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KR-102964205-B1 - Electromagnetic actuator

KR102964205B1KR 102964205 B1KR102964205 B1KR 102964205B1KR-102964205-B1

Abstract

According to the present invention, to provide an electromagnetic actuator (1) for operating a valve of a piston compressor (19) that is configured as simply and compactly as possible and simultaneously meets the requirements of efficiency, low maintenance, reliability and long service life, a power electronic device (6) is arranged within an actuator housing (2) between a coil (3) and an axial actuator end (E) provided with an operating opening, the power electronic device (6) is separated from the coil (3) by a housing wall (7) of the actuator housing (2), a printed circuit board (8) of the power electronic device (6) is arranged on a fixed surface (9) provided on the housing wall (7), and an electrical contact (10) of the coil (3) extends through the housing wall (7) and is connected to the printed circuit board (8).

Inventors

  • 비셀마이어 거노트
  • 코른펠트 마티아스
  • 슈피에글 베른하르트

Assignees

  • 회르비거 비엔 게엠베하

Dates

Publication Date
20260513
Application Date
20201217
Priority Date
20191218

Claims (10)

  1. In an electromagnetically operated actuator (1) arranged on a piston compressor (19) to actuate a valve of a piston compressor (19), the actuator (1) comprises an actuator housing (2) in which a coil (3) and a magnetic armature (4) are arranged, the magnetic armature (4) electromagnetically interacts with the coil (3) to move the magnetic armature (4), the magnetic armature (4) is connected to an actuating element (5) for actuating a valve, and an actuating opening (5a) for the actuating element (5) is provided at an axial actuator end (E) of the actuator housing (2), wherein the actuator (1) is controlled by a power electronic device (6). An electromagnetically operated actuator (1) characterized in that a power electronic device (6) is arranged within an actuator housing (2) between a coil (3) and an axial actuator end (E) provided with an operating opening, the power electronic device (6) is separated from the coil (3) by a housing wall (7) of the actuator housing (2), a printed circuit board (8) of the power electronic device (6) is arranged on a fixed surface (9) provided on the housing wall (7), and an electrical contact (10) of the coil (3) extends through the housing wall (7) and is connected to the printed circuit board (8).
  2. An electromagnetically operated actuator (1) according to claim 1, wherein the actuator housing (2) is made of aluminum, which is a thermally conductive material, in at least the area of the housing wall (7).
  3. delete
  4. An electromagnetically operated actuator (1) characterized in that, in claim 1, at least one heat-conducting element (11) is arranged between a fixed surface (9) of a housing wall (7) of an actuator housing (2) and a printed circuit board (8).
  5. In claim 4, the electromagnetically operated actuator (1) is characterized in that the heat-conducting element (11) is connected to a printed circuit board (8).
  6. An electromagnetically operated actuator (1) characterized in that, in paragraph 4, at least a temperature-sensitive electronic component (12) of a printed circuit board (8) is arranged in an area of a thermal conductive element (11).
  7. In claim 6, the electronic component (12) of the power electronic device (6) is covered with a thermally conductive casting compound, characterized in that it is an electromagnetically operated actuator (1).
  8. A piston compressor (19) comprising at least one valve for controlling the flow of a compressed medium and an actuator for operating said valve, wherein said actuator is designed as an electromagnetically operated actuator (1) according to any one of claims 1, 2, 4 to 7, and said actuator (1) is configured to interact with the valve to operate the valve.
  9. In claim 8, the piston compressor (19) is characterized in that the compressor housing (20) of the piston compressor (19) is cooled by a cooling medium in the valve area, and the actuator (1) is arranged in the compressor housing (20) to cool the actuator (1) in the power electronic device (6) area, and the heat generated by the coil (3) is configured to be dissipated into the compressor housing (20) through the housing wall (7) of the actuator housing (2) and the axial actuator end (E) of the actuator (1).
  10. A valve assembly for arranging in a piston compressor (19), comprising a receiving housing (22) in which the valve is arranged and an actuator fixed to the receiving housing (22) to actuate the valve, wherein the actuator is designed as an electromagnetically actuated actuator (1) according to any one of claims 1, 2, 4 through 7, and the actuating element (5) of the actuator (1) is configured to interact with the valve through an opening (22a) arranged in the receiving housing (22) to actuate the valve.

