechanism also includes a shaft coupled operationally to the first gear, and an end of the shaft is positioned outside the air duct.

Abstract: A casing 1 of an automotive air conditioner is formed with a recess 12 for accommodating a steering member S extending in a right-left direction of a vehicle. The casing 1 is divided into an instrument panel-side part Rp and a fire panel-side part Fp with the recess 12 as a boundary.

Abstract: An air conditioning unit (1) for interiors is disclosed, carrying out a method comprising the following steps: carrying out a first thermal exchange between a first quantity of air drawn from an interior to be conditioned (A) and a second quantity of air drawn from the external ambient (E) in a first heat exchanger (7); after the first thermal exchange conveying the second quantity of air to a thermal exchange bank (12) connected to a thermal recovery bank (10) both belonging to a refrigerating circuit to carry out a second thermal exchange; after the second thermal exchange conveying the second quantity of air to the interior to be conditioned (A); after the first thermal exchange effecting a further thermal exchange between the first quantity of air and the recovery bank (10) before discharging the first quantity of air to the external ambient (E).

Abstract: A cabin air temperature control system includes cooling recirculated air. A first air circuit includes an intake that receives air from outside the cabin and then conditions the air to bring it closer to a desired cabin temperature before the air is introduced into the cabin. A second air circuit recirculates air from the cabin and then reintroduces it back into the cabin. The second circuit includes an air cooling assembly, comprising a heat exchanger, that is selectively used to cool the recirculated air before it is reintroduced into the cabin. A bypass flow arrangement is provided to selectively direct the recirculated air through the air cooling assembly or to simply recirculate it back into the cabin depending on the current temperature adjustment needs.

Abstract: A dual path single coil dehumidification system is provided. The system includes a housing that is mounted onto the top of a building that is to be dehumidified. The system draws in outside air which is circulated along its own dedicated path. A cooling coil is disposed in the dedicated outside air path. The outside air therefore passes over the cooling coil and is dehumidified prior to being mixed with any other air. The system also draws in return air from the interior of the building. The system is arranged so that the return air is drawn over refrigeration units that are located in the building to cool the return air. The cooled return air is then drawn into the housing where it is mixed with the outside air only after the outside air passes over the cooling coil. The mixed dehumidified outside air and the cooled return air form a supply air stream that is delivered to the interior of the building.

Abstract: A gas-flow heat exchanger comprising a set of parallel, spaced, heat-conductive areas providing between them a stack of pockets each containing parallel baffles (24) which define a platen of passageways (26) guiding the gas-flow path through the pocket between inlet and outlet openings (22, 23). The openings being arranged in four parallel lines at the sides of the stack, two of the lines respectively containing the inlet and outlet openings (22, 23) associated with the gas flow paths of alternative pockets. The remaining two lines respectively containing the inlet and outlet openings associated with the remaining pockets. Each pocket containing a removable frame (21) formed with the openings provided at the ends of the gas flow path through it and supporting within the frame the parallel baffles (24) which divide the gas-flow path into the platen of passageways (26). All of the passageways (26) provide a substantially equal dwell time to gas passing therethrough.

Abstract: A positive pressure heat pump system and method wherein a heat pump is housed within a cabinet having an outdoor blower section and a segregated indoor blower section. The heat pump condensing coil is positioned within the outdoor air blower section and a cooling coil is positioned within the indoor blower section. A variable angle vane is operable to divert pressurized and heated outdoor air, downstream of the condensing coil, from the outdoor air blower section into the indoor air blower section, upstream of the cooling coil, so that cooled and pressurized air is recycled into the interior of a building to maintain a positive pressure within the building relative to the surrounding ambient environment.

Abstract: A wall curb 10 for attachment to the exterior wall 32 of a building to removably secure a wall mounted HVAC unit 38 to the exterior surface 44 of the wall 32. The wall curb 10 serves to attach the supply air duct 34 from within the building to the supply air opening of HVAC unit 38 and to attach the return air duct 36 from within the building to a return air opening of the HVAC 38. An alternate embodiment of the invention 10A includes an outside air opening 60 with a controllable damper 62 for regulating the ratio of outside air verses return air from the building that enters the HVAC unit 38.

Abstract: An air circulation system is provided for a building having a plurality of zones to be heated, ventilated or cooled. The system includes an air circulating apparatus arranged to supply either heated, cooled or ventilated supply air to the various zones of the building via a plurality of supply ducts. The apparatus also draws return air from the zones via a plurality of return ducts. A damper is coupled to both the supply and return ducts of each zone, adjacent the air circulating apparatus, to balance the amount of supply and return air in each zone for reducing mixing of air between zones and stratification within a zone. Accurate and independent control of each zone in relation to the other zones in the building is thus permitted. The circular ducts are formed of sealed PVC or other suitable plastic material to improve the efficiency of the air delivery system both by reducing pressure losses and temperature losses conducted through the walls of the ducts.

