Abstract: An air conditioning unit, representatively an outdoor condensing unit, is provided with a vertically oriented fin/tube coil portion through which a fan inwardly draws ambient air in a generally horizontal direction. The coil has a non-uniform fin arrangement that provides a bottom portion of the coil with an effective fin density lower than that of an upper portion of the coil.

Abstract: A compact cooling system including a radial fan directing air flow outwardly and a plurality of heat exchangers disposed around the radial fan. Each heat exchanger has a plurality of tubes extending between an inlet header and an outlet header, with the headers extending generally in the same direction as the fan axis. A system inlet is connected to the inlet headers and a system outlet is connected to the outlet headers, whereby the length of the connection between each heat exchanger and the system outlet and system inlet is generally the same for each heat exchanger.

Abstract: The present invention relates to a heat sink. More particularly, the present invention relates to a heat sink used for radiating heat from an integrated circuit package such as a micro-processor arranged in a portable type electronic apparatus such as a notebook type personal computer and also used for radiating heat from a hard disk unit used in an electronic apparatus. The heat sink comprises: a heat transmitting member for transmitting heat generated by a heating component; a holding section for holding the heat transmitting member; and a heat sink body having a space in which a cooling fan having at least blades and a drive motor is embedded, wherein a portion of the holding section for holding the heat transmitting member, the portion being located below the space, is cut out.

Abstract: A CPU heat sink mounting structure includes a cylindrical heat sink having a coupling portion at one end, a retaining plate coupled to the coupling portion of the cylindrical heat sink, the retaining plate having four equiangularly spaced oblong holes, two first hook holes disposed at one side and hooked on respective hooks of the CPU holder at one side, and a locking lever pivoted thereto at an opposite side and turned to lock/unlock the retaining plate and the CPU holder, a holding down plate coupled to the coupling portion of the cylindrical heat sink and retained between the retaining plate and the CPU holder and rotated through an angle relative to the retaining plate to hold down the cylindrical heat sink.

Abstract: A ceiling panel structure (10; 310) is mounted on a ceiling surface (201) at a downstream of an air-outlet (211) of a ceiling-mounted air-conditioning apparatus (indoor unit) (200) having an air-inlet (210) at a central portion and the conditioning air-outlet (211) at a peripheral portion to minimize the smudging of the ceiling surface and is applicable even to the pre-mounted or existing air-conditioning apparatus. The ceiling panel structure (10; 310) is adapted to be mounted on the ceiling surface (201) at an outside of the air-conditioning apparatus (200) and has a deflection induction portion (47; 347) substantially rigid against the airflow to deflect a part (S1, S2) of the conditioning air, having been blown out through the air-outlet (211) of the air-conditioning apparatus (200), back to the room air-inlet (210).

Abstract: A containment (5) for a heat producing device has cooling fins (15) to dissipate the produced heat. In this type of cooling fin arrangement the cooling fins comprise, traditionally, smooth outer surfaces (17) so that in a boundary layer (18) the flow pattern of the cooling fluid along the cooling fins is laminar.

Abstract: Folded fin heat sinks are provided to inhibit thermal deterioration in the performance of devices. An exemplary heat sink includes a sheet creased in an accordion fold to form a plurality of fins. The plurality of fins is modified to form a plurality of openings. An exemplary method includes forming the fin from a sheet that has been modified to form a plurality of openings. Given the openings, over fifty percent of the fin structure is receptive to an introduced convection medium.

Abstract: The heat exchanger is particularly for ovens for food cooking comprising a radial fan, and is associated with a burner supplied by a blower. The heat exchanger has a first part of pipe into which the combustion gases are made to flow, which makes an almost-complete circuit of the radial fan before bifurcating into at least two pipes which extend around the radial fan.

Abstract: The present invention relates to a heat sink. More particularly, the present invention relates to a heat sink used for radiating heat from an integrated circuit package such as a micro-processor arranged in a portable type electronic apparatus such as a notebook type personal computer and also used for radiating heat from a hard disk unit used in an electronic apparatus. The heat sink comprises: a heat transmitting member for transmitting heat generated by a heating component; a holding section for holding the heat transmitting member; and a heat sink body having a space in which a cooling fan having at least blades and a drive motor is embedded, wherein a portion of the holding section for holding the heat transmitting member, the portion being located below the space, is cut out.

