Gas discharge device and circuit breaker

Abstract

A gas exhaust device and a circuit breaker relate to the technical field of low-voltage apparatuses. The gas exhaust device comprises a shell, and an arc extinguish chamber and an exhaust structure which are respectively connected to the shell, the shell is provided with an exhaust channel located on the side, away from the arc extinguish chamber, of the exhaust structure. The exhaust structure is provided with a first exhaust hole group and a second exhaust hole group, one ends of the first exhaust hole group and the second exhaust hole group are respectively communicated with the arc extinguish chamber, and the other ends are respectively communicated with the exhaust channel; the second exhaust hole set is located between the first exhaust hole set and the outlet of the exhaust channel, and the air outlet area of any exhaust hole of the second exhaust hole set is smaller than that of any exhaust hole of the first exhaust hole set. According to the gas exhaust device, high-temperature gas can be rapidly exhausted, and the problem of gas backflow in the prior art can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage electrical appliances, and in particular, to a gas discharge device and a circuit breaker. Background Art

[0002] During the process of a circuit breaker interrupting a fault current, the moving and static contacts quickly disconnect. At this time, the voltage between the moving and static contacts causes the air medium to discharge and generate a high-temperature arc. An arc is a high-temperature ionized gas, which will cause great damage to the moving and static contacts of the circuit breaker. If the arc is not extinguished in time, it may cause damage to the circuit breaker, and more seriously, it may lead to safety accidents. Therefore, generally, a circuit breaker is equipped with an arc extinguishing chamber, which is the core component of the circuit breaker. It can rely on multiple arc extinguishing grid plates to divide the arc into multiple short arcs, thereby quickly extinguishing the arc and protecting the circuit breaker.

[0003] In the prior art, small circuit breakers are provided with exhaust holes on the back of the arc extinguishing chamber. The exhaust holes can discharge the high-temperature expansion gas generated by the arc combustion out of the circuit breaker housing. However, due to the unreasonable design of the current gas discharge device for discharging gas, after the arc is blown into the arc extinguishing chamber, some of the gas flow will have phenomena such as slow gas discharge and gas backflow. These reflux gases return to between the moving and static contacts along the gas path, and carry high temperature and charged particles, which will increase the probability of breakdown between the contacts and reduce the breaking performance of the circuit breaker. Therefore, how to design a new gas discharge device to solve the problem of gas reflux is important and urgent. Summary of the Invention

[0004] The purpose of the present invention is to provide a gas discharge device and a circuit breaker, which can quickly discharge high-temperature gas and can improve the problem of gas reflux in the prior art.

[0005] The embodiments of the present invention are implemented as follows:

[0006] On the one hand, the present invention provides a gas discharge device, which includes a housing, and an arc extinguishing chamber and an exhaust structure respectively connected to the housing; an exhaust channel is provided on the housing on the side of the exhaust structure away from the arc extinguishing chamber; the exhaust structure is provided with a first exhaust hole group and a second exhaust hole group. One end of the first exhaust hole group and the second exhaust hole group is respectively communicated with the arc extinguishing chamber, and the other end is respectively communicated with the exhaust channel; the second exhaust hole group is located between the first exhaust hole group and the outlet of the exhaust channel, and the outlet area of any exhaust hole in the second exhaust hole group is smaller than the outlet area of any exhaust hole in the first exhaust hole group. This gas discharge device can quickly discharge high-temperature gas and can improve the problem of gas reflux in the prior art.

[0007] Optionally, a first guiding member is provided near the first exhaust hole group of the housing, and the first guiding member is used to guide the gas discharged from the first exhaust hole group toward the outlet of the exhaust passage.

[0008] Optionally, the gas flow direction of the exhaust passage is parallel to the length direction of the housing or parallel to the height direction of the housing.

[0009] Optionally, the second exhaust hole group includes two sets, and the two sets of second exhaust hole groups are respectively arranged on opposite sides of the first exhaust hole group.

