公开(公告)号：WO2020053720A1

公开(公告)日：2020-03-19

申请号：PCT/IB2019/057514

申请日：2019-09-06

Applicant: CASAPPA S.P.A.

Inventor： RIGOSI, Manuel

IPC: F04C2/10 ,  F04C15/00

Abstract: A geared volumetric machine comprising: -a first and a second door (91, 92); the second door (92) operating at a greater pressure than the first door (91); one from between the first and second door (91, 92) being an inlet door of a fluid into the volumetric machine (1) and the other door being an outlet door of the fluid from the volumetric machine (1); a first cogged wheel (11) in turn comprising a first and a second lateral flank (111, 112); a second cogged wheel (12) enmeshing with the first cogged wheel (11); the first wheel (11) comprising a plurality of cogs defining between them a plurality of compartments (9) suitable to house cogs of the second wheel (12); a first and the second abutment (3, 4) between which the first cogged wheel (11) is interposed and that respectively face the first and the second lateral flank (111, 112) of the first cogged wheel (11). a first grooved pathway (31) which at least in a first angular position of the first cogged wheel connects a first and a second zone (51, 52), the first zone (51) comprising at least one of the compartments (9) which is in communication with the second door (92), the second zone (52) being a locus of points interposed between the first abutment (3) and the first flank (111). The first grooved pathway (31) comprises at least one stretch having a passage section having a surface smaller than 1 mm 2 .

公开(公告)号：WO2016185329A1

公开(公告)日：2016-11-24

申请号：PCT/IB2016/052725

申请日：2016-05-12

Applicant: CASAPPA S.P.A.

Inventor： PANNO, Alessandro

IPC: F04C2/10 ,  F04C2/12 ,  F04C2/08 ,  F04C15/06

CPC classification number: F04C2/10 ,  F04C2/086 ,  F04C2/12 ,  F04C15/06 ,  F04C15/064 ,  F04C2230/21 ,  F04C2240/30 ,  F04C2250/101 ,  F04C2250/102

Abstract: A gear pump comprising: - a pair of gears (2) able to interact with a fluid crossing the pump (1); - a housing seating (3) of said pair of gears (2), said housing seating (3) comprising a rest plane (30) of a shim (4); - a delivery conduit (6) which develops from said housing seating (3) and comprising an inlet mouth (60). The inlet mouth (60) of the delivery conduit (6) is at a distance from an intersection (7) between a rest plane (30) of the shim (4) and remaining parts of the housing seating (3).

Abstract translation: 一种齿轮泵，包括： - 能够与穿过所述泵（1）的流体相互作用的一对齿轮（2）; - 所述一对齿轮（2）的壳体座（3），所述壳体座（3）包括垫片（4）的休息平面（30）; - 从所述壳体座（3）形成并包括入口（60）的输送导管（6）。 输送管道（6）的入口（60）与垫片（4）的休息平面（30）和壳体座（3）的其余部分之间的交叉点（7）有一定距离。

公开(公告)号：WO2019229566A1

公开(公告)日：2019-12-05

申请号：PCT/IB2019/053969

申请日：2019-05-14

Applicant: CASAPPA S.P.A.

Inventor： LETTINI, Antonio ,  GUIDETTI, Marco ,  RIGOSI, Manuel

IPC: F04C2/14

Abstract: A volumetric gear machine interacting with a working fluid comprising: - a first toothed wheel (3) with helical teeth comprising a first tooth (31) in turn comprising a first and a second flank (311, 312) opposite each other; - a second toothed wheel (4) with helical teeth having two opposite flanks, the first and the second wheel (3, 4) being operatively coupled in a meshing area (2). At a portion of the meshing area (2), the first and the second flank (311, 312) being in simultaneous contact with the second wheel (4).

公开(公告)号：WO2016207768A1

公开(公告)日：2016-12-29

申请号：PCT/IB2016/053606

申请日：2016-06-17

Applicant: CASAPPA S.P.A.

Inventor： LETTINI, Antonio

IPC: F04B1/20 ,  F04B1/32 ,  F04B49/00

CPC classification number: F04B49/002 ,  F04B1/2078 ,  F04B1/324 ,  F04B49/06 ,  F04B49/125

Abstract: A variable displacement pump comprising a pumping piston (10), cylinder head (2); a rotating shaft (3); regulating means (4) of the displacement of the pump, said means in turn comprising: a structure (41) having a variable inclination; a fluid-dynamic actuator (42) for regulating an inclination of said structure (41); command means (43) for the actuator (42), which assume a non-equilibrium and an equilibrium position, said command means (43) in turn comprising: a sliding body (431) being able to take at least a first position in which it places a chamber (420) acting on said actuator (42) in communication with a first zone (51) at least initially having a pressure that is different from a pressure present in said chamber (420); a sliding element (432) with respect to the sliding body (431) for resetting said equilibrium configuration, said sliding element (432) being distinct from said actuator (42) and being mechanically actuated in consequence of a variation of an inclination of said structure (41).

Abstract translation: 一种可变排量泵，包括泵送活塞（10），气缸盖（2）; 旋转轴（3）; 调节装置（4），所述装置依次包括：具有可变倾斜度的结构（41）; 流体动力致动器（42），用于调节所述结构（41）的倾斜度; 所述执行器（42）的指令装置（43）具有非平衡位置和平衡位置，所述指令装置（43）依次包括：滑动体（431），其能够至少具有第一位置，其中， 它将一个作用在所述致动器（42）上的腔室（420）与第一区域（51）连通，至少最初具有与所述腔室（420）中存在的压力不同的压力; 相对于滑动体（431）的滑动元件（432），用于复位所述平衡构型，所述滑动元件（432）与所述致动器（42）不同，并且由于所述结构的倾斜度的变化而机械地致动 （41）。

公开(公告)号：WO2011073852A1

公开(公告)日：2011-06-23

申请号：PCT/IB2010/055627

申请日：2010-12-07

Applicant: CASAPPA S.p.A. ,  GUIDETTI, Marco

Inventor： GUIDETTI, Marco

IPC: B22C9/10 ,  B22C9/24 ,  F04C2/18

CPC classification number: B22C9/10 ,  B22C9/24 ,  F01C21/10 ,  F04C2/14 ,  F04C2230/21 ,  F04C2240/30

Abstract: Core for casting moulds, comprising: a body (2) insertable inside a mould to form a cavity (6) for a product (4) obtained by means of casting inside said mould, said body (2) having an external surface (3) forming an imprint (7) of said cavity (6) for the product (4); the external surface (3) has at least one protruding portion (8) having a rounded profile and forming an arcuate undercut (9) in said imprint (7).

Abstract translation: 其特征在于，包括：主体（2），其可插入到模具内，以形成用于通过在所述模具内铸造而获得的产品（4）的空腔（6），所述主体（2）具有外表面（3） 形成所述产品（4）的所述腔（6）的印记（7）; 所述外表面（3）具有至少一个具有圆形轮廓的突出部分（8），并且在所述印记（7）中形成弧形底切（9）。