摘要:
A parallel type refrigerator provided with a plurality of condensing chambers which are formed by partitioning the inside of a shell of a condenser by partition plates so that a cooling medium flows through tubes respectively provided in the plurality of condensing chambers in sequence, and further provided with a plurality of evaporating chambers which are formed by partitioning the inside of a shell of an evaporator by partition plates so that a cooled medium flows through tubes respectively provided in the plurality of evaporating chambers in sequence. Further, in this apparatus, the plurality of condensing chambers of the condenser, the plurality of throttling mechanisms, the plurality of evaporating chambers and the plurality of compressors are connected through refrigerant piping so that refrigerants discharged from the plurality of compressors are circulated to the plurality of compressors through the plurality of condensing chambers of the condenser, the plurality of throttling mechanisms and the plurality of evaporating chambers in this order.
摘要:
A urethane-forming curable composition which has a low viscosity and therefore can sufficiently flow around to details or minute cavities of electric or electronic parts or devices to seal the same and which can give flexible curing products excellent in heat resistance, hydrolysis resistance (wet heat resistance) and moistureproofness and capable of preventing hardness changes as well as reductions in insulating performance over a long period of time even under severe conditions and therefore can reliably protect the electric or electronic parts or devices. A hydrogenated OH-containing liquid polyisoprene (X) and a polyester polyol (Y) which is liquid at ordinary temperature and is constituted of fatty acid units (A) and polyhydric alcohol units (B) and which has an iodine value of not more than 50 are combinedly used as the polyol component. The fatty acid units (A) of this polyester polyol (Y) at least partly comprise hydroxy fatty acid oligomer (at least dimer) units (a). Electric or electronic parts or devices are treated for moistureproofness with the curing product of this urethane-forming curable composition.
摘要:
A turborefrigerator in which a coolant discharged from a turbocompressor is condensed in a condenser by dissipating heat to a cooling medium and is then reduced by a throttling mechanism, and thereafter, the coolant evaporates by absorbing heat from a cooled medium in an evaporator and is circulated to the turbocompressor. The present invention simplifies the configuration of such a turborefrigerator, so that the size, weight and cost thereof are reduced. Moreover, the present invention enhances the coefficient of performance thereof and prevents lubricating oil and a cooling medium from blending with each other to cause inconveniences. Thus, the turborefrigerator of the present invention is further provided with an inverter motor whose output shaft directly connected to an impeller of the turbocompressor is supported by a bearing lubricated by a liquid refrigerant, and with a control unit adapted to control both of a suction vane, which is provided in the turbocompressor, and the inverter motor by associating said suction vane and the inverter motor with each other.
摘要:
A duplicating photosensitive material film is brought into close contact with an ND glass reduced in thickness so as to become flexible or a flexible sheet or an ND glass coated with a cushioning layer through an optical contacting liquid containing a surface active agent. In addition, a spacer is interposed between a hologram original plate and a duplicating photosensitive material, and a space defined by the spacer is filled with an optical contacting liquid, thereby regulating the thickness of the optical contacting liquid layer with the spacer. Therefore, when pressure is applied, the optical contacting liquid is uniformly pressed, so that it can be made uniform and thin in thickness. Accordingly, it is possible to prevent a failure of duplication of a hologram image due to undesirable flow of the optical contacting liquid. In addition, the wettability of the optical contacting liquid improves, so that it is possible to prevent trapping of air and foaming and to make the optical contacting liquid uniform and thin in thickness. Thus, it becomes possible to duplicate a hologram image excellently. In addition, a cushioning layer is provided on the inner side of an AR coated ND glass or on the upper side of a photosensitive material film, and another cushioning layer is provided on the side of an original plate protecting glass which is closer to the optical contacting liquid or on the lower side of the photosensitive material film. With this arrangement, even if dust enters, it can be effectively held inside the cushioning layers. Thus, it is possible to prevent undesirable flow of the optical contacting liquid and lifting of the film due to dust and hence possible to perform duplication effectively without any hindrance. Also disclosed is a hologram producing apparatus which includes mechanisms for feeding and taking up a duplicating photosensitive material film, and a contacting liquid dropping mechanism. The apparatus further includes a mechanism for nipping an excess of contacting liquid dropped, a mechanism for drying the contacting liquid attached to the exposed duplicating photosensitive material film, a mechanism for positioning the film, etc.
