Liquid pump, particularly a fuel-oil pump专利检索-气穴建筑材料专利检索查询-专利查询网

Liquid pump, particularly a fuel-oil pump

阅读：969发布：2022-01-28

专利汇可以提供Liquid pump, particularly a fuel-oil pump专利检索，专利查询，专利分析的服务。并且The invention relates to a pump of a type commonly used for oil burners having kidney shaped inlet and exhaust passages formed in a wall adjacent the pumping elements of the pump. Based on the discovery that air pockets are formed in the suction inlet when there is an appreciable decrease in the velocity of the liquid being sucked through the inlet passage or passages, inlet passage means are provided having nondecreasing cross sections so as to maintain nondecreasing velocities of liquids flowing therein.，下面是Liquid pump, particularly a fuel-oil pump专利的具体信息内容。

权利要求

1. A pump comprising a casing, fluid pumping elements rotatably mounted in said casing and having a suction inlet region, wall means adjacent said fluid pumping elements and having a recess adjacent to and in fluid communication with said suction inlet region, said casing defining a suction chamber, passage means in said wall means extending from said suction chamber to said recess, said passage means having substantially nondecreasing cross sections throughout to maintain nondecreasing velocities of fluids travelling from said suction chamber to said suction inlet region said passage means including a partial annular passage and three linearly extending sections in tangential relation thereto, said linearly extending sections being symmetrically arranged in equiangularly spaced relation to each other.

2. A pump according to claim 1 wherein said recess and said partial annular passage are in overlapping relation to each other.

3. A pump according to claim 1 including a drive shaft connected to one of said elements, said partial annular passage being positioned so that the fluid flow therethrough is in the same direction of rotation as said drive shaft.

说明书全文

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Liquid pump, particularly a fuel-oil pump

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