Abstract: An air conditioning unit (1) for interiors is disclosed, carrying out a method comprising the following steps: carrying out a first thermal exchange between a first quantity of air drawn from an interior to be conditioned (A) and a second quantity of air drawn from the external ambient (E) in a first heat exchanger (7); after the first thermal exchange conveying the second quantity of air to a thermal exchange bank (12) connected to a thermal recovery bank (10) both belonging to a refrigerating circuit to carry out a second thermal exchange; after the second thermal exchange conveying the second quantity of air to the interior to be conditioned (A); after the first thermal exchange effecting a further thermal exchange between the first quantity of air and the recovery bank (10) before discharging the first quantity of air to the external ambient (E).

Abstract: The invention relates to an air-conditioner having a heat exchanger, such as an evaporator, for example, with a reservoir for a cold storage medium.

Abstract: A multipurpose air conditioning apparatus is disclosed. The apparatus comprises fan assemblies (3, 13), a compressor (4), a condenser, an evaporator, a liquid and gas circuit, throttling means, air inlets, air outlets and means for redirecting the air flows. The apparatus is adapted such that the functions as condenser and evaporator are interchangeable for heating of air or cooling of air, respectively, in that the liquid flow in the liquid and gas circuit through the condenser, evaporator and the throttling means is reversible on demand. The apparatus comprises at least two separated units, Main and Annex, each having an air heat exchanger (2, 12), which operates as a combined condenser/evaporator, a fan assembly (3, 13), a fresh air inlet (7a, 17a), a room air inlet (7c, 17c) and a mixing chamber (x, 1x) upstream of the air heating exchangers (2, 12), an air outlet (7b, 17b) downstream of the air heating exchangers (2, 12) and means (9, 10, 19, 20) for redirecting the air flows.

Abstract: A room air conditioner of the type having a partition, which divides the indoor and outdoor sections of the air conditioning unit. The partition has an exhaust opening for exhausting room air into the outdoor section. An improved exhaust and control arrangement includes a scroll structure mounted in the indoor section for directing conditioned air into the space to be cooled. The scroll structure has a rear wall in confronting relation with the partition and has an exhaust opening therein in fluid communication with the indoor section side of the exhaust opening in the partition. Support structure is provided in the indoor section located laterally of and forwardly of the exhaust opening in the partition. The partition is provided with a second opening therethrough adjacent the support structure. A one-piece exhaust actuation device includes an elongated actuating arm.

Abstract: An air conditioning system moisture control method and apparatus has a housing having a heat exchanger therein for removing heat and moisture from the air. The housing has a main air inlet thereinto and a main air outlet therefrom. Moisture is added to the inlet air and some of the moisture laden air is then directed from the housing through a secondary air outlet. A secondary air inlet draws outside air into the housing between the main air inlet and the heat exchanger. The moisture laden inlet air is then cooled and has moisture removed by passage through the heat exchanger. Additional moisture is then removed in the air conditioning outlet using a desiccant material, or the like, so that dew point of the air entering the heat exchanger housing is increased to improve moisture removal in the air conditioning system.

Abstract: A housing for physically and thermally isolating the evaporator section of an air conditioning unit that is mounted on the cabin roof of a trailer, van, or motor home. The housing is molded in two sections with the lower section being secured to the base pan of the unit over return air duct and the supply air duct formed in the pan. The housing is divided into a blower chamber containing the supply air duct and an evaporator coil chamber containing the return air duct. A converging nozzle is molded integrally into the housing which connects the evaporator coil chamber with the blower chamber. Elongated vertically disposed openings are provided in the side walls of the housing having guideways for contacting the tube sheets of an evaporator coil that is mounted in the evaporator coil chamber to prevent air from passing around said coil. Internal surfaces are provided within the housing for efficiently turning the air flow through the housing 180.degree..

Abstract: A ventilating device of a window type air conditioner, which includes: a ventilating hole formed in a partition that connects the room portion with the outdoor portion of the air conditioner; a first lever which moves forward and backward in the discharge grill and the room portion; a lever guide portion that prevents the first lever from being deviated when the first lever is moved forward and backward, maintaining the horizontal state of the first lever; a damper on the back end portion of the first lever that opens and closes the ventilating hole with the forward/backward movement of the first lever; and a second lever which is formed on the front end of the first lever and is received in the room portion of the body during the shipment of the product, but is rotated in a straight line with the first lever, by an artificial force, to be exposed to the exterior of a front panel in the front end portion thereof, after installation of the product.

Abstract: In an air conditioning system designed to operate in relatively high humidity conditions, an auxiliary unit, including a complete and independent operating refrigerant circuit, is installed in air flow relationship therewith such that outdoor make-up air is caused to flow first through an auxiliary evaporator coil then through the system evaporator coil, and at least a portion of the return air is passed through an auxiliary condenser coil before being discharged outside. Energy is thereby recovered from the return air, and the make-up air is pre-conditioned to improve the dehumidifying effect of the system.