Abstract: An automotive air-conditioner unit which is thin and suitable for use as a rear seat unit is composed of a blower unit with a centrifugal fan and a scroll casing, heat-exchanges for cooling and heating, and conditioned air outlets, all contained in an air-conditioner case. A backward centrifugal fan having a large blade angle is used in combination with a scroll casing having a small scroll angle to obtain high fan efficiency in the compact air-conditioner unit. An outlet duct requiring a higher volume of conditioned air is positioned closer to a scroll-starting position of the scroll casing than another outlet duct requiring a less volume. An air passage in the air-conditioner case is formed along a surface perpendicular to a rotational axis of the fan to reduce a pressure loss in the passage.

Abstract: A ceiling mounted apparatus draws air upwardly through an inlet and processes the air through heat exchange elements before distributing the air downwardly. The air is preferably distributed downwardly by air discharge structure surrounding the heat exchange elements. The air is ultimately discharged through one or more air discharge ducts positioned relatively close to the air inlet. Each air discharge duct includes a rotatable louver mounted therein that in conjunction with the walls of the duct defines particular paths for the conditioned air in heating versus cooling.

Abstract: To reduce noise caused by exhausted cooling air as well as to maintain a necessary amount of cooling air of a cooling fan. A cooling fan is positioned behind a radiator. A shroud surrounds an impeller coupled to a motor and a rotating shaft. The shroud has an inlet and an outlet in the shape of a bell mouth. The bell mouth shaped inlet has its front edge spaced from the rear surface of the radiator by a clearance D, and forms a space around its front peripheral edge. A space is formed via the space, and opens around the periphery of the shroud. The ratio A:B is 1:3 to 5, preferably approximately 1:4, where A denotes a difference between maximum and minimum diameters of the bell mouth shaped outlet of the shroud, and B notes a length of the shroud.

Abstract: To reduce noise caused by exhausted cooling air as well as to maintain a necessary amount of cooling air of a cooling fan. A cooling fan is positioned behind a radiator. A shroud surrounds an impeller coupled to a motor and a rotating shaft. The shroud has an inlet and an outlet in the shape of a bell mouth. The bell mouth shaped inlet has its front edge spaced from the rear surface of the radiator by a clearance D, and forms a space around its front peripheral edge. A space is formed via the space, and opens around the periphery of the shroud. The ratio A:B is 1:3 to 5, preferably approximately 1:4, where A denotes a difference between maximum and minimum diameters of the bell mouth shaped outlet of the shroud, and B notes a length of the shroud.

Abstract: Apparatus for controlling the return air flow to the evaporator coil of an air conditioning unit that is mounted on the roof of a vehicle wherein the return air flow enters the unit vertically and must be turned 90.degree. in a limited amount of space before being delivered to the coil. A plenum is mounted over the return air duct that has a back wall containing an arcuate segment that curves inwardly over the entrance toward the entrance face of the coil. A stabilizer is mounted along the inner edge of the entrance in front of the coil which coacts with the contoured rear wall of the plenum to evenly distribute the return flow across the coil and prevent unwanted turbulence in the flow that would inhibit flow through the coil.

Abstract: A fan assisted heat sink cooling device is disclosed in which the heat sink assembly also forms the housing surrounding the fan. The housing is constructed of a plurality of cooling vanes which have elongated openings therebetween allowing air to pass between and cool the vanes. The vanes are angled in an approximately opposite manner to the orientation of the fan blades in order to minimize the noise generated by the cooling device when in operation. The cooling device operates in an extremely efficient manner by causing air to pass over the cooling vanes twice.