Description

Electromagnetic actuator The present invention relates to an electromagnetically actuating actuator arranged on a piston compressor to actuate a valve, preferably a suction valve of a piston compressor, wherein the actuator comprises an actuator housing in which a coil and a magnetic armature are arranged, the magnetic armature electromagnetically interacts with the coil to move the magnetic armature, the magnetic armature is connected to an actuating element for actuating the valve, and an actuating opening for the actuating element is provided at an axial actuating end of the actuator housing, and the actuator is an electromagnetically actuating actuator controllable by a power electronics. Furthermore, the present invention relates to a piston compressor having at least one valve, particularly a suction valve, for controlling the flow of a compression medium and having an actuator for actuating the valve, and a valve assembly for being arranged on a piston compressor having a receiving housing in which the valve, particularly the suction valve, is arranged and an actuator fixed to the receiving housing for actuating the valve. Until now, mechanical or hydraulic valve control devices have been used to control inlet and outlet valves in piston compressors. However, these mechanical or hydraulic valve controls are relatively complex and prone to wear, resulting in high manufacturing and maintenance costs. To enable the simplest, least-maintained, and particularly flexible valve control, electromagnetic actuators are increasingly being used for valve operation. However, these types of actuators have very high requirements, and when used for valve operation, the structure and operating mode of the actuator are fundamentally known from the prior art. In particular, short operating times and precisely set and reproducible valve strokes within the maximum possible range must be possible, while on the other hand, low energy consumption, high reliability, a long service life, and a compact design must be ensured. In particular, for large compressors that must move a relatively large mass for valve control, available electromagnetic actuators reach their limits. To meet the necessary boundary conditions, particularly powerful coils are required in this case, and a relatively large installation space is generally needed. Since large currents flow through the coils during operation, a relatively large amount of heat is generated. For example, the temperature in the actuator coil area can range over 120°C. Because temperature-sensitive power electronics used to control the actuator coils are unsuitable for such high temperatures, they are arranged, for instance, in a separate housing as far away from the coil as possible to lower the ambient temperature to an acceptable level for the power electronics. While this protects sensitive electronic components from excessive heat, it further increases the complexity of the entire actuator, for instance, because wiring is required between the external housing and the actuator. Of course, this also increases the installation space required for the actuator. However, this configuration is particularly disadvantageous in applications where available space for arranging the actuator, including the wiring, is limited. In the following description, the present invention is described in more detail with reference to FIGS. 1 and 2, which illustrate schematic and non-limiting advantageous embodiments of the present invention by example. In the drawings: FIG. 1 is a cross-sectional view of an actuator in an advantageous embodiment. Figure 2 is a cross-sectional view of an actuator assembled to the suction valve of a piston compressor. In FIG. 1, an actuator (1) according to the present invention is illustrated in a longitudinal section. The illustrated actuator (1) comprises an actuator housing (2) in which at least one coil (3) and at least one magnet armature (4) interacting with the coil are arranged. For example, a plurality of coils (3) may also be arranged uniformly around a circumference, or the coil (3) may have a plurality of segments arranged uniformly around a circumference. The magnet armature (4) may have a plurality of armature segments corresponding to the coil (3) or coil segments in a circumferential direction. However, the specific design of the coil(s) and the magnet armature (4) is not a substantial configuration for the present invention. Accordingly, the present invention is described below with reference to a single coil (3) and a magnet armature (4) interacting with the coil. The coil (3) and the magnet armature (4) electromagnetically interact to move the magnet armature (4) in an axial direction. To this end, voltage or current may be supplied to the coil (3) to generate a magnetic field, thereby generating a magnetic attraction on the magnetic armature (4). The magnetic armature (4) may be pulled toward the coil (3) by the magnetic attraction. A return spring