Electrical fireproof current-limiting protector

Abstract

The utility model relates to the technical field of electrical fireproof current-limiting protectors, and discloses an electrical fireproof current-limiting protector which comprises a shell, bayonets are arranged at the tops and the bottoms of the two sides of the shell, a shell cover is arranged on the front face of the shell, elastic clamping blocks are fixedly connected to the four corners of the back face of the shell cover, and the elastic clamping blocks are arranged on the shell cover. The top of the shell and the top of the front face of the shell cover are each provided with a wire inlet, the bottom of the shell and the bottom of the front face of the shell cover are each provided with a wire outlet, the bottom of the shell cover is provided with a signal terminal port, and a first function board is arranged in the shell. The right side of the front face of the first function board is fixedly connected with an MOS tube. According to the utility model, through mutual cooperation of the first function board, the third function board, the signal terminal, the display board and other structures, the size of the electrical fireproof current-limiting protector can be reduced, and the problem that the installation is inconvenient due to the large size is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical fire-proof current-limiting protectors, in particular to an electrical fire-proof current-limiting protector. Background Art

[0002] The electrical fire-proof current-limiting protector is an important electrical safety device. When a load device is overcurrent or overloaded, the electrical fire-proof current-limiting protector uses semiconductors to instantly disconnect the circuit within microseconds. Furthermore, no arcs or sparks are generated when disconnecting the circuit. This allows for more efficient protection of the load device and prevents fires.

[0003] The electrical fire-proof current-limiting protector is an important part of electrical circuit protection. However, the existing electrical fire-proof current-limiting protector is large in size and is not convenient to install inside the control box during installation, which increases the labor intensity and is time-consuming and labor-intensive. Since the electrical fire-proof current-limiting protector generates heat when in use, the existing one often only uses a cooling fan to cool it, resulting in poor cooling effect.

[0004] Therefore, an electrical fire-proof current-limiting protector is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above deficiencies, the present invention provides an electrical fire-proof current-limiting protector, which aims to improve the problem that the electrical fire-proof current-limiting protector in the prior art is large in size and has poor heat dissipation effect.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An electrical fire-proof current-limiting protector comprises a shell, the top and bottom of both sides of the shell are provided with bayonet slots, a shell cover is provided on the front of the shell, four corners of the back side of the shell cover are fixedly connected with elastic card blocks, the elastic card blocks are located inside the bayonet slots, the top of the shell and the top of the front side of the shell cover are provided with line inlets, the bottom of the shell and the bottom of the front side of the shell cover are provided with line outlets, a signal terminal port is provided at the bottom of the shell cover, a function board 1 is provided inside the shell, a MOS tube is fixedly connected to the right side of the front side of the function board 1, a function board 2 is fixedly connected to the left side of the front side of the function board 1, a function board 3 is fixedly connected to the right side of the function board 2, a signal terminal is fixedly connected to the bottom of the front side of the function board 3, the signal terminal extends to the front side of the signal terminal port, a display panel is fixedly connected to the front side of the function board 2, a heat dissipation component is provided inside the shell, and a display component is provided on the front side of the display panel;

[0008] As a further description of the above technical solution:

[0009] The heat dissipation assembly includes a special-shaped heat sink, which is fixedly connected to the right side of the MOS tube. A heat dissipation port is provided on the top of the housing. A heat dissipation fan is provided on the top of the special-shaped heat sink, and the top of the heat dissipation fan contacts the top of the inner cavity of the housing. An air inlet is provided on the bottom of the housing.

[0010] As a further description of the above technical solution:

[0011] The display assembly includes a display screen, which is fixedly mounted on the front of the display panel. Indicator lights are fixedly mounted on both sides of the front of the display panel. An operation button is fixedly mounted on the right side of the front of the display panel. The front of the operation button extends through the front of the housing cover.

[0012] As a further description of the above technical solution:

[0013] The top and bottom of the front surface of the functional board are both fixedly connected with conductive sheets, and the conductive sheets are both located inside the line inlet and the line outlet.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the present invention, by arranging the mutual cooperation of the function board 1, the function board 3, the signal terminal and the display board, the volume of the electrical fire-proof current-limiting protector can be reduced, thus avoiding the problem of inconvenience in installation due to the large volume.

