Abstract: A self-contained air conditioner which has a body including an outer casing having a louver area, the outer casing and the louver area being molded from resin in one piece, the louver area being made of a plurality of wedge-shaped slats each having a thick base portion.

Abstract: A refrigerator includes a cabinet having an upper compartment to be refrigerated and a lower machinery compartment. First and second elongated support members extend across the front and back of the machinery compartment respectively. A condenser is supported from the first support member and extends rearwardly in the machinery compartment. A support frame is supported from the second support member and extends forwardly in the machinery compartment in partial overlapping relationship with the condenser. The overlapping portions of the condenser and frame are structurally connected. A compressor is mounted on the frame. A condensate collection container is supported from the rear support member and extends forwardly in the machinery compartment in partial overlapping relationship with the condenser. The overlapping portions of the condenser and container are structurally connected.

Abstract: A refrigerator and/or freezer for installation into a row of kitchen units has a door and a recessed base below the door, the recessed base being adapted to accommodate variable heights of the recessed base relative to the floor supporting the refrigerator/freezer and variable amounts of recession relative to the door. A main ventilation channel and two side ventilation channels are defined in the recessed base. The cooling unit is disposed in the recessed base and has compressors, a condenser and a fan for circulating air through the main ventilation channel and the side channels. An adjustable ventilation grille is disposed on the front portion of the ventilation channels by two fixed inner wall sections and two side wall sections movably supported on the fixed inner wall sections. The ventilation grille is mounted so as to be both vertically adjustable in discrete steps on the recessed base, as well as horizontally adjustable to adjust the amount of recession of the base.

Abstract: A compression-type air-conditioning system for a railraod car, intended in particular for a high-speed train, includes a refrigerant compressor, a condenser with tubes in which compressed fluid is cooled by circulation of air around the tubes and is thereafter liquified, an expansion valve supplying a low-temperature refrigerating gas, and an evaporator following the expansion valve. The tubes of the condenser form an oblique bank between a floor of the railroad car and an underframe of the air-conditioning system. The oblique bank enables, on the one hand, the number of the tubes and consequently the cooling capacity of the air-conditioning system to be increased. On the other hand, space is freed up in a vertical direction for fitting damping devices at different fastening points on the condenser. As a result of the invention, there is an improvement in the comfort of passengers, both in terms of air-conditioning and in terms of reducing vibrations. Furthermore, there is a reduction in operating costs.

Abstract: A self-contained ice making machine including a cabinet divided into first and second separate compartments with an ice making head including an evaporator disposed in the first compartment and with a compressor and air cooled condenser disposed in a second compartment. Air from the room surrounding the ice machine is drawn through an air intake in a side of the cabinet and through the condenser into the second compartment by a condenser cooling fan, and a vent pipe having an exhaust fan is connected to an air discharge opening in the top of the second compartment for venting the second compartment outside of the room in which the ice making machine is installed.

Abstract: An automotive air conditioning system according to the present invention includes a heat pump circuit comprising a first heat exchanger and a second heat exchanger. The first heat exchanger provides cooled or heated air to a passenger compartment. The second heat exchanger is provided with an outside air inlet path that conducts outside air to the second heat exchanger. Passenger compartment air is also conducted to the second heat exchanger by an air conducting path. The flow of air from the passenger compartment and the outside is selectively conducted to the second heat exchanger by a damper that responds to air flow demand.

Abstract: An outdoor grill assembly for use in conjuction with an axial fan is disclosed. The assembly has cambered grill elements which increase the fan efficiency and lower the noise level associated with the fan. A grill having mirror image sections of cambered elements also controls recirculation of air from the discharge to the inlet.

Abstract: A stator row is disposed between a propeller fan and a heat exchanger coil, such as the outdoor or condenser coil of a packaged terminal air conditioning unit. The stator row is situated against the heat exchanger coil on the fan facing side. The stator row has a frame that substantially matches the periphery of the coil, a ring disposed coaxially with the hub of the propeller fan, and a suitable number of radial stator vanes that extend from the ring to the frame.