Abstract: A fan with heat sink comprises a plurality of closely spaced sheet metal fins closely proximate to the blade tips of an axial flow fan. The high velocity air and blade tip vortices cooperate to provide exceptional heat transfer. The metal fins are retained in a fan duct comprising a metal cylinder under high force for good heat transfer. In one embodiment of the invention, the fins are formed with a conical displacement, lessening their diameter, and are flattened and spread in the fan duct, to have high contact pressure for good heat flow. In another embodiment of the invention, the heat sink fins are formed from strip, for very low scrap, and are wrapped around reinforcing rings so that they may be installed in the fan duct with high force for good thermal contact. In another embodiment of the invention, the fan duct comprises a plurality of posts rising from a cold plate, and the heat sink fins are pressed thereon with high force.

Abstract: A wire retainer for use in an air conditioning outdoor cabinet which houses a fan and a spine fin heat exchanger coil includes an extension portion, a base portion and a clip portion. The extension portion of the wire retainer is anchor-like and includes fluke-like members that, when inserted into and through spine fin material, lodge securely therein. The base portion of the retainer abuts the spine fin of the heat exchanger coil and positions the clip portion such that wires or a wire bundle running interior of the coil can be guided and secured appropriately so as not to be cut by the fan or buffeted and broken by the relatively high velocity, high volume stream of air that is drawn by the fan through the interior of the air conditioning cabinet and the heat exchanger coil housed therein.

Abstract: A refrigerator for improving a cooling efficiency. The refrigerator has a cabinet having a refrigerating chamber, a freezing chamber, and an evaporator chamber which is disposed at a rear portion of the freezing chamber, an evaporators which generates a chilled air and has a helical shape forming a conical space portion therein, a blower assembly coaxially disposed at a rear of the evaporator so as to blow an air towards the evaporator, and a heater installed in the conical space portion of the evaporator so as to remove a frost adhering to the evaporator. The refrigerator can effectively make a heat-exchange between the evaporator and the air so that the cooling efficiency is improved. Since the turbulent air flow is introduced into the freezing chamber, the freezing chamber can be uniformly cooled and since the heater is coaxially disposed in the evaporator, the heater can uniformly heat the evaporator, so the defrosting a frost from the evaporator is effectively carried out.

Abstract: An active heat sink is described for use in the transfer of heat from a heat generating device such as a semiconductor chip and the like with a heat sink having an embedded fan surrounded by a plurality of heat conducting flow augmenting rings separated by apertures through which a radially inward flow arises and with the rings being sufficiently axially separated to enable fan propeller tip vortices to penetrate the axial spacings so as to cause a substantial cooling of annular ring regions so as to raise the overall heat transfer coefficient of the active heat sink in a significant manner. Several embodiments are described.

Abstract: The invention is of a new design for a room air conditioner. An air conditioner according to the present design will emit a substantially lower operating noise level than units of comparable cooling capacity and energy consumption. Additionally, the present design prescribes a coil design which requires approximately one-third less aluminum and copper than similarly performing room air conditioner units. The benefits of the present design arise from its reliance on a single row, wrap-around coil design which is used in conjunction with a tangential blower assembly. The single row evaporator coil of the present invention inherently produces less "wind noise" than multiple row coils.

Abstract: A dehumidifier for use in a bathroom or the like utilizes the cold surface of a heat exchanger to condense moisture, and the hot surface of a heat exchanger to warm the air after the moisture is removed. The cold surface is provided by having the cold water supplied to the room pass through the cold heat exchanger; and, the hot surface is provided by having the hot water supplied to the room head pass through the hot heat exchanger. The heat exchangers may be concentric circles, so a recirculation fan centrally of the heat exchangers will move air across the two, or may be rectangular with a plenum at each end so air moves across the two. A drip pan beneath the cold heat exchanger catches the condensate. The circular heat exchangers may be less than a full circle, and a light housed in the space defined. Also, an exhaust fan may be mounted concentrically with the recirculation fan in the circular heat exchanger, or may be mounted in the output plenum of the rectangular device.

