Compact filter device with heat dissipation function and electrical cabinet

Abstract

The utility model discloses a compact filter device with a heat radiation function and an electrical cabinet. The compact filter device comprises a reactor assembly, a heat radiator, a capacitor assembly and a pre-charging assembly. The conducting bar fixing seat is fixedly arranged on one side of the upper end of the reactor assembly, the radiator is fixedly arranged above the conducting bar fixing seat, the capacitor assembly is fixedly arranged above the radiator, and the pre-charging assembly is fixedly arranged above the capacitor assembly; the reactor assembly is electrically connected with the capacitor assembly through the conducting bar fixing seat and the cable; the outer side face of the electric reactor assembly is wrapped with a shell, and the shell is formed by enclosing insulating plates. According to the compact filter device with the heat dissipation function, the shell enclosed by the insulating plates is arranged to form a chimney effect and enable hot air flow to flow upwards, efficient heat dissipation is achieved in cooperation with use of the heat dissipation device, and the components are arranged in a stacked mode so that the internal structure can be compact; the compact filter device is high in heat dissipation performance and can be assembled in a small-size cabinet body.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a compact filter device with heat dissipation function and an electrical cabinet. Background Art

[0002] Electrical products such as dual inductor filters have a compact layout space and a large heat generation due to their working characteristics. The existing technical methods are to place electrical products such as dual inductor filters in a shell with a larger outer size, thereby increasing the heat dissipation capacity by expanding the external heat dissipation space. However, the large outer size of the shell inevitably requires a large cabinet to place the electrical products, which cannot achieve the purpose of compact design, resulting in the need to use an electrical cabinet with a huge floor space, affecting the space utilization efficiency. Therefore, the dual inductor filter device in the existing technical method has the problem of a non-compact setting structure. Utility Model Content

[0003] The embodiments of the utility model provide a compact filter device and an electrical cabinet with a heat dissipation function, aiming to solve the problem of a non-compact structure of a dual-inductor filter device in the prior art method.

[0004] In a first aspect, an embodiment of the utility model provides a compact filter device with heat dissipation function, including a reactor component, a heat sink, a capacitor component, and a pre-charging component;

[0005] The conductive bar fixing seat is fixedly arranged on one side of the upper end of the reactor assembly, the radiator is fixedly arranged above the conductive bar fixing seat, the capacitor assembly is fixedly arranged above the radiator, and the pre-charging assembly is fixedly arranged above the capacitor assembly; the reactor assembly is electrically connected to the capacitor assembly through the conductive bar fixing seat and the cable; the outer side of the reactor assembly is wrapped with a shell, and the shell is enclosed by an insulating plate;

[0006] A support seat is provided at the bottom end of the reactor assembly, and at least one vertical air duct is formed inside the shell;

[0007] The low-temperature airflow flows into the central cavity of the support seat and sequentially flows through the vertical air duct, the radiator, the capacitor assembly and the pre-charging assembly before being discharged upward.

[0008] In a second aspect, an embodiment of the utility model provides an electrical cabinet, the electrical cabinet comprising a cabinet body and the compact filter device with heat dissipation function described in the first aspect; the compact filter device with heat dissipation function is arranged in the cabinet body;

[0009] The reactor assembly, the capacitor assembly and the pre-charging assembly are fixedly connected to the inner wall of the cabinet through side beams;

[0010] A cabinet through hole is provided at a position opposite to the support seat; a top surface through hole is provided on the top surface of the cabinet, a top cover is provided above the top surface of the cabinet, the top cover is fixedly connected to the top surface of the cabinet through a surrounding plate, and an exhaust hole is provided on the surrounding plate.