[0016] 2. In the present invention, by arranging the mutual cooperation of the special-shaped radiator, the heat dissipation port, the heat dissipation fan and the air inlet structure, since the air duct port of the special-shaped radiator is on the same horizontal plane as the air inlet and the heat dissipation port on the shell, when the heat dissipation fan is started, there is almost no obstacle on the air duct, thereby greatly improving the efficiency of heat removal, and being able to better cool the heat generated by the electrical fire-proof current-limiting protector during operation, avoiding the problem of poor heat dissipation effect, and achieving the advantage of good heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional schematic diagram of an electrical fire-proof current-limiting protector proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of a special-shaped radiator of an electrical fire-proof current-limiting protector proposed by the present invention;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of an elastic card block of an electrical fire-proof current-limiting protector proposed by the present invention;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of a cooling fan of an electrical fire-proof current-limiting protector proposed in the present invention;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of a filter screen of an electrical fire-proof current-limiting protector proposed by the present invention.

[0022] Legend:

[0023] 1. Shell; 2. Bayonet; 3. Shell cover; 4. Elastic block; 5. Cable inlet; 6. Cable outlet; 7. Signal terminal port; 8. Function board 1; 9. MOS tube; 10. Function board 2; 11. Function board 3; 12. Signal terminal; 13. Display board; 14. Special-shaped heat sink; 15. Heat dissipation vent; 16. Cooling fan; 17. Air inlet; 18. Display screen; 19. Indicator light; 20. Operation button; 21. Conductive sheet; 22. Filter. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figure 1-3 The utility model provides an embodiment of an electrical fire-proof current-limiting protector, comprising a housing 1, a bayonet 2 being provided at the top and bottom of both sides of the housing 1, a housing cover 3 being provided on the front of the housing 1, elastic blocks 4 being fixedly connected to the four corners of the back of the housing cover 3, the elastic blocks 4 being located inside the bayonet 2, a line inlet 5 being provided at the top of the housing 1 and the top of the front of the housing cover 3, and a line outlet 6 being provided at the bottom of the housing 1 and the bottom of the front of the housing cover 3;

[0026] Reference Figure 1-3 A signal terminal port 7 is provided at the bottom of the shell cover 3, and a function board 8 is provided inside the shell 1. The top and bottom of the front of the function board 8 are fixedly connected with conductive sheets 21. The conductive sheets 21 are located inside the line inlet 5 and the line outlet 6. By providing the conductive sheet 21, the conductive sheet 21 can play an important role in connecting the circuit and conducting current. A MOS tube 9 is fixedly connected to the right side of the front of the function board 8, a function board 2 10 is fixedly connected to the left side of the front of the function board 8, a function board 3 11 is fixedly connected to the right side of the function board 2 10, a signal terminal 12 is fixedly connected to the bottom of the front of the function board 3 11, the signal terminal 12 extends to the front of the signal terminal port 7, and a display panel 13 is fixedly connected to the front of the function board 2 10.

[0027] Reference Figure 3-5The top of the heat dissipation fan 16 is in contact with the top of the inner cavity of the shell 1, and an air inlet 17 is provided at the bottom of the shell 1. By arranging the special-shaped heat sink 14, the heat dissipation component includes a special-shaped heat sink 14, which is fixedly connected to the right side of the MOS tube 9. By arranging the special-shaped heat sink 14, the volume and surface area of the heat sink are increased without increasing the space of the shell 1, thereby achieving a better heat dissipation effect. A heat dissipation port 15 is provided on the top of the special-shaped heat sink 14, and a heat dissipation fan 16 is provided on the top of the special-shaped heat sink 14. The top of the heat dissipation fan 16 is in contact with the top of the inner cavity of the shell 1, and an air inlet 17 is provided at the bottom of the shell 1. By arranging the special-shaped heat sink 14, the heat dissipation port 15, the heat dissipation fan 16 and the air inlet 17 structure, since the air duct opening of the special-shaped heat sink 14 is on the same horizontal plane as the air inlet 17 and the heat dissipation port 15 on the shell 1, there is almost no obstacle in the air duct when the heat dissipation fan 16 is started, thereby greatly improving the efficiency of heat removal, and can better cool the heat generated by the electrical fire limiting current protector during operation, avoiding the problem of poor heat dissipation effect, and achieving the advantage of good heat dissipation effect.

