DE20202639U1 - Side Channel Blowers - Google Patents

Description

PRINZ & PARTNERS"-obR ··"""

PATENT ATTORNEYS Manzingerweg 7

EUROPEAN PATENT ATrORNEYS D-81241 Munich

EUROPEANTRADEMARKATTORNEYS Tel. +49 89 89 69 80

Werner Rietschle GmbH + Co. KG
Roggenbachstr. 58
79650 Schopfheim

Our reference: R 1599 DE
JS

February 20, 2002

Side channel blower

5 '

The invention relates to a side channel compressor with a blower outlet.

Side channel compressors are used in numerous areas of application. Until now, it was very complex to replace a consumer connected to the blower outlet of a side channel compressor or to operate several connected consumers variably.

The invention provides a side channel compressor with flexible connection options for several consumers. According to the invention, a valve unit is coupled to the blower outlet, which has at least one permanently open permanent consumer connection and at least one additional connection

15, which can be opened or closed as required. This configuration makes it easy to use the side channel compressor to operate one or more additional consumers in addition to a permanent consumer, whereby the additional consumers can be switched on or off as required. The valve unit can also be removed again so that - as before

20 usual - a permanent consumer can be connected directly to the fan outlet.

In the preferred embodiment, a flow channel leads from the blower outlet to the permanent consumer connection, whereby the flow channel is connected to several additional connections via a first closable opening. This means that several additional consumers can be switched on or off simultaneously by simply opening and closing this opening.

Further features and advantages of the invention will become apparent from the following description of a preferred embodiment of the invention and from the drawings to which reference is made. In the drawings:

Figure 1 is a side view of a side channel compressor with a valve unit;

Figure 2 is a front view of the side channel compressor from Figure 1;

Figure 3a is a sectional view along the line A-A in Figure 2 with the additional connections opened; and

Figure 3b is a sectional view along section line A-A in Figure 2 with closed additional connections.

The side channel compressor shown in Figures 1 and 2 comprises a drive motor 10 and a compressor unit 12 with a blower outlet 14. A pre-assembled valve unit 16, which is operated via a magnetic circuit, is designed so that it can be connected directly to the blower outlet 14 of the compressor unit 12. The valve unit 16 can be fitted with or without a silencer (not shown). The valve unit 16 has a permanent consumer connection 18 and two additional connections 20a, 20b, so that a total of three consumers can be connected.

Figures 3a and 3b show the structure of the valve unit 16 and its coupling to the blower outlet 14 of the compressor unit 12. A flow channel 22 extends directly from the blower outlet 14 to the permanent consumer connection 18. The flow channel 22 is connected to a valve chamber 26 via a first valve opening 24, which in turn is connected to a valve chamber 26 via a second valve opening

28 is in flow connection with outlet openings 30. The outlet openings 30 lead to the outside and are under atmospheric pressure. The two additional connections 20a, 20b of the valve unit 16 open into the valve chamber 26.

A double valve body 32 is provided in the valve unit 16, which can be moved between two switching positions via a magnetically or pneumatically controllable actuating device 34. In the first switching position, the first valve opening 24 is open, while the second valve opening 28 is closed (Figure 3a). In the second switching position, the first valve opening 24 is closed, while the second valve opening 28 is open (Figure 3b). According to the first switching state shown in Figure 3a, in addition to the flow path from the blower outlet 14 to the permanent consumer connection 18, a second flow path from the blower outlet 14 via the valve chamber 26 to the two additional connections 20a, 20b is opened. The outlet openings 30, on the other hand, are sealed off. According to the second switching state shown in Figure 3 b, there is no flow connection between the flow channel 22 and the valve chamber 26, but there is between the valve chamber 26 and the outlet openings 30.

From the structure shown in Figures 3a and 3b it can be seen that a consumer connected to the permanent consumer connection 18 is permanently operated, while the two additional connections 20a, 20b can alternatively be pressurized or not via the magnetically or pneumatically operated valve unit 16. If the consumers connected to the additional connections 20a, 20b are depressurized according to Figure 3b, the consumers are immediately vented via the opened flow path from the additional connections 20a, 20b to the outlet openings 30. Such venting is important for applications in which the system pressure in the pipes or hoses of the consumers connected to the valve unit 16 must be quickly reduced.

It goes without saying that in alternative embodiments the number of permanent consumer and additional connections 18 or 20a, 20b on the valve unit 16 can vary.

Claims (8)

1. Side channel compressor with a blower outlet ( 14 ), characterized in that a valve unit ( 16 ) is coupled to the blower outlet ( 14 ), which has at least one permanently open continuous consumer connection ( 18 ) and at least one additional connection ( 20a , 20b ) which can be selectively opened or closed. 2. Side channel compressor according to claim 1, characterized in that a flow channel ( 22 ) leads from the blower outlet ( 14 ) to the permanent consumer connection ( 18 ), the flow channel ( 22 ) being in flow connection with the additional connection ( 20 a, 20 b) via a first closable opening ( 24 ). 3. Side channel compressor according to claim 2, characterized in that several additional connections ( 20 a, 20 b) are in flow connection with the flow channel ( 22 ) via the first closable opening ( 24 ). 4. Side channel compressor according to claim 2 or 3, characterized in that the additional connection or connections ( 20 a, 20 b) is or are connected to the atmosphere via a second closable opening ( 28 ). 5. Side channel compressor according to claim 4, characterized in that a double valve body ( 32 ) is provided which can be moved between two switching positions, wherein the double valve body ( 32 ) opens the first opening ( 24 ) and closes the second opening ( 28 ) in the first switching position and closes the first opening ( 24 ) and opens the second opening ( 28 ) in the second switching position. 6. Side channel compressor according to claim 5, characterized in that the double valve body ( 32 ) is moved via a magnetically controllable actuating device ( 34 ). 7. Side channel compressor according to claim 5, characterized in that the double valve body ( 32 ) is moved via a pneumatically controllable actuating device ( 34 ). 8. Side channel compressor according to one of the preceding claims, characterized in that the valve unit ( 16 ) is attached with a silencer to the blower outlet ( 14 ) of the compressor unit ( 12 ).