Abstract: A portable, insulated carrying chest having both hot and cold compartments. Two separate, insulated compartments are provided within a receptacle. Each compartment has its own cover, so that when one compartment is opened, the other is not disturbed, and heat transfer therebetween is minimized. One compartment has a chilling medium, such as a commercially available frozen, enclosed medium. The other compartment has a heating medium, such as a commercially available heating pack comprising a material which emits heat spontaneously upon being exposed to air. Metal carriers are provided for holding two such heating packs against opposing walls of the hot compartment.

Abstract: The present invention involves split system air conditioners. Specifically, the present invention provides a condenser unit with cross-flow blowers. A single cross-flow blower may be used to draw air through a heat exchanger and expel the air adjacent to a cut-off portion. Further, dual cross-flow blowers may be provided to enhance the performance of the condenser unit. The combination of air streams from two cross-flow blowers provide better air circulation through the heat exchangers and a more uniform exhaust stream. The condenser unit is more compact and can be mounted on the wall, on the overhang, or on the top of the building. These various mounting locations take advantage of the air boundary layer near the building and thus the air conditioning system operates more efficiently.

Abstract: An air conditioner includes a case assembly having a front portion, a rear portion, and a top portion in which a suction aperture is formed, a heat exchanger, located in the case assembly, for performing heat exchange with respect to an indoor air introduced through the suction aperture. A blower is located in the case assembly, for supplying the indoor air introduced through the suction aperture into the heat exchanger and for expelling the indoor air from the case assembly after the heat exchange by the heat exchanger. And, open-close means are provided for the top portion of the case assembly, for selectively opening or closing the suction aperture.

Abstract: An integral type air conditioner intended to suppress the reduction in air conditioning ability to the utmost, even in introducing open air, includes a partitioning plate for partitioning the interior of the main body into an indoor side chamber and the outdoor side chamber. There is provided a suction port for introducing an air in the outdoor side chamber into the indoor side chamber, and a damper positioned in the outdoor side chamber for opening/closing the suction port. In the indoor side chamber, there are provided a cross-flow fan and a rear casing of the cross-flow fan. Further, on the windward side portion of the rear casing, there is provided auxiliary suction ports that communited with the suction port.

Abstract: An air conditioning unit for use with a central thermal unit supply system. The air conditioning unit includes a formed wall mounting member which is secured to a wall, and from which is supported a heat exchange unit consisting of a heat transfer fluid coil and an air moving assembly including a tangential blower.

Abstract: An outside section for a split system air conditioning unit. The outside section has a housing including a first side, a second side, a top, a bottom, a front, and a back. The housing also includes an air inlet located in a middle portion of the front, and an air outlet located in the first side. A first baffle divides the housing interior into first and second segments. The first segment includes the air inlet, the air outlet and a heat exchange coil located therebetween, and the second segment includes a compressor operably connected to the heat exchange coil.

Abstract: A cabinet refrigeration system suitable for use in a wide variety of refrigeration cabinets is disclosed. The system includes a cabinet for storing or displaying refrigerated food and a thin, self-contained refrigeration unit of unitary construction removably mounted on the inner surface of one of the walls of the cabinet thereon by making it easily replaced, repaired or moved to a different cabinet. The cabinet may have drawers, shelves, bins or other food storage or display receptacles that may be accessed either through the front or the top of the cabinet. The refrigeration unit operates by drawings warm air into the bottom of the unit and expelling cold conditioned air out of the top of the unit. Adjustable deflectors are mounted on the outside of the refrigerator unit at the unit's output vent for precisely controlling the direction of flow of the cold air exiting the refrigeration unit.

Abstract: The present invention relates to a window-type air conditioner comprising a body provided with a first portion and a second portion, the portions being partitioned by a intermediate plate. The first portion includes an inlet portion for intaking air from an indoor room and an outlet portion for discharging heat exchanged (conditioned) air into the indoor room. The inlet and outlet portions are relatively thin and are mounted at a window of the room extending forward to communicate with the room and isolate the second portion from the window. The second portion includes an operating portion which is mounted at an outside wall of the room. This invention allows for greater visibility through the window in which the air conditioner is mounted, and greatly reduces the operational noise from entering the indoor room.