Abstract: In an air conditioner in which plural outdoor units are connected to plural indoor units, at least one outdoor unit is provided with a compressor having a power control mechanism for inhibiting a part of a compression work, and the power of the compressor is made variable by controlling the power control mechanism. The outdoor unit is provided with two heat exchangers which are designed in a substantially U-shaped form, and disposed in a main body of the outdoor unit so that the opening sides thereof are confronted to each other, and the refrigerating elements which constitutes a refrigerant circuit and contains at least the compressor, an accumulator, etc. are disposed in a space which is surrounded by the two heat exchangers.

Abstract: A cooling system for a vehicle. The cooling system has a radiator and a fan that draws cooling air through the radiator. The fan is recessed into the radiator such that the motor is substantially cooled by air that has not passed through said radiator. The radiator may be an interconnected spaced-apart bi-sectional radiator with the fan interposed therebetween, the radiator being shaped so as to feed air through the fan. The cooling system may have a variable speed pump at the outlet to the radiator.

Abstract: A cooling apparatus for use in a cooling system. The cooling apparatus has many evaporators disposed transversely to a longitudinal direction of a cool air duct. The refrigerant is supplied respectively to the evaporators by a valve device. Each evaporator has a conductive pipe which is wound spirally. Many blowers are disposed to each of the evaporators respectively. The diameter of wound part of the conductive pipe increases gradually along the circulating direction of the cool air, so the evaporators substantially have cone-shapes. Many defrosting heaters are disposed coaxially with the conductive pipes respectively. Since the evaporators are controlled respectively, at least one evaporator is operated during the defrosting operation of other evaporators, so the cooling efficiency is increased. Also, the heat exchange is performed uniformly on the entire areas of the evaporators by the spirally wound conductive pipes, the cooling apparatus has high efficiency of cooling.

Abstract: A cooling apparatus for use in a cooling system. The cooling apparatus comprises an evaporator having a conductive pipe which is wound spirally along a cool air duct, and a blower for providing a cooling compartment with cool air generated from the evaporator by blowing toward the evaporator. The diameter of the wound portion of the conductive pipe increases gradually along the circulating direction of the cool air, so the evaporator substantially has a cone-shape. In the cone-shaped space, a defrosting heater is disposed coaxially with the conductive pipe. Since the heat exchange is performed uniformly on the entire area of the evaporator by the spirally wound conductive pipe, the cooling apparatus has high efficiency of cooling, and since frost is generated on the evaporator without maldistribution thereby, the period for defrosting operation becomes longer so that the cooling efficiency is more improved.

Abstract: A water purification apparatus positionable on an existing dispenser has a valve control member positionable in the water plenum of the dispenser to control release of purified water from the apparatus to the dispenser. A feedwater tank receives supply water which is fed to a water level control tank to maintain the water level in the boiler of the apparatus above the heating element. The control tank includes a partition separating a main reservoir from a de-foamer control chamber within which anti-foaming agent may be added. A condenser is coiled into a number of convolutions about a central opening and has external heat exchanger fins. An end cap assembly closes the central opening except for a small portion through which air is blown by a fan so that substantially all of the air flows over the fins. The boiler is a cylindrical container having a peripheral lip about an open end on which a lid having a steam outlet tube is positioned.

Abstract: A heat exchanger of the plate fin and tube type which comprises two longitudinally extending sections. The two sections each have a planar cross section and form a continuous length. The sections are bent relative to one another with the planar cross sections of the two sections forming an angular relationship therebetween in two different planes. In a preferred embodiment, a further bend is made thereby forming a third longitudinally extending section.

Abstract: A stamped and formed heat sink has a thermally conductive body including a base having a face adapted for attachment to an electronic device package. Stamped and formed heat dissipation elements extend from the edges of the base perpendicular to the base. The heat sink is formed in a progressive punch and die press so that a heat sink is produced on every stroke.

Abstract: An indoor heat exchange unit and method of making same characterized by an arcuate coil shape heat exchange unit made by bending a single tubing row, planar heat exchange unit to fit within a limited space with an open inlet at one end and blocked at the other end so as to force air to flow past the coil and transfer heat through the fins and tubes of the coil in the process. Also disclosed are preferred embodiments in which an air circulation fan circulates air and where a thermostat controls the flow of heat exchange fluid through the coil as the air is passed through the arcuate coil to obtain a predetermined temperature, or the like, in the air.

