Low-voltage wire inlet cabinet

Abstract

The utility model relates to the technical field of electric power cabinets, and discloses a low-voltage wire inlet cabinet which comprises a cabinet body, a heat dissipation back plate is arranged on one side in the cabinet body, a ventilation groove is formed in the heat dissipation back plate, an air guide plate is arranged at the position, below the ventilation groove, of one side of the heat dissipation back plate, and a hollow shell is arranged on one side of the bottom of the air guide plate. A semiconductor chilling plate is arranged on one side of the outer wall of the hollow shell, a draught fan is arranged on one side of a rear back plate of the cabinet body, and the attaching area of the air guide plate and the heat conduction plate is in a wavy shape. Heat exchange is conducted between cooling liquid and the air guide plate through heat transfer of the heat conduction plate, the air guide plate is cooled, and therefore outside air is cooled, and the heat conduction plate is arranged on the outer wall of the hollow shell. One part of cooled air is directly blown into the cabinet body through the ventilation grooves, the other part of the cooled air enters the connecting hose and is blown out through the air outlet strip, the air outlet position of the air outlet strip can be adjusted through sliding of the air outlet strip in the sliding grooves, and therefore concentrated air blowing cooling can be conducted on a concentrated heating area in the cabinet body.

Description

Technical Field

[0001] The utility model relates to the technical field of power cabinets, in particular to a low-voltage incoming line cabinet. Background Art

[0002] The low-voltage incoming line cabinet, also known as the low main cabinet, is the first cabinet in the power system and is generally directly connected to the low-voltage side of the transformer. Its main function is to introduce electrical energy from the distribution transformer into different power systems. Specifically, as the starting point of the power system, the low-voltage incoming line cabinet connects the power supply line to the power system to realize the power supply function. At the same time, it also distributes electrical energy to various electrical equipment or circuits through circuit breakers and other equipment. The rated current, overload protection and short-circuit protection devices of the circuit breakers are reasonably set, and the electrical energy can be reasonably distributed and protected according to the load conditions of different circuits. After the existing low-voltage incoming line cabinet is used for a long time, a lot of heat will be generated inside. Due to its poor internal ventilation effect, the heat dissipation is poor, which reduces the service life of the internal electrical components.

[0003] After searching, a Chinese utility model patent with publication number: CN219918117U discloses a low-voltage incoming line cabinet, wherein reserved holes are fixedly opened on both sides of the inner cavity of the cabinet, a heat absorbing plate is fixedly installed inside the reserved hole, a connecting frame is fixedly connected to one side of the heat absorbing plate, a fixing plate is fixedly connected to one side of the connecting frame, an exhaust fan is fixedly installed on one side of the fixing plate, a dustproof net is fixedly installed on one side of the exhaust fan, a plurality of ventilation holes are opened on the surface of the heat absorbing plate, the heat absorbing plate absorbs the internal heat of the cabinet, the heat absorbed by the surface of the heat absorbing plate can be discharged by the exhaust fan, and the heat inside the cabinet can be discharged to the outside through the ventilation holes on the surface of the heat absorbing plate, and air circulation is formed inside the cabinet through the air inlet and the second heat dissipation outlet, thereby improving the internal heat dissipation efficiency and the service life of the internal components.

[0004] In the above technical solution, the heat dissipation of the low-voltage incoming line cabinet is achieved by cooperating with a heat absorption plate. However, the exhaust fan in the above technical solution is installed on one side of the cabinet, and the exhaust range is limited. When the exhaust heat is dissipated, the wind force distribution in the cabinet is uneven, resulting in uneven heat dissipation, and concentrated heat dissipation in the cabinet cannot be performed. Utility Model Content

[0005] The purpose of the utility model is to provide a low-voltage incoming line cabinet to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-voltage incoming line cabinet, comprising: a cabinet body, a heat dissipation back plate is provided on one side of the interior of the cabinet body, a ventilation slot is opened on the heat dissipation back plate, an air guide plate is provided on one side of the heat dissipation back plate below the ventilation slot, a hollow shell is provided on one side of the bottom of the air guide plate, a semiconductor refrigeration plate is provided on one side of the outer wall of the hollow shell, a heat conduction plate is provided on one side of the hollow shell, one side of the heat conduction plate is fitted with one side of the air guide plate, a fan is provided on one side of the back plate of the cabinet body, and the fitting area between the air guide plate and the heat conduction plate is wavy.