Abstract: An air conditioner system includes separate indoor and outdoor units affixed to opposite sides of a building wall. A plurality of conduits extend through the wall for transferring heat exchange media and electrical media between the units. Each conduit comprises a hollow first pipe extending through the wall, and two hollow second pipes connected to opposite ends of the first pipe and also connected to a respective unit. A hollow threaded fastener connects each second pipe to its respective first pipe and conducts a fluid between the pipes or houses an electrical wire extending between the pipes.

Abstract: A self contained, mechanical cooling apparatus is mountable on a door which is pivoted on hinges to a door frame. The door may be mounted for either exterior or interior service in a residential or commercial setting. The door frame is attached to the building structure in a conventional manner. The door provides a closure for a designated room and the door mounted cooling apparatus maintains the desired, generally lower, temperature in the room. Major cooling components mounted in the door include a refrigerant compressor, evaporator coil, condenser coil, accumulator, capillary tubing, refrigerant piping and electrical components. The parts are enclosed in a one piece, premolded plastic apparatus housing. Two supply air fans are mounted within the housing, and molded in supply and return air grilles communicate with the enclosed space.

Abstract: An air conditioning system for use in an aeroplane hangar. The hangar includes a fuselage work area for works on a fuselage of an aeroplane and a main-wing work area for works on a main wing of the aeroplane, with the work areas being partitioned by a partition wall. An air conditioning device is provided for conditioning temperature of air to be fed to either work area. Further, a recycling device is provided for cleaning air exhausted from the one area and then feeding the cleaned air to the other area.

Abstract: A replacement rear door for a van comprising in combination an interior front panel, an exterior rear panel with exterior peripheral panels defining an internal equipment storage zone; an air conditioning system housed entirely within the equipment storage zone for cooling the warm air generated in the passenger section of the van; a gasoline powered internal combustion engine for generating the power to operate the air conditioning system; gasoline connection means adapted to be coupled into the main gasoline supply line for supplying fuel to the engine; electric connection means adapted to couple the main battery of the van to the peripheral equipment of the engine; electronic means for controlling the stopping and starting of the air conditioning system; and hinge means extending outwardly from one of the exterior side panels for mating with the body hinges on the van.

Abstract: An industrial electronics air conditioner has a cabinet with top, bottom, side and end panels, an electromechanical refrigeration system within the cabinet, an easily removable elongate condenser blower and motor module which comes out and goes in transversely when a side panel is removed, an easily removable evaporator blower and motor module having a centrifugal blower wheel and manual latches for retention to and removal from an end panel, a unique improved structure of intersecting interior barriers defining air outlet plenums and crossing hot ambient and cooled load outlets, and unique corrugated plastic exhaust ducting for exhausting hot ambient air to the outside of an electronics enclosure. A method of installing the air conditioner within the enclosure is also provided.

Abstract: Air conditioning conversion kits ideally adapted to be retrofitted to vans, trailers, campers, or other recreational vehicles providing improved air conditioning efficiency and flexibility for campers. The kits are esthetically harmonious with the existing vehicle, both on the outside of the vehicle and on the inside. Our preferred systems enable use of the A.C. outlet at a campground or trailer park for air conditioning the vehicle while stopped, without running the engine or draining the battery. Bulk is reduced by physically separating the condenser from the evaporator. The preferred "Continental kit" version incorporates major structural air conditioning components within an attractive spare tire carrier disposed on the vehicle rear. The vented circular carrier attractively houses the condenser and the compressor, along with related accessories. The evaporator portion of the system is incorporated into the vehicle's interior door panel.

Abstract: An air conditioner having improved internal structure and intended specifically for cooling electronic enclosures has a cabinet containing a compresser, evaporator and condenser coils, a load air blower, an ambient air blower, and a single motor connected to both blowers. The interior of the cabinet is divided by upper and lower horizontal dividers into upper, central and lower compartments. The upper compartment is divided into a separate ambient air intake compartment and a separate load air intake compartment with both blowers and the motor being in the load intake compartment. The evaporator coil and the ambient intake compartment and associated structure are asymetrical as is the compresser installation. The load air inlet and outlet are on the back, the ambient inlet is on a side and the ambient outlet is on the bottom. This new air conditioner is of exceptionally small physical size for its cooling capacity and is relatively quiet and easy to manufacture.