Abstract: A low profile fan body for cooling an electronic component has a fan frame supporting a fan, which is mounted on a fan base forming a heat sink or heat transfer body. The fan has plurality of fan blades received within a plenum chamber defined within the heat sink. Each fan blade defines a first axial edge, a second axial edge on a substantially opposite side of the blade relative to the first axial edge, and a radial edge extending between the first and second axial edges. The heat sink defines a base portion for engaging an exposed surface of the electronic component, and a plurality of heat fins spaced relative to each other along the periphery of the sink and defining the plenum chamber. A pressure differential surface is disposed between the radial edges of the fan blades and the fins for directing air flow in the axial direction of the fan.

Abstract: A heat exchanger includes an annular body having a central cylindrical volume having an inlet for one fluid at opposite ends; a plurality of peripherally located first fluid inlets communicate with first fluid passages in the body which passages curve arcuately outwardly to respective separate outlets on the exterior wall of the body; another set of passages for another fluid extend axially from one end of the body to the opposite end between oppositely located plenum chambers; the another set of passages are interposed between the first fluid passages.

Abstract: Heat transfer from the inside of a fan duct to the air is very good because the air in this region has a high velocity and is turbulent due to the rotation of the fan blades. Devices mounted on the outside of the fan duct can thus be cooled effectively. The inside surface of the duct can be modified to enhance the heat transfer as by grooving it deeply. The fan blade also can be modified to increase the air velocity and the turbulence. External fins can be added to the fan duct, and it can be shrouded so that a portion of the exit air passes through the fins back to the inlet. This decreases the mass of the exit air, for quieter operation.

Abstract: Heat transfer from the inside of a fan duct to the air is very good because the air in this region has a high velocity and is turbulent due to the rotation of the fan blades. Devices mounted on the outside of the fan duct can thus be cooled effectively. The inside surface of the duct can be modified to enhance the heat transfer as by grooving it deeply. The fan blade also can be modified to increase the air velocity and the turbulence. External fins can be added to the fan duct, and it can be shrouded so that a portion of the exit air passes through the fins back to the inlet. This decreases the mass of the exit air, for quieter operation. In a multi-stage fan, inlet, outlet and interstage fins can be used to further enhance the heat flow to the air.

Abstract: A heat exchange apparatus comprising a heat transfer member; and at least one projecting blade which is arranged to confront the heat transfer member, and which carries out relative motion with respect to the heat transfer member; wherein a distance between the edge of the projecting blade at the side of the heat transfer member and a heat transfer surface of the heat transfer member is smaller than a value which corresponds to a rising point where an upward gradient of convective heat transfer coefficients rises as the distance decreases.

Abstract: An electric space heater includes a hemispherical enclosure in which is positioned a blower arranged to draw air in through air inlets proximate the pole of the hemisphere for discharge through a plurality of air discharge outlets around the circumference of the enclosure. A filter between the inlets and blower filters the air and electric heating elements are provided for heating the air prior to discharge through the circumferential outlets. The enclosure is fastened to a base lying entirely within the periphery of the enclosure and supporting the blower and heating elements by a single fastener at the pole of the hemipshere with the filter captured between the enclosure and the internal parts of the heater supported on the base. The heater can be affixed to a surface by a mount attachable to the surface and having a threaded fastener engageable with a cooperating threaded member secured in a recess in the bottom of the base. The enclosure may be provided with wheels at its lower perimeter.

Abstract: A curved heat exchanger for a vehicle has tubes generally sector shaped in cross section and arranged in an arcuate pattern to transmit heat exchanger fluid between laterally spaced tanks. One embodiment has discrete heat exchanger fluid sections respectively connected to a vehicle engine, torque converter transmission and between the air conditioner compressor and evaporator. The tubes are tilted to align air passages therebetween with the radial direction of air flow discharged from an interior fan so that there is improved fan-heat exchanger matching resulting in reduced separation of air from the surfaces of the heat exchanger tubes and turbulence in the air passages. The side walls of adjacent tubes are equally spaced from one another to receive standard width air centers therebetween. The tubes may have discrete inner and outer flow sections insulated from one another and respectively employed to conduct engine coolant and another heat exchanger fluid such as for the air conditioning system.

