Abstract: A fuel cell system having uniform temperature field, includes at least one fuel cell stack. The fuel cell stack includes a housing, a fuel cell module, and an air guiding device. The housing defines an internal receiving space, and has an air outlet zone and at least two air inlet zones. The fuel cell module is disposed in the receiving space and includes a plurality of membrane electrode assemblies are disposed at intervals along a first sidewall toward a second sidewall on a plane of the receiving space of the housing. Each of the membrane electrode assemblies corresponds to at least one of the air inlet zones. The air guiding device is disposed on of the housing for generating airflows via the air inlet zones into the housing. The airflows flow along cathode surfaces of the membrane electrode assemblies and finally flow out of the housing via the air outlet zone.

Abstract: An illumination apparatus includes a housing, a light source, a centrifugal fan, and a heat sink. The housing has an accommodation, a plurality of inlets, and a plurality of outlets. The accommodation communicates with the outside of the housing through the inlets and the outlets. The light source, the centrifugal fan, and the heat sink are disposed in the accommodation. The heat sink includes a base and a plurality of fins connected to the base. The base is connected to the light source, the fins radially surround the centrifugal fan. An air channel is disposed between two adjacent fins. An air from the outside of the housing is capable of flowing into the accommodation through the inlets and then into the centrifugal fan in an axial direction of the centrifugal fan, and flow out of the accommodation in a radial direction of the centrifugal fan through the air channel and outlets.

Abstract: A heat dissipating module is adapted for transferring heat from a heat source. The heat dissipating module includes a first heat sink, a fan, a second heat sink, and a partition. The first heat sink is adapted to be connected to the heat source and has an outlet. The fan is disposed adjacently to the first heat sink. The second heat sink is connected to the first heat sink. The partition is disposed between the first heat sink and the second heat sink and has an inlet, and the position of the inlet is corresponding to the position of the fan. An airflow driven by the fan is capable of flowing through the second heat sink, the inlet, and the first heat sink in sequence, and the airflow is capable of exiting from the outlet of the first heat sink.

Abstract: A projection apparatus comprises a housing and further comprises a light source, an imaging system, an optical engine, a first blower, and an axial fan installed in the housing, and an air outlet is disposed on the housing. The light source is installed adjacent to the air outlet. The optical engine is installed between the imaging system and the light source. The first blower is installed at one end far away from the air outlet, and an exhaust port of the first blower faces one portion of the light source. The axial fan is installed at one side of the light source installed the first blower, and the light source is positioned between the air outlet and the axial fan. An exhaust port of the axial fan faces the light source, and a suction port of the axial fan is adjacent to the suction port of the first blower.

Abstract: A method for shutting off a projector having a fan and a light source is provided. The method includes the following steps. The power of the light source is reduced from a first power to a second power and the speed of the fan is increased from a first speed to a second speed after the projector receiving a first command. Then, a process is executed for shutting off the light source and the fan after the projector receiving a second command. The above-mentioned method is capable of not only preventing the projector from damage result from over-shooting, but also shortening the time needed to shut off the projector.

Abstract: A lighting module includes a light source, a heat sink, a case, and a fan. The light source has a light emitting surface and a bottom surface opposite thereto. The heat sink is disposed at the bottom surface of the light source and includes a heat sink mass having a heat dissipation surface, wherein the heat dissipation surface is opposite to the bottom surface. The case is disposed to the heat sink and has a module airflow inlet and a module airflow outlet. The fan is disposed to the case or the heat sink for driving airflow to sequentially pass through the module airflow inlet, the heat sink, and the module airflow outlet. The case is capable of making the flowing direction of the airflow passing the module airflow outlet the same as the light emitting direction of the light emitting from the light emitting surface.

