Electromagnetic linear motor

An electromagnetic linear motor comprises a tubular stator (1), which has a longitudinal axis (W), and a permanent magnet (7) with poles oriented along said axis (W) and linearly movable inside the stator (1). The stator (1) comprises at least two columns (A, B) formed by electromagnets (2), each electromagnet (2) comprising a core (U) formed by a central straight segment (4) and two end polar expansions (5) all being oriented towards and orthogonally to said axis (W). The columns are circularly arranged around said the permanent magnet (7) and mutually linearly offset along said axis (W). A compressor and a valve driven by such an electromagnetic linear motor are also disclosed. 种电磁直线电机，包括具有纵向轴线(W)的管状定子(1)，以及磁极沿所述轴线(W)定向并可在定子(1)内直线移动的永磁体(7)。该定子(1)包括由电磁体(2)形成的至少两个柱体(A、B)，各电磁体(2)都包括由中央直线区段(4)和全部朝向并正交于所述轴线(W)的两个端极扩大部(5)形成的芯体(U)。柱体绕所述永磁体(7)沿圆周布置，并沿所述轴线(W)彼此线性地偏移。还公开了由这种电磁直线电机驱动的压缩机和阀。