[0028] Reference Figure 2-4 A display assembly is provided on the front of the display panel 13, and the display assembly includes a display screen 18. The display screen 18 is fixedly mounted on the front of the display panel 13. Indicator lights 19 are fixedly mounted on both sides of the front of the display panel 13. An operation button 20 is fixedly mounted on the right side of the front of the display panel 13. The front of the operation button 20 extends through the front of the shell cover 3. By arranging the mutual coordination of the display screen 18, the indicator light 19 and the operation button 20 structures, the parameters of the electrical fire-proof current-limiting protector can be set, and then the parameters can be displayed through the display screen 18. At the same time, the indicator light 19 can prompt the functions of the electrical fire-proof current-limiting protector.

[0029] Working principle: When in use, first install function board 1 8, function board 2 10, function board 3 11 and display board 13 into the interior of the shell 1, then pick up the shell cover 3 and insert it into the interior of the bayonet 2 through the elastic card block 4. The setting of the elastic card block 4 makes it easy to disassemble and assemble the shell cover 3, avoiding the need for traditional electrical fire-proof and current-limiting protectors to be installed by bolts. When the electrical fire-proof and current-limiting protector generates heat during operation, it is first dissipated through the special-shaped radiator 14, and the cooling fan 16 is started at the same time. The cooling fan 16 draws outside air into the interior of the special-shaped radiator 14 through the air inlet 17, and then discharges the heat through the heat dissipation port 15. The characteristics of this single-phase 4P electrical fire-proof and current-limiting protector: 4P size and structure are more reasonable, consistent with the single-phase 4P leakage micro-breaker, can be built-in leakage, can be installed in the PZ30 box, wiring is more flexible, and the use site is expanded more effectively, and the heat dissipation effect is better through the special-shaped radiator 14, thereby achieving the advantages of small size and good heat dissipation effect.

[0030] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electrical fire-proof current-limiting protector, comprising a housing (1), characterized in that: The top and bottom of both sides of the shell (1) are provided with bayonet holes (2), the front of the shell (1) is provided with a shell cover (3), the four corners of the back of the shell cover (3) are fixedly connected with elastic card blocks (4), and the elastic card blocks (4) are located inside the bayonet holes (2). The top of the shell (1) and the top of the front of the shell cover (3) are provided with line inlets (5), the bottom of the shell (1) and the bottom of the front of the shell cover (3) are provided with line outlets (6), the bottom of the shell cover (3) is provided with a signal terminal port (7), and the interior of the shell (1) is provided with a function board (8). The right side of the front face of the function board 1 (8) is fixedly connected to a MOS tube (9), the left side of the front face of the function board 1 (8) is fixedly connected to a function board 2 (10), the right side of the function board 2 (10) is fixedly connected to a function board 3 (11), the bottom of the front face of the function board 3 (11) is fixedly connected to a signal terminal (12), the signal terminal (12) extends to the front face of the signal terminal port (7), the front face of the function board 2 (10) is fixedly connected to a display panel (13), a heat dissipation component is provided inside the housing (1), and a display component is provided on the front face of the display panel (13).

2. The electrical fire-proof current-limiting protector according to claim 1, characterized in that: The heat dissipation assembly includes a special-shaped heat sink (14), the special-shaped heat sink (14) is fixedly connected to the right side of the MOS tube (9), a heat dissipation port (15) is provided on the top of the housing (1), a heat dissipation fan (16) is provided on the top of the special-shaped heat sink (14), the top of the heat dissipation fan (16) is in contact with the top of the inner cavity of the housing (1), and an air inlet (17) is provided on the bottom of the housing (1).

3. The electrical fire-proof current-limiting protector according to claim 1, characterized in that: The display assembly includes a display screen (18), the display screen (18) is fixedly mounted on the front of the display panel (13), indicator lights (19) are fixedly mounted on both sides of the front of the display panel (13), an operation button (20) is fixedly mounted on the right side of the front of the display panel (13), and the front of the operation button (20) extends through the front of the housing cover (3).

4. The electrical fire-proof current-limiting protector according to claim 1, characterized in that: The top and bottom of the front of the functional board (8) are both fixedly connected with conductive sheets (21), and the conductive sheets (21) are both located inside the line inlet (5) and the line outlet (6).

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