摘要:
A heat sink with fins comprising: a base plate made of a heat conductive material; a plurality of heat dissipating fins which are positioned in heat-dissipating-fin mounting portions formed on one surface of said base plate and are jointed to said base plate by mechanical crimping; and at least one heat pipe which is positioned in a heat-pipe mounting portion formed on an opposite surface of said base plate, portions in the vicinity of said heat pipe being crimped to joint said heat pipe to said base plate.
摘要:
A plate-type heat pipe including a hermetically sealed container in which a working fluid is received, said container comprising a plate member on which at least one heat generating device is thermally connected and another plate member forming a cavity inside thereof in combination with said plate member, and said container being formed by pressure-bonding both peripheral portions of said plate member and said another plate member combined together.
摘要:
A nickel-metal hydride secondary battery comprising electrode group comprising positive electrode comprised mainly of nickel hydroxide, negative electrode comprised mainly of a hydrogen storage alloy, and separator being disposed between the positive electrode and the negative electrode, wherein the electrode group is sealed in battery casing, together with an alkali electrolyte liquid, wherein, in the battery, a W element and an Na element are present simultaneously. The nickel-metal hydride secondary battery of the present invention is advantageous not only in that it exhibits high utilization of the active material and excellent self-discharge characteristics in a high temperature storage as well as high charging efficiency in a high temperature environment, but also in that it has excellent large current discharge characteristics.
摘要:
A plate type heat pipe having a hermetically sealed container installed so as to face a printed board on which at least one part to be cooled is mounted, wherein a block which passes through at least one main surface portion of the container is arranged within the container in a corresponding portion to the part(s) to be cooled.
摘要:
The present invention relates to a blasting method which comprises conducting a delay blast at a particular location; predicting time series data of a waveform of ground vibration or noise at a remote location to be generated by a hypothetical single-hole blast at the particular location using at least one of previous time series data of a waveform of ground vibration or noise generated by said delay blast and actually monitored at the remote location, and the corresponding previous actually applied initiation time series of said delay blast; computing a delay blasting initiation time series for a delay blasting, which provides a waveform of ground vibration or noise satisfying specific conditions, based on the above-predicted time series data of a single-hole blast; and carrying out a subsequent delay blast according to the computed delay blasting initiation time series.
摘要:
A hydrogen absorbing electrode containing a hydrogen absorbing alloy consisting mainly of AB.sub.3 type crystal-structure phase and represented by the following formula (I) is providedR(Ni.sub.1-x M.sub.x).sub.z (I)wherein R is at least one element selected from rare earth elements (including Y), M is at least one element selected from the group consisting of Al, Ga, Zn, Sn, Cu, Si, Ag, In, Ti, Zr, Hf, V, Nb, Ta, Cr, Fe, Mn, Mo and W, and x and z are respectively a number satisfying conditions 0.01.ltoreq.x.ltoreq.0.2, and 2.5
摘要:
The present invention relates to a cooling unit for electronic devices wherein the manufacturing method comprises the steps of: (a) preparing a plate-type metal block for removing heat generated from an electronic component, the metal block having holes in the thickness part of the metal block and having convex portions formed on one main surface or both main surfaces of the metal block; (b) inserting heat pipes into the holes; and (c) applying a local and two-dimensional force from the surface of the metal block to the convex portions to make the surface flat bringing the outer surface of each heat pipe into close contact with the inner wall of each hole in the metal block.
摘要:
Disclosed is a method of manufacturing an alkaline secondary battery improved in the positive electrode utilization, the large-current discharge characteristic, the discharge capacity, and the capacity recovery ratio after storage. This method of manufacturing an alkaline secondary battery comprising a positive electrode containing a nickel compound and a cobalt compound, a negative electrode and an alkaline electrolyte, the method comprising the step of performing initial charging which comprises a charging process of supplying a current I (mA) satisfying the following Inequality (1): 50
摘要:
The invention provides a flattened heat pipe whose vapor flowing passage is not clogged and which has an excellent capillary force. The flattened heat pipe has a closed container formed by flattening a tubular container, a plurality of wick structures arrayed within the container in a longitudinal direction so as to form an acute-angled portion where a capillary force is large at least partially within the container, a hollow portion formed of an outer peripheral surface of the wick structure and an inner wall surface of the container and a working fluid sealed into the container.
摘要:
A register has a narrow and long air blow outlet long in the longitudinal direction and short in the shorter-side direction, and is provided with a front movable louver along the longitudinal direction inside the air blow outlet. The front movable louver has one vertical fin having an annular fin portion at the center. The annular fin portion is formed so as to have a substantially rectangular opening in an air blowing direction in a front view, and has flat plate portions on both side portions. Upper shaft portions are provided on both end portions of the annular fin portion via upper fin portions, and lower shaft portions are provided via lower fin portions. The upper shaft portions and lower shaft portions are supported turnably on bearing portions of fixed walls.