Patent
Finned heat exchanger
TLDR
A finned heat exchanger includes a plurality of elongated fins which are arranged at a predetermined interval in parallel with one another such that air flows between neighboring ones of the fins in a predetermined direction as discussed by the authors.Abstract:
A finned heat exchanger includes a plurality of elongated fins which are arranged at a predetermined interval in parallel with one another such that air flows between neighboring ones of the fins in a predetermined direction. A plurality of heat transfer tubes which contain refrigerant passing therethrough are orthogonally inserted through the fins so as to be arranged in a plurality of columns on the fins. When the finned heat exchanger is operated for condensation, the heat transfer tubes are provided in two paths in the vicinity of an inlet for the refrigerant and are provided in one path in the vicinity of an outlet for the refrigerant, such that the heat transfer tubes of the one path occupy about 5 to 30% of all the heat transfer tubes.read more
Citations
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Patent
Heat pump water heater
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Shun Yoshioka,Shuji Ikegami +1 more
TL;DR: In this paper, corrugated sheet fins are used as the fins of a heat exchanger for exchanging heat between a fluid, such as a refrigerant, and air, an object is to increase the surface areas of the fins while suppressing an increase in draft resistance, so as to attain the improvement of performance.
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Heinz Thomas J,Dae Shik Park +1 more
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Heat exchanger with fin
TL;DR: In this paper, the authors proposed a method to prevent the occurrence of choking due to frosting, to improve heat exchange capacity, and to enable increase of a heating operation continuous time by a method wherein a heat transfer pipe is arranged downstream of an air flow from the central part of a fin, a waveform cut rise is formed in the portion, on the upper stream side of a water flow, of the fin, and a slitform cut rises in the part, on downstream side of the water flow.
References
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Patent
Heat exchanger with fin
TL;DR: In this paper, the authors proposed a method to prevent the occurrence of choking due to frosting, to improve heat exchange capacity, and to enable increase of a heating operation continuous time by a method wherein a heat transfer pipe is arranged downstream of an air flow from the central part of a fin, a waveform cut rise is formed in the portion, on the upper stream side of a water flow, of the fin, and a slitform cut rises in the part, on downstream side of the water flow.
Patent
Heat exchanger with fins
TL;DR: In this article, the authors proposed a method to improve a dropping of water drpplets condensed at fins and restrict an increasing of aeration resistance of air flow and a decreasing of a thermal transmitting efficiency by placing some space holding pieces having a wider width of an extreme end than that of a root part.
Patent
Cross-fin coil type heat exchanger
TL;DR: In this paper, a cross-fin coil type heat exchanger is proposed, where a multiplicity of raised fins of the louver type are formed on the major portion of the surface of a convoluted fin base plate and the area of the portion of fin baseplate reduced in heat transfer performance is minimized, to improve the heat transfer effects achieved by the fins.
Patent
Alarm electronic watch
TL;DR: In this paper, when alarm time is reached while the time is being displayed on a display body of self-light emitting type, production of sound is inhibited and the reaching of the alarm time can be announced by changing the state of display from ordinary one through flickering or the like, whereby the consumption of battery is prevented.
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Manufacture of semiconductor device
TL;DR: In this paper, the P type impurity is injected into regions serving as the field oxide films in the vicinity of the memory cell transistor sections in order to improve the efficiency of writing again while employing the photo resists 31, the gate oxide films 25 and the photo-resist 62 as masks.