Multi-channel pressure relief temperature reduction circuit breaker and low-voltage electrical apparatus

Abstract

The utility model discloses a kind of multi-channel pressure relief temperature reduction circuit breaker and low-voltage apparatus, belong to low-voltage apparatus technical field.The multi-channel pressure relief temperature reduction circuit breaker includes arc extinguishing system, the arc extinguishing system is provided with second channel;Heat dissipation channel, the heat dissipation channel is located in one side of arc extinguishing system, the heat dissipation channel with the arc extinguishing system is communicated by the second channel;Arc baffle, the arc baffle is installed in one side of the second channel.When high-temperature high-pressure arc and gas are generated when circuit breaker breaks, high-temperature high-pressure gas is made into arc baffle flexible deformation, enters heat dissipation channel, and is discharged through heat dissipation channel and outlet, auxiliary first channel pressure relief.When the temperature inside circuit breaker is too high, heat can be transferred to heat dissipation channel by movable contact system and static contact system, and is discharged through heat dissipation channel and outlet, realize the rapid reduction of circuit breaker internal temperature, maintain the normal operating temperature of product does not exceed specified temperature, prolong the working life of product.

Description

Technical Field

[0001] This utility model relates to a multi-channel pressure relief and cooling circuit breaker and a low-voltage electrical appliance, belonging to the field of low-voltage electrical appliance technology. Background Technology

[0002] With the development of low-voltage electrical appliances and the increasing complexity and diversity of their operating environments, the requirements for circuit safety protection and circuit breaker operation are becoming increasingly stringent. For example, without altering the product's external dimensions and functional structure, to achieve higher breaking capacity, the product needs a structure capable of releasing or dissipating the high-temperature, high-voltage arc caused by the breaking process, and maintaining stable operation in a confined environment.

[0003] The existing product structure allows for the discharge of high-temperature, high-pressure electric arcs and gases generated during disconnection through an arc-extinguishing system, specifically from the arc-venting nozzle. However, during normal operation, the internal temperature of the product can only be dissipated externally through heat conduction from the product surface and component surfaces. When an overload occurs and a short circuit occurs, the internal temperature of the product can reach extremely high levels, accelerating the aging and damage of components and making it unsuitable for long-term operation. Utility Model Content

[0004] To address the aforementioned issues, this utility model provides a multi-channel pressure relief and cooling circuit breaker and low-voltage electrical appliance. This circuit breaker can quickly release the internal high-temperature and high-pressure arc and gas when the product is disconnected, thereby protecting the main circuit. At the same time, it can also dissipate heat during short circuits and overloads, maintaining the normal operating temperature of the product, slowing down the aging of components, and extending the product's service life.

[0005] This utility model is achieved through the following technical solution:

[0006] In a first aspect, this utility model provides a multi-channel pressure relief and cooling circuit breaker, comprising:

[0007] An arc-extinguishing system, wherein the arc-extinguishing system is provided with a second channel;

[0008] A heat dissipation channel is located on one side of the arc extinguishing system and is connected to the arc extinguishing system through a second channel;

[0009] An arc-blocking plate is installed on one side of the second channel.

[0010] In one embodiment of the present invention, the arc extinguishing system includes an arc nozzle and a first channel, the first channel being connected to the arc nozzle, and the second channel being located on one side of the first channel and connected to the first channel.

[0011] In one embodiment of this utility model, a moving contact system is included, the moving contact system including a moving contact and a moving silver point, the moving contact being connected to the moving silver point.

[0012] In one embodiment of this utility model, a stationary contact system is included, which is installed in the heat dissipation channel and connected to the moving contact system.

[0013] In one embodiment of this utility model, the stationary contact system includes a stationary silver point, a stationary contact, and a bracket. The two sides of the stationary silver point are respectively connected to the moving silver point and the stationary contact, and the stationary contact is mounted on the bracket.

[0014] In one embodiment of this utility model, the stationary contact system further includes a support plate, which is fixedly connected to the bracket, and the arc-blocking plate is installed between the stationary contact and the support plate and is fixedly connected to the support plate.

[0015] In one embodiment of this utility model, a housing is included, and the arc extinguishing system and the heat dissipation channel are located inside the housing.