摘要:
A duplicating photosensitive material film is placed into close contact with a thin flexible ND glass or an ND glass coated with a cushioning layer through an optical contacting liquid containing a surface active agent. A spacer is interposed between a hologram original plate and the duplication photosensitive material, and the space defined by the spacer is filled with an optical contacting liquid, the spacer thereby regulating the thickness of the optical contacting liquid layer. In addition, a cushioning layer is provided on the inner side of an AR coated ND glass or on the upper side of the photosensitive material film, and another cushioning layer is provided on the side of an original plate protecting glass of the hologram original plate which is closer to the optical contacting liquid or on the lower side of the photosensitive material film. With this arrangement, even if dust enters, it can be effectively held inside the cushioning layers. Thus, it is possible to prevent undesirable flow of the optical contacting liquid and lifting of the film due to dust and hence possible to perform duplication effectively without any hindrance.
摘要:
The current invention relates to an anti-fouling system for substances in contact with seawater which is constituted of the first conductive membrane that is coated on the outer side of the electric insulator mounted at the surface of the substance such as ships, marine structures in contact with seawater and is composed of thin sheets of metals having low specific resistance or metal oxide, spray-coated membrane, evaporated membrane or fused membrane, and the second conductive anti-fouling membrane having higher electric resistance than the first conductive membrane which is coated on the outer side of the above first conductive membrane and which is composed of the oxidation-resistant insoluble substance and the organic binder, and the power supply equipment that supplies direct currents flowing from the first conductive membrane through the second conductive membrane toward the electric conductor made of iron, copper or carbon located in seawater and opposite the second conductive membrane, owing to the constitution of which the prevention of rise in resistance because of consumption of the conductive membrane, the uniforming of current distribution and a high anti-fouling performance by using the low-resistant conductive membrane are achieved.
摘要:
A high frequency oscillation type proximity switch, comprising: an oscillation circuit having a first resonant frequency; a tank circuit connected in a positive feedback path of the oscillation circuit and including an LC resonant circuit having a second resonant frequency slightly different from the first resonant frequency; and a comparator circuit which discriminates the amplitude of an oscillation output of the oscillating circuit at a predetermined threshold level; the comparator producing a detection output signal when a nonmagnetic metallic object is brought to a certain proximity of a coil included in the LC resonant circuit and a level of the oscillation has thereby changed by a certain amount as a result of a change in the susceptance of the coil. Since the approach of a magnetic object increases the loss of the coil whereas the approach of a nonmagnetic metallic object increases the susceptance of the coil, it is possible to detect magnetic objects alone, nonmagnetic metallic objects alone, or both magnetic objects and nonmagnetic metallic objects alike by appropriately selecting the resonant frequencies of the oscillation circuit, and the tank circuit and the threshold level of the comparator circuit.
摘要:
Disclosed is a power source reset circuit which deactivates a contactless switch for a time interval determined by a delay means so as to prevent any erroneous output from the contactless switch while the output of a power source is unstable immediately after the power source is turned on. The reliability of the delay means is enhanced by the use of a Miller integration circuit which includes a current mirror circuit as a means for amplifying electric current. Furthermore, a switching device may be connected across the capacitor for integration so that the charge in the capacitor may be quickly discharge when the power is turned off, for the purpose of setting the power source reset circuit ready for the subsequent action when the power source is turned on thereafter. This invention is useful in applications where the power source for the contactless switch is frequently turned on and off.
摘要:
A system includes a device and one or more information processing apparatuses. The device includes a device-information generator configured to generate device information on the device; and an analyzer determining unit configured to determine any one of the device and the one or more information processing apparatuses as an analyzer for the device information. The one determined as the analyzer includes an analysis unit configured to perform an analysis based on the device information; and a service determining unit configured to determine a service to the device based on a result of the analysis.
摘要:
A required-circulated-refrigerant flow-rate calculating portion provided in a chilled-water flow-rate estimation calculation portion calculates an evaporator exchanged heat quantity exchanged between a refrigerant and chilled water at an evaporator based on a planned chilled-water-flow-rate value and a measured value of the temperature of the chilled water flowing in the evaporator, and calculates an evaporator-refrigerant flow rate based on that evaporator exchanged heat quantity. Then, a circulated-chilled-water flow-rate back-calculating portion back-calculates an evaporator-refrigerant flow rate based on the calculated evaporator-refrigerant flow rate and a ratio between a set value of differential pressure between a condenser and the evaporator and a measured value of that differential pressure, back-calculates an evaporator exchanged heat quantity exchanged between the refrigerant and the chilled water at the evaporator from the back-calculated evaporator-refrigerant flow rate, and back-calculates the flow rate of the chilled water.