[0007] Furthermore, the cabinet is provided with a cabinet door on one side rotating away from the fan. The fan is a forward and reverse rotating fan. When the fan rotates clockwise, it is forward rotation. At this time, the fan blades suck air from the cabinet and discharge it outside the cabinet. When the fan rotates counterclockwise, it is reverse rotation. At this time, the fan blades suck air from the back of the cabinet. A lower heat sink is provided on one side of the bottom of the cabinet.

[0008] Furthermore, the air guide plate includes an inclined plate portion and a wave plate portion, the inclined plate portion is fixedly connected to the heat dissipation back plate, the inclined plate portion is arranged obliquely downward, and the highest point of the inclined surface of the inclined plate portion is close to the ventilation slot.

[0009] Furthermore, the inner walls on both sides of the cabinet are provided with sliding grooves, an air outlet strip is slidably provided on the outer side of the sliding groove, a connecting hose is provided on one side of the air outlet strip, and one end of the connecting hose passes through the heat dissipation back plate.

[0010] Furthermore, there are a plurality of ventilation slots, and the plurality of ventilation slots are arranged equidistantly from top to bottom on the heat dissipation back plate.

[0011] Furthermore, the interior of the hollow shell is filled with coolant, and one end of the heat conducting plate is in contact with the coolant.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model realizes that when the internal electronic components generate heat during the use of the low-voltage incoming line cabinet, the fan is started to rotate counterclockwise to blow air into the cabinet body through the heat dissipation back plate, the fan and the semiconductor refrigeration sheet are set, and the external air first contacts the air guide plate when entering the cabinet body, and the contact area with the air is increased through the wavy structure of the air guide plate. In the process of the air contacting the air guide plate, the semiconductor refrigeration sheet is used to cool the coolant in the hollow shell, and the coolant is cooled by the heat transfer of the heat conduction plate. Heat is exchanged with the air guide plate to cool the air guide plate, thereby cooling the outside air. Part of the cooled air is directly blown into the cabinet through the ventilation slots, and the other part enters the connecting hose and is blown out through the air outlet strip. The air outlet position of the air outlet strip can be adjusted by sliding the air outlet strip in the slide slot, so that the concentrated heat generation area in the cabinet can be cooled by concentrated blowing. In addition, through the arrangement of multiple ventilation slots and air outlet strips on both sides, multi-directional air outlet can be achieved, thereby improving the uniform distribution of wind force in the cabinet and improving the overall heat dissipation effect of the low-voltage incoming line cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the low-voltage incoming line cabinet of the utility model;

[0015] Figure 2 This is the main view of the low-voltage incoming line cabinet of the utility model;

[0016] Figure 3 It is a right sectional view of the low voltage incoming line cabinet of the utility model;

[0017] Figure 4 for Figure 3 Enlarged structural diagram at A in the middle.