[0010] Optionally, the exhaust structure includes a plurality of exhaust plates arranged at intervals along a first direction. The gap between two adjacent exhaust plates forms an exhaust hole. A plurality of exhaust holes near the outlet of the exhaust passage form the second exhaust hole group, and a plurality of exhaust holes away from the outlet of the exhaust passage form the first exhaust hole group; the first direction is parallel to the arrangement direction of the arc extinguishing grids of the arc extinguishing chamber.

[0011] Optionally, the exhaust structure further includes an insulating member, which is connected to the exhaust structure near the second exhaust hole group and at least partially embedded in the exhaust holes of the second exhaust hole group.

[0012] Optionally, the exhaust structure further includes an insulating boss protruding from the housing, and a plurality of exhaust plates are respectively arranged on the insulating boss.

[0013] Optionally, the exhaust structure includes an insulating fence provided on the housing. The insulating fence is located between the arc extinguishing chamber and the exhaust passage, and the first exhaust hole group and the second exhaust hole group are respectively arranged on the insulating fence.

[0014] Optionally, the exhaust structure includes an insulating cover shell covering the periphery of the arc extinguishing chamber, and the first exhaust hole group and the second exhaust hole group are respectively arranged on one side of the insulating cover shell close to the exhaust passage.

[0015] On the other hand, the present invention provides a circuit breaker, which includes the above-mentioned gas discharge device.

[0016] The beneficial effects of the present invention include:

[0017] The gas discharge device provided by the present application includes a housing, as well as an arc extinguishing chamber and an exhaust structure respectively connected to the housing; an exhaust passage is provided on the housing on the side of the exhaust structure away from the arc extinguishing chamber; the exhaust structure is provided with a first exhaust hole group and a second exhaust hole group, one ends of the first exhaust hole group and the second exhaust hole group are respectively communicated with the arc extinguishing chamber, and the other ends are respectively communicated with the exhaust passage; the second exhaust hole group is located between the first exhaust hole group and the outlet of the exhaust passage, and the outlet area of any exhaust hole in the second exhaust hole group is smaller than the outlet area of any exhaust hole in the first exhaust hole group. By providing the first exhaust hole group and the second exhaust hole group with different exhaust hole sizes on the exhaust structure in the present application, and making the exhaust hole sizes of the exhaust hole group closer to the outlet of the exhaust passage smaller than those of the exhaust hole group farther from the outlet of the exhaust passage, in this way, during the process that the gas is discharged from the first exhaust hole group and moves along the exhaust passage, a negative pressure area will be formed, thereby sucking the gas in the second exhaust hole group, so that the gas in the second exhaust hole group is quickly sucked into the exhaust passage. Thus, it is possible to prevent the gas in the exhaust passage from flowing back into the arc extinguishing chamber, and it is possible to prevent the gas in the arc extinguishing chamber from entering the exhaust passage and hindering the normal flow of the gas in the exhaust passage. Through this setting method, the present application can quickly discharge the high-temperature gas and can improve the problem of gas backflow in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0019] Figure 1 It is one of the schematic structural diagrams of the gas discharge device provided by the embodiment of the present invention;

[0020] Figure 2 It is the second schematic structural diagram of the gas discharge device provided by the embodiment of the present invention;

[0021] Figure 3 It is the schematic structural diagram of the arc extinguishing chamber and the exhaust structure provided by the embodiment of the present invention;

[0022] Figure 4 It is one of the schematic structural diagrams of the housing provided by the embodiment of the present invention;

[0023] Figure 5 It is the third schematic structural diagram of the gas discharge device provided by the embodiment of the present invention;

[0024] Figure 6 It is the fourth schematic structural diagram of the gas discharge device provided by the embodiment of the present invention;

[0025] Figure 7 This is the second structural schematic diagram of the housing provided by the embodiment of the present invention;

[0026] Figure 8 This is the fifth structural schematic diagram of the gas discharge device provided by the embodiment of the present invention;

[0027] Figure 9 This is the structural schematic diagram of the arc extinguishing chamber and the insulating housing provided by the embodiment of the present invention.

