SU804001A2 - Electrodynamic vibrator - Google Patents

Description

(54) ELECTRODYNAMIC VIBRATOR

one

The invention relates to technical acoustics and can be used in the development of devices intended to excite mechanical vibrations.

According to the main auth. No. 722598 is known for an electrodynamic vibrator containing a magnetic system in the form of a magnetic core and core, forming two annular gaps with power windings located in them, which are wound on a core, while the core and magnetic core are mounted with the possibility of moving relative to each other 1.

However, this vibrator is expensive.

The purpose of the invention is to reduce power consumption.

The goal is achieved by the fact that the power winding is made of ferromagnetic material.

The drawing shows schematically a section of a part of the vibrator in the air gap area.

- The power winding of ferromagnetic material 1 is wound on core 2 in the area of the air gap between the core and magnetic core 3.

Electrodynamic vibrator works as follows.

The oscillatory movement of the movable part of the magnetic circuit arises as a result of the interaction of the current of the excitation windings with a constant magnetic field created by the bias winding. The arising mechanical force is transmitted through the fixed part of the magnetic circuit to the object. The size of the air gaps is determined by the requirement of no collisions between the field windings and the moving part of the magnetic circuit. The magnetic resistance of the air gap becomes much less than in the known electrodynamic vibrators, due to the performance of the power winding of the ferromagnetic material. In this case, it is practically possible to reduce the electrical resistance of the winding due to an increase in the cross section of the winding conductors, as a result of which the consumed electrical energy will be further reduced.

Claims (1)

Invention Formula Electrodynamic vibrator; No. 722598, which is also distinguished by the fact that, in order to reduce the energy consumed, the power winding is made of a ferromagnetic material. Sources of information taken into account in the examination 1. USSR author's certificate. No. 722598, cl. In About In 1/04, 1978.