Abstract: A backlight module including a light box, a plurality of light source sets, and a heat dissipation device is provided. The light box has a bottom and a light-emitting section. The bottom has a first surface and a second surface opposite to the first surface. The light source sets are disposed on the first surface, and each of the light source sets includes a substrate disposed on the first surface and a plurality of point light sources disposed on the substrate. The heat dissipation device is disposed on the second surface. The heat dissipation device includes a thermal assembly and at least one fan, and the thermal assembly includes a plurality of covers. Each of the covers is individually disposed on the second surface at a position below one of the light source sets, and an air flow channel is formed between each cover and the bottom.

Abstract: A heat-dissipating device used in a projection display apparatus with an air outlet includes a fence module, at least one resilient member, and a shape memory alloy module. The fence module is disposed at the air outlet and includes at least one guiding plate with a pivot. The resilient member exerts a first force on the guiding plate to enable the guiding plate to rotate on the pivot, and the shape memory alloy module deforms when heated to exert a second force on the guiding plate to enable the guiding plate to rotate on the pivot.

Abstract: A cooling system is for cooling a lamp module within a projection apparatus and includes an axial fan unit for mounting within the projection apparatus, defining an axial direction and having an air discharging side to permit an airflow flow therethrough, the airflow defining a flow direction that cooperates with the axial direction to define an angle therebetween. The system further includes a flow-guiding duct that has an air inlet located adjacent to the discharging side of the axial fan unit and that is oriented toward the angle in such a manner to define the flow direction for guiding the airflow toward the lamp module.

Abstract: A centrifugal blower includes a casing, a motor fixed in the casing, a fan structure, and an anti-leakage element. The casing has a top portion having an inlet, a bottom portion, and a side wall respectively connecting the top and bottom portions and having an outlet. The fan structure disposed in the casing and driven by the motor has a body connected to the motor and blades surrounding the body and being connected to the body, and rotates about an axis in a first rotation direction. The anti-leakage element extends from at least part of an edge of the inlet to an interior of the casing, partially covers parts of the blades, and extends from neighborhood of the outlet in a second rotation direction against the first rotation direction. A range of the anti-leakage element extending to the interior of the casing is gradually reduced along the second rotation direction.

Abstract: Provided is a water flow system for a fuel cell. The fuel cell includes a battery module. The battery module has a cathode end and an anode end. The water flow system includes a water absorbing material and a pump. The water absorbing material has a first capillary structure and a second capillary structure. One end of the second capillary structure is connected to the first capillary structure. The first capillary structure contacts the cathode end of the battery module. The second capillary structure is disposed outside the battery module and is separated from the cathode end. One end of the pump is connected to the other end of the second capillary structure of the water absorbing material to pump the water in the second capillary structure.

Abstract: A fuel cell circulation system includes a fuel tank, a water tank, a mixing tank, a first pump, a second pump, and an on/off valve. The mixing tank is in fluid communication with the fuel tank and the water tank. The first pump in fluid communication with the fuel tank, the water tank and the mixing tank is for pumping the fuel in the fuel tank and the reaction water in the water tank into the mixing tank to form a mixed fluid. The second pump in fluid communication with the fuel cell and the mixing tank is used for cyclically pumping the mixed fluid to the fuel cell and sending the reacted mixed fluid back to the mixing tank. The on/off valve is provided on the flow path between the fuel tank and the first pump to control the fluid communication between the fuel tank and the mixing tank.

Abstract: A fuel cell including at least a membrane electrode assembly (MEA), a pipe, a pump and a linkage arrangement is provided. The MEA includes an anode layer, a cathode layer and an electrolyte layer disposed between the anode layer and the cathode layer. The pump is adapted to drive a fluid flowing in the pipe to provide fuel for the anode layer. The linkage arrangement includes a first blade, at least a second blade and a connecting element. The first blade is disposed inside the pipe and located on a flowing path of the fluid, and the fluid is adapted to drive the first blade to rotate. The second blade is disposed outside the pipe, and the connecting element is adapted to connect the first blade and the second blade so that the first blade drives the second blade to rotate to bring air to flow through the cathode layer.