[0011] Through the above scheme, it can be known that the utility model provides a compact filter device and electrical cabinet with heat dissipation function, the compact filter device includes a reactor assembly, a radiator, a capacitor assembly, and a pre-charge assembly; the conductive bar fixing seat is fixedly arranged on one side of the upper end of the reactor assembly, the radiator is fixedly arranged above the conductive bar fixing seat, the capacitor assembly is fixedly arranged above the radiator, and the pre-charge assembly is fixedly arranged above the capacitor assembly; the reactor assembly is electrically connected to the capacitor assembly through the conductive bar fixing seat and the cable; the outer side of the reactor assembly is wrapped with a shell, and the shell is enclosed by an insulating plate. The above-mentioned compact filter device with heat dissipation function forms a chimney effect by setting a shell enclosed by an insulating plate and allows the hot air flow to flow upward, cooperates with the use of a radiator to achieve efficient heat dissipation, and stacks the components to make the internal structure compact and improve the space utilization efficiency. The compact filter device has a strong heat dissipation performance and can be assembled in a cabinet with a smaller size. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 An overall structural diagram of a compact filter device with heat dissipation function provided by an embodiment of the utility model;

[0014] Figure 2 Another overall structural diagram of a compact filter device with heat dissipation function provided by an embodiment of the utility model;

[0015] Figure 3 A partial structural diagram of a compact filter device with heat dissipation function provided by an embodiment of the utility model;

[0016] Figure 4 Another partial structural diagram of a compact filter device with heat dissipation function provided by an embodiment of the utility model;

[0017] Figure 5Another partial structural diagram of a compact filter device with heat dissipation function provided by an embodiment of the utility model;

[0018] Figure 6 Another partial structural diagram of a compact filter device with heat dissipation function provided by an embodiment of the utility model;

[0019] Figure 7 The following partial structural diagram of a compact filter device with heat dissipation function provided by an embodiment of the utility model;

[0020] Figure 8 This is an electrical connection structure diagram of a compact filter device with heat dissipation function provided by an embodiment of the utility model.

[0021] Figure numerals: 11, shell; 12, reactor assembly; 13, radiator; 14, capacitor assembly; 15, pre-charging assembly; 21, conductive bar fixing seat; 22, cable; 23, side beam; 24, support seat; 131, outer rotor axial flow fan; 132, water cooling heat dissipation assembly; 133, guide tube; 135, thermal fin; KM2, relay; MU21, voltage detection chip; PT, thermistor; 134, mounting base; 1341, top plate; 1342, side plate; 241, connecting plate; 242, support plate; 30, cabinet; 31, top cover; 32, enclosure; 33, exhaust hole; 25, copper bar. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In order to solve the problem of the non-compact structure of the dual inductor filter device in the prior art, the embodiment of the utility model provides a compact filter device with heat dissipation function. Figure 1 and Figure 2The compact filter device with heat dissipation function comprises a reactor assembly 12, a radiator 13, a capacitor assembly 14, and a pre-charging assembly 15; a conductive bar fixing seat 21 is fixedly arranged on one side of the upper end of the reactor assembly 12, the radiator 13 is fixedly arranged above the conductive bar fixing seat 21, the capacitor assembly 14 is fixedly arranged above the radiator 13, and the pre-charging assembly 15 is fixedly arranged above the capacitor assembly 14; the reactor assembly 12 is electrically connected to the capacitor assembly 14 through the conductive bar fixing seat 21 and the cable 22; a shell 11 is wrapped around the outer side of the reactor assembly 12, and the shell 11 is enclosed by an insulating plate; a support seat 24 is provided at the bottom end of the reactor assembly 12, and at least one vertical air duct is formed inside the shell 11; a low-temperature airflow flows into the middle cavity of the support seat 24 and flows through the vertical air duct, the radiator 13, the capacitor assembly 14 and the pre-charging assembly 15 in sequence, and then is discharged upward.

[0024] The components are stacked in a compact space, and the heat sink 13 is set between the conductive bar fixing seat 21 and the capacitor assembly 14. The reactor assembly 12 and the capacitor assembly 14 are electrically connected through the conductive bar fixing seat 21 and the cable 22. The new structural design realizes forced cooling through the heat sink 13 in a compact space, so that high power density electrical components (high power density electrical components include reactor components 12, capacitor components 14, pre-charge components 15, etc.) can be used. The compact filter device of the above structure is easy to manufacture, easy to guarantee and can improve the reliability of use. Among them, the reactor assembly 12 is a dual-inductance filter reactor.

