Abstract:
According to the present invention, a cooling apparatus using boiling and condensing refrigerant, includes a fluid separating plate for separating a high-temperature fluid from a low-temperature fluid, a refrigerant tank disposed on the side of the high-temperature fluid from the fluid separating plate, a refrigerant sealed into the refrigerant tank, a pair of communication pipes, one end of which is communicated with the refrigerant tank hermetically, a condensing portion communicated with the other end of the communication pipes and disposed on the side of the low-temperature fluid from the fluid separating plate, and a heat insulating material as a high-temperature portion-side heat insulating material coated on the outer periphery of the high-temperature-side communication pipe. In this way, it is possible to suppress a heat conduction from a high-temperature portion (high-temperature air) to the high-temperature-side communication pipe. As a result, it is possible to prevent the descending refrigerant which has been condensed and liquefied in the radiator from receiving heat from the high-temperature portion through the high-temperature-side communication pipe to receive an ascending force in the high-temperature-side communication pipe.
Abstract:
In a cooling apparatus, a radiating part mounted on a refrigerant tank is made by stacking refrigerant tubes and fins alternately. A first header and a second header are provided at the ends of the refrigerant tubes. When the cooling apparatus is used in a vertical attitude, the first header is positioned above the liquid surface of refrigerant inside the refrigerant tank, and the second header is positioned below the liquid surface. Consequently, vapor refrigerant boiled by heat from a heat-emitting body attached to the refrigerant tank can flow through the first header into the refrigerant tubes, and liquid refrigerant liquefied in the refrigerant tubes can flow through the second header back to the refrigerant tank.
Abstract:
A ferromagnetic tunnel-junction magnetic sensor includes a first ferromagnetic layer, an insulation barrier layer formed on the first ferromagnetic layer and including therein a tunnel oxide film, and a second ferromagnetic layer formed on the insulation barrier layer, wherein the insulation barrier layer includes a metal layer carrying the tunnel oxide film thereon such that the tunnel oxide film is formed of an oxide of a metal element constituting the metal layer, and wherein the insulation barrier layer has a thickness of about 1.7 nm or less but larger than 1 molecular layer in terms of the oxide forming the tunnel oxide film.
Abstract:
The magnetic sensor comprise a multi-layer structure 10 including a ferromagnetic layer 12 of FeCo alloy, an insulation layer 14 of Al.sub.2 O.sub.3 and a compound semiconductor layer 16 of GaAs. Circularly polarized light is irradiated to the compound semiconductor layer 16 to generate electrons. A dc voltage is applied to the ferromagnetic layer 12 and the compound semiconductor layer 16 by a dc power source 20 while circularly polarized light is irradiated to the compound semiconductor layer 16. When a direction of an external magnetic field changes, a magnetization direction of the ferromagnetic layer 12 accordingly changes, and a magnetoresistance between the ferromagnetic layer 12 and the compound semiconductor layer 16 changes. Changes of the magnetoresistance are measured by a voltmeter 22.
Abstract translation:磁传感器包括多层结构10,其包括FeCo合金的铁磁层12,Al 2 O 3的绝缘层14和GaAs的化合物半导体层16。 圆偏振光被照射到化合物半导体层16以产生电子。 直流电压通过直流电源20施加到铁磁层12和化合物半导体层16,同时向化合物半导体层16照射圆偏振光。当外部磁场的方向改变时,磁化方向 铁磁层12相应地变化,并且铁磁层12与化合物半导体层16之间的磁阻发生变化。 通过电压表22测量磁阻的变化。
Abstract:
The present invention relates to a magnetoresistive head having a spin valve MR film for use in a magnetic sensor, a magnetic head or the like. Of two ferromagnetic layers divided by a nonmagnetic metal film, at least ferromagnetic layer on the side being in contact with an antiferromagnetic layer is formed by a cobalt-nickel-iron alloy including at the rate of 5 to 40 atoms % of a nickel and 30 to 95 atoms % of cobalt.
Abstract:
Method and apparatus for manufacturing a heater roller which includes a cylindrical electrically insulating substrate having an outer circumferential surface, and an electrically resistive heat generating layer formed on the substrate for heating a desired member in evenly pressing contact with that member, wherein an electrically resistive paste for forming the electrically resistive layer is delivered from a paste delivery tube of a paste delivery device onto the outer circumferential surface of the substrate, while the cylindrical substrate is rotated about its axis and while the paste delivery device and the electrically insulating substrate are fed relative to each other in the axial direction of the cylindrical substrate, such that the relative feeding speed is controlled in relation to the relative position of the paste delivery device and the substrate in the axial direction of the substrate, within a range that permits formation of a film of the electrically resistive paste on the substrate, which film is continuous in the axial direction of the substrate.
Abstract:
A personal communication apparatus is disclosed, which comprises a radio transmitter 64 and a radio receiver 66 for participating in communication, a microphone 60, a loudspeaker 61, a processor 90 as a controller for controlling call switching communication and packet switching communication, a ROM 100 and a RAM 101 for storing control programs and data, a call switching modem 80 for modulating signal in the speech frequency band, and a packet switching modem 82 for modulating signal in a frequency band exceeding the speech frequency band. The outputs of the microphone 60 and call switching modem 80 are bandwidth limited by a transmission signal processing circuit 72. Communication by the packet switching modem is carried out according to a communication program. The apparatus is capable of stand alone call switching communication and also of packet switching communication, as well as functioning as a radio telephone set.
Abstract:
A vortex flow blower used as an air source to be incorporated into general industrial machines. The vortex flow blower is characterized in that the shape of the blade in its impeller is three dimensionally formed such that at least the inner portion of the blade can be adapted to the three dimensional internal flow. According to the present invention, the aerodynamic performance can be significantly improved and the size of a vortex flow blower can be reduced. Furthermore, an impeller having three dimensionally shaped blades is manufactured by independently manufacturing the shroud and the blades and coupling them, so that the impeller of a complicated shape can be readily manufactured. Furthermore, since the blade can be made of a thin and light material, the secondary moment of inertia of the impeller can be reduced.
Abstract:
A magnetoresistive head used for reading information signals from a magnetic recording medium using a spin valve magnetoresistance effect, comprises a first ferromagnetic layer and a second ferromagnetic layer both are separated by a first nonmagnetic metal layer, a hard magnetic layer formed so as to contact to the second ferromagnetic layer, and a third ferromagnetic layer formed on the hard magnetic layer via a second nonmagnetic metal layer for shutting off exchange coupling and coupled to the second ferromagnetic layer and the hard magnetic layer by static magnetic combination.
Abstract:
A vortex flow blower used as an air source to be incorporated into general industrial machines. The vortex flow blower is characterized in that the shape of the blade in its impeller is three dimensionally formed such that at least the inner portion of the blade can be adapted to the three dimensional internal flow. According to the present invention, the aerodynamic performance can be significantly improved and the size of a vortex flow blower can be reduced. Furthermore, an impeller having three dimensionally shaped blades is manufactured by independently manufacturing the shroud and the blades and coupling them, so that the impeller of a complicated shape can be readily manufactured. Furthermore, since the blade can be made of a thin and light material, the secondary moment of inertia of the impeller can be reduced.