Abstract: A flat air conditioner for railway vehicle for installation on the roof of a vehicle is advantageous from the viewpoint of reducing air resistance to the vehicle and the design of the vehicle. The present invention provides such a vehicular air conditioner incorporating a horizontally longer compressor or compressors disposed with the longitudinal axes in a horizontal plane or disposed in a return air chamber to construct the air conditioner in a flat configuration with a small height and in a compact construction.

Abstract: The apparatus comprises a large, open ended air collector attachment above an external heat exchanger of a standard residential air conditioner, which ducts the exhausted heat exchanger air flow into the attic of a building through a substantially vertically ascending air flow tube. The combination of the fan exhaust pressure together with adiabatic expansion of the warm air rising in the air tube produces sufficient air flow within the attic to pressure ventilate and thereby cool an average household attic, by displacing air trapped within the attic. This, in turn, reduces the heat load into the air-conditioned spaces of the house, by reducing the heat radiated from the attic spaces downward through the ceiling of the housing.

Abstract: A system for the economic and efficient ventilating, cooling and heating of an enclosed space, such as a room or rooms within a building, through controlled ventilation of room air between an upper hotter building portion and a lower cooler building portion with the portions constituting different temperature zones in the building. The system includes a reversible ceiling fan facility and motorized inlets in the lower building portion and motorized outlets in the upper building portion, the inlets and motorized outlets being formed in the building and communicating with the exterior thereof.

Abstract: An improved self-defrosting refrigerator and power module therefore, inlcuding a food storage compartment and a refrigeration compartment adjacent and insulatable from the food storage compartment. A refrigeration system of novel design is mounted within the refrigeration power module which includes a compessor, a condensor coil, and evaporator coil, a defroster heater, circulation means for circulating frigid air through the passageways to cool the storage compartment during the refrigeration cycle and means for collecting and exhausting melted frost from the refrigeration power module, which is configured and adapted to prevent the passage of warm air into the module. A method for constructing the novel refrigeration apparatus and improving its cooling efficiency is also disclosed.

Abstract: A slit fin heat exchanger is formed by wrapping slit fin tubing into a flat coil having two spaced rows of tubing. The flat coil is located on mandrels which are rotatable about spaced parallel axes with the mandrels and axes initially being in the same plane. The mandrels are rotated about their axes in opposite directions which shifts the plane in which the coil is located. The shifting of the plane of the coil moves a portion of a first row of the coil into contact with a planar portion of a platen and the second row of the coil into a nesting relationship with the portion of the first row which is in contact with the planar portion of the platen. Continued rotation of the mandrels causes folding of the portions of the coil which extends the area of nesting. The folding takes place through up to 120.degree. and the ends of the first row of the coil contacts a portion of the platen causing the formation of a knob at the end of each coil.

Abstract: An air conditioner unit that includes a housing containing a heat exchanger and a centrifugal impeller positioined behind the heat exchanger for drawing comfort air over the exchanger surfaces and returning the air to a comfort zone. A support wall is placed between the heat exchanger and the inlet of the impeller and an orifice is mounted in the wall for directing conditioned air into the fan inlet. A cylindrical shield is also mounted upon the wall and surrounds the orifice. The shield is axially aligned with the impeller and its end face positioned adjacent to the inlet face of the impeller. The axial length of the orifice from the wall is less than that of the surrounding shield so that a wide circular throat is established around the entrance region of the impeller. The velocity of air drawn through the gap between the shield and the impeller is thus reduced within the throat to minimize its adverse effect on the primary air flow entering the orifice.

Abstract: An air conditioning system is disclosed in which the air conditioning capacity is stepped to a lower level upon reduced sensible air conditioning demand. The stepped reduction involves both a stepped reduction of blower capacity and a stepped change of the heat exchange fluid flow at the heat exchanger modifying the temperature of the air. Several embodiments are disclosed.