[0028] Icon: 10 - housing; 11 - exhaust passage; 20 - arc extinguishing chamber; 21 - arc extinguishing grid; 30 - exhaust structure; 31 - first exhaust hole group; 32 - second exhaust hole group; 33 - exhaust plate; 331 - exhaust hole; 34 - insulating fence; 35 - insulating housing; 40 - first guide; a - first direction; 50 - insulating member; 60 - insulating boss; 100 - handle. Detailed implementation manners

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0031] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Driven by intelligent and automated high-tech, the smart home industry has entered a period of rapid development. The smart home industry is facing new challenges and opportunities in the transformation of technology, market and industry.

[0036] According to the function, the smart home can be divided into eight modules: entertainment system, security system, control system, lighting system, kitchen and bathroom appliance system, network and communication system, health care system, and indoor environment system. The eight modules work together to realize the whole house intelligence.

[0037] Please refer to Figure 1 and Figure 2, this embodiment provides a gas discharge device, which includes a housing 10, an arc extinguishing chamber 20 and an exhaust structure 30 respectively connected to the housing 10; an exhaust passage 11 is provided on the housing 10 on the side of the exhaust structure 30 away from the arc extinguishing chamber 20; the exhaust structure 30 is provided with a first exhaust hole group 31 and a second exhaust hole group 32, one ends of the first exhaust hole group 31 and the second exhaust hole group 32 are respectively communicated with the arc extinguishing chamber 20, and the other ends are respectively communicated with the exhaust passage 11; the second exhaust hole group 32 is located between the first exhaust hole group 31 and the outlet of the exhaust passage 11, and the outlet area of any exhaust hole 331 of the second exhaust hole group 32 is smaller than the outlet area of any exhaust hole 331 of the first exhaust hole group 31. This gas discharge device can quickly discharge high-temperature gas and can improve the problem of gas backflow in the prior art.

[0038] The gas discharge device provided by this application includes a housing 10, an arc extinguishing chamber 20 and an exhaust structure 30. Among them, an exhaust passage 11 is provided on the housing 10, and the exhaust passage 11 is used to discharge the gas discharged from the exhaust structure 30 to the outside of the housing 10 through it.

[0039] In this embodiment, the above-mentioned housing 10 can be a square housing 10 or a convex-shaped housing 10, and this application does not limit this. In addition, an outlet communicated with the exhaust passage 11 should also be provided on the housing 10, and this outlet is used to discharge the gas in the exhaust passage 11. Among them, the number of outlets of the exhaust passage 11 can be one, two or more, and this application does not limit this and can be determined according to actual needs.

[0040] Furthermore, the setting position of the exhaust passage 11 can refer to Figure 1 and Figure 4 (or Figure 5 、 Figure 8 ) shown, and it is located at the outlet of the arc extinguishing chamber 20. The outlet of the exhaust passage 11 can be set on one side below the arc extinguishing chamber 20 (when the second exhaust hole group 32 includes two groups, the outlets of the exhaust passage 11 are set on the opposite sides below the arc extinguishing chamber 20, corresponding to Figure 1 in, then the two outlets are respectively located on the left and right sides of the exhaust passage 11); or, the outlet of the exhaust passage 11 can also be set on the side of the housing 10 away from the handle 100 (that is, on the bottom side of the housing 10, as shown in Figure 5 and Figure 8 shown).

[0041] The above-mentioned arc extinguishing chamber 20 is provided at the air inlet of the exhaust structure 30. In this way, the high-temperature gas discharged from the arc extinguishing chamber 20 can directly enter the exhaust structure 30. The specific structure of the arc extinguishing chamber 20 is not limited in this application, and those skilled in the art can design it by themselves as long as the arc extinguishing chamber 20 can extinguish the arc and discharge the high-temperature gas generated during the arc combustion.

