Ventilation and heat dissipation structure of electric control cabinet

Abstract

The utility model discloses a ventilation and heat dissipation structure of an electric control cabinet, which comprises a ventilation device combined with an electric control cabinet body, a back sealing plate combined with the electric control cabinet body for sealing, an axial flow fan and a separation box which are fixed with the back sealing plate through bolts, and an air inlet cover communicated with the interior of the separation box, a fixing plate is vertically arranged on the side face, away from the back sealing plate, of the separation box, and a shielding cover is fixed to the top surface of the electric control cabinet body through screws. The heat dissipation assembly comprises a first heat dissipation sheet fixedly installed on the fixing plate through a screw and a second heat dissipation sheet fixed to the side face of the separation box through a screw, and an element installation plate is arranged on the second heat dissipation sheet; according to the utility model, through the designed ventilation gas transmission assembly, the gas in the electric control cabinet body flows towards the top end and the bottom end, the exhaust design of changing the flow direction of the heat gas flow in the cabinet body and smooth ventilation is provided, and the flowing gas flow is prevented from being blocked by the electrical elements to influence the heat dissipation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electric control cabinet heat dissipation, specifically relates to an electric control cabinet ventilation and heat dissipation structure. BACKGROUND

[0002] The electric control cabinet has the functions of power distribution, management and control, and also has safety protection functions such as overcurrent, overvoltage and undervoltage, various electrical elements and control devices are integrated in the metal cabinet body, heat is generated when the electrical elements and control devices work, if the heat cannot be dissipated in time, the elements in the cabinet will malfunction due to temperature rise in the long run, a common ventilation and heat dissipation method for the electric control cabinet is to use a fan to ventilate and dissipate heat, the air inside and outside the cabinet body is circulated by the electric fan, so that the heat inside the cabinet body is dissipated.

[0003] When the existing electric control cabinet dissipates heat by using a fan, the position of the fan is fixed, and the positions of various electrical elements and control devices integrated in the cabinet body are fixed, when the air inside and outside the cabinet body circulates, the air containing heat inside the cabinet body circulates, the circulating air is blocked by the electrical elements and control devices, cannot be smoothly discharged by the fan, the heat dissipation inside the cabinet body is hindered, and the heat accumulates inside the cabinet body, in addition, when the air inside and outside the cabinet body circulates, dust and impurities in the external air may accumulate inside the cabinet body and adhere to the electrical elements, which may affect the performance of the electrical elements, and there are deficiencies.

[0004] When the existing electric control cabinet is used, there is no design problem of changing the heat flow direction inside the cabinet body to achieve smooth ventilation and exhaust, therefore, the electric control cabinet ventilation and heat dissipation structure is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an electric control cabinet ventilation and heat dissipation structure to solve the problem of no design of changing the heat flow direction inside the cabinet body to achieve smooth ventilation and exhaust of the electric control cabinet in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an electric control cabinet ventilation and heat dissipation structure, comprising

[0007] A ventilation device combined and installed with the electric control cabinet body, comprising a back sealing plate combined and sealed with the electric control cabinet body, an axial flow fan and a separation box fixed with the back sealing plate through bolts, and an air inlet cover communicated with the inside of the separation box, the side of the separation box away from the back sealing plate is vertically provided with a fixed plate, and a shielding cover is fixed on the top surface of the electric control cabinet body through screws;

[0008] A heat dissipation assembly, comprising a first heat sink fixedly installed on the fixed plate through screws, and a second heat sink fixed with the side of the separation box through screws, and an element mounting plate is arranged on the second heat sink;

[0009] The ventilation and gas conveying assembly comprises a fan fixed to the top surface of the electric control cabinet by screws, an air inlet pipe communicated with the fan, a gas collecting box communicated with the air inlet pipe, a box cover combined with the gas collecting box, a gas conveying pipe penetrating through the top of the electric control cabinet and communicated with the inside of the gas collecting box, and an air outlet pipe, wherein an air outlet nozzle is arranged on the air outlet pipe, and a plugging head is arranged at one end of the air outlet pipe.

[0010] Preferably, the separation box is embedded in the inside of the electric control cabinet, the outer surface of the separation box is attached to the inner surface of the electric control cabinet, and the separation box divides the inside space of the electric control cabinet into a heat dissipation area A and a ventilation area B.

[0011] Preferably, a filter screen plate embedded in the gas collecting box is arranged on the box cover, and the filter screen plate comprises an outer frame part and an inner filter cloth.

[0012] Preferably, the air outlet pipe is communicated with the air outlet nozzle and the gas conveying pipe, and the air inlet conveying path of the fan is in sequence of the fan, the air inlet pipe, the gas collecting box, the box cover, the gas conveying pipe, the air outlet pipe and the air outlet nozzle.

