摘要:
An absorption refrigeration system incorporating a novel solution flow control is disclosed. The solution flow control includes a sensor, preferably in the form of a float which senses the level of the solution in the absorber of the system. The signal from the level sensor is utilized to position a valve for controlling the flow of weak solution in such a manner that the solution flow increases/decreases as the level of the solution in the absorber decreases/increases. The solution control not only provides improved efficiency of the refrigeration system but also protects the system from the risk of crystallization of the solution. In one embodiment, a compact solution control is fully enclosed by an air-tight shell of the absorber and comprises a float, a rod mechanically and drivingly coupling the float with a solution valve so that the buoyancy of the float directly positions the valve. This arrangement does not need to meet the requirement of having an air tight structure and assures a long life in use.
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:
An ice thermal storage refrigerator unit includes a brine path consisting essentially of a refrigerator, an ice thermal storage tank, a water heat exchanger, a brine pump, and control valves, which are connected by piping, and a cold water path consisting essentially of the water heat exchanger, a cooling load, and a cold water pump, which are connected by piping, so that brine is cooled in the refrigerator, and water in the ice thermal storage tank is frozen by the brine, thereby storing heat, and when heat is to be discharged, the brine is cooled by heat of fusion of the ice in the ice thermal storage tank, and the brine is introduced into the water heat exchanger to cool cold water, thereby taking out a cooling capacity. The ice thermal storage refrigerator unit further includes apparatus for detecting a quantity of stored heat remaining in the ice thermal storage tank and apparatus for detecting a quantity of heat discharged from the ice thermal storage tank in order to calculate an allowable discharging heat quantity from the quantity of stored heat remaining in the ice thermal storage tank, thereby providing an energy-saving and low-cost ice thermal storage refrigerator unit which enables a thermal storage tank to be effectively used to the full extent by adding only a simple measuring instrument.
摘要:
A double effect absorption cold or hot water generating machine can supply hot water from a water heater even when it is used for a cooling operation. The double effect absorption cold or hot water generating machine comprises an absorber, an evaporator, a high temperature generator, a low temperature generator, a condenser, a high temperature heat exchanger, a low temperature heat exchanger, and a water heater. The machine further comprises a refrigerant path in a refrigerating cycle including a path from the high temperature generator to the evaporator through a refrigerant branch point at which refrigerant vapor is branched, a heating side of the low temperature generator, and the condenser; a refrigerant path in a hot water cycle including a path from the refrigerant branch point to the high temperature generator and the evaporator through a hot water control valve, and a path for circulating refrigerant in the evaporator; and a water cooler provided in a hot water path in which hot water is heated by the water heater, the water cooler being provided in series with the water heater.
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:
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 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.