Exhaust module for an electric switch, device consisting of two such exhaust modules and switch cabinet with such a device

Description

[0001] The invention relates to a device comprising two exhaust modules for electrical switches and a switch cabinet with such a device.

[0002] When circuit breakers are short-circuited, switching gases are produced that carry contaminants. These contaminants can be metal beads or soot particles, for example. These contaminants are distributed throughout the entire system in the event of a short circuit. Affected control cabinets and distribution boards often require extensive cleaning, which can lead to system downtime. Likewise, electrical devices or cables in these distribution boards can be affected by metal beads carried by the switching gases, for example, causing short circuits. Overall, these contaminants can lead to system downtime, either due to necessary cleaning steps or due to maintenance work to rectify short circuits.

[0003] The circuit breaker assembly of EP 2 641 255 B1 comprises a housing, a tripping mechanism, a vent channel, and a chamber. The tripping mechanism positioned in the housing can cause a moving contact to separate from a second contact when the circuit breaker assembly detects an electrical fault. The vent channel is formed in the housing and positioned to vent gas and debris generated when the moving contact separates from the second contact during the electrical fault into an opening in the housing. The chamber has a chamber housing connected to the housing adjacent to the opening so that the chamber contains the gas and debris escaping from the opening.

[0004] ES 2 525 035 T3 discloses a pole connector for a group of series-connected circuit breakers mounted on a busbar, manufactured in the form of a conductive aluminum element comprising connection terminals and cooling fins of a length arranged in the front part of the connector, with additional cooling fins of a length forming a fragment of the conductive element and located in the rear part of the connector and on the outside.

[0005] The switching device of EP 2 081 202 A2 has at least two switching contacts for interrupting a current path. The switching contacts are arranged in an arcing chamber for extinguishing an arc (LB) generated upon opening. The arcing chamber opens into a gas outlet channel for the escape of excess pressure (P1) generated when the arc (LB) is drawn. A pressure sensor is provided in the gas outlet channel to detect the pressure. When a predeterminable pressure value is reached, this sensor triggers a switch mechanism of the switching device that is at least indirectly connected to it.

[0006] It is an object of the present invention to provide an exhaust module for mounting on an electrical switch, which can be easily mounted in a switch panel with various electrical switches and simply provides a modular exhaust system.

[0007] The object of the invention is achieved by the device according to claim 1. Advantageous embodiments of the device according to the invention are specified in subclaims 2 to 6. The object of the invention is also achieved by the control cabinet according to claim 7. An advantageous embodiment of the control cabinet according to the invention is specified in claim 8.

[0008] The exhaust gas module for an electrical switch is designed such that the electrical switch has outlets of switching gases on its output side and / or on its input side, wherein the exhaust gas module can be mounted on the electrical switch such that the switching gases are directed into an exhaust gas duct of the exhaust gas module, wherein the exhaust gas duct deflects the switching gases substantially at right angles and the exhaust gas duct can cooperate modularly with an adjacent exhaust gas duct of an adjacent exhaust gas module in order to bring together the deflected switching gases.

[0009] The advantage here is that after a short circuit, the soot and contact burn-off particles are guided out of the switch in a defined manner, thus preventing a control cabinet or distribution board from becoming dirty and thus also avoiding the need for cleaning.

[0010] In one embodiment of the exhaust gas module, an exhaust gas duct is arranged on the outlet side and / or on the inlet side of the electrical switch.

[0011] In a further embodiment of the exhaust module, the exhaust duct comprises ribs which isolate the switching gases from each other pole by pole.

[0012] In one embodiment of the exhaust module, barriers are arranged on the exhaust duct, which can insulate electrical lines from each other in the case of the exhaust module mounted on the electrical switch.

[0013] The device according to claim 1 comprises a first exhaust module and a second exhaust module, wherein the first exhaust module is mounted adjacent to the second exhaust module, so that the respective exhaust channels are modularly integrated and thereby the deflected switching gases are brought together.

[0014] In one embodiment of the device according to the invention, a first electrical switch is mounted on the first exhaust module and a second electrical switch is mounted on the second exhaust module. In a further embodiment of the device according to the invention, the first electrical switch and / or the second electrical switch is a circuit breaker.