[0018] In the figure: 1-cabinet body; 2-cabinet door; 3-lower heat sink; 4-heat sink back plate; 5-ventilation slot; 6-fan; 7-slide; 8-air outlet strip; 9-connecting hose; 10-air guide plate; 11-hollow shell; 12-semiconductor refrigeration sheet; 13-heat conduction plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] See also Figure 1-Figure 4The utility model provides a technical solution: a low-voltage incoming line cabinet, comprising: a cabinet body 1, a heat dissipation back plate 4 is provided on one side of the cabinet body 1, a ventilation slot 5 is provided on the heat dissipation back plate 4, a wind guide plate 10 is provided on one side of the heat dissipation back plate 4 below the ventilation slot 5, a hollow shell 11 is provided on one side of the bottom of the wind guide plate 10, a semiconductor refrigeration sheet 12 is provided on one side of the outer wall of the hollow shell 11, a heat conduction plate 13 is provided on one side of the hollow shell 11, one side of the heat conduction plate 13 is in contact with one side of the wind guide plate 10, a fan 6 is provided on one side of the back plate of the cabinet body 1, and a semiconductor refrigeration sheet 12 is provided on one side of the outer wall of the hollow shell 11, and a heat conduction plate 13 is provided on one side of the outer wall of the hollow shell 11. The fitting area between the air plate 10 and the heat conducting plate 13 is wavy. Through the heat transfer of the heat conducting plate 13, the coolant and the air guide plate 10 are heat exchanged to cool the air guide plate 10, thereby cooling the outside air. Part of the cooled air is directly blown into the cabinet 1 through the ventilation slot 5, and the other part enters the connecting hose 9 and is blown out through the air outlet strip 8. The air outlet position of the air outlet strip 8 can be adjusted by sliding the air outlet strip 8 in the slide slot 7, so that the concentrated heating area in the cabinet 1 can be cooled by concentrated blowing.

[0021] The cabinet 1 is provided with a cabinet door 2 on one side away from the fan 6. The fan 6 is a forward and reverse ventilator. When the fan 6 rotates clockwise, it is forward rotation. At this time, the fan blades inhale air from the cabinet 1 and discharge it outside the cabinet 1. At this time, the air enters through the lower heat sink 3. The outside air enters the cabinet 1 and is discharged through the ventilation slots 5 and the fan 6.

[0022] When the fan 6 rotates counterclockwise, it is reverse rotation. At this time, the fan blades inhale air from the back of the cabinet 1. A lower heat sink 3 is provided on one side of the bottom of the cabinet 1. When the outside air enters the cabinet 1, it first contacts the air guide plate 10. The wave-shaped structure of the air guide plate 10 increases the contact area with the air. In the process of contact between the air and the air guide plate, the coolant inside the hollow shell 11 is cooled by the semiconductor refrigeration sheet 12. Through the heat transfer of the heat conducting plate 13, the coolant and the air guide plate 10 are heat-exchanged, and the air guide plate 10 is cooled, thereby cooling the outside air. A part of the cooled air is directly blown into the cabinet 1 through the ventilation slot 5, and the other part enters the connecting hose 9 and is blown out through the air outlet strip 8.

[0023] The wind guide plate 10 includes an inclined plate portion and a wavy plate portion. The inclined plate portion is fixedly connected to the heat dissipation back plate 4 and is arranged obliquely downward. The highest point of the inclined surface of the inclined plate portion is close to the ventilation slot 5. The air contacts the air through the wind guide plate 10 to cool the air.

[0024] Slide grooves 7 are provided on the inner walls on both sides of the cabinet 1, and air outlet strips 8 are slidably provided on the outer side of the slide grooves 7. A connecting hose 9 is provided on one side of the air outlet strip 8. One end of the connecting hose 9 passes through the heat dissipation back plate 4. The sliding connection of the air outlet strip 8 is realized through the slide grooves 7, which facilitates the adjustment of the position of the air outlet strip 8, so that the air outlet strip 8 can be adjusted to the concentrated heating area for concentrated blowing and heat dissipation.

[0025] There are a plurality of ventilation slots 5 , which are evenly spaced from top to bottom on the heat dissipation back plate 4 , so as to facilitate multi-directional air outlet and improve the uniformity of wind force in the cabinet 1 .

[0026] The hollow shell 11 is filled with coolant, and one end of the heat conducting plate 13 is in contact with the coolant. The coolant is filled in the hollow shell 11 to improve the temperature uniformity of the hollow shell 11. The coolant has a large specific heat capacity and can keep cold well, which is convenient for continuously cooling the heat conducting plate 13.