Abstract: A membrane electrode assembly (MEA) of a three-edge configuration is provided for a fuel cell system. The MEA is tailored to have three edges and the three edges are embedded in an open space of a frame. The three-edge MEA is arranged between an anode collector plate and a cathode collector plate of the fuel cell system. A flow field plate is arranged at the anode side of the MEA with the anode collector plate interposed between the flow field plate and the MEA. The flow field plate forms a fuel transporting channel that is delimited by three side walls and has three vertices. The configuration of the fuel transporting channel corresponds in shape to the three-edge configuration of the MEA and is in communication with at least one fuel inlet and at least one fuel outlet corresponding to the fuel inlet.

Abstract: A liquid crystal projection apparatus includes an illumination system, at least a light-transforming module and a projection lens. The illumination system provides a light beam having light polarized in a first direction and in a second direction. The light-transforming module and the projection lens are both disposed on a transmission path of the light beam. The light-transforming module includes a transmissive liquid crystal display (LCD) panel, a plurality of first polarizers and at least a second polarizer. The light polarized in a first direction passes through the first polarizers disposed at a side of the transmissive LCD panel, and the light polarized in a second direction is partially blocked by each of the first polarizers. The light polarized in the second direction passes through the second polarizer disposed at another side of the transmissive LCD panel, and the light polarized in the first direction is blocked by the second polarizer.

Abstract: A fuel cell apparatus including a reaction unit for performing a chemical reaction, at least one fan for providing an airflow, and an airflow guiding device is provided. The airflow guiding device is connected to the fan and the reaction unit. The airflow guiding device includes an airflow rectification segment and a first airflow separation segment. The airflow rectification segment is connected to the fan and has one flow channel. The first airflow separation segment is connected to the airflow rectification segment and disposed between the airflow rectification segment and the reaction unit. A number of flow channels inside the first airflow separation segment is N1, where N1 is a positive integer and N1>1.

Abstract: A fuel cell module including a membrane electrode assembly (MEA), a pressing plate, an anode collector, an anode flow channel plate, a cathode collector, and a cathode flow channel plate is provided. The MEA has a protrusion, and the pressing plate presses an edge of a cathode of the MEA. The pressing plate has a first opening to expose the protrusion. The anode collector is disposed on an anode of the MEA. The anode flow channel plate is disposed on anode collector. The anode collector is disposed between the anode and the anode flow channel plate. The cathode flow channel plate faces the cathode collector disposed on the cathode and the pressing plate to form a flow channel between an inner surface of the cathode flow channel plate and the cathode collector. The cathode flow channel plate has a concave portion corresponding to the protrusion.

Abstract: A flow channel plate suitable for use in a fuel cell including a plate body and at least a group of flow guiding blocks is provided. The plate body has a first side wall and a second side wall opposite to the first side wall. The first side wall has at least an inlet and the second side wall has at least an outlet. The group of flow guiding blocks is disposed in the plate body and is adjacent to the first side wall, and includes a plurality of flow guiding blocks. One of the flow guiding blocks is a first flow guiding block aligned with the inlet. The rest of flow guiding blocks are arranged into m rows between the first flow guiding block and the second side wall and the first row thereof is adjacent to the first flow guiding block. Where m is a nature number.

Abstract: A projecting device includes a casing, an optical engine, and a heat-dissipating mechanism. The casing includes a lower casing body and an upper casing body covering the lower casing body. The optical engine is disposed in the casing, and includes a light source module. The heat-dissipating mechanism includes a first blower disposed uprightly in the casing and adjacent to one side of the light source module for driving airflow to cool the light source module and the casing. The first blower has a thickness greater than one half of a length thereof and greater than one half of a width thereof. With the arrangement of the first blower, a sufficient amount of airflow is provided to the system to improve the heat-dissipating effect and to enhance system reliability.

Abstract: A flow channel plate adapted to a fuel cell apparatus is provided. The flow channel plate includes a separating film and a plurality of bar supporting members. The separating film is disposed between two components of the fuel cell apparatus, and the bar supporting members lean against the separating film and the two components to maintain a distance between the two components. The flow channel plate has low flow resistance.