Abstract: According to the invention, a compressible, resilient baffle member is provided and held captive compressibly against a partition wall in a refrigeration apparatus machinery compartment by a resilient retainer clip. The retainer clip straddles the baffle member surface and has legs which terminate in offset free ends which extend into a specially configured aperture in the partition wall. The baffle member biases the offset ends of the clip legs into contact with the surface of the wall opposite to the baffle mounting surface. When the baffle is rotatably displaced the one clip leg slides into the aperture and the opposite leg rotates about an edge of the aperture. The resilience of the baffle member and clip restore the baffle to the original position.

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

Abstract: In a transport refrigeration unit, top and front shutters are controlled to open in sequence upon rising temperatures being sensed by temperature responsive control means located in a recirculation passage between the shutters.

Abstract: A cooling system for use with an engine and an associated engine driven flywheel. The system includes: centrifugal blower means fitted to and rotatable with the flywheel for developing a pressure differential thereacross; a housing enclosing said flywheel and said blower means for defining an air passage having a housing inlet for communicating air to said blower means and an output for permitting the discharge of air therethrough; air cooled heat exchange means connected to and positioned relative to the housing to permit air to flow therethrough by virtue of the operation of the blower means; damper means responsive to at least one engine operating parameter, for controlling the air flow through the heat exchange means; and compartment means for enclosing the blower means and housing and oriented to prohibit the entrance of ram air thereto and including inlet means for receiving non-ram air.

Abstract: An air conditioner comprises a suction grille for sucking air in the room, a heat exchanger placed near and in the rear of said suction grille, an inner casing which is provided with at least two suction inlets, the second inlet being vertically positioned above the first and faces said heat exchanger such that the distance from said heat exchanger to said second suction inlet which is in the lower position is greater than that from said heat exchanger to said first suction inlet which is in the upper position. First and second multiblade type blowers are placed so as to be respectively facing said first and second suction inlets and first and second air passages are provided for feeding air from said first and second blowers into the outlet of said chamber, said second air passage being provided in the rear of the casing of said first blower.

Abstract: An air conducting mechanism for receiving evaporatively cooled air from a source thereof and delivering the evaporatively cooled air to the air inlet face of the condenser coil of a remotely located refrigeration unit.

Abstract: A water chiller and/or air cooled refrigeration unit having an upper compartment in which a fan is mounted, a condenser through which the fan draws cooling air, and, mounted beneath the condenser, other components such as a compressor with drive motor, pump and an evaporator wherein removable covers are provided for said other components, each of the removable covers comprising a generally vertical wall portion of sheet material and integral therewith a roof portion of sheet material which slopes inwardly and upwardly from the upper edge of the generally vertical wall portion, each of the covers co-operating with another similar cover on the opposite side of the unit to provide a complete roof and side walls to enclose other components beneath the condenser and fixing means to retain the covers in position. Two or more of the covers may be provided on each side of the unit.

Abstract: The air-to-air split system or packaged heat pump system is used to heat and cool buildings. In the heating mode it extracts heat from the outside air for space heating. Heating and cooling with this type of heat pump is achieved by reversing the flow of refrigerant through the outdoor and indoor refrigerant coils. In the heating mode the outdoor coil acts as an evaporator and extracts heat from the air, the indoor coil acts as a condensor and gives off heat to the air handling system for the building. The reverse action takes place in the cooling mode. The operation of the reversing valve is controlled by a heating and cooling thermostat inside the building.This invention relates to the use of the described heat pump system in the heating mode in combination with the exhaust system for the building to extract heat from the building exhaust air, which is normally exhausted to the outside air without any heat removal.

Abstract: A combined refrigerated display case and walk-in cooler wherein an improved refrigeration system combines a single air circulation means and two distinct refrigeration units, a first refrigeration unit dispersing refrigerated air for a plurality of air curtains travelling across an access opening provided at the front of the display case portion of the combination, a second refrigeration unit dispersing refrigerated air rearwardly to the walk-in cooler portion of the combination. The front access opening provides unimpeded access to the refrigerated space of the display case. Support means are provided between the walk-in cooler portion and display case portion extending between a lower surface of the refrigeration system and the floor for carrying shelves associated with the refrigerated display case portion of the combination.

