Abstract: A shell and tube type heat exchanger having one or more intermediate baffles through which the tubes pass, with the tubes being secured at the baffles to prevent or reduce the probability of potentially damaging vibrations. Each baffle comprises a plurality of parallel plates placed closely adjacent each other or sandwiched together and having clearance holes through which the tubes pass. Individual plates of a baffle are offset in different directions and secured in the offset position to secure the tubes by the opposing engagement of the edges of their clearance holes.

Abstract: A damper assembly for controlling the flow of fluid through a passageway is disclosed. The damper assembly comprises a rectangular frame (22) adapted to be fitted in a passageway. A plurality of damper blades (24) are supported for pivotal motion in the frame (22) about spaced, parallel longitudinal axes (26) between opened and closed position. The blades (24) are operatively interconnected by a linkage mechanism (28) so as to be substantially simultaneously rotated as required. Operative means including a drive shaft (30) suitably attached to one or more of the blades (24) is provided for rotating the blades between opened and closed positions.

Abstract: Embossed patterns on fins for the tubes of a shell and tube type heat exchanger for increased efficiency and heat transfer rate, with minimum additional pressure drop. The fins extend transversely across most of the tubes in the tube bundle and have apertures through which the tubes pass. The embossed patterns, which have a "bow tie" configuration are spaced between adjacent tubes and have a generally convex or concave shape with respect to the planar surface of the fin. Each embossed area has a crest and a pair of opposite sides which slope from the crest down to the planar fin surface, and a pair of opposite arcuately shaped sides which slope from the crest to the planar fin surface, and which have arcs that conform to the arcs of the adjacent tubes. An array of such embossed areas are provided on the fin, and a plurality of fins are placed side by side in the heat exchanger to provide a large surface area for fluid contact.

Abstract: A cabinet for a vertical room air conditioning unit includes an upper section and a separate lower section having substantially similar cross-sectional dimensions to permit mating of adjacent ends when the upper section is stacked upon the lower section in a use position. Securing means, including tabs and screws hold the sections together in the use position, and the upper section acts as a plenum or air duct for the unit. For shipment or storage, the upper section telescopes down onto the lower section, and after having been rotated 90 degrees in the preferred embodiment, to form a compact space saving package.

Abstract: An ice cube making apparatus and method characterized by minimum excess meltage of the ice and minimum energy usage is disclosed. According to the apparatus a plurality of generally flat metalic tubes and interconnecting return bends form a serpentine evaporator path. A jacket member encloses the evaporator member to provide ice cube forming sites on both sides thereof. The jacket has internal passageways and external sites cooled by the evaporator member for forming ice cubes and includes a plurality of intersecting ridge portions whose inner surfaces form portions of the internal passageways and whose outer surfaces form the side walls for the sites for forming the ice cubes. The jacket may be made of flexible plastic material so that the filling of the jacket with water during a harvest mode causes flexing thereof to help to dislodge the ice cubes. Alternatively, the jacket is constructed of a pair of rigid plastic members which may be sandwiched together with the evaporator member inside.