Abstract: An L-shaped one-package type air conditioner comprising an air circuit unit which extends horizontally to be positioned indoors, and an outdoor unit which extends downwardly from the rear end portion of the air circuit unit is provided with an elongate member protruding downwardly from the lower surface of the air circuit unit, and with two projections. A bracket for installing the air conditioner is also disclosed. The bracket comprises: a fixing portion which engages with a window frame; an upper guiding portion extending horizontally; and a lower guiding portion extending vertically. The projections are guided by the upper and lower guiding portions.

Abstract: A cooling system for cooling the inside of an enclosure includes a first cooling assembly with an evaporator and condenser for providing a first level of cooling for fluid in the enclosure. The second cooling assembly includes a vortex tube which supplements the cooling provided by the first assembly.

Abstract: A volatile solvent conservation modular unit and method for effecting solvent conservation is provided. The cooling coil modular unit is arranged to be disposed in the freeboard zone of a cleaning or degreasing apparatus that uses a volatile solvent. The freeboard zone chiller positioned above the vapor zone and the primary condenser to recover solvent from the relatively less dense solvent/air mixture escaping above the primary condenser and is formed so as to be disposed along one side of the degreaser vessel rather than on all four sides to minimize the obstruction of access into the vapor zone. This one-sided single freeboard chiller positioned on but one side produces a vapor suppression blanket that is effective and is readily retrofitted on existing apparatus without the need for dismantling of the existing unit.

Abstract: An air conditioner mounted on a vertical wall and an method, with the air conditioner including air intake ports and air exhaust ports provided on each side of and air conditioner body which contains heat exchangers, fans and motors. The air is drawn in from the sides of the air conditioner where it is heat-exchanged and then discharged from sides thereof.

Abstract: In an air conditioning system having the outdoor coil disposed in a wall opening with the outdoor air being required to flow horizontally inwardly pass through the coil and then flow horizontally outwardly as it is discharged, the propeller fan is placed in a horizontal plane at the top end of the coil such that the air is caused to flow into an upper plenum where the air is turned 90 degrees to be discharged. The height of the plenum is preferably chosen to optimize the performance while minimizing the plenum height.

Abstract: A modular self-contained mechanical refrigeration unit adapted to form one wall of a refrigeration appliance is relatively thin and includes all of the electrical, mechanical and control components of the sealed refrigeration system.

Abstract: A portable temperature maintenance system for maintaining a desired temperature in a cargo container. The system includes a lightweight panel for releaseable attachment to the opening of a cargo container, a refrigeration unit separate from the lightweight member, and flexible conduits for conducting vapor between the cargo container and the refrigeration unit in a substantially closed looped system.

Abstract: A heat exchanger for use where any of a number of possible configurations of ductwork are possible, includes an approximately rectangular housing having a first panel with a surface area and with four corners including a first and a second corner situated diagonally opposite one another, and a third and fourth corner situated diagonally opposite one another. A heat exchanger is coupled to the panel situated approximately diagonally within the housing spanning from approximately the third corner to the fourth corner such that the housing is partitioned into a first chamber adjacent the first corner and a second chamber adjacent the second corner. A first duct is situated near the first corner on the first panel and occupying less than approximately 1/4 of the surface area, for coupling air to the first chamber. A second duct is situated near the second corner on the first panel and occupying less than approximately 1/4 of the surface area, for coupling air from the second chamber.

Abstract: A sliding lock mechanism is mounted behind the front wall of the chassis, and associated openings are provided in the front and side walls of the chassis to respectively provide operator access to the lock mechanism and allow it to be reciprocally moved so as to extend through the side wall opening to engage a flange surface of the cabinet to thereby lock the chassis in its installed position. A fastener is also provided in the front wall opening to secure the locking member in its engaged position.

Abstract: A blow convector for indoor space air conditioning which can be installed in a room while maintaining its walls fully available for other uses, the blow convector having a segmental shape with a base substantially in the form of a circular segment and having an arcuate front.

Abstract: An air-conditioning system including an air conditioner incorporating a heat exchanger and a fan therein, and duct assembly connecting to the air conditioner for supplying conditioned air to a specific room equipped with the air conditioner and to another room, the duct assembly comprising an auxiliary duct removably attached to a front cover of the air conditioner and a main duct separably connected to the auxiliary duct to extend from the specific room to said another room and having air outlet portions for supplying air to the respective rooms, the auxiliary duct having an air channel for guiding the air discharged from the air outlet of the front cover into the main duct.