Abstract: A filter system for protecting a heat exchange coil from corrosive constituents carried by an air stream which is passed through the heat exchange coil includes a flexible filter for removing the corrosive constituents from the air stream prior to its engaging with the coil. A net like spacer is located between the coil and the flexible filter for supporting the flexible filter in a predetermined spaced relationship with the heat exchange coil.

Abstract: A heat exchanger for fluids is disclosed having a support assembly for the coil bundle which comprises two vertically spaced-apart support members between which the coil bundle of the exchanger is positioned. The bundle comprises a plurality of vertically spaced tubes each having a number of convolutions which slope upwardly and proceed outwardly to form the bundle. A bridge member having spaced-apart scalloped portions is provided which separate the convolutions of each tube to permit air and water to circulate therebetween. The support members have means for varying the slope of the bridge members depending on the nature of the fluid entering the exchanger.

Abstract: Circular heat exchangers have been used to increase the efficiency of engines by absorbing heat from the exhaust gas and transferring a portion of the exhaust heat to the intake air. The present heat exchanger is built to be more efficient, to better resist the internal forces and pressures and to better withstand the thermal stress from the cyclic operation of the engine. The core has a plurality of heat recipient passages therein which have a uniform cross-sectional area throughout the entire length of the passage. And the core further has a plurality of heat donor passages therein which have a uniform cross-sectional area throughout the entire length of the passage.

Abstract: A cooling system for condensing the exhaust steam of steam turbine plants, particularly of power plants, comprises a mixing condenser connected to the outflow of the steam turbine, a dry cooling tower connected to the cooling water circuit of the mixing condenser, and a wet cooling apparatus provided inside the cooling tower.Although wet cooling apparatus seem to be suitable to additionally increase the cooling performance of the cooling tower and, thereby, its effective operation even in case of exceptionally high ambient temperatures, the air exiting from them is cooler than the air flowing in through the main heat exchangers of the cooling tower and, therefore, the draft of the latter suffers deterioration when the two air streams mix one with the other. It means that the effectiveness of complementary cooling is may be impaired.

Abstract: A heat exchanger is disclosed comprising a pair of laterally spaced fluid conducting tanks operatively interconnected by a plurality of elongated fluid conducting tubes having sector shaped cross sections and arcuately spaced from one another in a circular pattern to present parallel interfacing sides. A plurality of elongated corrugated fins or air centers each having convolutions of substantially constant height and width to have spaced lines of contact along the width and length of each of the sides of the tubes for maximizing heat transfer and so that the tubes will be optimally supported to provide increased resistance to pressure ballooning and burst. These air centers are standard corrugated rectilinear components that reduce complexity and cost of this circular heat exchanger. This heat exchanger can be arranged in a parallel relationship with a transverse automotive engine and a cooling fan operatively mounted within the heat exchanger can be directly driven by the engine.

Abstract: A space heater is mounted to a ceiling fan in close proximity to the housing of the fan motor. The housing is protected from heated air by an insulated, frusto-conical in configuration shield member. An elongate, flexible heating element is helically wound about the shield member. When the fan and heating element are operated at the same time, rotation of the fan blades causes the heated air to travel toward the ceiling at an angle determined by the frusto-conical configuration of the shield member. A cowling hides the heating elements from the view of occupants of an enclosed space within which the ceiling fan is mounted. The cowling is suitably apertured to allow air to circulate in contact with the heating element. Unheated air flows into the open lower end of the hollow shield member to cool the fan motor. A coupling member enables facile removal of the heater and further enables facile installation of a light kit when the heater is not is use.