[0042] The exhaust structure 30 is located between the outlet side of the arc extinguishing chamber 20 and the inlet side of the exhaust passage 11. In this way, the exhaust structure 30 can lead the gas discharged from the arc extinguishing chamber 20 into the exhaust passage 11. In this embodiment, as Figure 3 or Figure 5 or Figure 8 shown, the exhaust structure 30 is provided with a first exhaust hole group 31 and a second exhaust hole group 32. Among them, the first exhaust hole group 31 and the second exhaust hole group 32 are respectively arranged through the exhaust structure 30.

[0043] The air inlet of the first exhaust hole group 31 is communicated with the outlet of the arc extinguishing chamber 20, and the air outlet of the first exhaust hole group 31 is communicated with the inlet of the exhaust passage 11. Similarly, the air inlet of the second exhaust hole group 32 is communicated with the outlet of the arc extinguishing chamber 20, and the air outlet of the second exhaust hole group 32 is communicated with the inlet of the exhaust passage 11. In this way, the exhaust structure 30 can introduce the gas discharged from the arc extinguishing chamber 20 into the exhaust passage 11 through the first exhaust hole group 31 and the second exhaust hole group 32.

[0044] In this embodiment, the second exhaust hole group 32 and the first exhaust hole group 31 are arranged side by side, and the second exhaust hole group 32 is located between the first exhaust hole group 31 and the outlet of the exhaust passage 11 (that is, the second exhaust hole group 32 is closer to the outlet of the exhaust passage 11 relative to the first exhaust hole group 31). Moreover, in this embodiment, the outlet area of any exhaust hole 331 of the second exhaust hole group 32 is smaller than the outlet area of any exhaust hole 331 of the first exhaust hole group 31. In this way, after the gas is discharged from the arc extinguishing chamber 20 and enters the first exhaust hole group 31 and the second exhaust hole group 32 of the exhaust structure 30, since the outlet area of the exhaust hole 331 of the first exhaust hole group 31 is larger than the outlet area of the exhaust hole 331 of the second exhaust hole group 32, thus, during the process that the gas is discharged from the first exhaust hole group 31 and moves along the exhaust passage 11, a negative pressure area will be formed, which will thus form a suction force on the gas in the second exhaust hole group 32, so that the gas in the second exhaust hole group 32 can be quickly sucked out into the exhaust passage 11 (the Venturi effect is utilized here), and then discharged from the outlet of the exhaust passage 11. Such a setting can avoid the gas in the exhaust passage 11 from flowing back into the arc extinguishing chamber 20, and can also avoid the gas in the arc extinguishing chamber 20 from hindering the normal flow of the gas in the exhaust passage 11 after entering the exhaust passage 11. Through this setting method, the transfer of the gas can be made faster and smoother.

[0045] Moreover, in this embodiment, the first exhaust hole group 31 and the second exhaust hole group 32 can respectively include a plurality of exhaust holes 331 that are evenly distributed. In this way, the discharge of the gas is more uniform and convenient.

[0046] In addition, it should be noted that the gas discharge device provided in this application includes two sets of exhaust hole groups (i.e., the first exhaust hole group 31 and the second exhaust hole group 32), but is not limited thereto. For example, this application may also include more than two sets of exhaust hole groups, such as three sets of exhaust hole groups, four sets of exhaust hole groups, etc. When this application includes multiple sets of exhaust hole groups, the multiple sets of exhaust hole groups can be arranged side by side, and in the gas flow direction from the exhaust channel 11, the sizes of the exhaust holes of each of the multiple sets of exhaust hole groups decrease in sequence. For example, when this application further includes a third exhaust hole group, the third exhaust hole group can be located between the first exhaust hole group 31 and the second exhaust hole group 32, and the outlet area of any exhaust hole 331 of the third exhaust hole group is smaller than the outlet area of any exhaust hole 331 of the first exhaust hole group 31 and larger than the outlet area of any exhaust hole 331 of the second exhaust hole group 32.

