| 摘要 |
1. A hand-held suction pump for creating a vacuum in a container (2) provided with a suction valve (3), comprising an elongated outer casing in which an electric motor (7) and a piston pump (14, 15) driven by the motor (7) are accommodated, wherein the pump chamber (14) of the piston pump is connected by an inlet valve and a suction duct (28) to a hollow tip (34) at the free end of the casing for direct coupling with the suction valve of the container, the pump chamber being further connected by an outlet valve to an exhaust duct (29) having a duct opening on the outer surface of the wall of the outer casing for porting an exhaust flow to the exterior of the outer casing, characterized in that the duct opening of the exhaust duct (29) is overlapped by a baffle (38) which is separated by a gapped distance from the outer surface of the wall of the outer casing so as to deflect the exhaust flow exiting the duct opening by a substantial angle. 2. A hand-held suction pump according to claim 1, characterized in that said angle is an angle of substantially 90 degree . 3. A hand-held suction pump according to claim 1 or 2, characterized in that an exit port (39) is formed between the baffle (38) and the wall of the outer casing designed for directing the exhaust flow in a direction substantially parallel to the axis of the outer casing toward the hollow tip (34) at the free end of the casing. 4. A hand-held suction pump according to any of claims 1 to 3, characterized in that the baffle (38) is formed by a wall portion of a sleeve (30) attached to the outer casing. 5. A hand-held suction pump according to claim 4, characterized in that the hollow tip (34) is disposed at a terminal cap (32) of the outer casing removably mounted by means of the sleeve (30). |