[0013] Preferably, a mesh cage column embedded in the inside of the air outlet pipe is arranged on the plugging head, and the plugging head is connected with the air outlet pipe by screwing.

[0014] Preferably, a gauze sleeve is sleeved on the outer side of the mesh cage column, and the air outlet nozzle is in the shape of a funnel.

[0015] Preferably, the second heat dissipation fin is perpendicular to the first heat dissipation fin, both ends of the element mounting plate are in right angle structure, and the air inlet cover is in hollow structure.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1. In the utility model, the ventilation and gas conveying assembly is designed to make the gas in the inside of the electric control cabinet flow to the top end and the bottom end positions, change the heat flow direction in the inside of the cabinet, and smoothly ventilate and discharge the gas, so that the flowing gas is not blocked by the electrical elements and the heat dissipation is not affected.

[0018] 2. In the utility model, the separation box is designed to separate the axial flow fan from the inside of the electric control cabinet, so that the impurities in the external air cannot enter the inside of the electric control cabinet from the gap of the axial flow fan, and the dustproof effect is achieved.

[0019] 3. In the utility model, the axial flow fan, the first heat dissipation fin and the second heat dissipation fin mounted on the separation box are designed to increase the heat dissipation area and heat conduction, so that the heat in the inside of the electric control cabinet is conducted to the separation box through the first heat dissipation fin and the second heat dissipation fin, and then dissipated by the axial flow fan. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1A structure schematic view of the utility model;

[0021] Figure 2 A structure schematic view of the utility model's electric control cabinet's section structure;

[0022] Figure 3 A structure schematic view of the utility model's partition box's side structure;

[0023] Figure 4 A structure schematic view of the utility model's gas collecting box's side structure;

[0024] Figure 5 A structure schematic view of the utility model's air outlet pipe's front structure;

[0025] In the drawing: 1, electric control cabinet; 2, back sealing plate; 3, axial flow fan; 4, partition box; 5, first fin; 6, second fin; 7, air inlet cover; 9, air outlet pipe; 11, shielding cover; 41, fixed plate; 61, element mounting plate; 81, fan; 82, air inlet pipe; 83, gas collecting box; 84, box cover; 85, gas conveying pipe; 91, air outlet nozzle; 92, plugging head; 841, filter screen plate; 921, mesh cage column; 922, screen cover. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the utility model.

[0027] Please refer to Figures 1 to 5The utility model provides a technical scheme: a ventilation and heat dissipation structure of electric control cabinet, including ventilation device combined with electric control cabinet body 1, including back sealing plate 2 combined with electric control cabinet body 1 seal, axial flow fan 3 and partition box 4 fixed with back sealing plate 2 through bolt, air inlet cover 7 with partition box 4 internal communication, back sealing plate 2 and electric control cabinet body 1 are fixed into sealed cabinet body structure through screw, partition box 4 plays the role of partition, makes axial flow fan 3 and electric control cabinet body 1 inside partition, avoid the impurity in outside air from the position clearance of axial flow fan 3 into electric control cabinet body 1 inside, has dustproof effect, air inlet cover 7 communicates partition box 4 and electric control cabinet body 1, does not influence the airflow circulation containing heat in electric control cabinet body 1 inside, axial flow fan 3 runs, reaches the effect of discharging the airflow in electric control cabinet body 1 inside, the side of the partition box 4 away from back sealing plate 2 is perpendicular to fixed plate 41, fixed plate 41 is fixed with partition box 4 through screw, the top surface of electric control cabinet body 1 is fixed with shielding cover 11 through screw, shielding cover 11 plays the role of shielding fan 81 and gas collection box 83, the installation distribution of partition box 4 and first radiating fin 5 and second radiating fin 6 satisfies the electric component arrangement condition in electric control cabinet body 1 inside, can be designed according to the specific arrangement in electric control cabinet body 1 inside, heat dissipation subassembly, including first radiating fin 5 fixedly installed on fixed plate 41 through screw, second radiating fin 6 fixed with the side of partition box 4 through screw, be equipped with element mounting plate 61 on second radiating fin 6, fixed plate 41 and first radiating fin 5 and second radiating fin 6 are made of aluminium alloy heat dissipation material, first radiating fin 5 and second radiating fin 6 contact with the gas containing heat in electric control cabinet body 1, reach the effect of conducting heat, make heat conduct to low temperature partition box 4, and then axial flow fan 3 carries out heat dissipation to partition box 4, ventilation gas delivery subassembly, including fan 81 fixed with the top surface of electric control cabinet body 1 through screw, air inlet pipe 82 with fan 81 communication, gas collection box 83 with air inlet pipe 82 communication, box cover 84 with gas collection box 83 combination connection, gas delivery pipe 85 and gas outlet pipe 9 with the top of electric control cabinet body 1 and top end with gas collection box 83 internal communication, fan 81 plays the role of conveying airflow, makes the gas in electric control cabinet body 1 opposite, be equipped with gas outlet nozzle 91 on gas outlet pipe 9, one end of gas outlet pipe 9 is equipped with plugging head 92, plugging head 92 seals gas outlet pipe 9, when gas is delivered to electric control cabinet body 1 inside, gas inlet delivery path is fan 81, air inlet pipe 82, gas collection box 83, box cover 84, gas delivery pipe 85, gas outlet pipe 9, gas outlet nozzle 91 in proper order, the gas that gas outlet nozzle 91 sprays moves to the direction of corresponding first radiating fin 5, under the action of the airflow that gas outlet nozzle 91 sprays, the gas in electric control cabinet body 1 flows to first radiating fin 5 at the top end and bottom end position of electric control cabinet body 1, then makes the gas along air inlet cover 7 enter partition box 4 inside, has the effect of changing the heat airflow flow direction in cabinet body inside, to reach the purpose of smooth ventilation exhaust heat dissipation.

