Abstract: The present invention provides an automotive engine-cooling fan assembly including a motor having a driveshaft defining a central axis, and a fan driven by the motor. The fan includes an inner hub portion coupled to the driveshaft, and an outer hub portion coupled to the inner hub portion. The outer hub portion is coupled to a plurality of radially-extending blades. The fan also includes a plurality of vibration isolation members interconnecting the inner hub portion and the outer hub portion.

Abstract: The present invention provides an automotive engine-cooling fan assembly including a motor having a driveshaft defining a central axis, and a fan driven by the motor. The fan includes an inner hub portion coupled to the driveshaft, and an outer hub portion coupled to the inner hub portion. The outer hub portion is coupled to a plurality of radially-extending blades. The fan also includes a plurality of vibration isolation members interconnecting the inner hub portion and the outer hub portion.

Abstract: A blower motor (10) is accommodated in a housing pot (12) with a fastening flange (14); damping elements are disposed between the blower motor (10) and a fastening region (16). At least one annular dampling element (24, 54, 56, 90) is disposed between the housing pot (12) and a fastening region (16) of the fastening flange (14).

Abstract: In an electric motor with a stator (11) and a rotor (12) that is received rotatably via its rotor shaft (13) in rotor bearings (14, 15), and having an effective decoupling between the stator (11) and rotor bearings (14, 15) for reducing the emission of airborne and structure-borne sound, in order to attain a structurally simple, sturdy design with markedly little motor noise, the rotor bearings (14, 15) are fixed on a housing (10) surrounding and gripping the stator (11), while the decoupling is achieved by a spring-elastic suspension of the stator (11) from the housing (10), and to that end elastic decoupling elements (28) are disposed between the stator (11) and the housing (10) (FIG. 1).

Abstract: The invention is based on a blower having a rotatable gas delivery means (10).

Abstract: A patient monitoring/signal processing module with increased electrical isolation is disclosed. The combination of an inner isolation piece and an isolation film provide signal isolation and electrical over-voltage protection between a lower, isolated portion of the unit defined by a lower housing and the isolation piece and an upper, non-isolated portion of the unit, defined by an upper housing and the isolation piece, increasing the module's ability to survive an over-voltage condition without damage to itself or to the patient to whom it is coupled. The combination of the isolation film and the isolation piece results in a much thinner module than would otherwise have been necessary to achieve the same levels of signal and electrical isolation.

Abstract: A heat exchanger for cooling superheated steam with water, yielding saturated steam. The heat exchanger consists of U-shaped pipes (4) that the superheated steam flows through. The pipes are accommodated in a jacket (1) provided with intakes (10 & 11) and outlets (12 & 13) for the evaporating water. The pipes have their ends secured in a slab of tubes. The slab demarcates a chamber that is separated by a partition into an intake compartment (17) with an intake (14) and an outlet compartment (18) with an outlet (15).

Abstract: A heat exchanger for cooling hot reaction gas with a coolant. It rests on a gas-supply compartment (4) and has gas-conveying pipes (9) inside a jacket (1). It is separated from the gas-supply compartment by a tube sheet (6) that accommodates the gas-conveying pipes (9). The pipes extend loosely through the tube sheet, leaving annular gaps (10) and are connected tightly to the tube sheet on the side where the gas enters. The heat exchanger has at least one line (12) for supplying coolant to the side of the tube sheet that faces away from where the gas enters. The diameter of the tube sheet is shorter than that of the jacket. The tube sheet is connected to the lower edge of the jacket by way of an upward-tapering cone (7). The tube sheet is provided with cooling channels (15) that are open at least at one end and communicate with the lines that supply the coolant.

Abstract: A heat exchanger for cooling cracked gas has a nest of heat-exchange tubes (1) that the gas flows through and that are secured at the ends in bases (2 and 3) and surrounded by a jacket (4) that demarcates in conjunction with the bases a chamber occupied by evaporating water. Each heat-exchange tube has two sections (10 and 11) that differ in diameter and communicate through a cone (12). The section (11) with the longest diameter is at the emerging-gas end of the heat-exchange tube.

Abstract: A heat exchanger, especially for cooling cracked gas, with a nest of tubes secured between two tube plates (2) and with two terminal chambers (4) adjacent to the tube plates and tapering toward a connector (5). The intake-end chamber accommodates inserts. The inserts consist of rods bent into round or polygonal, concentrically positioned rings (7). The rings are positioned away from the tube plate in alignment with the intake-end connector in an area that essentially equals the connector's cross-section.