[0025] By stacking the reactor assembly 12, the heat sink 13, the capacitor assembly 14, and the pre-charging assembly 15, the compact filter device is vertically tall and thin as a whole, thereby meeting the application requirements of compact installation in the electrical cabinet of small size, thereby improving the overall power density of the electrical cabinet and saving floor space.

[0026] Among them, since the support seat 24 is set at the lower end of the reactor assembly 12, the bottom surface of the reactor assembly 12 is hollowed out, so the above-mentioned reactor assembly 12 supports front and back, left and right interchangeable incoming and outgoing lines, so as to meet the use requirements of various scenarios (such as the cabinet 30 is installed against the wall), which is conducive to the later maintenance of the compact filter device in the electrical cabinet. At the same time, the bottom surface of the reactor assembly 12 allows the AC bus to pass through, thereby improving the space utilization efficiency, and the lower side of the reactor assembly 12 is provided with a plurality of copper bars 25 for electrical connection with the AC bus.

[0027] The reactor assembly is surrounded by insulating plates to form a housing 11, so that a chimney effect can be formed in the housing 11, so that the hot air flows upward spontaneously, which is beneficial to heat dissipation. At the same time, the insulating plates can also improve the IP protection level of the cabinet 30 and prevent electromagnetic waves from radiating to the outside of the housing 11.

[0028] Placing the pre-charge component 15 at the top can reduce the damage to capacitors and other devices when it is heated, and is also beneficial to the heat dissipation of the device. Figure 3 As shown, the conductive bar fixing seat 21 is placed upward (the conductive bar fixing seat 21 is arranged at the upper end of the reactor assembly 12), and the conductive bar fixing seat 21 and the capacitor assembly 14 are electrically connected through the cable 22, thereby shortening the length of the cable 22 between the reactor assembly 12 and the capacitor assembly 14, and at the same time making the reactor assembly 12 and the capacitor assembly 14 connected in series to dissipate heat and improve the application effect of the capacitor assembly 14.

[0029] In a more specific embodiment, the radiator 13 is an outer rotor axial flow fan 131. Alternatively, the radiator 13 includes an outer rotor axial flow fan 131 and a water cooling heat dissipation assembly 132; the water cooling heat dissipation assembly 132 includes a plurality of heat conducting fins 135 arranged in parallel; a flow guide pipe 133 extends from a flow guide inlet to a flow guide outlet and sequentially penetrates each of the heat conducting fins 135, and the flow guide pipe 133 forms a fluid circuit between the flow guide inlet and the flow guide outlet; and the water cooling heat dissipation assembly 132 is disposed below the outer rotor axial flow fan 131.

[0030] Specifically, the radiator 13 may be configured as follows: Figure 4 As shown in the outer rotor axial flow fan 131, the fan can draw the lower air upward, thereby forming an airflow in the vertical direction to cool the reactor assembly 12, the capacitor assembly 14 and the pre-charging assembly 15 arranged inside the housing.

[0031] like Figure 6 and Figure 7As shown, it is also possible to combine the outer rotor axial flow fan 131 and the water cooling heat dissipation component 132 as the radiator 13, and transfer the heat of the compact filter device by combining air cooling and water cooling, thereby reducing the temperature of the reactor component 12. Among them, the water cooling heat dissipation component 132 includes a plurality of heat conducting fins 135 arranged in parallel. To enhance the use effect, the heat conducting fins 135 can be arranged vertically, and the gaps between adjacent heat conducting fins 135 can conduct the airflow, thereby increasing the airflow circulation speed, and thereby improving the heat dissipation effect of the water cooling heat dissipation component 132. The diversion inlet is used to input the refrigerant, and the diversion outlet is used to output the refrigerant, and the refrigerant can be water. By combining the outer rotor axial flow fan 131 with the water cooling heat dissipation component 132, the outer rotor axial flow fan 131 is started to allow air flow to circulate, and the circulating air exchanges heat with the thermal fins 135 to remove heat. At the same time, the refrigerant circulating in the guide tube 133 also exchanges heat with the thermal fins 135 to remove heat, thereby further improving the heat dissipation efficiency of the radiator 13.