[0028] In the embodiment, the partition box 4 is embedded in the inside of the electric control cabinet body 1, the outer surface of the partition box 4 is attached to the inner surface of the electric control cabinet body 1, the partition box 4 divides the inside space of the electric control cabinet body 1 into the heat dissipation area A and the ventilation area B, the partition box 4 separates the axial flow fan 3 from the inside of the electric control cabinet body 1, and the impurities in the external air are prevented from entering the inside of the electric control cabinet body 1 from the gap at the position of the axial flow fan 3, so that the dustproof effect is achieved.

[0029] In the embodiment, the filter screen plate 841 embedded in the gas collecting box 83 is arranged on the box cover 84, the filter screen plate 841 comprises an outer frame portion and an inner filter cloth, when the fan 81 transports the gas, the gas flows through the gas collecting box 83, and the filter screen plate 841 filters out the dust impurities contained in the transported gas, so that the dust impurities are prevented from accumulating in the inside of the electric control cabinet body 1.

[0030] In the embodiment, the gas outlet pipe 9 is communicated with the gas outlet nozzle 91 and the gas conveying pipe 85, the air inlet conveying path of the fan 81 is sequentially the fan 81, the air inlet pipe 82, the gas collecting box 83, the box cover 84, the gas conveying pipe 85, the gas outlet pipe 9 and the gas outlet nozzle 91, the gas sprayed out of the gas outlet nozzle 91 moves to the direction of the corresponding first heat dissipation fin 5, and the inside and outside of the electric control cabinet body 1 can realize the circulation of the internal and external air flows.

[0031] In the embodiment, the mesh cage column 921 embedded in the inside of the gas outlet pipe 9 is arranged on the plugging head 92, the plugging head 92 is connected with the gas outlet pipe 9 through screwing, the mesh cage column 921 is sleeved with the gauze cover 922 on the outer side, the gas outlet nozzle 91 is in the shape of a funnel, the gauze cover 922 is sleeved on the mesh cage column 921, the mesh cage column 921 supports the gauze cover 922, and the gauze cover 922 plays a role in filtering the impurities in the gas.

[0032] In the embodiment, the second heat dissipation fin 6 is perpendicular to the first heat dissipation fin 5, the two ends of the element mounting plate 61 are in right angle structures, the element mounting plate 61 is fixed with the inner side wall of the electric control cabinet body 1 through screws, and the air inlet cover 7 is in a hollow structure.

[0033] The working principle and use process of the utility model are as follows:

[0034] When the inside of the electric control cabinet body 1 is ventilated and cooled, the fan 81 operates and transports the external gas to the inside of the electric control cabinet body 1.

[0035] When the fan 81 transports the gas to the inside of the electric control cabinet body 1, the air inlet conveying path of the gas is sequentially the fan 81, the air inlet pipe 82, the gas collecting box 83, the box cover 84, the gas conveying pipe 85, the gas outlet pipe 9 and the gas outlet nozzle 91.

[0036] The gas sprayed by the gas outlet 91 moves to the direction of the corresponding first radiating fin 5, and the gas in the electric control cabinet body 1 flows to the first radiating fin 5 at the top end and the bottom end of the electric control cabinet body 1 under the action of the airflow sprayed by the gas outlet 91, and then the gas enters the partition box 4 inside the air inlet cover 7, which has the effect of changing the heat airflow direction in the cabinet body, so as to achieve the purpose of smooth ventilation and exhaust heat dissipation.