[0047] In summary, the gas discharge device provided in this application includes a housing 10, as well as an arc extinguishing chamber 20 and an exhaust structure 30 respectively connected to the housing 10; an exhaust channel 11 is provided on the housing 10 on the side of the exhaust structure 30 away from the arc extinguishing chamber 20; the exhaust structure 30 is provided with a first exhaust hole group 31 and a second exhaust hole group 32, one ends of the first exhaust hole group 31 and the second exhaust hole group 32 are respectively communicated with the arc extinguishing chamber 20, and the other ends are respectively communicated with the exhaust channel 11; the second exhaust hole group 32 is located between the first exhaust hole group 31 and the outlet of the exhaust channel 11, and the outlet area of any exhaust hole 331 of the second exhaust hole group 32 is smaller than the outlet area of any exhaust hole 331 of the first exhaust hole group 31. By providing the first exhaust hole group 31 and the second exhaust hole group 32 with different outlet sizes of the exhaust holes 331 on the exhaust structure 30 in this application, and making the sizes of the exhaust holes 331 of the exhaust hole group near the outlet of the exhaust channel 11 smaller than the sizes of the exhaust holes 331 of the exhaust hole group away from the outlet of the exhaust channel 11, in this way, during the process that the gas is discharged from the first exhaust hole group 31 and moves along the exhaust channel 11, a negative pressure area will be formed, which will thus generate a suction force on the gas in the second exhaust hole group 32, so that the gas in the second exhaust hole group 32 can be quickly sucked out into the exhaust channel 11. Therefore, it is possible to prevent the gas in the exhaust channel 11 from flowing back into the arc extinguishing chamber 20, and it is possible to prevent the gas in the arc extinguishing chamber 20 from entering the exhaust channel 11 and hindering the normal flow of the gas in the exhaust channel 11. Through this setting method, this application can quickly discharge the high-temperature gas and can improve the problem of gas backflow in the prior art.

[0048] To enable the gas coming out of the exhaust structure 30 to be quickly drained into the exhaust channel 11, optionally, in this embodiment, please refer to Figure 4 、 Figure 5 、 Figure 7 and Figure 8, a first guide member 40 may be provided near the first exhaust hole group 31 of the housing 10, and the first guide member 40 is used to guide the gas discharged from the first exhaust hole group 31 toward the outlet of the exhaust passage 11.

[0049] Optionally, the gas flow direction of the exhaust passage 11 may be parallel to the length direction of the housing 10. As shown in Figure 1 and Figure 2 , in the orientations shown in Figure 1 and Figure 2 , the gas flow direction of the exhaust passage 11 is the horizontal direction; alternatively, the gas flow direction of the exhaust passage 11 may also be parallel to the height direction of the housing 10. As shown in Figure 5 and Figure 8 , in the orientations shown in Figure 5 and Figure 8 , the gas flow direction of the exhaust passage 11 is the vertical direction.

[0050] It should be noted that, in this embodiment, the second exhaust hole group 32 may include one group, as shown in Figure 5 and Figure 8 ; or it may include two groups, as shown in Figure 1 and Figure 3 .

[0051] When the second exhaust hole group 32 includes two groups, the two groups of the second exhaust hole group 32 may be respectively arranged on the opposite sides of the first exhaust hole group 31. It is worth pointing out that when the second exhaust hole group 32 includes two groups, the exhaust passage 11 may also include two groups, or the exhaust passage 11 may include two parts respectively corresponding to the two groups of the second exhaust hole group 32. In this way, as shown in Figure 1 , during the process of the gas discharged from the first exhaust hole group 31 moving along the exhaust passage 11, negative pressure zones will be respectively formed on the opposite sides of the exhaust passage 11 corresponding to the first exhaust hole group 31, so as to respectively form a suction force on the gas in the two groups of the second exhaust hole group 32 on the opposite sides of the first exhaust hole group 31, so that the gas in the two groups of the second exhaust hole group 32 located on both sides of the first exhaust hole group 31 is quickly sucked into the exhaust passage 11, and then discharged out of the housing 10 from the left and right two outlets of the exhaust passage 11.