Abstract: An air conditioner wall sleeve is et forth for use in combination with window-type air conditioning units for through-the-wall construction. The wall sleeve is of a height and depth substantially that of an associated air conditioning unit, but is of a width greater than said unit. Spacer blocks of varying dimensions are securable at a forwardmost point of respective side walls of the wall sleeve to present planar surfaces with a distance therebetween within said sleeve to substantially equal that of an air conditioning unit's width. Louvers are formed along a rear surface of said wall sleeve whereupon a gap is presented between side interior walls rearwardly of said adapters for enabling venting of heated discharge air rearwardly of said air conditioning unit and for enabling intake of fresh air to said unit.

Abstract: A wind direction deflection blade mounting apparatus for use in a unitary air conditioner having an outer box, a substrate removably housed in the outer box, and a partition board which partitions said unitary air conditioner into an outdoor side and an internal side in which the outdoor side is provided with a compressor, a fan motor, an outdoor heat exchanger, and an indoor fan and said indoor side is provided with an indoor heat exchanger, an inlet port, and outlet port, and a foam including an indoor fan, which comprises a plurality of wind deflection blades, a coupling means for being rotatably coupled with said interlocking shafts of said blades, a motor housing chamber, a removable drive unit having a motor for reciprocating said coupling means housed in said motor housing chamber, a crankshaft extending from the shaft of said motor and a shaft inserting groove provided on the bottom face of said outlet port and opening in the front face thereof and extending toward the rear face of said outlet port th

Abstract: A sleeve assembly and an air conditioning unit are disclosed for mounting the air conditioning unit in a through the wall application. The sleeve assembly includes duct connections, drain connections and electrical connections such that during construction of the building all the connections of the air conditioning unit are made to the sleeve. Thereafter, the air conditioning unit may be engaged into the sleeve to complete the installation.

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: Transport refrigeration apparatus including a metallic frame having first and second upstanding end portions, an upstanding back portion, and a horizontally oriented portion which extends between the upstanding end portions and the upstanding back portion. The metallic frame includes first and second spaced end members each having first and second integral portions. The first integral portions form part of the upstanding back portion, and the second integral portions form the first and second upstanding end portions. The second integral portions function as support arms for refrigeration components of the apparatus, with each having a generally triangular configuration which includes a horizontally oriented lower side, a vertically oriented back side, and a flanged side. The flanged side includes a horizontally oriented lower portion which flares upwardly via a smoothly radiused intermediate portion to join an upper portion which slopes towards the vertically oriented back side.

Abstract: A heater/cooler unit specially adapted for motels, hotels, hospitals and like structures enables adjacent rooms to be cooled or heated by using certain commonly shared components. An evaporator is disposed in each of two adjacent rooms. The evaporators are connected to a common compressor and condenser disposed outside the rooms. Appropriate control mechanisms are provided to enable the evaporators to operate independently. The components are disposed in a housing which forms a portion of the exterior wall of the structure and a portion of the common wall of the rooms. Certain of the components can be placed atop a cart which can be wheeled into and out of the housing so as to facilitate installation and servicing of the unit. Electrical strip heaters can be added to the evaporators to provide a heating capability. An alternative embodiment employs interior and exterior heat exchangers operated as heat pumps.

Abstract: A device is disclosed for air conditioning in a winter garden, more particularly for dehumidifying a winter garden in order to avoid formation of perspiration and condensation water, the device having a housing (16) in which first, second and third heat exchanger means (26,28,30) are selectively connectable to a compressor means (32). Communication between said heat exchanger means and compressor means may selectively be established in such a manner that the winter garden can be dehumidified, cooled or heated, as required. At the same time, the device permits heat from the winter garden to be recovered for use in the dwelling house (10).

Abstract: A transport refrigeration system suitable for narrow post highway trailers in which the refrigeration system intrudes into the trailer cargo space only to the extent necessary to direct trailer air into an evaporator. The evaporator is completely serviceable external to the trailer, with its inlet surface being substantially co-planar with the inside surface of the front wall of the trailer. An air delivery unit is manufactured as an integral assembly and mounted in a main support frame of the transport refrigeration system without requiring further adjustment. Mounting of the air delivery unit completes a plenum chamber for the evaporator, placing an axially narrow blower into an air flow path in which the blower draws trailer air through the evaporator and forces conditioned air back into the trailer. Mounting of the air delivery unit also places a fan into an air flow path in which outside air is directed upwardly through a condenser, and laterally through an engine radiator.

