摘要:
A thermoacoustic device 1 for improving heat exchange efficiency is provided which has a first stack 3a including stack constituent elements 3eL and 3eH laminated together, and a first high-temperature side heat exchanger 4 and a first low-temperature side heat exchanger 5, which are provided at two ends of the first stack 3a, in which a self-excited acoustic wave is generated by a temperature difference between the first high-temperature side heat exchanger 4 and the first low-temperature side heat exchanger 5 and is then converted to thermal energy in a stack 3b provided between a second high-temperature side heat exchanger 6 and a second low-temperature side heat exchanger 7. Between the first high-temperature side heat exchanger 4 and the first low-temperature side heat exchanger 5, and between the second high-temperature side heat exchanger 6 and the second low-temperature side heat exchanger 7, a stack constituent element 3eL having a low thermal conductivity, a stack constituent element 3eH having a high thermal conductivity, and a stack constituent element 3eL having a low thermal conductivity are provided in that order.
摘要:
There is provided a thermoacoustic device 1 which has in a loop tube 2, a first stack 3a between a first high-temperature side heat exchanger 4 and a first low-temperature side heat exchanger 5, and a second stack 3b provided between a second high-temperature side heat exchanger 6 and a second low-temperature side heat exchanger 7, so that heat at the first stack side is prevented from being transported to the second stack side even when a large acoustic wave is generated in the tube. In the device, self-excited standing and traveling waves are generated by heating the first high-temperature side heat exchanger 4, and by the standing and traveling waves, the second low-temperature side heat exchanger 7 is cooled. a piezoelectric film 81 is provided to suppress an acoustic streaming and/or a direct-current type flow of a working fluid.
摘要:
Some embodiments of the invention include a connecting structure between a support and at least one die attached to the support. The die includes a number of die bond pads on a surface of the die. The connecting structure includes a plurality of via and groove combinations. Conductive material is formed in the via and groove combinations to provide connection between the die bond pads and bond pads on the support. Other embodiments are described and claimed.
摘要:
A terminal block in which a plurality of metal conductive plates (10) to be connected to device-side busbars provided in a motor are made integral by a connector housing (50) includes a primary molded article (60) in which the plurality of conductive plates (10) are made integral by a connector housing (50); a metal plate (30) to be attached and fixed to a motor case; and a secondary molded portion (70) integrally forming the primary molded article (60) and the metal plate (30). The secondary molded portion (70) is formed by a secondary molding die including both upper and lower dies (90, 91) and a slide die (92). Pairs of tight holding portions (69, 69) for tightly holding the slide die (92) are provided on the primary molded portion (61) before the secondary molded portion (70) is formed.
摘要:
In an inductor including a coil, a drum type core constituted by a soft magnetic metal material and a resin material, and a filling member constituted by a soft magnetic metal material and a resin material in which a magnetic flux excited by aforesaid coil goes through aforesaid drum type core and aforesaid filling member serially, the present invention constitutes an inductor, wherein aforesaid drum type core is constituted by injection molding so as to include a receiving portion, aforesaid coil is arranged in aforesaid receiving portion, and aforesaid filling member is filled therein.
摘要:
A thermoacoustic apparatus capable of reducing the time elapsed until an acoustic wave is generated and improving the energy conversion efficiency significantly is provided. In order to solve the above-described issues, in a thermoacoustic apparatus 1 including a pair of heat exchangers 41 and 43 separately set on the high temperature side and on the low temperature side, a second stack 42 which is sandwiched between the heat exchangers 41 and 43 and which has a plurality of transmission paths in the inside, and a loop tube 2 provided with the heat exchangers 41 and 43 and the stack 42, the thermoacoustic apparatus converting acoustic energy generated in the loop tube 2 with an acoustic wave generator 3 to thermal energy by using the heat exchangers 41 and 43 and the stack 42, a narrow portion 21 in which the inner diameter is relatively reduced is disposed at a position at which the particle velocity of a standing wave generated in the loop tube 2 is in the vicinity of a maximum. Furthermore, in order to reduce the particle velocity, a branch tube 2e is connected at a position at which the particle velocity of a standing wave generated in the loop tube 2 is in the vicinity of a minimum.
摘要:
The increasing globalization of the world necessitates further strengthening of foreign language learning policies. The brain's foreign language recognition activity is enhanced and effective foreign language learning is enabled by extracting signals of prescribed bands from a speech signal in a foreign language using a first bandpass filter section having two or more bandpass filters, extracting the envelopes of each frequency band signal using envelope extraction sections having envelope extractors, applying a noise source signal to a second bandpass filter section having two or more bandpass filters and extracting noise signals corresponding to the prescribed bands, multiplying the outputs of the first bandpass filter section and the second bandpass filter section in multiplication sections, summing up the outputs of the multiplication sections in an addition section to produce a Noise-Vocoded Speech Sound signal, and presenting the Noise-Vocoded Speech Sound signals for listening.
摘要:
An electric motor designed for electric tools. The motor includes a first molded coil having a first coil covered entirely with a resin that is electrically insulating and highly heat conductive. The motor also includes a second molded coil having a second coil covered entirely with the resin. The first molded coil has a pair of first axial portions, and the second molded coil has a pair of second axial portions in alignment with the first axial portions. A stator core disposed around the molded coils includes a first stator core and a second stator core with first stator core legs and second stator core legs, respectively. Air paths through which fan airflow passes are formed between the axial portions and the opposing stator core legs.
摘要:
A refrigerant circuit R includes, a compressor 25 for compressing a refrigerant to a pressure higher than the critical pressure, a gas cooler 26, a motor-operated expansion valve 27, and an evaporator 28, and uses as a refrigerant a natural system refrigerant. A receiver 43 is provided to the high-pressure side of the refrigerant circuit R. There is provided an adjusting valve 44 for adjusting the refrigerant amount flowing through the inside of the receiver 43. A controller 55 adjusts the opening of the adjusting valve 44 so as to bring the temperature of the receiver 43 close to a target receiver temperature.
摘要:
A positive electrode plate (11) and a negative electrode plate (12) are coiled around into a flat shape such that positive electrode layer faces (22a-22e) and negative electrode layer faces (23a-23f) are alternately layered upon one another with a separator interposed therebetween. Positional discrepancy detecting holes (41a, 41b, 42, 43, 44) are formed in the positive electrode layer faces (22a, 22b) and negative electrode layer face (23a) facing each other at the coiling start end, and in the positive electrode layer face (22e) and negative electrode layer face (23f) facing each other at the coiling finish end. The electrode plates are coiled into an electrode plate group, which is subjected to X-ray inspection for detecting positional displacement based on a discrepancy in the positions of the holes.