[0016] In one embodiment of this invention, the arc-blocking plate is made of a flexible material. The arc-blocking plate can block the broken electric arc and burning metal particles, but the high-temperature, high-pressure gas, after being flexibly deformed by the arc-blocking plate, can be sprayed into the heat dissipation channel and discharged through the heat dissipation channel, assisting in the pressure relief of the first channel.

[0017] In one embodiment of this utility model, an outlet is included, wherein the outlet is provided with a first outlet and a second outlet, and the first outlet and the second outlet are symmetrically arranged on both sides of the heat dissipation channel.

[0018] Secondly, this utility model provides a low-voltage electrical appliance, including the aforementioned multi-channel pressure relief and cooling circuit breaker.

[0019] Beneficial effects

[0020] This utility model provides a multi-channel pressure relief and cooling circuit breaker, comprising an arc extinguishing system, a heat dissipation channel, an arc-blocking plate, and a second channel. The arc-blocking plate is a flexible structure that can seal the second channel, isolating the heat dissipation channel from the arc extinguishing system into two separate parts. When the circuit breaker interrupts and generates a high-temperature, high-pressure arc and gas, the high-temperature, high-pressure arc and gas are discharged from the first channel and the arc outlet. Simultaneously, the high-temperature, high-pressure gas enters the heat dissipation channel through the flexible deformation of the arc-blocking plate and is discharged through the heat dissipation channel and outlet, assisting in the pressure relief of the first channel. When the circuit breaker experiences a short-circuit overload, causing excessively high internal temperatures, heat can be transferred to the heat dissipation channel through the moving and stationary contact systems and discharged through the heat dissipation channel and outlet. Simultaneously, the casing can also conduct some heat to the heat dissipation channel, assisting the stationary contact system in conducting some heat, achieving a rapid reduction in the internal temperature of the circuit breaker, maintaining the normal operating temperature of the product within the specified range, slowing down the aging of components, and extending the product's service life. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the multi-channel pressure relief and cooling circuit breaker provided by this utility model.

[0022] Figure 2 This is a front view of the arc-blocking plate and the stationary contact system provided by this utility model.

[0023] In the diagram: 100, circuit breaker;

[0024] 1. Housing; 2. Thermomagnetic trip protection module; 3. Arc extinguishing system; 31. Arc nozzle; 32. First channel; 33. Second channel; 4. Moving contact system; 41. Moving contact; 42. Moving silver point; 5. Stationary contact system; 51. Stationary silver point; 52. Support plate; 53. Bracket; 54. Stationary contact; 6. Arc baffle plate; 7. Heat dissipation channel; 8. Outlet; 81. First outlet; 82. Second outlet. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] like Figures 1 to 2 As shown, this application provides a multi-channel pressure relief and cooling circuit breaker. The multi-channel pressure relief and cooling circuit breaker 100 can quickly release the internal high-temperature and high-pressure arc and gas when the product is disconnected, so as to protect the main circuit. At the same time, it can also dissipate heat during short circuit overload, maintain the normal operating temperature of the product, slow down the aging of components, and extend the service life of the product.

[0029] In some embodiments, the multi-channel pressure relief and cooling circuit breaker 100 includes a housing 1, a thermomagnetic trip protection module 2, an arc extinguishing system 3, a moving contact system 4, and a stationary contact system 5. The thermomagnetic trip protection module 2, the arc extinguishing system 3, the moving contact system 4, and the stationary contact system 5 are all installed within the housing 1. The thermomagnetic trip protection module 2 is installed on one side of the housing 1 and achieves overload protection through the heating of the thermomagnetic circuit itself. The arc extinguishing system 3 is located on one side of the breaking structure and can guide the arc to a specific direction and area to extinguish the generated high-voltage arc. One end of the stationary contact system 5 is connected to the moving contact system 4, and the moving contact system 4 can transfer some of the heat in the circuit breaker 100 to the stationary contact system 5 and discharge it.