[0032] More specifically, Figure 8 As shown, the compact filter device further includes a relay KM2, a voltage detection chip MU21 configured in the pre-charging component 15, and a thermistor PT configured in the reactor component 12; at least one intermediate phase line of the reactor component 12 is embedded with the thermistor PT; both ends of each thermistor PT are electrically connected to the voltage detection chip MU21; the two control connection ends of the voltage detection chip MU21 are respectively connected to the AC phase line and a control end of the relay KM2; the other control end of the relay KM2 is connected to the AC neutral line; the control switch of the relay KM2 simultaneously controls the electrical connection between the AC phase line and the AC neutral line and the two voltage input ends of the outer rotor axial flow fan 131. Specifically, the two intermediate phase lines of the reactor component 12 are respectively embedded with a thermistor PT.

[0033] The temperature of the intermediate phase line can be sensed by a temperature-sensitive resistor PT, wherein the intermediate phase line can be Figure 8 The L1 phase line and the L2 phase line shown. The voltage detection chip MU21 can obtain the voltage change on the corresponding path of the thermistor PT. When the temperature of the middle phase line next to the thermistor PT increases, the resistance of the thermistor PT decreases due to heat, and the voltage on the corresponding path changes. When the voltage detection chip MU21 detects that the voltage change value on the corresponding path of any thermistor PT exceeds the preset voltage value, a control instruction is issued to turn on the relay KM2. At this time, the control switch of the relay KM2 connects the AC phase line with one voltage input terminal of the outer rotor axial flow fan 131, and the control switch simultaneously connects the AC neutral line with another voltage input terminal of the outer rotor axial flow fan 131. At this time, the outer rotor axial flow fan 131 is powered on and starts working.

[0034] Among them, the T end and R end of the pre-charging component 15 are connected to the incoming terminal of the T0 incoming circuit breaker, and the T end, S end, and R end of the reactor component 12 are connected to the outgoing terminal of the T0 incoming circuit breaker. The W end, V end, and U end of the reactor component 12 are used as three-phase electrical output terminals for voltage output. The AC phase line corresponds to the ACH end, and the AC neutral line corresponds to the ACL end.

[0035] The heat sink 13 is provided to reduce the temperature of the conductive wires inside the reactor assembly 12, thereby preventing the overlapped portions of the conductive wires from being oxidized; the internal conductive wires are maintained within a normal mechanical strength range, and annealing of the conductive wires due to excessive temperature is prevented, thereby effectively improving the safety and reliability of the equipment operation.

[0036] In a more specific embodiment, the heat sink 13 is fixedly disposed on a mounting substrate 134, and the mounting substrate 134 includes a top plate 1341 and side plates 1342 fixedly connected to both sides of the top plate 1341; ventilation holes are provided on the top plate 1341, and the side plates 1342 slide horizontally along both sides of the top surface of the reactor assembly 12 and then abut against the conductive bar fixing seat 21.

[0037] Specifically, the heat sink 13 can be fixed on the mounting base plate 134, and the side plates 1342 of the mounting base plate 134 can slide horizontally along both sides of the top surface of the reactor assembly 12. The specific structure is as follows: Figure 5 As shown, when the mounting substrate 134 slides toward the conductive bar fixing seat 21, it can abut against the conductive bar fixing seat 21. When the radiator 13 needs to be repaired, the mounting substrate 134 can be pulled out, and the mounting substrate 134 slides toward the side away from the conductive bar fixing seat 21. This facilitates the radiator 13 to be pulled out as a whole for front maintenance in the application scenario where the cabinet 30 is against the wall.

