DE8122757U1 - SOLENOID VALVE FOR A SIDE CHANNEL COMPRESSOR - Google Patents

Description

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'SIEMENS AKTIENGESELLSCHAFT Our mark

Berlin and Munich VPA 81 G 3 1 1 8 QE

Solenoid valve for a side channel blower

The innovation relates to a solenoid valve for a side channel blower, with which, depending on the position, one a flow path between the compressor connection opening and a slide valve movable by an electromagnet one of two further valve connection openings can be produced.

Reversing valves are already known with which the suction or pressure opening of a side channel ring compressor are partially connectable to the atmosphere or a connection opening. The production of the individual flow paths is done by e.g. rotary slides or valve disks, which release the individual openings (see e.g. DE-GM 73 41 583).

The known arrangements often have a relatively high flow resistance and do not work at high pressures always completely satisfactory, e.g. there is valve flutter.

In addition, it is often disadvantageous that the connection to the two compressor openings is required at the same time is not always easy to construct.

30th

The task of the present innovation is to create a simple solenoid valve that is optionally can be attached to the suction and / or pressure side of the ring compressor.

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Ch 2 you / 07/28/1981

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This object is achieved according to the invention by a tubular valve body arranged in the wall and connection openings offset from one another in the longitudinal direction of the pipe, a compressor connection opening a pipe end and a movable inside the valve body and adapted to the inner diameter hollow cylindrical control slide, which in each axial end position just sealing one of the connection openings. The open control spool results in pressure equalization, so that small magnetic forces are sufficient to

Hold valve in one end position; there does not have to be a counter-V pressure can be overcome by a magnet.

The valve according to the innovation can either be assigned to the suction or the pressure side alone or it can such valves are also provided for both openings. This makes it easy to use Valves also for two-stage side channel blowers possible with suction and pressure ports offset by 90 °.

The innovation will be explained in more detail using a drawing; show it:

Figure 1 shows a cross section through the solenoid valve and Figures 2 to 8 arrangement examples for the solenoid valve with regard to ring compressor and consumer connection.

As can be seen from Figure 1, the solenoid valve consists of a tubular valve body 1, on one of which At the end of the compressor connection opening 6 is located. The valve is by means of the flange 11 on the suction or Pressure side of the side channel ring compressor, not shown screwable. On the side opposite the compressor connection opening 6 is an electromagnetic one Lifting magnet 2 is provided, which via a shaft 21 has a hollow cylindrical control slide 3 in the direction of the double arrow 7 can move. The connection from the shaft 21 of the lifting magnet to the cylinder jacket 32 is

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made by webs 31, which leave a sufficient air passage cross-section. In one The axial end position shown of the control slide 3 is the compressor connection opening 6 with the one in the wall of the valve body 1 is connected to the connection opening 4, i.e., for example, with the atmospheric air. In the In the other axial end position of the control slide 3, the compressor connection 6 is connected to the valve opening 5, to which e.g. a consumer can be connected. The two valve openings arranged in the wall 4 and 5 are offset from one another in the axial direction and have a diameter that is slightly smaller than the axial extension of the cylinder of the control shear 3 is. Due to the construction shown, no opposing forces have to be overcome when the slide is moved .

In Figures 2 to 8, various possible combinations of the solenoid valve are described in more detail, where- at 4 and 5 the connection openings on the wall, 6 the compressor connection opening and 8 the direction of flow the air. In the example according to FIG. 2, the valve is on the suction side of the side channel compressor, not shown arranged, e.g. in use for suction lifters or for holding processes.

In the arrangement according to Figure 3, the valve is arranged on the pressure side, e.g. to generate air cushions for paper cutting tables or the like.

30th

In FIG. 4, the valve assigned to the pressure side of the ring compressor, not shown, is switched so that Compressed air can be generated alternately on two lines, e.g. for pneumatic conveying.

35

FIG. 5 corresponds to the arrangement according to FIG. 4 with the only difference that here the solenoid valve is on the suction side

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In FIG. 6 there is a valve A on the suction side and a valve B on the pressure side of the side channel ring valve, not shown intended. A pipe connection with vacuum or compressed air can either be switched over which is of interest e.g. for pneumatic tube systems and pneumatic conveyor systems.

Figure 7 also shows two solenoid valves A and B, at the two openings of which either compressed air or Vacuum can be generated.

Figure 8 shows the use of three solenoid valves A, B, C, as a result, two lines can be supplied either with vacuum or with compressed air, which is e.g. for pneumatic tube systems or pneumatic conveying is of interest.

As can be seen from the above, the valve according to the invention can be used in a multitude of applications possible, simply through a certain combination of valves.

2 claims for protection
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summary Solenoid valve for a side channel blower

The innovation concerns a solenoid valve for a side channel ring compressor. In the wall of the tubular valve body (1) there are mutually offset connection openings (4, 5) provided, depending on the position of a hollow cylindrical control slide (3) with the compressor connection opening (6) can be connected at the end of the pipe.

(Figure 1)

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Claims (2)

r η r »r with ti * · · let · · · ι · a • · · ■ ·. · »Lii i t O - 5 - VPA 81 63 118DE protection claims 1. Solenoid valve for a side channel compressor, with which, depending on the position of one, is controlled by an electromagnet movable slide a flow path between the compressor connection opening and one of two other Valve connection openings can be produced, characterized by a tubular Valve body (1) with connection openings arranged in the wall and offset from one another in the longitudinal direction of the pipe (4, 5), a compressor connection opening (6) () one end of the pipe and one inside the valve body (1) movable and adapted to its inner diameter hollow cylindrical control slide (3), which in each axial end position just one of the connection openings (4, 5) seals. 2. Solenoid valve according to claim 1, characterized in that that the cylinder (31) of the control slide (3) via webs (31) with the push rod (21) of the electromagnet (2) attached to the other end of the valve body (1).