[0030] In some embodiments, the arc extinguishing system 3 includes an arc nozzle 31, a first channel 32, and a second channel 33, both of which are pressure relief channels. Multiple baffles are arranged parallel to each other within the first channel 32. The side of the first channel 32 facing away from the split structure is connected to the arc nozzle 31, while the side of the arc nozzle 31 facing away from the first channel 32 is connected to the atmospheric environment outside the housing 1, enabling the high-voltage arc to be ejected for pressure relief. The second channel 33 is located on one side of the arc extinguishing system 3, assisting the first channel 32 in pressure relief, achieving multi-channel pressure relief. This allows for faster release of the arc and gas pressure inside the product, achieving rapid arc extinguishing and protecting the main circuit.

[0031] In some embodiments, the moving contact system 4 includes a moving contact 41 and a moving silver point 42, with the moving contact 41 connected to the moving silver point 42. The stationary contact system 5 includes a stationary silver point 51, a support plate 52, a bracket 53, and a stationary contact 54. The stationary silver point 51 is connected to the moving silver point 42, and the side of the stationary silver point 51 facing away from the moving silver point 42 is connected to the stationary contact 54. The side of the stationary contact 54 facing away from the stationary silver point 51 is connected to the bracket 53, which supports the stationary contact 54. The support plate 52 is mounted on the bracket 53 and is located below the stationary contact 54. When the main circuit is energized, the moving contact system 4 contacts the stationary silver point 51 of the stationary contact system 5 through the moving silver point 42. When not energized, the two are disconnected and maintain a sufficient physical distance.

[0032] In some embodiments, the circuit breaker 100 is provided with a heat dissipation channel 7, which is located below the arc extinguishing system 3 and the thermal-magnetic trip protection module 2. It is used to dissipate heat. The stationary contact system 5 is located inside the heat dissipation channel 7 and can dissipate the heat conducted from the moving contact system 4 into the heat dissipation channel 7. At the same time, the housing 1 can also conduct some heat into the heat dissipation channel 7, assisting the stationary contact system 5 in conducting some heat, thereby achieving a rapid reduction in the internal temperature of the circuit breaker 100, maintaining the normal operating temperature of the product without exceeding the specified temperature, slowing down the aging of components, extending the service life of the product, and without affecting the heating requirements of the thermal-magnetic trip protection module.

[0033] In some embodiments, an arc-blocking plate 6 is provided between the heat dissipation channel 7 and the arc-extinguishing system 3. The arc-blocking plate 6 is located on one side of the second channel 33, installed between the support plate 52 and the stationary contact 54, and fixed on the support plate 52. The arc-blocking plate 6 can seal the second channel 33, isolating the heat dissipation channel 7 and the arc-extinguishing system 3 into two separate parts, forming a relatively sealed space. The arc-blocking plate 6 is made of flexible material. The arc-blocking plate 6 can block the broken arc and burning metal particles, but the high-temperature and high-pressure gas generated by the breakage can be sprayed into the heat dissipation channel 7 after the flexible deformation of the arc-blocking plate 6, and discharged through the heat dissipation channel 7, assisting the first channel 32 in depressurization.

[0034] In some embodiments, outlets 8 are provided on both sides of the heat dissipation channel 7. The outlets 8 include a first outlet 81 and a second outlet 82, which are symmetrically arranged on both sides of the heat dissipation channel 7 to discharge heat and pressure from the heat dissipation channel 7 to the outside of the circuit breaker 100. Without changing the product's appearance and dimensions, by optimizing its internal structure design and by setting up the arc baffle 6, the second channel 33, and the heat dissipation channel 7, not only is the product's operating temperature reduced, but the pressure relief of the first channel 32 is also assisted.

[0035] Furthermore, this utility model also provides a low-voltage electrical appliance, which includes the aforementioned multi-channel pressure relief and cooling circuit breaker 100. The multi-channel pressure relief and cooling circuit breaker 100 is installed in the circuit of the low-voltage electrical appliance. When the circuit breaker trips, the generated high-temperature, high-pressure arc and gas can be discharged through the first channel 32 and the arc nozzle 31. Some of the high-temperature, high-pressure gas can enter the heat dissipation channel 7 through the second channel 33 and the flexible deformation of the arc-blocking plate 6, and then be discharged to the outside of the circuit breaker 100 through the outlet 8. When the low-voltage electrical appliance experiences a short circuit or overload, the heat generated by the circuit breaker 100 can be discharged through convection from the heat dissipation channel 7 and the outlet 8, thereby reducing the product's operating temperature.