[0038] In a more specific embodiment, the support seat 24 includes at least two connecting plates 241 arranged horizontally along a first direction, and at least two supporting plates 242 arranged horizontally along a second direction; the first direction is perpendicular to the second direction; the connecting plates 241 are fixedly connected to the bottom end of the reactor assembly 12, and the supporting plates 242 are arranged below the connecting plates 241 and fixedly connected to the connecting plates 241; the gaps between the connecting plates 241 and the gaps between the supporting plates 242 are combined to form a central cavity of the support seat 24. The height of the support seat 24 is 10-35 cm.

[0039] In order to further improve the supporting performance of the support seat 24, the support seat 24 may be composed of a support plate 242 and a connecting plate 241; in the embodiment of the present application, two connecting plates 241 and two support plates 242 are provided, and the specific structure is as follows: Figure 3 As shown. The gap between the connecting plates 241 and the gap between the supporting plates 242 are combined to form the middle cavity of the supporting seat 24. The middle cavity can be used for gas to flow upward, and the middle cavity is also convenient for the AC busbar to pass through. Specifically, the height of the supporting seat 24 can be set to 10-35 cm, preferably 15-25 cm.

[0040] The embodiment of the present application also discloses an electrical cabinet, which includes a cabinet 30 and the compact filter device with heat dissipation function described in the first aspect, wherein the compact filter device with heat dissipation function is arranged in the cabinet 30, and the inductor assembly 12, the capacitor assembly 14 and the pre-charging assembly 15 are fixedly connected to the inner wall of the cabinet 30 through a side beam 23; a cabinet through hole is provided at a position opposite to the support seat 24; a top surface through hole is provided on the top surface of the cabinet 30, and a top cover 31 is provided above the top surface of the cabinet 30, and the top cover 31 is fixedly connected to the top surface of the cabinet 30 through a surrounding plate 32, and an exhaust hole 33 is provided on the surrounding plate 32.

[0041] A cabinet through hole is provided on the side of the cabinet 30, and an exhaust hole 33 is provided on the enclosure 32, so as to facilitate gas circulation. The reactor assembly 12, the capacitor assembly 14 and the pre-charge assembly 15 are fixedly connected to the inner wall of the cabinet 30 through the side beam 23, so as to avoid contact between the components and realize stacking of the components to make the structure more compact.

[0042] In a more specific embodiment, the cabinet 30 is a rectangular parallelepiped structure, and the length and width of the cabinet 30 are equal and are not greater than 0.6 meters. Specifically, the above-mentioned compact filter device can be installed in an electrical cabinet with a width and a length of 0.6 meters, and the electrical cabinet is a rectangular parallelepiped structure as a whole.

[0043] The utility model provides a compact filter device and an electrical cabinet with heat dissipation function, the compact filter device comprises a reactor assembly 12, a radiator 13, a capacitor assembly 14, and a pre-charge assembly 15; a conductive bar fixing seat 21 is fixedly arranged on one side of the upper end of the reactor assembly 12, the radiator 13 is fixedly arranged above the conductive bar fixing seat 21, the capacitor assembly 14 is fixedly arranged above the radiator 13, and the pre-charge assembly 15 is fixedly arranged above the capacitor assembly 14; the reactor assembly 12 is electrically connected to the capacitor assembly 14 through the conductive bar fixing seat 21 and the cable 22; the outer side of the reactor assembly 12 is wrapped with a shell 11, and the shell 11 is enclosed by an insulating plate. The above-mentioned compact filter device with heat dissipation function forms a chimney effect by setting a shell 11 enclosed by an insulating plate and allows the hot air flow to flow upward, cooperates with the use of the radiator 13 to achieve efficient heat dissipation, and stacks the components to make the internal structure compact and improve the space utilization efficiency. The compact filter device has a strong heat dissipation performance and can be assembled in a cabinet 30 with a smaller size.

