A liquid-cooled-type cooling device includes a casing (2) which has a cooling-liquid inlet (11) formed at a rear end portion of the casing and a cooling-liquid outlet (12) formed at a front end portion of the casing. A corrugated fin (17) for forming a plurality of flow channels through which a cooling liquid flows from the rear side toward the front side is disposed within the casing (2) to be located between the cooling-liquid inlet and the cooling-liquid outlet. A heat-generating-body mounting region is provided on an outer surface of a top wall (3) of the casing. Projections (23A, 23B) which come into contact with front and rear end portions of the corrugated fin (17) to thereby position the corrugated fin in the front-rear direction are provided on an inner surface of the bottom wall (4) of the casing at positions shifted, in the left-right direction, from an inner surface region corresponding to the heat-generating-body mounting region.

Liquid-cooled-type cooling device

An arrangement for delivering fluids has a fluid pump (91), which is designed in the manner of a centrifugal pump. Said pump (91) has an impeller (90) that is connected to a first permanent magnet (92), and it has an electronically commutated internal armature motor (70) as the drive. Said motor has a stator (68) within which a rotor (60) having a second permanent magnet (64) is rotatably located. The second permanent magnet (64) works together with the first permanent magnet (92) in the manner of a magnetic clutch (93). The arrangement also has a split case (52) that separates the first permanent magnet (92) of the magnetic clutch (93) located within said split case (52) from the second permanent magnet (64) of the internal armature motor (70) located outside of the split case (52) in a fluid-tight manner. The stator (68) of the internal armature motor (70) is located radially outside the magnetic clutch (93). A first axis (54) located on the outside of the split case (52) serves to rotatably support the rotor (60) of the internal armature motor (70).

Arrangement for delivering fluids

A liquid cooling apparatus for use in a disk array apparatus which contains a plural number of units having a disk drive inside of a housing and disposed within a rack, including an air-blow fan, a pump for transmitting liquid coolant, a radiator for transmitting heat absorbed into the liquid coolant into outside air, and pipes for connection of the pump and radiator. The liquid cooling apparatus further includes a temperature sensor disposed at a position for detecting temperature of the liquid coolant, which temperature changes in response to electric power consumed within the plural number of disk drives, and a rotation speed of the pump is controlled in dependence upon a detection signal from the temperature sensor.

Disk array apparatus and liquid cooling apparatus thereof

This disclosure relates generally to valves, and more particularly, to gas valve assemblies. In one example, a valve leakage test may be performed on a valve assembly including a valve body with a first valve and a second valve, where the valves may be positioned across a fluid path in the valve body with an intermediate volume between the valves. A pressure sensor may be in fluid communication with the intermediate volume and may sense a measure that is related to the pressure in the intermediate volume. The pressure sensor may communicate with a controller to determine a measure that is related to a pressure change in the intermediate volume and compare the measure that is related to a pressure change to a first and/or second threshold value. The controller may output a signal if the measure meets and/or exceeds the first and/or second threshold value.

Gas valve with valve leakage test

This disclosure relates generally to valves, and more particularly, to gas valve assemblies. In one example, a valve assembly may be configured to perform a valve proving test as part of an operational cycle of a combustion appliance coupled to the valve assembly. The valve assembly may include a valve body having a fluid path, first and second valve sealing members translatable between an opened position and a closed position, and one or more pressure sensors in fluid communication with an intermediate volume of the fluid path between the first and second valve sealing members. A valve controller may be in communication with the pressure sensor and may monitor a measure related to a pressure change rate in the intermediate volume. The valve controller may then output a signal if the measure related to a pressure change rate in the intermediate volume meets and/or exceeds a threshold value.

Gas valve with electronic valve proving system

An arrangement, for heat dissipation from a component that is to be cooled, features: a pump for pumping a coolant, which pump comprises a pump rotor; a fan that comprises a fan rotor associated with which is an electric motor to drive it, the pump rotor and the fan rotor being separated from one another in fluid-tight fashion and drivingly connected to one another via a magnetic coupling. It also relates to a method for heat dissipation from a component that is to be cooled, using a fan that comprises a fan rotor and a drive motor, using a pump that comprises a pump rotor, using a coolant that is pumpable by means of the pump, comprising the following steps: A) the fan rotor has a rotational motion imparted to it by means of the drive motor; B) the pump rotor has a rotational motion imparted to it, via the magnetic coupling, by means of the rotational motion of the fan rotor; C) the coolant is caused to flow by the rotational motion of the pump.

Arrangement and method for removing heat from a component which is to be cooled

The invention relates to an arrangement with an electronically commutated external rotor motor (20), comprising an inner stator (22), arranged on a bearing tube (30), separated from an external rotor (26; 92) by a first air gap (24), comprising a rotor bell housing (40), open at one end and connected to a shaft (46) at the other end, mounted in the bearing tube (30), further comprising a permanent magnet arrangement (76), arranged at the open end of the rotor bell housing (40), for interaction with a second permanent magnetic rotor (92), mounted in the arrangement such as to be able to rotate, said permanent magnet arrangement (76) being separated from said second rotor (92) by a second air gap and forming a magnetic coupling (94) therewith, such that a rotation of the permanent magnet arrangement (76) causes a rotation of said second rotor (92). The above also comprises a non-ferromagnetic separating element (82), arranged in the second air gap which separates the second rotor (92) from the external rotor motor (20) in a liquid-tight manner and on which an arrangement for mounting the second rotor (92) and the bearing tube (30), for mounting the shaft (46) of the rotor bell housing (40), are arranged.

Arrangement with an electronically commutated external rotor motor

A fan structure, suitable for rack-mounting adjacent to heat-generating electrical equipment, features an improved noise-damping outflow baffle containing a plurality of non-return flaps, serving to prevent reverse flow of air when fan activity is interrupted. In a preferred embodiment, four generally sickle-shaped flaps are used, each connected, along a straight edge thereof, by a pair of elastomeric hinge connections to a surrounding frame. The hinge connections urge the flaps closed whenever they are not forced by airflow into an open orientation. The axes of rotation of the flaps are chosen to keep them from jamming against one another. Since the flaps act as vanes, tending to straighten out an originally helical flow of air induced by the fan, they minimize the pressure drop which has therefore been associated with outflow baffles. The use or elastomers at critical points in the structure reduce noise and clatter.

Fan with integrated nonreturn flaps

An electronically commuted electric motor comprises an inner stator (18) and an outer rotor (24), separated by an air gap (23). A circuit board (68) provided with recesses (58', 70', 72') is arranged on the inner stator (18). The inner stator (18) has a lamination bundle (22), provided with a winding arrangement (60; 86, 88), the connections of which are at least partly embodied as wire sections (86E, 88E, 90). The lamination bundle (22) of the inner stator (18) is at least partly covered by an insulation layer (20) made from a thermally-stable plastic. Support elements (58; 70, 72) are embodied thereon, extending from the inner stator (18) in the direction of the circuit board (68) which serve for the fixing of the wire sections (86E, 88E, 90) of the winding arrangement (86, 88). Said support elements (58, 70, 72) with the wire sections arranged thereon are each arranged in a corresponding recess (58', 70', 72') of the circuit board (68) and soldered to the same therein.

Siegfried Seidler

Papers

Arrangement for delivering fluids

Arrangement and method for removing heat from a component which is to be cooled

Arrangement with an electronically commutated external rotor motor

Fan with integrated nonreturn flaps

Electronically commuted electric motor and method for production thereof