摘要:
An improvement in apparatus for cleaning heat exchanger tubes wherein each tube has chambers at its opposite ends for capturing a tube cleaning element, such as a brush, which is adapted to move in opposite directions through the tube upon reversing the direction of flow of heat exchange fluid therethrough. The improvement comprises apparatus for detachably mounting the chambers to the ends of the respective tubes including a holder plate having openings formed therethrough at locations corresponding to locations of the ends of the heat exchanger tubes.
摘要:
A highly accurate compound-eye unit is provided, which can assemble a compound-eye lens member to a lens holder with high positional accuracy even when using the compound-eye lens member that is unsatisfactory in dimensional accuracy of an external shape. A highly accurate compound-eye unit is provided, which can assemble a light shielding member having a plurality of apertures with high positional accuracy. A distance W2 between centers of apertures AP2, AP3 is smaller than a distance W1 between optical axes of convex lens units PL2, PL3, and hence, as illustrated in FIG. 13, when a lens member IM3 is made to approach a lens holder LH along an optical-axis direction, optical surfaces or external portions of peripheral surfaces of convex lens units PL2, PL3 abut on edge portions of the apertures AP2, AP3 at two points P, Q, and a flat surface FP abuts on an abutting portion CT. At this time, the flat surface FP abuts on the abutting portion CT, whereby the lens member IM3 and the lens holder LH are positioned in the optical-axis direction. On the other hand, the optical surfaces or the peripheral surfaces of the convex lens units PL2, PL3 abut on the apertures AP2, AP3, thereby attaining the positioning in an optical-axis orthogonal direction and the positioning around a Z-axis.
摘要:
An absorption heat pump, including: an evaporator which takes in a first heat source and evaporates refrigerant liquid into refrigerant vapor; an absorber which has a heat receiving medium passage and which takes in heat receiving medium liquid through a heat receiving medium inlet of the heat receiving medium passage, heats the heat receiving medium liquid with the heat of absorption generated when the refrigerant vapor generated in the evaporator is absorbed into solution, and discharges the heat receiving medium in the form of vapor or mixture of vapor and liquid through a heat receiving medium outlet of the heat receiving medium passage; a generator which takes in a second heat source and evaporates the refrigerant from the solution having absorbed the refrigerant vapor; and a condenser which takes in a cooling source and the refrigerant vapor generated in the generator to condense the refrigerant vapor.
摘要:
A triple effect absorption refrigerating machine comprising a high temperature regenerator GH, an intermediate temperature regenerator GM, a low temperature regenerator GL, a condenser C, an absorber A, an evaporator E, an auxiliary regenerator GX and an auxiliary absorber AX, either one of several combinations of paths for guiding a refrigerant among the components, thereby enabling an intermediate cycle between a double effect cycle and a triple effect cycle.
摘要:
To provide a highly efficient and compact absorption refrigerating machine with water heated from 60 to 70 degrees Celsius as the heat source. In an absorption refrigerating machine including a regenerator G, condenser C, an absorber A, an evaporator E, an auxiliary regenerator GX and an auxiliary absorber AX, the concentrated solution from G is heated and further concentrated in GX, while the diluted solution from A is cooled in AX, the refrigerant vapor from GX is absorbed. A low temperature heat exchanger XL is provided for heat exchange between the concentrated solution supplied from GX to A, and the diluted solution sent from AX to G, and a high temperature heat exchanger XH is provided for heating the diluted solution leaving from XL and sent to G with the concentrated solution supplied from G to GX.
摘要:
The present invention relates to a plate heat exchanger for simultaneously exchanging heat between two sets of fluids having different temperatures. The plate heat exchanger comprises a heat exchange element (2) comprising two plates facing each other so as to form a inner sealed space as a passage for a first fluid, and a plate surface of the plate serves as a heat transfer surface, and a fluid flowing along an outer surface of the plate is a second fluid. The plate heat exchanger comprises a heat exchange element (2′) comprising two plates facing each other so as to form a inner sealed space as a passage for a third fluid, and a plate surface of the plate serves as a heat transfer surface, and a fluid flowing along an outer surface of the plate is a fourth fluid. A plurality of the heat exchange elements (2) and a plurality of the heat exchange elements (2′) are alternately disposed in such a manner that the plate surfaces of the plates are opposed to each other and a predetermined gap is formed between adjacent the heat exchange elements. A communication pipe communicating with the inner spaces of the heat exchange elements (2) and a communication pipe communicating with the inner spaces of the heat exchange elements (2′) are formed on the plate surfaces of the heat exchange elements (2) and (2′) and integrally formed with the elements.
摘要:
An information processing apparatus is constructed so that a frequency of an external clock to be supplied to a central processing unit (CPU) which includes a phase locked loop (PLL) circuit is gradually increased from a first frequency to a second frequency within a latency time required for the PLL circuit to make a phase lock, when an operation mode of the CPU is switched from a first mode to a second mode.
摘要:
A controller for an absorption cold/hot water generating machine, in which a refrigerating cycle is formed by pipe-connecting an evaporator, an absorber, a solution heat exchanger, a low-temperature generator, a condenser, and a high-temperature generator, and the solution level in a header of the high-temperature generator is kept within a prescribed range by controlling the flow rate of the solution fed from the absorber to the high-temperature generator; wherein a solution pump for feeding a solution from the absorber to the high-temperature generator is inverter-driven, and there is provided pressure difference detecting means for detecting a difference in pressure between the high-temperature generator and the absorber; and wherein there is provided control means which controls the solution pump driving frequency of the inverter as a function of a pressure difference between the high-temperature generator and the absorber.
摘要:
A thin-film magnetic head comprising a lower magnetic core formed on a substrate, an upper magnetic core formed on the lower magnetic core with a magnetic gap therebetween, and a coil interposed between the lower magnetic core and the upper magnetic core as insulated from the lower magnetic core and the upper magnetic core, characterized in that at least either of the lower magnetic core and the upper magnetic core comprises a front body of a magnetic pole facing a magnetic recording medium and a rear body of a magnetic pole having part thereof superposed on the front body of the magnetic pole, the rear body of the magnetic pole is disposed as recessed from the head surface facing the medium and held in contact with the front body of the magnetic pole in a plane, the plane is terminated at a rear of the end of the front body of the magnetic pole, and the rear body of the magnetic pole has a shape curved or bent in the direction opposite to the magnetic gap, and further the front body of the magnetic pole is composed of a magnetic member embedded in a trench formed in advance in an insulating layer.
摘要:
In a film forming vessel, a substrate destined to carry on the surface thereof a thin film to be formed and a magnetron sputtering source integrally composed of an electric field supply means and a main magnetic field supply means for forming magnetron plasma in the neighborhood of the target and concurrently serving as a target holder for retaining a target in place are disposed as opposed to each other. An electromagnet as an auxiliary magnetic field supply means for decreasing the spatially dispersed amount of magnetron plasma in the neighborhood of the surface of the substrate is also laid out in the film forming vessel. A thin film of compound, for example, is formed on the substrate, with the spatially dispersed amount of magnetron plasma in the neighborhood of the surface of the substrate decreased as described above. As a result, the thin film of excellent quality is formed with high repeatability on a large surface area.