[0015] The switch cabinet according to claim 7 has a device according to the invention, wherein the device is fastened to a wall of the switch cabinet and the combined switching gases are led out of the switch cabinet.

[0016] In one embodiment of the switch cabinet according to the invention, the combined switching gases are led out of the switch cabinet via a flexible channel.

[0017] The above-described properties, features and advantages of this invention, as well as the manner in which they are achieved, will become clearer and more clearly understood in connection with the following description of the embodiments, which are explained in more detail in connection with the figures.

[0018] Showing: Figure 1: Exhaust module mounted on an electrical switch (not within the scope of the claims); Figure 2: Cross-section through the exhaust module (not within the scope of the claims); Figures 3A and 3B: Exhaust module with mounted electrical switch on a wall of a switch cabinet (not within the scope of the claims); Figures 4A and 4B: Device according to the invention with exhaust channels and ribs as well as barriers; Figure 5: Device according to the invention comprising a first exhaust module and a second exhaust module; Figures 6A and 6B: Device according to the invention comprising a first exhaust module and a second exhaust module as well as a duct cover on the exhaust module; Figure 7: Device according to the invention with a first exhaust module and a second exhaust module as well as a first electrical switch and a second electrical switch; and Figure 8: Device according to the invention with a first exhaust module and a second exhaust module as well as a first electrical switch and a second electrical switch.

[0019] In Figure 1An exhaust gas module 100 for an electrical switch 1000 is shown. The electrical switch 1000 has outlets for switching gases on its output side 1010 and / or on its input side 1020. In the illustration of the Figure 1 the exhaust module 100 is mounted on an electrical switch 1000 so that the switching gases are directed into an exhaust duct 150 of the exhaust module 100.

[0020] The exhaust duct 150 deflects the switching gases essentially at a right angle and can cooperate modularly with an adjacent exhaust duct 150 of an adjacent exhaust module 101 to combine the deflected switching gases. This will be explained in more detail with reference to the Figures 4A and 4B , 5 , 6A and 6B , 7 and 8 be explained.

[0021] The exhaust module 100 is mounted on a wall 200C of a control cabinet. The combined switching gases can be discharged from the control cabinet via a flexible duct 222.

[0022] In Figure 2 The exhaust module 100 is shown mounted on the electrical switch 1000 in a sectional view. Also shown are the wall 2000 of the switch cabinet and the flexible duct 222, which carries the combined switching gases out of the switch cabinet.

[0023] The Figures 3A and 3B show the exhaust module 100 mounted on the wall 2000 of the control cabinet and with flexible duct 222 from different sides.

[0024] In the exhaust module 100, an exhaust duct 150 is arranged on the outlet side 1010 or on the inlet side 1020 of the electrical switch 1000; it is also possible for the exhaust module 100 to comprise an exhaust duct 150 on the outlet side 1010 and on the inlet side 1020 of the electrical switch.

[0025] In the Figures 4A and 4BA device according to the invention comprising two exhaust modules 100, 101 is shown. The exhaust duct 150 deflects the switching gases essentially at a right angle, and the exhaust duct 150 interacts modularly with an adjacent exhaust duct 151 of an adjacent exhaust module 101 to combine the deflected switching gases.

[0026] The exhaust duct 150 comprises ribs 171, 172 that isolate the switching gases from each other pole by pole. Barriers 161, 162, 163, 164 can also be arranged on the exhaust duct 150, which can isolate electrical lines 191, 192, 193 from each other in the case of the exhaust module 100 mounted on the electrical switch 1000.

[0027] According to the presentation of the Figures 4A and 4B the barriers 161, 162, 163, 164 can be arranged directly above or below the exhaust duct 150 in one plane.

[0028] The device according to the invention thus comprises a first exhaust module 100 and a second exhaust module 101, wherein the first exhaust module 100 is mounted adjacent to the second exhaust module 101, so that the respective exhaust channels 150, 151 are modularly integrated and the diverted switching gases are thereby combined. According to the representation of the Figures 4A and 4B An electrical switch 1000 is mounted on the first exhaust module 100 and a second electrical switch 1001 is mounted on the second exhaust module 101.

[0029] The first electrical switch 1000 may be a circuit breaker, and the second electrical switch 1001 may also be a circuit breaker.

