JPS62113873A - Magnetic circuit for electro-magnetic pump - Google Patents

Abstract

PURPOSE:To obtain a small and powerful pump by arranging two coils with additive polarity in main magnetic circuit, then opening a portion of a magnetic path between them and arranging a vibrator block having two permanent magnets movably, thereby producing an alternating field in the main magnetic path. CONSTITUTION:Two coils 2, 3 are arranged in main magnetic circuit 1, then a portion 4 of a magnetic path between them is opened and a vibrator block 5 comprising a non-magnetic member held between two permanent magnets arranged in additive polarity in said open path section is arranged movably such that it is positioned in the forward polarity direction against the main magnetic path 1. It is constructed such that two magnets in the vibrator block 5 will attract/repel alternately against the coils 2, 3 in accordance with the alternating field of the main magnetic circuit 1 and the vibrator block 5 is reciprocated in the perpendicular direction against the main magnetic circuit 1, thereby the pumping operation is achieved through reciprocation of said vibrator block 5.

Description

[Detailed Description of the Invention] The present invention relates to a magnetic circuit for an electromagnetic pump, and how to keep the magnetic resistance value in the magnetic circuit as low as possible by using two coils and two magnets, and effectively reduce the attractive and repulsive forces of the magnet. The aim is to utilize this technology to reduce power consumption and create a compact and powerful pump.

Conventionally, the magnetic circuit of this type of pump was made by placing a permanent magnet at the opening of a U-shaped or E-shaped magnetic path, or by pairing the same type of magnets facing each other. In either case, the magnetic resistance of the magnetic circuit increases with the movement of the magnet, so a correspondingly large coil or magnetic circuit is required.

In other words, the magnetizing force generated by the two coils is connected in a positive polarity, the central magnetic path is opened, and the two permanent magnets arranged in a positive polarity are connected to a vibrator block (with non-magnetic material sandwiched between them).
5) to constantly maintain the magnetizing force [I] against the movement of the magnet.
This system maintains the tl life and allows the attraction and repulsion of the two magnets to act in the same direction of motion, eliminating the need for a repulsion spring, making it possible to create a magnetic circuit for a small and powerful pump.

The structure of the invention is such that two coils/14■ are provided in the main magnetic circuit (1) in FIG. This relates to the magnetic circuit of an electromagnetic pump.

Because of the above configuration, in the state shown in Figure 3(a), the polarity of the left magnet of the main magnetic path [d bed resonator block ■] is all attracted by the force l4, and the increase in magnetic resistance is do not have.

Next, when the alternating magnetic field is zero and the coil magnetizing force is zero in the state shown in Figure 3 (b), the vibrator block ■ is moved to the center of the main magnetic path by both magnets. In this state, the two magnets pass through a slight air gap in the magnetic path and form a magnetic path in the forward direction (there is no increase in magnetic resistance).

Next, when the alternating magnetic field is in the state shown in Figure 3(c), the vibrator block ■The right magnet will generate an attractive force, and the left magnet will immediately vibrate as shown in Figure 3(c). The child block ■ does not move and increase its magnetic resistance.

In this way, the magnet can efficiently vibrate (reciprocating motion) in response to the alternating magnetic field.
Because the two magnets operate in a well-balanced manner, there is no unnecessary noise, making it possible to create a quiet and powerful pump.

In addition, since the suction and repulsion forces can be generated electromagnetically and reliably in each cycle, there is no need for a repulsion spring like in conventional pumps, and a simple, efficient, small, and inexpensive electromagnetic pump can be manufactured, making it an industrially useful invention. .

DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of the basic magnetic circuit of the present invention excluding the magnet block.

FIG. 2 is a structural perspective view of the vibrator block.

FIG. 3 is a cross-sectional view illustrating the operating positions of a part of the main magnetic path and the vibrator block.

Figure 1

Claims (1)

[Claims] There are two coils (2) and (3) in the main magnetic circuit (1) in Figure 1.
) is provided with added polarity, a part of the magnetic path (4) between them is opened, and a non-magnetic material is sandwiched between two permanent magnets arranged with added polarity in that part as shown in Figure 2. 5), and insert the transducer block (5) movably so that it is located in the forward polar direction with respect to the main magnetic circuit (1), and respond to the alternating magnetic field of the main magnetic circuit (1). The oscillator block (5) is configured so that it can move so that the two magnets apply attraction and repulsion to each other in the same direction, and always add to the magnetomotive force generated by each coil in the main magnetic circuit. Magnetic circuit of electromagnetic pump.