Abstract: A heat exchanger with a sheaf of heat-exchanging pipes, with a chamber beyond each end of the sheaf, and with an ancillary-flow pipe extending approximately axially through the exchanger and parallel to the heat-exchanging pipes with its upstream and communicating with the entry chamber and its downstream and communicating with a mixing chamber by way of cylinder that has a larger cross-section than the ancillary-flow pipe. A structure for maintaining the medium flowing through the exchanger at a prescribed exit temperature is positioned at the downstream and of the ancilliary-flow pipe.

Abstract: Device for cooling gases deriving from ammonia synthesis. The device consists of pipes accommodated in an interior space. The space is subjected to a heat-absorption medium and surrounded by a cylindrical mantle. The pipes are secured in a pipe floor and communicate with a gas-intake chamber and a gas-outlet chamber. When an ammonia-production plant has several reactors, a single gas-cooling device has up to now been associated with each. The new device is intended to decrease the engineering expenses involved in cooling the gases in such plants. A gas-intake chamber and a gas-outlet chamber is positioned at each of the two opposite ends of the jacket. Straight pipes are associated with each chamber. The pipes are adjacent and the gas flows through them in opposite directions.

Abstract: A nested-tube heat exchanger with tubes that are secured at each end in tube plates, for exchanging heat between materials at very different pressures. The first material, which flows through the tubes is very hot when it enters. One tube plate is thinner than the other and rests on a supporting plate. The supporting plate is fastened to a jacket that surrounds the nest of tubes. Each tube is surrounded by an annular gap where they extend through the supporting plate.

Abstract: A device for cooling a reactor positioned in a vessel. The vessel comprises a water space and a steam space. Cooling pipes that convey evaporating water extend through the reactor. The pipes communicate outside the reactor with the water space at the intake end and with the steam space at the outflow end. The object is to prevent local excess cooling that would interfere with the reaction. A fresh-water preheating section is positioned inside the steam space. The preheating section communicates with an inflow outside the vessel and with an outflow inside the steam space. The preheating section also has open pipes extending through it from top to bottom into the steam space.

Abstract: A bundled-tube heat exchanger of the vertical arrangement type has a gas inlet chamber and a gas outlet chamber. These gas chambers are connected by gas transfer tubes. The gas transfer tubes are surrounded by cooling medium tubes within a housing chamber. Each of the cooling medium tubes opens out into a respective connecting chamber that is formed between the casing chamber, the gas inlet chamber, and the gas outlet chamber. A gas transfer tube that is open to the casing chamber connects the casing chamber to a connecting chamber.

Abstract: A heat exchanger for the cooling of hot gases from the synthesis of ammonia. The heat exchanger has tubes which are bent into U-shape and are arranged within a shell. The tubes are inserted into a tube plate. An exit chamber and an entry chamber are arranged therein for the gases to be cooled adjacent the tube plate. Separating walls are arranged within the shell for the formation of closed preheating chambers and enclose the exit limbs of all tubes. The entry limbs extend within a separated middle space. A preheating chamber and the middle space are provided with separate connections for their own water passage.

Abstract: A tube bundle heat exchanger having an additional tube bottom with insertion tubes arranged in the inlet chamber upon the inlet side of the hot gases for the tubes located between the tube bottoms of the tube bundle. The additional tube bottom is arranged in such a way that both tube bottoms in the inlet chamber define another inlet chamber for colder, slag-free gases, which inlet chamber is accessible through an inlet in the shell of the tube bundle heat exchanger. The insertion tubes project far into, but not to the end of, the tubes of the tube bundle. The insertion tubes, with the outer tubes, form relatively narrow annular spaces suitable for generating high discharge speed. Four spiral formed strips respectively located in the annular spaces impart a twist to the gas flow discharging from the annular spaces to assure that gas discharging between the insertion tubes and the tubes of the tube bundle remain in flowing contact along the inner walls of the tubes.

Abstract: A tube-bundle heat exchanger for cooling a medium having a high inlet temperature. The heat exchanger has an inlet tube bottom and an outlet tube bottom, in which are fastened the ends of tubes which connect the bottoms and through which the medium of high inlet temperature flows. An intermediate tube bottom, having insert tubes arranged concentrically in the tubes, is located in the inlet chamber, with these insert tubes projecting out on both sides from the tubes and forming annular spaces therewith. Toward the inlet chamber, the annular spaces open into an intermediate chamber limited by the inlet tube bottom and the intermediate tube bottom; in the opposite direction, the annular spaces open into a deflecting or reversing chamber sealingly covering the insert tubes.