Abstract: A cabinet unit for housing component parts of an air conditioning system and in particular, to a cabinet formed by three molded sections that include a base section, a cover section and a back section that are interlocked in assembly to establish a high strength self-standing, rust proof enclosure. The back section contains a pair of internal vertical walls that coact with the cover section to form an air passage for connecting an inlet vent and an outlet vent and a separate equipment compartment adjacent to the air passage. A molded volute shaped wall closes the top of the air passage and forms a casing for housing a cylindrical fan. A guide means is removably supported in the front cover within the air passage adjacent the fan which serves to establish a stable laminar flow of air moving through the fan.

Abstract: A package terminal air conditioning unit that is split into two sections, an indoor section and an outdoor section. The components of the indoor section are housed in an indoor cabinet of all molded construction having a recirculating air duct that is contoured to conduct air quietly and efficiently through the cabinet. Interchangeable guide vanes are also mounted in the air duct to act in conjunction with a crossflow fan rotor which permits the cabinet to be adapted to accommodate fans of different sizes and shapes without having to alter the configuration of the molded cabinet. The outdoor section simply contains a heat exchanger and a small blower which are housed in a lightweight cabinet. The outdoor cabinet used in one preferred embodiment of the invention is hung on the outside wall of a building and the outdoor heat exchanger is connected to the remaining air conditioning components housed in the indoor cabinet by two refrigerant lines.

Abstract: An erectable sleeve is movable between a relatively flat collapsed orientation and a relatively high rectangular erected orientation for use. The sleeve comprises a bottom member and a pair of end members, each end member being pivotally secured to a respective end of the bottom member and pivotable between a folded position wherein the end member is substantially parallel to the bottom member and an extended position wherein the end member is extended substantially perpendicular to the bottom member. A detachable top member includes friction fit means for engagingly receiving the free ends of the end members for maintaining the end members in their extended position.

Abstract: A heater/cooler unit specially adapted for motels, hotels, hospitals and like structures enables adjacent rooms to be cooled or heated by using certain commonly shared components. An evaporator is disposed in each of two adjacent rooms. The evaporators are connected to a common compressor and condenser disposed outside the rooms. Appropriate control mechanisms are provided to enable the evaporators to operate independently. The components are disposed in a housing which forms a portion of the exterior wall of the structure and a portion of the common wall of the rooms. Electrical strip heaters can be added to the evaporators to provide a heating capability. An alternative embodiment employs interior and exterior heat exchangers operated as heat pumps.

Abstract: Disclosed is a method of and apparatus for heating and cooling. The method and apparatus employ a thermodynamic moat across which heat energy conductance can be entirely prohibited. The moat comprises a heat source for a heat pump. The heat pump can be contained within the thermal protection of the moat. Thus its energy of operation may be added to, rather than lost from, the system. Structures for absorbing solar irradiation are disclosed, as are means to contain these structures within the protection of the moat, thereby to overcome grave deficiencies of solar collectors used in cold climates. A method of and apparatus for utilizing the solar absorber structures for summer cooling are also disclosed.

Abstract: A water cooled central air conditioning system for use in combination with the existing duct work and furnace of a central air heating system of the type commonly used for heating residential homes. The air conditioning system is comprised of an A-frame evaporator coil supported on angle irons which are integral with an abutting box-line central unit housing a compressor, condensor, expansion valve, water inlet, outlet, condensate outlet, and other components. The entire monolithic assembly is suspended from above by spring-loaded cords attached to the central unit. The evaporator coil projects through an opening in the furnace wall into the hot air plenum of the furnace, and a foam gasket provides a resilient air-tight seal around the opening.

Abstract: A ceiling or wall unit comprises a plurality of juxtaposed aluminum plates, whereby one rim of each plate is optionally inserted in a groove of an abutting plate. According to the invention, each aluminum plate is provided with at least one cooling pipe shaped integral with the plate, inner longitudinal ribs being provided in the cooling pipe. In this manner the plate can be used for cooling a room, the temperature of which is too high on account of the outdoor temperature or heat-producing machines, the lighting or like equipment. The inner longitudinal ribs of the cooling pipes increase the inner surface of the cooling pipes whereby the dimensions of the pipes and consequently of the plates can be correspondingly reduced.

