JPH02101348A - Exhauster - Google Patents

Abstract

PURPOSE: To open/close an exhauster simply and effectively by an arrangement wherein the height of a closing disc can be adjusted by means of an operating pin and the passing cross-section is closed or opened in relation to the level of the closing disc. CONSTITUTION: A sleeve 10 is disposed concentrically in a cover 3 at an upper casing part 2 and an operating pin is inserted through the opening. When a pressing force is applied through the operating pin to a hook pin 11 being born in a pin 7 projecting from a closing disc 8, a pin 9 is released to move the closing disc 8 from a position shown by a solid line to a position shown by a dot and dash line thus opening the passing cross-section between upper and lower casing parts 2, 1. When the hook pin 11 is depressed again, the closing disc 8 moves easily to the position shown by the solid line to close the passing cross-section between both casing parts 2, 1 thus sustaining the exhauster in rest state.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The invention relates to an exhaust device consisting of a casing with a lower casing part and an upper casing part each having a cylindrical shape, the lower casing part having an inflow opening. and in which the upper casing part, which has a larger diameter than the lower casing part, is provided with outlet openings that are evenly distributed over the edge area of the cover.

An evacuation device of this type which is suitable for integration into the bottom of a hollow chamber is known from the prior art, for example from DE-O 8 3417002. This exhaust device has a cylindrical upper casing part, called the air distribution head, on the underside of which a lower casing part, called the cup-shaped air intake, is rotatably arranged. .

A radial connection piece protrudes from the comb-shaped air intake for connecting an air hose.

Thereby, the air hose can always be guided linearly to the exhaust device in the hollow chamber, regardless of the arrangement of the legs. Furthermore, the known exhaust device has a height-adjustable perforated disk, which is used to vary the flow resistance of the exhaust device, the flow resistance being varied in this case by rotating the cover. .

In practice, it is often necessary to vary the number of actuated exhaust devices, for example distributed evenly over the bottom surface, depending on the utilization of the space in question. In this case, the given exhaust system is closed, and it is then necessary to partially disassemble the exhaust system in order to install the closing element in the exhaust system.

Problem to be Solved by the Invention The object of the invention is to improve an exhaust device of the type mentioned at the outset in such a way that it can be opened and closed effectively in a simple manner without disassembly and reassembly.

According to the invention, a closing disc is supported on the underside of the cover, which can be adjusted in height by means of an operating pin inserted through an opening in the cover. Possible, this was achieved in that the flow cross-section from the lower housing part to the upper housing part is blocked or opened depending on the level of the closing disc.

Advantages of the Invention With the closing disc according to the invention, the flow cross section from the lower housing part to the upper housing part can be blocked or opened in a simple manner in relation to the level of the closing disc.

In a further development of the invention, the closing disc engages a pin with its free end pointing downwards, and the lock is guided in a sleeve projecting from the bottom of the lower casing part;
In this case, a cylindrical spring is arranged about the pin which presses the closing disc in the direction towards the underside of the cover.

A cylindrical spring holds the closing disk at a distance over the flow cross section connecting the two housing parts, so that the exhaust device is brought into operation.

In a further development of the invention, a sleeve engages concentrically in the cover, through which an actuating pin can be inserted, by means of which the closing disc can be moved against the action of the cylindrical spring. It can be latched by being moved from above to below, and can be unlatched and moved from below to above.

This arrangement allows the closure disc to be selectively moved from an upper position in which it opens the exhaust system to a lower position in which it shuts off the exhaust system.

In a further development of the invention, the closing disc can be fixed in the lower blocking position by means of a known locking mechanism of the pin.

Such latching mechanisms are used, for example, in ballpoint pens, in which the ballpoint pen refill is mounted axially movably between two end positions and can be selectively moved to one or the other by a simple push-button operation. can be fixed in the terminal position.

The exemplary exhaust device essentially has a lower casing part 1 and an upper casing part 2 which are arranged concentrically with respect to each other, the upper casing part 2 in this case being connected to the lower casing part 1.
It is constructed with a larger diameter.

The lower housing part 1 is provided with an inlet opening (not shown) through which supply air can flow from the hollow bottom into the exhaust device.

The upper housing part 2 is closed off by a cover 3, in the edge area of which slit-like outflow openings 4 are arranged evenly distributed.

In particular, as is clear from Figure 2, the lower casing part 1
has a concentric sleeve 6 projecting from the web 5, into which two noars are guided which support a closing disc 8 at the end opposite the sleeve 6. The closing disc 8 is movable via a coil spring 9 arranged around the pin 7 from the position shown in solid lines in FIG. 2 to the position shown in dashed lines.

A sleeve 10 is provided concentrically within the cover 3 of the upper casing part 2, and an operating pin (not shown) is inserted through the opening of this sleeve 10, but the shape of this operating pin is unknown. No similar requirements have been imposed. If a pressing force is applied via the actuating pin inserted through the sleeve 10 to the latching pin 11 which projects from the closing disc 8 and is supported in the ring γ, the latching of the pin 9 is released. , the closing disc 8 together with the pin 9 moves from the position shown in solid lines to the position shown in dash-dotted lines, whereby the flow cross section between the lower housing part 1 and the upper housing part 2 is opened. By pressing the latching pin 11 again, the closing disc 8 can likewise be easily moved from the position shown in dash-dotted lines to the position shown in solid lines in FIG. 2, so that the flow cross section between the two casing parts is is shut off and thus the exhaust system remains dormant until the closing disc 8 is moved again.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a plan view of an exhaust device, and FIG. 2 is a sectional view of the exhaust device taken along line 1 in FIG. 1. DESCRIPTION OF SYMBOLS 1... Lower casing part, 2... Upper casing part, 3... Cover 4... Outflow opening, 5... Web, 6... Sleeve, 7... Pin, 8... Closing disc, 9... Coil spring, 10... Sleeve, 1
1...Lower pin casing part 2 Upper canong part Fig, 1 1 Lower cane knob part 2 Upper cane knob part Fig, 2 3 Cover 8 Closing disc

Claims (1)

[Claims] 1. An exhaust device consisting of a casing having a lower casing part and an upper casing part, each of which is cylindrical, the lower casing part having an inlet opening and having a lower casing part than the lower casing part. In a version in which the large-diameter upper casing part is provided with outlet openings distributed evenly over the edge area of the cover, a closing disk is supported on the underside of the cover (3), This closing disc is height-adjustable by means of an operating pin inserted through an opening in the cover (3), so that the lower casing part (1)
) to the upper casing part (2) can be shut off or opened depending on the level of the closing disc (8). 2. The closing disc (8) engages a pin (7) with its free end directed downwards, which pin is guided in a sleeve (6) projecting from the bottom (5) of the lower casing part. The closing disc (
2. Exhaust device according to claim 1, characterized in that a cylindrical spring (9) is arranged which pushes the cover (8) in a direction towards the underside of the cover (3). 3. A sleeve (10) engages concentrically in the cover (3), through which an actuating pin can be inserted, by means of which the closing disc is pressed against the cylindrical spring (
The exhaust device according to claim 1 or 2, wherein the exhaust device is movable from above to below and latched against the action of 9), and is unlatched and movable from below to above. 4. When the closing disc (8) is in the lower blocking position, press the pin (9)
4. Exhaust device according to claim 1, wherein the exhaust device is lockable by means of a latching mechanism known per se.