Abstract: A heat exchange device for air conditioners and the like comprising a primary body member of sheet plate material having tubular flow conduit fastened thereto for receiving and containing the flow of fluid such as the liquid/gas used with air conditioners and the like. Projecting pins securely attached to the plate member or members in single or double rows alternately with the tubing material provide the heat exchange improvement. Several different embodiments of the tubing and rows of projecting pins are provided for various type of applications. Another embodiment replaces the tubular flow conduit with a second plate member with the refrigerant flow being between the two plate members.

Abstract: A compressor type air cooler is combined with a booster comprising an evaporative air precooler, a refrigerant vapor precooler and a refrigerant liquid cooler. This makes the compressor type cooler usable in localities where the ambient temperature is so high as to prohibit use of the compressor type cooler alone, and saves a notable amount of electrical power at any ambient temperature.

Abstract: A refrigerator machinery compartment air filter for a forced air condenser operative to maintain the proper air flow over the heat transfer surfaces insuring efficient operation. The filter has two sections connected by a flexible hinge allowing for ready insertion and removal from the front of the compartment for ease of cleaning.

Abstract: The present invention provides a twin slab heat exchanger A-frame assembly having a plurality of refrigerant circuits arranged to provide a first and second circuit in each of the heat exchanger slabs. The first circuits in each heat exchanger being connected to provide the evaporator in one refrigerant system with the second circuits in each heat exchanger connected to provide the evaporator of another refrigerant circuit. The first and second circuits being arranged so that one precedes the other in air flow communication relative to air passing through the heat exchanger assembly.

Abstract: A combined refrigerated display case and walk-in cooler wherein an improved refrigeration system combines a single air circulation means and two distinct refrigeration units, a first refrigeration unit dispersing refrigerated air for a plurality of air curtains travelling across an access opening provided at the front of the display case portion of the combination, a second refrigeration unit dispersing refrigerated air rearwardly to the walk-in cooler portion of the combination. The front access opening provides unimpeded access to the refrigerated space of the display case. Support means are provided between the walk-in cooler portion and display case portion extending between a lower surface of the refrigeration system and the floor for carrying shelves associated with the refrigerated display case portion of the combination.

Abstract: This invention relates to a heating system for heating a building in which freezers or coolers with remotely located compressors are used. The system draws cold air from the building and by forcing it through the compressors causes it to be heated. Means are provided for delivering the heated air to the building. Supplemental heating means are also provided to further heat the air in case of particularly severe weather.

Abstract: The invention relates to a system that can provide the refrigeration function of a compression refrigeration system, or by changing the position of some valves in the system, the system can provide a defrost function, or a heating function, or a capacity controlled refrigeration function. To accomplish the defrost or heating function compressed refrigerant is condensed in a heat exchanger that is in heat exchange relationship with a main evaporator and the liquid refrigerant thus formed passes through an expansion valve to an auxiliary evaporator. When the system operates to provide a capacity controlled refrigeration function, the capacity of the main evaporator is controlled by heat of compression from the heat exchanger that is in heat exchange relationship with the main evaporator. The amount of heat from this heat exchanger that counteracts the cooling effect of the main evaporator can be varied by dissipating a variable amount of the heat of compression before it reaches this heat exchanger.

Abstract: A water to air heat pump employing an energy and condensate conservation system in which a heat exchange fluid is circulated between two heat exchangers with one normally operating as a condenser and the other normally operating as an evaporator. The condensate from the air passing over the evaporator coil is collected and is passed to the condenser for circulating over the condenser coil. The heat pump is adapted to operate in a reverse mode in which the functions of the heat exchangers are reversed and in which the circulation of the collected condensate to the condenser is terminated.