[0030] Figure 5 shows in more detail the device according to the invention comprising the first exhaust module 100 and the second exhaust module 101. The respective exhaust channels 150, 151 are modularly integrated, whereby the diverted switching gases are combined.

[0031] In Figure 6AThe device according to the invention comprising the first exhaust module 100 and the second exhaust module 101 is also shown, and the first electrical switch 1000 and the second electrical switch 1001 are mounted thereon. Figure 6B The first exhaust module 100 with the first exhaust duct 150 and the second exhaust module 101 with the second exhaust duct 151 are shown. Furthermore, covers 600, 601 are shown, which close the respective exhaust ducts 150, 151 and thus ensure that the exhaust modules 100, 101 withstand the cut-off pressure of the electrical switches 1000, 1001 and that as little gas as possible escapes to the outside or to the adjacent pole due to leaks in the exhaust ducts 150, 151.

[0032] Figure 7shows the device according to the invention comprising a first exhaust module 100 and a second exhaust module 101. Barriers 161, 162, 163, 164 are arranged on the exhaust duct 150, which insulate electrical lines 191, 192, 193 from one another like busbars when the electrical switch 1000 is mounted.

[0033] Figure 8 shows the underside of the representation of the device according to the invention of Figure 7 . The respective exhaust gas channels 150, 151 of the first exhaust gas module 100 and the second exhaust gas module 101 are modularly integrated, whereby the diverted switching gases are combined.

[0034] The modular exhaust modules 100, 101 with exhaust ducts 150, 151 are designed so that their exhaust gases or switching gases can flow into the adjacent duct and are thus guided from one exhaust module to the next until they are finally discharged from a control cabinet at any desired location. This ensures that after a short circuit of the electrical switch, the resulting soot and contact burn-off particles are guided out of the control cabinet in a defined manner, preventing the control cabinet from becoming contaminated and therefore requiring no cleaning.

Claims

1. Device formed by a first exhaust gas module (100) and a second exhaust gas module (101), wherein the first exhaust gas module (100) is mounted adjacent to the second exhaust gas module (101) such that respective exhaust gas channels (150, 151) grip one inside the other in modular fashion and the deflected switching gases are thereby brought together, wherein the exhaust gas modules (100, 101) are each provided for an electrical switch (1000, 1001), wherein the electrical switch (1000, 1001) has outlets for switching gases on its output side (1010) and / or on its input side (1020), wherein each exhaust gas module (100, 101) can be mounted on the respective electrical switch (1000, 1001) such that the switching gases are directed into an exhaust gas channel (150) of the exhaust gas module (100, 101), wherein the exhaust gas channel (150) of the first exhaust gas module (100) deflects the switching gases substantially at a right angle, and the exhaust gas channel (150) interacts in a modular manner with the neighbouring exhaust gas channel (151) of the neighbouring exhaust gas module (101) in order to bring together the deflected switching gases.

2. Device according to Claim 1, in which an exhaust gas channel (150) can be arranged on the output side (1010) and / or on the input side (1020) of the electrical switch (1000, 1001).

3. Device according to Claim 1 or 2, in which the exhaust gas channel (150) comprises ribs (171, 172) which can isolate the switching gases from one another pole by pole.

4. Device according to one of the preceding claims, in which barriers (161, 162, 163, 164) are arranged at the exhaust gas channel (150), said barriers being able to isolate electrical lines (191, 192, 193) from one another in the event of the exhaust gas module (100, 101) being mounted on the electrical switch (1000, 1001).

5. Device according to Claim 1, wherein a first electrical switch (1000) is mounted on the first exhaust gas module (100), and wherein a second electrical switch (1001) is mounted on the second exhaust gas module (101).

6. Device according to Claim 5, wherein the first electrical switch (1000) and / or the second electrical switch (1001) is a circuit breaker.

7. Switch cabinet comprising a device according to one of Claims 1 to 6, wherein the device is fastened to a wall (2000) of the switch cabinet, and the switching gases which have been brought together are guided out of the switch cabinet.

8. Switch cabinet according to Claim 7, in which the switching gases which have been brought together are guided out of the switch cabinet via a flexible channel (222).