[0052] The present application does not limit the specific structural form of the exhaust structure 30, and those skilled in the art can select it by themselves as long as its structural setting can meet the requirements of the Venturi effect. Three feasible ways of the exhaust structure 30 will be described below by way of example. It should be understood that these three ways are only for illustrative purposes for easy understanding and are not specific limitations on the exhaust structure 30 of the present application.

[0053] For example, in the first feasible implementation manner, as shown in Figure 3As shown in the figure, the exhaust structure 30 includes a plurality of exhaust plates 33 arranged at intervals along the first direction a. The gaps between adjacent exhaust plates 33 form exhaust holes 331. A plurality of exhaust holes 331 near the outlet of the exhaust passage 11 form a second exhaust hole group 32, and a plurality of exhaust holes 331 far from the outlet of the exhaust passage 11 form a first exhaust hole group 31; the first direction a is parallel to the arrangement direction of the arc extinguishing grids 21 of the arc extinguishing chamber 20.

[0054] It should be noted that the above-mentioned exhaust plate 33 can be integrally formed with the arc extinguishing grids 21 of the arc extinguishing chamber 20, or can be independently arranged relative to the arc extinguishing grids 21 of the arc extinguishing chamber 20.

[0055] To enable the gas to be discharged as soon as possible, the above-mentioned plurality of exhaust plates 33 and the plurality of arc extinguishing grids 21 of the arc extinguishing chamber 20 can be arranged in one-to-one correspondence. Adjacent two exhaust plates 33 are arranged at intervals, and the gap between them forms an exhaust hole 331. In this way, a plurality of exhaust plates 33 can form a plurality of exhaust holes 331. Among them, a part of the exhaust holes 331 (that is, the exhaust holes 331 far from the outlet of the exhaust passage 11) form the first exhaust hole group 31 in the foregoing text, and another part of the exhaust holes 331 (that is, the exhaust holes 331 close to the outlet of the exhaust passage 11) form the second exhaust hole group 32 in the foregoing text.

[0056] Optionally, the exhaust structure 30 further includes an insulating member 50. The insulating member 50 is connected to the exhaust structure 30 near the second exhaust hole group 32 and is at least partially embedded in the exhaust holes 331 of the second exhaust hole group 32. It should be noted that when the exhaust structure 30 includes the above-mentioned exhaust plates 33 arranged at intervals along the first direction a, in this embodiment, the insulating member 50 is connected to the exhaust plate 33 near the outlet of the exhaust passage 11 and is at least partially embedded in the exhaust hole 331, so that the exhaust holes 331 connected with the insulating member 50 form the second exhaust hole group 32. That is to say, the second exhaust hole group 32 is realized by arranging the insulating member 50 on the exhaust plate 33 and making the insulating member 50 partially embedded in the exhaust hole 331 to make the outlet area of any exhaust hole 331 of the second exhaust hole group 32 smaller than the outlet area of any exhaust hole 331 of the first exhaust hole group 31. In short, taking Figure 3 the shown orientation as an example, the height of the second exhaust hole group 32 in the vertical direction is less than the height of the first exhaust hole group 31 in the vertical direction.

[0057] It should be noted that the setting of the above-mentioned insulating member 50 can not only be used to adjust the size of the second exhaust hole group 32, but also prevent the arc extinguishing grids 21 from being short-circuited (when the exhaust plate 33 and the arc extinguishing grids 21 are integrally formed).

