A drawer-type low-voltage cabinet heat dissipation structure

Abstract

The present invention is applicable to the technical field of low-voltage cabinets, and provides a heat dissipation structure for a drawer-type low-voltage cabinet, which includes a low-voltage cabinet body. Drawers are installed inside the low-voltage cabinet body along the height direction. A positioning and locking mechanism is arranged on the low-voltage cabinet body and the drawers for firmly installing a plurality of drawers inside the low-voltage cabinet body. One part of the heat dissipation mechanism is arranged inside the low-voltage cabinet body, and the other part of the heat dissipation mechanism is arranged inside the drawers. At the same time, the two parts are communicated. The shielding mechanism is symmetrically installed at the top of the low-voltage cabinet body and shields the low-voltage cabinet body in the unfolded state, and also pushes the drawers to slide along the low-voltage cabinet body when folded, so as to facilitate the replacement of the internal components of the drawers; The structure of this application has high strength, and the drawers are not prone to looseness and falling off, can provide good protection for the internal components of the low-voltage cabinet, and also has the characteristics of large heat dissipation area and high heat dissipation efficiency, and can timely export the heat generated by the components, so as to provide a good working environment inside.

Description

Technical Field

[0001] The invention belongs to the technical field of low-voltage switch cabinets, and particularly relates to a heat dissipation structure for a drawer-type low-voltage switch cabinet. Background Art

[0002] At present, multiple partition boards are installed inside the cabinet body of the low-voltage switch cabinet. Drawers are slidably installed on the partition boards, and handles are installed on the outer surfaces of the drawers for pulling the drawers to slide along the cabinet body and the partition boards. When the internal components work and generate heat, heat dissipation fans are installed inside the cabinet body. The heat dissipation fans work to send the gas outside the cabinet body into the interior, and carry heat along the ventilation holes to be discharged outside when passing through the heating components.

[0003] However, this type of low-voltage switch cabinet has problems of low safety during use. When being carried or tilted, the drawers and the internal components are prone to falling off, and the heat dissipation area is relatively small, resulting in uneven heat dissipation and too high local temperature, which affects the normal operation of the low-voltage switch cabinet. Summary of the Invention

[0004] An object of an embodiment of the invention is to provide a heat dissipation structure for a drawer-type low-voltage switch cabinet, aiming to solve the problems raised in the above background art.

[0005] The embodiment of the invention is implemented as follows. A heat dissipation structure for a drawer-type low-voltage switch cabinet includes a low-voltage switch cabinet body, and further includes:

[0006] Drawers, multiple drawers are provided, and the drawers are installed inside the low-voltage switch cabinet body along the height direction;

[0007] A positioning and locking mechanism, which is arranged on the low-voltage switch cabinet body and the drawers, is used to firmly install the multiple drawers inside the low-voltage switch cabinet body to prevent the drawers from falling off when stressed;

[0008] A heat dissipation mechanism, a part of the heat dissipation mechanism is arranged inside the low-voltage switch cabinet body, and another part of the heat dissipation mechanism is arranged inside the drawers, and the two parts are communicated to facilitate air flow for heat dissipation;

[0009] A shielding mechanism, which is symmetrically installed at the top of the low-voltage switch cabinet body, shields the low-voltage switch cabinet body in the unfolded state, and is also convenient for replacing the internal components of the drawers when folded.

[0010] Preferably, the drawers include a first drawer, a second drawer, a third drawer, and a fourth drawer;

[0011] Among them, the first drawer, the second drawer, the third drawer, and the fourth drawer are arranged from bottom to top inside the low-voltage switch cabinet body, and the adjacent first drawer, second drawer, third drawer, and fourth drawer are in contact with each other to cooperate with the low-voltage switch cabinet body to form a sealed space;

[0012] Horizontal pull handles are fixedly installed on the outer surfaces of the first drawer, the second drawer, the third drawer and the fourth drawer for pushing the first drawer, the second drawer, the third drawer and the fourth drawer to slide along the low-voltage cabinet body.

[0013] Preferably, the positioning and locking mechanism comprises a limiting strip, a limiting groove, a limiting hole, a longitudinal inserting rod and a longitudinal slot;

[0014] The limit bars are symmetrically installed on both sides of the first drawer, the second drawer, the third drawer and the fourth drawer, the limit grooves are horizontally and longitudinally arranged inside the low-voltage cabinet body, and the limit grooves are slidably connected to the limit bars;

[0015] The limiting hole is arranged on the limiting strip, the longitudinal slot is vertically arranged in the low-voltage cabinet body, and the longitudinal insertion rod is slidably installed in the limiting hole and the longitudinal slot.

[0016] Preferably, the positioning locking mechanism further comprises an external threaded portion and a toggle frame;

[0017] The external threaded portion is arranged at the top of the longitudinal insertion rod, and the external threaded portion is also threadedly connected to the connection hole arranged at the top of the low-voltage cabinet body;

[0018] The toggle frame is fixedly installed on the top end of the longitudinal insertion rod. The toggle frame consists of a fixed plate and a toggle rod, and is used to lock the positions of the first drawer, the second drawer, the third drawer and the fourth drawer.