[0036] The working principle of this utility model is as follows: The circuit breaker 100 has a heat dissipation channel 7 below the arc extinguishing system 3, and a second channel 33 at the connection between the arc extinguishing system 3 and the heat dissipation channel 7. An arc-blocking plate 6 is installed inside the second channel 33. The arc-blocking plate 6 is a flexible structure that can seal the second channel 33, thus isolating the heat dissipation channel 7 and the arc extinguishing system 3 into two separate parts. When the circuit breaker 100 generates a high-temperature, high-pressure arc and gas during interruption, the high-temperature, high-pressure arc and gas are discharged from the first channel 32 and the arc outlet 31. Simultaneously, the high-temperature, high-pressure gas enters the heat dissipation channel 7 through the flexible deformation of the arc-blocking plate 6 and is discharged through the heat dissipation channel 7 and the outlet 8, assisting in the depressurization of the first channel 32. When the circuit breaker 100 experiences a short circuit overload, causing the internal temperature to become too high, the heat can be transferred to the heat dissipation channel 7 through the moving contact system 4 and the stationary contact system 5, and then discharged through the heat dissipation channel 7 and the outlet 8. At the same time, the housing 1 can also conduct some heat to the heat dissipation channel 7, assisting the stationary contact system 5 in conducting some heat, thereby achieving a rapid reduction in the internal temperature of the circuit breaker 100, maintaining the normal operating temperature of the product without exceeding the specified temperature, slowing down the aging of components, extending the service life of the product, and without affecting the heating requirements of the thermal magnetic trip protection module.

[0037] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

[0039] This document uses specific embodiments to illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A multi-channel pressure relief and cooling circuit breaker, characterized in that, include: Arc extinguishing system (3), wherein the arc extinguishing system (3) is provided with a second channel (33); Heat dissipation channel (7), the heat dissipation channel (7) is located on one side of the arc extinguishing system (3), and the heat dissipation channel (7) is connected to the arc extinguishing system (3) through the second channel (33); An arc-blocking plate (6) is installed on one side of the second channel (33).

2. The multi-channel pressure relief and cooling circuit breaker according to claim 1, characterized in that, The arc extinguishing system (3) includes an arc nozzle (31) and a first channel (32). The first channel (32) is connected to the arc nozzle (31), and the second channel (33) is located on one side of the first channel (32) and is connected to the first channel (32).

3. The multi-channel pressure relief and cooling circuit breaker according to claim 1, characterized in that, It includes a moving contact system (4), which includes a moving contact (41) and a moving silver point (42), wherein the moving contact (41) is connected to the moving silver point (42).

4. A multi-channel pressure relief and cooling circuit breaker according to claim 3, characterized in that, It includes a stationary contact system (5), which is installed in the heat dissipation channel (7) and connected to the moving contact system (4).

5. A multi-channel pressure relief and cooling circuit breaker according to claim 4, characterized in that, The stationary contact system (5) includes a stationary silver point (51), a stationary contact (54), and a bracket (53). The stationary silver point (51) is connected to the moving silver point (42) and the stationary contact (54) on both sides, respectively. The stationary contact (54) is mounted on the bracket (53).

6. A multi-channel pressure relief and cooling circuit breaker according to claim 5, characterized in that, The stationary contact system (5) further includes a support plate (52), which is fixedly connected to the bracket (53). The arc-blocking plate (6) is installed between the stationary contact (54) and the support plate (52) and is fixedly connected to the support plate (52).

7. A multi-channel pressure relief and cooling circuit breaker according to claim 1, characterized in that, Includes a housing (1), the arc extinguishing system (3) and the heat dissipation channel (7) are located inside the housing (1).

8. A multi-channel pressure relief and cooling circuit breaker according to claim 6, characterized in that, The arc-blocking plate (6) is made of a flexible material.

9. A multi-channel pressure relief and cooling circuit breaker according to claim 1, characterized in that, It includes an outlet (8), which is provided with a first outlet (81) and a second outlet (82), and the first outlet (81) and the second outlet (82) are symmetrically arranged on both sides of the heat dissipation channel (7).

10. A low-voltage electrical appliance, characterized in that, Includes a multi-channel pressure relief and cooling circuit breaker as described in any one of claims 1-9.

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