NOVELTY - A metal hydride canister apparatus comprises a guiding pipe having first end, second end, and middle section between ends, where ends of pipe pass the corresponding passing holes and are exposed to an outside of a shell, and middle section of pipe forming a twin spiral structure wraps around a bottom-extending filtering rod and is arranged inside the shell.    USE - The metal hydride canister apparatus is for connection to a gas-supply apparatus or a fuel cell (claimed). It is for connection to a hydrogen-filling apparatus.    ADVANTAGE - The apparatus is capable of discharging hydrogen gas uniformly and exchanging heat effectively, such that not only the apparatus is able to maintain a constant flow rate within a specific period, but also may enable a larger hydrogen discharging flow rate. It can effectively filter out impurities, and prevents the finer powder of the degraded metal hydride from leaking. It lowers down the cost.    DETAILED DESCRIPTION - A metal hydride canister apparatus (200) having structures capable of discharging hydrogen gas uniformly and exchanging heat effectively, comprises a shell (202) having a connector (206) arranged in a central hole (212) located on top of the shell, and passing holes (214, 222) arranged around the central hole; a filtering rod (208) having its one end connected to the connector, and the other end extending toward the bottom of the shell; and a guiding pipe (210) having a first end (216), a second end (218), and a middle section (220) between the first and second ends, where the first and second ends of the pipe pass the corresponding passing holes respectively, and are exposed to the outside of the shell, and the middle section of the pipe forming a twin spiral structure wraps around the bottom-extending filtering rod, and is arranged inside the shell.    DESCRIPTION OF DRAWING(S) - The figure is a cross-sectional view illustrating a metal hydride canister apparatus.    Metal hydride canister apparatus (200)    Shell (202)    Connector (206)    Filtering rod (208)    Guiding pipe (210)    Central hole (212)    Corresponding passing holes (214, 222)    First end (216)    Second end (218)    Middle section (220)