Abstract: A heat pump for building-interior heating purposes comprises an outdoor heat exchanger with which heat is abstracted from air forced exclusively by wind currents through the heat exchanger. The heat exchanger comprises a spatial array of heat exchange elements forming a grid through which the wind-displacement can pass and around which the air is in contact with the elements, the grid being open in all compass directions to the air flow.

Abstract: Apparatus for encasing a heat exchange unit. A wrapper is disclosed having solid portions for structural support of the heat exchange unit and fastening means including closure means formed on each end of the wrapper and a fastener strip which co-acts with said closure means to secure the wrapper in its appropriate position. Louver portions and solid portions of the wrapper are additionally disclosed to provide a structurally sound wrapper having spaced louver openings to allow air flow therethrough.

Abstract: An air-cooled condenser having cooling face areas so configurated as to form two closed or substantially closed nested loops in spaced relation to provide a common inlet air duct between the face areas communicating with an air mover; the cooling air passages through the loops being in generally opposed relation down stream from the common inlet duct. In one embodiment a section of the outer loop is displaceable for servicing the compressor.

Abstract: A fluid pump unit having a pump, a driving motor which may be air-cooled and various system components which require a cooling air stream includes a fan which is located between the motor and the pump approximately at the midpoint of the cooling air flow route. The air flow route is arranged to be as long as possible and is provided with sharp angular bends and sound-deadening barriers to limit noise transmission to the exterior of the housing. Air-cooled system elements are located between the fan and housing exterior to act as noise deadeners and further reduce noise transmission.

Abstract: A water condensate recovery device for use in a refrigeration system. The device comprises a condensate compartment for receiving condensate water therein. A heat transfer conduit is provided in the condensate compartment through which refrigerant fluid from a compressor flows for cooling therein by the condensate water. Aperture means is provided with the condensate compartment to permit escape of vapor caused by evaporation of condensate water therein during heat transfer between the refrigerant fluid in the heat transfer conduit and the condensate water. The condensate compartment permits disposal of the condensate water by evaporation and simultaneously reduces the discharge pressure of the compressor by cooling the refrigerant fluid from the compressor.

Abstract: The cooling system of the present invention directs a cooling mist onto the condenser coils of a conventional refrigerant charged central air conditioning unit. The mist comprises a mixture of tap water and condensate. The condensate is collected from the runoff of evaporation coils. A sensing unit is provided at the condenser coil return conduit for sensing a rise in refrigerant temperature and thereby causing the cooling mist to be directed onto the condenser coils.

Abstract: An outside coil unit for a heat pump is provided which includes a refrigerant coil 16 with a protective grille 26, 28, the vertical edges of the grille being held by posts 30 and 45 which are tilted outwardly at the bottom to accordingly tilt the grille outwardly at the bottom so that ice and frost buildup onthe coil is not impeded in falling off the coil during defrost cycles.

Abstract: An apparatus for reducing the amount of ice buildup on a discharge grill of a heat pump outdoor unit includes an ice ring surrounding a central part of the grill for preventing the formation of ice thereon. The apparatus has a support member disposed within the ice ring and is positioned over a central disc of the grill for supporting an ice disc. The ice disc is mounted upon the support member for preventing the entrance of freezing rain, sleet or the like onto the central area of the grill so as to minimize the formation of ice.

Abstract: A motor mounting arrangement including a ring motor support member secured to the motor. The motor support member has formed integral therewith a plurality of heat dissipating fins for conducting heat away from the motor. Also formed integral with the motor support member are a plurality of arm support elements that are adapted to receive one end portion of cooperating support arms. The other end of the support arms being conveniently secured to a housing wall portion.

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: A refrigerator has a machinery compartment at the bottom for housing a motor-compressor unit and a condenser and has an air inlet opening at the front thereof extending substantially across the width of the compartment. The machinery compartment includes a forward section for receiving the condenser and a duct at the rear portion thereof for receiving the motor-compressor unit. The duct has an air inlet at one end for receiving air from the forward section. The condenser extends generally horizontally from one side wall of the compartment across a substantial portion of the forward section. A drain pan is supported above the condenser for collecting water draining from the interior of the refrigerator. The drain pan additionally functions as a baffle to cause air entering the forward section to flow effectively over the condenser.

Abstract: A household refrigerator having a condenser and a fan for passing air over the condenser. The fan is positioned in a fan orifice of an air channel which is of a construction to reduce the foreign substance in the air-stream and thereby reduce the labor of cleaning the condenser and maintain the efficiency of the condenser at a high value.

Abstract: An improved motor mount assembly for fan motors includes a plurality of flexible cables connecting the end plates of the motor housing with a mounting bracket. The motor mount assembly may be used in combination with a bladed fan or a blower wheel fan. The cables retain the blower motor in proper position while providing sufficient flexibility to damp out vibrations which occur due to the operation of the fan motor. A combination sheet metal air discharge grill and fan motor mount assembly is also disclosed.

Abstract: A refrigeration condenser has the fan and motor supported in depending relation from an inverted, cup-shaped member centered in the top wall opening through which condenser air flows, the cup being supported from the perimeter of the opening in the top wall of the condenser housing by radial spokes having outer ends connected to the housing and extending in a substantially straight line inwardly to connections with the cup, so that the weight of the motor and fan is borne in part at least by tension in the spokes.

Abstract: An air conditioning unit in which a housing is provided having side walls adapted to extend within an opening formed in an exterior wall of a room to be cooled. Air inlet and outlet means are associated with the front wall and rear walls of the housing to circulate room air and ambient air through the unit. A condenser heat exchanger and an evaporator heat exchanger are disposed in the housing in proximity to its rear wall and front wall, respectively, and extend at an angle relative to the latter walls. Ambient air is circulated into the inlet associated with the rear wall, across the condenser heat exchanger and out the outlet associated with the rear wall, and room air is circulated through the inlet associated with the front wall, across the evaporator heat exchanger and out the outlet associated with the front wall.

Abstract: Condenser apparatus for use in air-conditioning and refrigeration systems and comprising a compressor, fan motor, fans and an enclosure having three sides provided by an inverted U-shaped condenser coil unit with its spaced end walls being provided with venturi-defining passages receiving fans which are operative to draw outside air through the passages into the enclosure and to discharge the air through the condenser coil unit.

Abstract: A cooling system for cooling a hot material comprising a cooling chamber, a heat exchanger in the chamber, gas circulating means for forcing a cooling gas within the chamber in a closed circuit that includes cooling contact with the heat exchanger, means for passing the hot material from a source thereof through the heat exchanger and back to the source and means for selectively providing an additional cooling medium to the cooling system such as a flowable cryogen and particularly a cryogen gas.

Abstract: A series of air-cooled, vertical condensing tubes extend upwardly from a horizontal header to which refrigerant vapor is supplied. The vapor flows upwardly from the header through the condensing tubes and forms, on the tubes' internal surfaces, condensate which then flows downwardly into the header and eventually through the header's outlet. With this arrangement, the customary top header is not needed.