Abstract: This compact motor vehicle passenger compartment air conditioning system fits on the vehicle floor inside the motor vehicle. This mounting design avoids outside air conditioner mounting problems for vans and campers. The three-in-one motor vehicle air conditioning system achieves its space saving characteristics primarily by the use of a single coil having three separate compartments. One compartment cools by means of tapping into the vehicle's engine air conditioner. A second compartment heats by means of tapping into the vehicle's engine coolant system. A third compartment cools by means of an integral A.C. powered compressor. A primary circulation fan is powered either by D.C. or A.C. sources. A secondary exhaust fan is powered by an A.C. source. Outside air does not mix with passenger compartment air in any modes. Five modes of operation are possible with an optional onboard A.C. generator. The modes are on-the-road heating, off-the road heating, on-the-road air conditioning without using any A.C.

Abstract: An air blower chamber includes a partition plate provided with an air intake opening, an air blower mounted on the partition plate so as to be detachable from the same through the air intake opening, a box for auxiliary parts and an air filter placed at an inlet opening of said main body. An air intake panel is detachably fitted to an opening of a ceiling which is spaced apart from and below the inlet opening and an air intake chamber for connecting the inlet opening to the opening of the ceiling. Accordingly, inspection and services for blades and the motor of a blower, auxiliary parts and air filter can be easily made by simply detaching the air intake panel without necessity of a worker to enter in the ceiling.

Abstract: A heat pump and method are presented which includes a compact two-compartment housing in which each compartment contains a condensor-evaporator. The heat pump which has upper and lower compartments which are vertically aligned is installed totally within the interior of a building and air from the attic area of the building is used as a supply while spent air is exhausted below the heat pump and no outside wall space is required for installation. The method of operation includes reversing the refrigerant flow and during the heating cycle condensate from the upper condensor-evaporator is directed to the lower condensor-evaporator to provide humidity to the interior of the building.

Abstract: An outdoor unit for an air conditioning apparatus of a through-the-wall multitype which is installed within an installation opening formed through the wall of a room so as to conduct heat exchange of outdoor coils outside the room whereby connection of piping between the outdoor unit and indoor units is easily performed inside the room.

Abstract: A packaged terminal air-conditioner comprises a housing which includes a cabinet, a bottom plate and front cover attached to the front of the cabinet being mounted through a house wall and the like. On the front side of the bottom plate, there is provided a fan casing unit having a partition which divides an inside of the housing into indoor and outdoor sections. A propeller fan and an outdoor heat exchanger are arranged in the outdoor section, while in the indoor section, a cross-flow fan is mounted in the front vicinity of the partition of the fan casing unit and extending in parallel with the surface of the partition and an indoor heat exchanger is arranged in front of the fan casing unit. The partition serves both an air guide portion for guiding an indoor air heat-exchanged to the cross-flow fan and a scrolling portion of the cross-flow fan for producing an air stream.

Abstract: Integrally formed with a molded plastic housing for a room air conditioner, is a pair of axially spaced walls whose inner edges closely surround the periphery of the condenser fan such that the dead air space created between the walls tends to prevent the recirculation of air around the fan periphery when the fan is in operation.

Abstract: An air conditioner system in a building comprising a heat exchanger unit disposed below a building floor, a pair of juxtaposed air passages disposed within a hollow sill in heat exchange relationship to an internal conduit for a heat transferring medium and communicating with the outside air through the heat exchanger unit, a fresh air outlet defined in a top wall of the sill and communicating with the heat exchanger unit through one of the air passages, and a room air inlet defined in a side wall of the sill and communicating with the heat exchanger unit through the other air passage. The air conditioner system thus constructed is sightly to view and provides an air circulation for better air conditioning effects and a uniform air temperature distribution in a house interior space.

Abstract: A heat pump and method are presented which includes a compact two-compartment housing in which each compartment contains a condensor-evaporator. The heat pump which has upper and lower compartments which are vertically aligned is installed totally within the interior of a building and air from the attic area of the building is used as a supply while spent air is exhausted below the heat pump and no outside wall space is required for installation. The method of operation includes reversing the refrigerant flow and during the heating cycle condensate from the upper condensor-evaporator is directed to the lower condensor-evaporator to provide humidity to the interior of the building.

Abstract: A through-wall heat pump air conditioner having a total heat exchanger between the interior and exterior unit rooms is disclosed for recovering waste heat from the exhaust air. The conditioner includes two auxiliary dampers respectively provided between the exhaust air path and the heat exchanger and between the intake air path and the heat exchanger, whereby penetration of external air into the room is prevented during the halt state of the air conditioner.