[0037] The first radiating fin 5 and the second radiating fin 6 contact the gas containing heat in the electric control cabinet body 1, so as to achieve the effect of conducting heat and conducting heat to the low-temperature partition box 4.

[0038] The gas containing heat flows to the space between the partition box 4 and the back sealing plate 2.

[0039] The axial flow fan 3 operates, the airflow between the partition box 4 and the back sealing plate 2 is discharged by the axial flow fan 3, and the axial flow fan 3 radiates heat to the partition box 4.

[0040] The partition box 4 separates the axial flow fan 3 from the inside of the electric control cabinet body 1, avoids impurities in the external air from entering the inside of the electric control cabinet body 1 through the gap at the position of the axial flow fan 3, and has the effect of dust prevention.

[0041] In summary: the application has the functions of changing the heat airflow direction in the cabinet body, achieving smooth ventilation and exhaust heat dissipation, the fan 81 transports the gas, the gas outlet 91 sprays the gas, the gas in the electric control cabinet body 1 flows to the first radiating fin 5 at the top end and the bottom end of the electric control cabinet body 1, the airflow between the partition box 4 and the back sealing plate 2 is discharged by the axial flow fan 3, and the ventilation and heat dissipation process is not blocked by the electrical elements installed on the element mounting plate 61.

[0042] Although the embodiments of the utility model have been shown and described (see the above detailed description), it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An electric control cabinet ventilation and heat dissipation structure, characterized in that: Comprising The ventilation device combined with the electric control cabinet body (1) comprises a back sealing plate (2) combined with the electric control cabinet body (1), an axial flow fan (3) and a partition box (4) fixed with the back sealing plate (2) by bolts, and an air inlet cover (7) in communication with the inside of the partition box (4). The side of the partition box (4) away from the back sealing plate (2) is vertically provided with a fixed plate (41). The top surface of the electric control cabinet body (1) is fixed with a shielding cover (11) by screws. The heat dissipation assembly comprises a first heat sink (5) fixedly installed on the fixed plate (41) by screws, and a second heat sink (6) fixed with the side of the partition box (4) by screws. The second heat sink (6) is provided with an element mounting plate (61). The ventilation and gas conveying assembly comprises a fan (81) fixed with the top surface of the electric control cabinet body (1) by screws, an air inlet pipe (82) in communication with the fan (81), a gas collecting box (83) in communication with the air inlet pipe (82), a box cover (84) combined with the gas collecting box (83), a gas conveying pipe (85) penetrating through the top of the electric control cabinet body (1) and in communication with the inside of the gas collecting box (83), and an air outlet pipe (9). The air outlet pipe (9) is provided with an air outlet nozzle (91). One end of the air outlet pipe (9) is provided with a plugging head (92).

2. The ventilation and heat dissipation structure of an electric control cabinet according to claim 1, characterized in that: The partition box (4) is embedded in the inside of the electric control cabinet body (1). The outer surface of the partition box (4) is attached to the inner surface of the electric control cabinet body (1). The partition box (4) divides the inside space of the electric control cabinet body (1) into a heat dissipation area A and a ventilation area B.

3. The ventilation and heat dissipation structure of an electric control cabinet according to claim 1, characterized in that: The box cover (84) is provided with a filter screen plate (841) embedded in the gas collecting box (83). The filter screen plate (841) comprises an outer frame portion and an inner filter cloth.

4. The ventilation and heat dissipation structure of an electric control cabinet according to claim 1, characterized in that: The air outlet pipe (9) is in communication with the air outlet nozzle (91) and the gas conveying pipe (85). The air inlet conveying path of the fan (81) is in sequence of the fan (81), the air inlet pipe (82), the gas collecting box (83), the box cover (84), the gas conveying pipe (85), the air outlet pipe (9), and the air outlet nozzle (91).

5. The ventilation and heat dissipation structure of an electric control cabinet according to claim 1, characterized in that: The plugging head (92) is provided with a mesh cage column (921) embedded in the inside of the air outlet pipe (9). The plugging head (92) is threadedly connected with the air outlet pipe (9).

6. The ventilation and heat dissipation structure of an electric control cabinet according to claim 5, characterized in that: The mesh cage column (921) is provided with a screen mesh sleeve (922) on the outside. The air outlet nozzle (91) is in the shape of a funnel.

7. The ventilation and heat dissipation structure of an electric control cabinet according to claim 1, characterized in that: The second heat sink (6) is perpendicular to the first heat sink (5). The two ends of the element mounting plate (61) are both in right angle structure. The air inlet cover (7) is in hollow structure.

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