Paddle

About: Paddle is a research topic. Over the lifetime, 5649 publications have been published within this topic receiving 28389 citations.

Valve and vane structures for water cooling air conditioner heat exchanger fins

Abstract: A mechanical control apparatus is provided for controlling the spray or misting of water into the immediate vicinity of the condenser coils in the compressor unit of an air conditioner, and comprises a hinged, vaned paddle member; and a water valve mechanically connected to and operable by the paddle member. The paddle member is mounted so that blown air flow from an air fan in the compressor unit will impinge on the paddle member, will and cause it to pivot upwardly about a hinge. The paddle member has a mechanical valve operating member, and is connected to a source of pressurized water, so that when the valve is open, water will pass through it to at least one nozzle mounted on the compressor unit to be sprayed or misted into the immediate vicinity of the condenser coils. The mechanical linkage between the paddle member and the valve is such that when the paddle member is pivoted upwardly, the valve will be opened; and when the paddle member is in its horizontal orientation, the valve will be closed. The hinged paddle member has a first half region which is distal with respect to the hinge, and a second half region which is proximal the hinge; and there are a plurality of vane elements which are spaced away from each other. The vane elements which are in the first half region are each sloped upwardly and in a direction towards the hinge, and the vane elements which are in the second half region are each sloped upwardly and in a direction away from the hinge.

Amphibious robot with integrally-driven wheel paddle legs

Abstract: The invention relates to an amphibious robot, in particular to an amphibious robot with integrally-driven wheel paddle legs The amphibious robot comprises a front buoy, a middle-front buoy, a watertight electronic cabin, a middle-back buoy, a back buoy, a frame and wheel paddle leg driving modules, wherein the front buoy, the middle-front buoy, the watertight electronic cabin, the middle-back buoy and the back buoy are sequentially arranged on the frame; the frame is provided with a plurality of groups of wheel paddle leg driving modules; two wheel paddle leg driving modules are combined into one group and are symmetrically arranged at two sides of the frame; each wheel paddle leg driving module comprises a wheel paddle leg direct driving joint and a rotary joint, and the wheel paddle leg direct driving joint is rotatably connected with the rotary joint By adopting three groups of symmetric wheel paddle leg driving modules, the requirement of multiple movement modes of crawling and floating of the robot under the amphibious conditions is met, stability, quickness and harmony of movement of the robot are realized at the same time, and the amphibious robot has the advantages of flexible movement, strong environment adaptation, outstanding obstacle-detouring ability and the like

Experimental study on oscillating paddling gait of an eccentric paddle mechanism

Abstract: Eccentric paddle mechanism (ePaddle) is a novel locomotion mechanism designed for amphibious robot. Integrated with several paddles and a wheel, the ePaddle has versatility in locomotion gaits. In this paper, we focus on the aquatic oscillating paddling gait. The conception of the oscillating paddling gait is introduced firstly and followed by the analysis of the oscillation trajectory of the paddles. In order to verify the ability of producing effective thrust force by the oscillating paddling gait, a thrust measuring facility is built. A series of experiments have been carried out with this facility. From the results, we characterize how the amplitude and frequency of the generated net thrust force relate with the amplitude, period of the oscillation of the paddle. Finally, the influence of the number of paddles on the net thrust is analyzed.