[0058] Of course, in addition to setting the insulating member 50, the gap between the plurality of exhaust plates 33 for forming the second exhaust hole group 32 can also be set to be smaller. In short, taking the Figure 3 orientation shown as an example, the width of the second exhaust hole group 32 along the first direction a is smaller than the width of the first exhaust hole group 31 along the first direction a.

[0059] In addition, in this embodiment, the first exhaust hole group 31 includes a plurality of exhaust holes 331, and the second exhaust hole group 32 also includes a plurality of exhaust holes 331. The sizes of the plurality of exhaust holes 331 in the first exhaust hole group 31 are the same, and the sizes of the plurality of exhaust holes 331 in the second exhaust hole group 32 are the same.

[0060] When the exhaust plate 33 and the arc extinguishing grid 21 are integrally formed, in order to prevent the arc from being short-circuited at the edges of the plurality of exhaust plates 33, optionally, the exhaust structure 30 further includes an insulating boss 60 protruding from the housing 10, and the plurality of exhaust plates 33 are respectively arranged on the insulating boss 60, as Figure 1 and Figure 4 shown.

[0061] In the second feasible embodiment, please refer to Figure 5 、 Figure 6 and Figure 7 , the exhaust structure 30 includes an insulating fence 34 arranged on the housing 10. The insulating fence 34 is located between the arc extinguishing chamber 20 and the exhaust passage 11, and the first exhaust hole group 31 and the second exhaust hole group 32 are respectively arranged on the insulating fence 34.

[0062] It should be noted that the insulating fence 34 can be located on the upper housing 10 or the lower housing 10 of the housing 10; alternatively, insulating fences 34 can also be arranged on both the upper housing 10 and the lower housing 10. When the upper housing 10 and the lower housing 10 are assembled together, the upper and lower insulating fences 34 can be butt-jointed and matched with each other (such as buckling or clamping).

[0063] In the third feasible embodiment, as Figure 8 and Figure 9 , the exhaust structure 30 includes an insulating cover 35 covering the outer periphery of the arc extinguishing chamber 20, and the first exhaust hole group 31 and the second exhaust hole group 32 are respectively arranged on the side of the insulating cover 35 close to the exhaust passage 11.

[0064] Please refer to Figure 9As shown, in the present embodiment, the insulating cover 35 is arranged in a U-shape, and the opening of the U-shaped insulating cover 35 exceeds the arc extinguishing chamber 20, and the first exhaust hole group 31 and the second exhaust hole group 32 are arranged on the side opposite to the opening of the U-shaped insulating cover 35, so that the gas coming out of the arc extinguishing chamber 20 can enter the opening of the U-shaped insulating cover 35, and be discharged to the exhaust channel 11 through the first exhaust hole group 31 and the second exhaust hole group 32.

[0065] Another aspect of the present invention provides a circuit breaker, which includes the above-mentioned gas exhaust device. Since the specific structure and beneficial effects of the gas exhaust device have been described in detail above, the present application will not repeat them here.

[0066] The embodiment of the present application also provides an electrical equipment, which is equipped with the aforementioned circuit breaker, and the electrical equipment can be equipped with at least one of the following: distribution box, cable, distribution cabinet, motor, switch socket, lamp, air conditioner, electric water heater, electric meter, camera, telephone, computer, etc. Such electrical equipment can use the circuit breaker related structure of the present application to realize intelligent management, but it is not limited to the above intelligently managed electrical equipment, and can also be used in non-intelligent electrical equipment in traditional industries.

[0067] The embodiment of the present application also provides an electrical equipment, and the aforementioned circuit breaker is applied to the electrical equipment. The electrical equipment can be used for whole-house intelligence, applied to smart home and Internet of Things industries, to realize whole-house intelligent management.

[0068] It is understood that the above scenarios are only examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of the present application. The technical solutions of the present application can also be applied to other scenarios. For example, it is known to those skilled in the art that with the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0069] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0070] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.