[0027] Working principle: When the internal electronic components of the low-voltage incoming line cabinet generate heat during use and need to dissipate heat, the fan 6 is started to rotate counterclockwise to blow air into the cabinet 1. When the outside air enters the cabinet 1, it first contacts the air guide plate 10. The wave-shaped structure of the air guide plate 10 increases the contact area with the air. During the contact between the air and the air guide plate, the semiconductor refrigeration sheet 12 cools the coolant inside the hollow shell 11. The heat transfer of the heat conducting plate 13 exchanges heat between the coolant and the air guide plate 10. The air guide plate 10 is cooled, thereby cooling the outside air. Part of the cooled air is directly blown into the cabinet 1 through the ventilation slots 5, and the other part enters the connecting hose 9 and is blown out through the air outlet strip 8. The air outlet position of the air outlet strip 8 can be adjusted by sliding the air outlet strip 8 in the slide slot 7, so that the concentrated heating area in the cabinet 1 can be cooled by concentrated blowing. In addition, through the arrangement of multiple ventilation slots 5 and the air outlet strips 8 on both sides, multi-directional air outlet can be achieved, thereby improving the uniform distribution of wind force in the cabinet 1 and improving the overall heat dissipation effect of the low-voltage incoming line cabinet.

[0028] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Claims

1. Low voltage incoming line cabinet, including: A cabinet (1), characterized in that: a heat dissipation back plate (4) is provided on one side of the interior of the cabinet (1), a ventilation slot (5) is provided on the heat dissipation back plate (4), a wind guide plate (10) is provided on one side of the heat dissipation back plate (4) below the ventilation slot (5), a hollow shell (11) is provided on one side of the bottom of the wind guide plate (10), a semiconductor refrigeration plate (12) is provided on one side of the outer wall of the hollow shell (11), a heat conduction plate (13) is provided on one side of the hollow shell (11), one side of the heat conduction plate (13) is in contact with one side of the wind guide plate (10), a fan (6) is provided on one side of the back plate of the cabinet (1), and the contact area between the wind guide plate (10) and the heat conduction plate (13) is wavy.

2. The low voltage incoming line cabinet according to claim 1 is characterized in that: The cabinet (1) is provided with a cabinet door (2) on a side away from the fan (6), and the fan (6) is a forward and reverse ventilator. When the fan (6) rotates clockwise, it is forward rotation, and the fan blades suck air from the cabinet (1) and discharge it outside the cabinet (1). When the fan (6) rotates counterclockwise, it is reverse rotation, and the fan blades suck air from the back of the cabinet (1). A lower heat sink (3) is provided on one side of the bottom of the cabinet (1).

3. The low voltage incoming line cabinet according to claim 1 is characterized in that: The wind guide plate (10) comprises an inclined plate portion and a wave plate portion, the inclined plate portion is fixedly connected to the heat dissipation back plate (4), the inclined plate portion is arranged obliquely downward, and the highest point of the inclined surface of the inclined plate portion is close to the ventilation slot (5).

4. The low voltage incoming line cabinet according to claim 1 is characterized in that: The inner walls of both sides of the cabinet (1) are provided with sliding grooves (7), the outer sides of the sliding grooves (7) are slidably provided with air outlet strips (8), one side of the air outlet strip (8) is provided with a connecting hose (9), and one end of the connecting hose (9) passes through the heat dissipation back plate (4).

5. The low voltage incoming line cabinet according to claim 1 is characterized in that: There are a plurality of ventilation slots (5), and the plurality of ventilation slots (5) are arranged at equal distances from top to bottom on the heat dissipation back plate (4).

6. The low voltage incoming line cabinet according to claim 1 is characterized in that: The hollow shell (11) is filled with cooling liquid, and one end of the heat conducting plate (13) is in contact with the cooling liquid.

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