[0044] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A compact filter device with heat dissipation function, characterized in that: Including reactor components, radiator, capacitor components, and pre-charge components; The conductive bar fixing seat is fixedly arranged on one side of the upper end of the reactor assembly, the radiator is fixedly arranged above the conductive bar fixing seat, the capacitor assembly is fixedly arranged above the radiator, and the pre-charging assembly is fixedly arranged above the capacitor assembly; the reactor assembly is electrically connected to the capacitor assembly through the conductive bar fixing seat and the cable; the outer side of the reactor assembly is wrapped with a shell, and the shell is enclosed by an insulating plate; A support seat is provided at the bottom end of the reactor assembly, and at least one vertical air duct is formed inside the shell; The low-temperature airflow flows into the central cavity of the support seat and sequentially flows through the vertical air duct, the radiator, the capacitor assembly and the pre-charging assembly before being discharged upward.

2. The compact filter device with heat dissipation function according to claim 1, characterized in that: The radiator is an outer rotor axial flow fan.

3. The compact filter device with heat dissipation function according to claim 1, characterized in that: The radiator includes an outer rotor axial flow fan and a water cooling heat dissipation component; The water-cooling heat dissipation component includes a plurality of heat-conducting fins arranged in parallel; the guide pipe extends from the guide inlet to the guide outlet and passes through each of the heat-conducting fins in sequence, and the guide pipe forms a fluid circuit between the guide inlet and the guide outlet; The water-cooling heat dissipation component is arranged below the outer rotor axial flow fan.

4. The compact filter device with heat dissipation function according to any one of claims 2 to 3, characterized in that: It also includes a relay, a voltage detection chip configured in the pre-charging component, and a temperature-sensitive resistor configured in the reactor component; At least one intermediate phase line of the reactor assembly is embedded with the temperature-sensitive resistor; both ends of each temperature-sensitive resistor are electrically connected to the voltage detection chip respectively; The two control connection terminals of the voltage detection chip are respectively connected to the AC phase line and one control terminal of the relay; the other control terminal of the relay is connected to the AC neutral line; the control switch of the relay simultaneously controls the on-off of the electrical connection between the AC phase line and the AC neutral line and the two voltage input terminals of the outer rotor axial flow fan.

5. The compact filter device with heat dissipation function according to claim 4, characterized in that: Two intermediate phase lines of the reactor assembly are respectively embedded with a temperature-sensitive resistor.

6. The compact filter device with heat dissipation function according to claim 4, characterized in that: The radiator is fixedly arranged on a mounting base plate, and the mounting base plate comprises a top plate and side plates fixedly connected to two sides of the top plate; The top plate is provided with ventilation holes, and the side plates are horizontally slid along both sides of the top surface of the reactor assembly and then abut against the conductive bar fixing seat.

7. The compact filter device with heat dissipation function according to claim 4, characterized in that: The support base includes at least two connecting plates arranged horizontally along a first direction, and at least two supporting plates arranged horizontally along a second direction; the first direction is perpendicular to the second direction; The connecting plates are all fixedly connected to the bottom ends of the reactor components, and the supporting plates are all arranged below the connecting plates and are each fixedly connected to the connecting plates; The gaps between the connecting plates and the gaps between the supporting plates are combined to form a central cavity of the supporting seat.

8. The compact filter device with heat dissipation function according to claim 7, characterized in that: The height of the support base is 10-35cm.

9. An electrical cabinet, characterized in that: The electrical cabinet comprises a cabinet body and a compact filter device with heat dissipation function according to any one of claims 1 to 8; the compact filter device with heat dissipation function is arranged in the cabinet body; The reactor assembly, the capacitor assembly and the pre-charging assembly are fixedly connected to the inner wall of the cabinet through side beams; A cabinet through hole is provided at a position opposite to the support seat; a top surface through hole is provided on the top surface of the cabinet, a top cover is provided above the top surface of the cabinet, the top cover is fixedly connected to the top surface of the cabinet through a surrounding plate, and an exhaust hole is provided on the surrounding plate.

10. The electrical cabinet according to claim 9, characterized in that: The cabinet is a rectangular parallelepiped structure, and the length and width of the cabinet are equal and are not greater than 0.6 meters.

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