Abstract: A fan orifice structure and cover intended for use in conjunction with the outside enclosure, usually containing the outside heat exchanger and compressor, of an air conditioning system. The orifice features relatively complex contours that enhance fan efficiency and reduce radiated noise. The cover in which the orifice structure is incorporated can include a plurality of fan motor support brackets and a motor mount. The orificed cover is intended for fabrication from plastic materials by a molding process to minimize cost and weight, maximize strength and durability and to present an aesthetically pleasing appearance. The entire assembly can be molded into a single piece unit.

Abstract: Circular heat exchangers have been used to increase the efficiency of engines by absorbing heat from the exhaust gases and transferring a portion of the exhaust heat to the intake air. The present heat exchanger is built to better seal the cooler recipient fluid from the heated recipient fluid and the donor fluid within the operation of the heat exchanger. The circular heat exchanger is also easily removable from the engine should repair or servicing be required. The manifold is interwoven between the inlet ports and the outlet ports and sealingly separates the cool recipient fluid from the heated recipient fluid. The tongue and groove compensates for the expansion and contraction of the core due to the thermal variations imputed by exhaust from the engine and compensate for such thermal variations.

Abstract: A heat exchanger is provided which a generally planar heat exchanger element is bent about a central axis into a generally cylindrical shape. Brackets are attached to each of two end surfaces of the heat exchanger element. The brackets each comprise first, second and third portions which cooperate with each other to form an interlocking association that maintains the end portions of the heat exchanger in a preselected relationship. The third portions of the two brackets are each bent at a preselected angle relative to the second portion of the associated bracket. Each of the third portions of the two brackets are shaped to receive the third portion of the other bracket in an interlocking manner that is self attaching and self holding. By compressing the diameter of the generally cylindrical heat exchanger from its relaxed shape, with a corresponding decrease in the effective diameter of the heat exchanger, the third portions of the brackets are caused to move toward and past each other.

Abstract: A heat exchanger for an air heating and cooling apparatus includes a plurality of exteriorly-finless hollow refrigerant-carrying stainless steel spirally wound coils being of flattened oval shape in cross-section and a plurality of angularly-spaced criss-cross grid-forming structures for supporting the coils in spaced-apart relation and aligned in columns and rows in a stack thereof for permitting passage of external air flow across and between the coils. The spirally wound coils are supported by the grid structures to have an annular-shaped configuration defining an open interior in the coil stack core.

Abstract: An indoor heat exchange unit and method of making same characterized by an arcuate coil shape heat exchange unit made by bending a planar heat exchange unit to fit within a limited space with an open inlet at one end and blocked at the other end so as to force air to flow past the coil and transfer heat through the fins and tubes of the coil in the process. Also disclosed are preferred embodiments in which an air circulation fan circulates air and where a thermostat controls the flow of heat exchange fluid through the coil as the air is passed through the arcuate coil to obtain a predetermined temperature, or the like, in the air.

Abstract: A wire raceway member, for containing the wires which extend between a fan motor and its separate control module, is formed of a lower U-shaped portion and an upper expandable portion. An opening in the expandable portion is normally smaller than the diameter of the wires to be contained but, when temporarily expanded, the width is wider than the diameter of the wires so as to enable the insertion of the wires into the slot. The ends of the raceway have integrally formed members that are attachable to the motor and to the orifice ring, respectively, without fasteners. A radially extending portion of the grille cover is aligned with the top slot of the raceway member so as to thereby act as a cover to prevent the inflow of moisture into the raceway member.

Abstract: A cylindrical heat exchange or radiator, one end of the cylinder being provided with a pair of concentric manifolds. A water inlet is connected to one manifold and a water outlet is connected to the other manifold. The manifolds are connected to a plurality of longitudinally extending heat exchange members and each member is provided with a water flow path therein so that water flows from one manifold through the flow path to the next manifold. The other end of the cylinder is connected to a fan to cause air to flow over the members and out through an opening adjacent the two manifolds.

Abstract: An outdoor heat exchanger coil has a fan on one side thereof for forcing ambient air through the coil and a partition on the other side thereof. The partition is placed relatively close to the coil to thereby define a channel which allows the flow of ambient air therethrough without any substantial decrease in system capacity or airflow. A comparison between the channel width and the channel length is made to define the limits of minimal separation between the coil and the partition.