摘要:
A pressure-reducing valve is disclosed which is capable of preventing leakage of a fluid from a passage aperture in a state in which the passage aperture is closed by a valve body. The pressure-reducing valve is structured such that a plunger is moved upward due to a biasing force of a shut spring when a magnetic field generated around and inside a solenoid body is released. Thus, the valve body is pushed up from below by a pressing portion of the plunger with a pressing force based on the biasing force of a shut spring. Due to the valve body being pushed up, the upper end of the valve body is placed in close contact with the inner peripheral portion of the passage aperture so that the passage aperture is closed. In this manner, leakage of hydrogen gas from a primary pressure chamber to a secondary pressure chamber (leakage of the gas pressure) can be prevented with certainty, and thus an unintentional increase of the pressure at the secondary pressure chamber side can be prevented with certainty.
摘要:
A tank system of the invention with multiple tanks makes a joint flow of a fluid released from the multiple tanks and supplies the joint flow to a downstream device, which is located downstream of the multiple tanks. The tank system includes: primary pressure measurement modules that individually measure internal pressures of the multiple tanks as primary pressures; a secondary pressure measurement module that measures a pressure of the joint flow of the fluid as a secondary pressure; flow rate regulation modules that individually regulate release flow rates of the fluid to be released from the multiple tanks; and a pressure control module that estimates a supply flow rate to be supplied to the downstream device from the measured secondary pressure, and then sets an allocation of the supply flow rate of the fluid to be released from each of the multiple tanks corresponding to the measured primary pressure with regard to the tank. This arrangement ensures adequate regulation of the release flow rates from the multiple tanks.
摘要:
A tank system of the invention with multiple tanks makes a joint flow of a fluid released from the multiple tanks and supplies the joint flow to a downstream device, which is located downstream of the multiple tanks. The tank system includes: primary pressure measurement modules that individually measure internal pressures of the multiple tanks as primary pressures; a secondary pressure measurement module that measures a pressure of the joint flow of the fluid as a secondary pressure; flow rate regulation modules that individually regulate release flow rates of the fluid to be released from the multiple tanks; and a pressure control module that estimates a supply flow rate to be supplied to the downstream device from the measured secondary pressure, and then sets an allocation of the supply flow rate of the fluid to be released from each of the multiple tanks corresponding to the measured primary pressure with regard to the tank. This arrangement ensures adequate regulation of the release flow rates from the multiple tanks.
摘要:
A power module includes a power device and a heat sink. The heat sink includes a refrigerant passage in which a cooling medium flows and a corrugated fin body arranged in the refrigerant passage. The refrigerant passage is defined by a surface and a backside, and the power device is disposed in proximity to the surface. The corrugated fin body has crests and troughs that extend in the flow direction of the cooling medium and side walls each of which connects the corresponding one of the crests with the adjacent one of the troughs. Each adjacent pair of the side walls and the corresponding one of the crests or the corresponding one of the troughs arranged between the adjacent side walls form a fin. A guide that extends in the flow direction of the cooling medium and operates to stir the cooling medium is arranged in each of the fins.
摘要:
A heat sink (1) for power module is capable of mounting a power device (101) on at least a surface of the heat sink. The heat sink includes a refrigerant passage (1d) in which cooling medium that dissipates heat generated by the power device (101) flows and a corrugated fin body (1a) arranged in the refrigerant passage (1d). The corrugated fin body (1a) has crests (21b) and troughs (21c) that extend in the flow direction of the cooling medium, and side walls (21a) each of which connects the corresponding one of the crests (21b) with the adjacent one of the troughs (21c). Each adjacent pair of the side walls (21a) and the corresponding one of the crests (21b) or the corresponding one of the troughs (21c) arranged between the adjacent side walls (21a) form a fin (21). Each of the side walls (21a) has a louver (31) that operates to, at least, rotate the cooling medium flowing in the associated fin (21). The heat sink (1) thus has a further improved heat dissipating performance.
摘要:
A soldering method for soldering a semiconductor element to each of bonding portions defined at a plurality of locations on a circuit board is disclosed. The soldering method includes laying out the bonding portions in a non-linear manner in at least three locations on the circuit board, placing the semiconductor elements on the bonding portions with solder in between, placing a weight on the at least three semiconductor elements, which are laid out in a non-linear manner, so that the weight extends over the semiconductor elements, and soldering the semiconductor elements to the bonding portions by melting the solder while pressurizing the semiconductor elements with the weight. This reduces variations in thickness of the solder at the plurality of bonding portions when soldering the plurality of semiconductor elements to the circuit board.
摘要:
A hydrogen storage apparatus that includes multiple gas storage tanks that each house a storing/adsorbing material and through the interior of which a fluid travels is provided. The gas storage apparatus 10 includes roughly cylindrical gas storage tanks 20 that house hydrogen-storing alloy. The multiple gas storage tanks 20 are disposed longitudinally parallel to each other in an ordered fashion such that roughly triangular prism-shaped empty spaces are formed between multiple adjacent hydrogen storage tanks 20. Coolant paths through which coolant flows are formed in these roughly triangular prism-shaped empty spaces. These coolant paths are thermally connected to the hydrogen-storing alloy in the gas storage tanks 20 via constituent members of the gas storage tanks 20 and via heat transfer plates 28 disposed on the gas storage tanks 20.
摘要:
A tank main body accommodates a heat exchanger including a heating medium pipe. A plurality of heat exchanger fins are coupled to the heating medium pipe to divide the interior of the tank main body into a plurality of spaces. A hydrogen storage alloy is provided in the spaces. An absorption portion is provided in the spaces. The absorption portion is deformed by a force generated by expansion of the hydrogen storage alloy, thereby absorbing the force. Therefore, the heat exchanger is prevented from being deformed or damaged even if the bulk density of the hydrogen storage alloy is reduced due to expansion and pulverization of the hydrogen storage alloy.
摘要:
A fuel cell system includes a fuel cell, a motor, a scroll type compressor, connected to the air feeding pipe of the fuel cell and a scroll type regenerator connected to the air exhaust pipe of the fuel cell. The movable scrolls of the compressor and the regenerator are coupled to opposite ends of the motor output shaft in symmetry with each other. A pressure ratio of the regenerator is selected to be smaller than that of the compressor by an amount corresponding to a pressure loss of the exhaust gas across the fuel cell, so that the rotation of the regenerator never transmits a negative torque to the motor output shaft MC. Therefore, the regenerator can efficiently provide power assistance to the compressor.
摘要:
A fuel cell system includes a fuel cell, a motor, a scroll type compressor connected to the air feeding pipe of the fuel cell and a scroll type regenerator connected to the air exhaust pipe of the fuel cell. The compressor and the regenerator share a movable scroll which is operatively coupled to the motor output shaft. The movable scroll has a common base plate, a first scrolling wall arranged on one side of the common base plate to engage with a scrolling wall of a stationary scroll of the compressor, and a second scrolling wall arranged on the other side of the common base plate to engage with a scrolling wall of a stationary scroll of the regenerator. This arrangement simplifies the structure and facilitates power assistance to the compressor.