[0071] The units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0072] In this application, for the description of the same or similar term concepts, technical solutions, and / or application scenarios, generally only the first occurrence is described in detail. When it appears repeatedly later, for the sake of brevity, it is generally not described again. When understanding the technical solutions and other content of this application, for the same or similar term concepts, technical solutions, and / or application scenarios that are not described in detail later, reference can be made to the relevant detailed descriptions before them.

[0073] In this application, the descriptions of the various embodiments each have their own focuses. For the parts not described in detail or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0074] The technical features of the technical solutions of this application can be combined arbitrarily. For the sake of concise description, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope recorded in this application.

[0075] The above are only optional embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0076] In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

Claims

1. A gas discharge device, characterized in that, It includes a housing (10), an arc extinguishing chamber (20) and an exhaust structure (30) respectively connected to the housing (10); an exhaust passage (11) is provided on the housing (10) on the side of the exhaust structure (30) away from the arc extinguishing chamber (20). The exhaust structure (30) is provided with a first exhaust hole group (31) and a second exhaust hole group (32). One ends of the first exhaust hole group (31) and the second exhaust hole group (32) are respectively communicated with the arc extinguishing chamber (20), and the other ends are respectively communicated with the exhaust passage (11); the second exhaust hole group (32) is located between the first exhaust hole group (31) and the outlet of the exhaust passage (11), and the outlet area of any exhaust hole (331) of the second exhaust hole group (32) is smaller than the outlet area of any exhaust hole (331) of the first exhaust hole group (31).

2. The gas discharge device according to claim 1, wherein A first guiding member (40) is provided on the housing (10) near the first exhaust hole group (31), and the first guiding member (40) is used to guide the gas discharged from the first exhaust hole group (31) to the outlet of the exhaust passage (11).

3. The gas discharge device according to claim 1, wherein The gas flow direction of the exhaust passage (11) is parallel to the length direction of the housing (10) or parallel to the height direction of the housing (10).

4. The gas discharge device according to claim 1, wherein The second exhaust hole group (32) includes two groups, and the two groups of the second exhaust hole group (32) are respectively arranged on opposite sides of the first exhaust hole group (31).

5. The gas discharge device according to any one of claims 1 to 4, characterized in that The exhaust structure (30) includes a plurality of exhaust plates (33) arranged at intervals along a first direction (a). The gap between two adjacent exhaust plates (33) forms the exhaust hole (331). A plurality of the exhaust holes (331) near the outlet of the exhaust passage (11) form the second exhaust hole group (32), and a plurality of the exhaust holes (331) away from the outlet of the exhaust passage (11) form the first exhaust hole group (31); the first direction (a) is parallel to the arrangement direction of the arc extinguishing grid pieces (21) of the arc extinguishing chamber (20).

6. The gas discharge device according to claim 1, characterized in that The exhaust structure (30) further includes an insulating member (50). The insulating member (50) is connected to the exhaust structure (30) near the second exhaust hole group (32) and is at least partially embedded in the exhaust holes (331) of the second exhaust hole group (32).

7. The gas discharge device according to claim 5, wherein The exhaust structure (30) further includes an insulating boss (60) protruding from the housing (10), and the plurality of exhaust plates (33) are respectively arranged on the insulating boss (60).

8. The gas discharge device according to any one of claims 1 to 4, characterized in that The exhaust structure (30) includes an insulating fence (34) provided on the housing (10). The insulating fence (34) is located between the arc extinguishing chamber (20) and the exhaust passage (11), and the first exhaust hole group (31) and the second exhaust hole group (32) are respectively arranged on the insulating fence (34).

9. The gas discharge device according to any one of claims 1 to 4, characterized in that The exhaust structure (30) includes an insulating housing (35) covering the outer periphery of the arc extinguishing chamber (20), and the first exhaust hole group (31) and the second exhaust hole group (32) are respectively arranged on one side of the insulating housing (35) close to the exhaust passage (11).

10. A circuit breaker, characterized in that, It includes the gas discharge device according to any one of claims 1 to 9.

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