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公开(公告)号：US3687154A
公开(公告)日：1972-08-29
申请号：US3687154D
申请日：1970-12-10
Applicant: DANFOSS AS
Inventor： PETERSEN JORGEN HARTVIG , MADSEN INGVARD MOSBY
CPC classification number: F23K5/147 , Y10T137/2607 , Y10T137/2632
Abstract: The invention relates to a pressure regulating and cut-off valve for fuel pumps which includes a setting piston and a combination of two pistons for regulating the pressure outlet between predetermined pressure levels. A pair of springs are provided for resisting movement of the setting piston which are arranged in parallel and have different rectilinear spring rates. The providing of this pair of springs results in space saving, permits a wider adjustment range and is less affected by manufacturing tolerance deviations.
Abstract translation: 本发明涉及一种用于燃料泵的压力调节和截止阀，其包括调节活塞和用于调节预定压力水平之间的压力出口的两个活塞的组合。 提供一对弹簧以抵抗安装活塞的平行移动并具有不同的直线弹簧刚度。 这种弹簧的提供可节省空间，允许更宽的调节范围，并且受制造公差偏差的影响较小。
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公开(公告)号：US3685927A
公开(公告)日：1972-08-22
申请号：US3685927D
申请日：1970-11-16
Applicant: DANFOSS AS
Inventor： PETERSEN JORGEN HARTVIG , MADSEN INGVARD MOSBY
Abstract: 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.
Abstract translation: 本发明涉及一种通常用于油燃烧器的泵，其具有形成在邻近泵的泵送元件的壁中的肾形入口和排气通道。 基于以下发现：当通过入口通道或通道吸入的液体的速度明显降低时，在吸入口中形成气穴，进入通道装置设置有非下降的横截面，以便保持非降低的速度 流入其中的液体
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