[0019] Preferably, the heat dissipation mechanism comprises a first air guide hole, a second air guide hole, a fixing rod and an exhaust hole;

[0020] The air guide holes are evenly arranged at the bottom of the first drawer, the second drawer, the third drawer and the fourth drawer;

[0021] The air guide holes are installed at equal intervals on both sides of the first drawer, the second drawer, the third drawer and the fourth drawer;

[0022] The fixing rod is installed on the inner side of the first drawer, the second drawer, the third drawer and the fourth drawer;

[0023] The exhaust hole is arranged at the top of the low-pressure cabinet body so as to facilitate the exhaust of gas when it flows inside the low-pressure cabinet body.

[0024] Preferably, the heat dissipation mechanism further comprises a cooling device, an air injection hole, a flow channel, a first spray hole and a second spray hole;

[0025] The cooling device is installed outside the low-pressure cabinet body, and the air injection hole, flow channel, spray hole 1 and spray hole 2 are all arranged in the low-pressure cabinet body, and the air injection hole, flow channel, spray hole 1 and spray hole 2 are communicated with each other;

[0026] Among them, the first spray hole is arranged corresponding to the gap between adjacent fixed rods, and the second spray hole is arranged corresponding to the second air guide hole, so as to facilitate the gas to move along the surface of the heating element inside the low-voltage cabinet and carry the heat generated during its operation.

[0027] Preferably, the shielding mechanism includes a vertical rod, a first swing plate, a second swing plate, an arc-shaped sleeve, an arc-shaped rod and an elastic support member;

[0028] The vertical rod is fixedly installed at the top of the low-voltage cabinet body, and the first swing plate and the second swing plate are hinged to the top of the vertical rod;

[0029] The arc-shaped sleeves are symmetrically arranged on both sides of the vertical rod, the arc-shaped rod is slidably installed on the arc-shaped sleeve, the elastic support member is arranged inside the arc-shaped sleeve, and the end of the elastic support member is connected to the arc-shaped rod.

[0030] The heat dissipation structure of the drawer-type low-voltage cabinet provided by the embodiment of the present invention has the characteristics of high structural strength. The drawer is not easy to loosen and fall off when the low-voltage cabinet is stressed and tilted, and can provide good protection for the internal components of the low-voltage cabinet. It also has the characteristics of large heat dissipation area and high heat dissipation efficiency. The cooling gas can cover the surface of the heating elements inside the low-voltage cabinet during flow and timely export the heat generated by the components, so as to provide a good working environment inside. In addition, it also has the functions of rain shielding and dust prevention. Description of the Drawings

[0031] Figure 1 It is a schematic structural diagram of a heat dissipation structure of a drawer-type low-voltage cabinet provided by an embodiment of the present invention;

[0032] Figure 2 It is a three-dimensional structure diagram of the first drawer in the heat dissipation structure of the drawer-type low-voltage cabinet provided by an embodiment of the present invention;

[0033] Figure 3 It is a top view of the first drawer in the heat dissipation structure of the drawer-type low-voltage cabinet provided by an embodiment of the present invention;

[0034] Figure 4 It is Figure 1 The partial enlarged view at B in

[0035] Figure 5 It is Figure 1 The sectional view taken along A-A in

[0036] Figure 6 It is Figure 1 The partial enlarged view at C in

[0037] In the attached drawings: 1 - low-voltage cabinet body; 2 - first drawer; 3 - second drawer; 4 - third drawer; 5 - fourth drawer; 6 - horizontal handle; 7 - limit bar; 8 - limit groove; 9 - limit hole; 10 - longitudinal insertion rod; 11 - longitudinal slot; 12 - external thread part; 13 - toggle frame; 14 - first air guide hole; 15 - second air guide hole; 16 - fixing rod; 17 - cooling device; 18 - injection hole; 19 - flow channel; 20 - first spray hole; 21 - second spray hole; 22 - exhaust hole; 23 - vertical rod; 24 - first swing plate; 25 - second swing plate; 26 - arc-shaped sleeve; 27 - arc-shaped rod; 28 - elastic support; 100 - positioning and locking mechanism; 200 - heat dissipation mechanism; 300 - shielding mechanism. Detailed implementation mode

[0038] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0039] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0040] As Figures 1-6 shown, it is a structural diagram of a heat dissipation structure of a drawer-type low-voltage cabinet provided by an embodiment of the present invention, including a low-voltage cabinet body 1, drawers, a positioning and locking mechanism 100, a heat dissipation mechanism 200 and a shielding mechanism 300. A plurality of drawers are provided, and the drawers are installed inside the low-voltage cabinet body 1 along the height direction; the positioning and locking mechanism 100 is arranged on the low-voltage cabinet body 1 and the drawers, and is used to firmly install the plurality of drawers inside the low-voltage cabinet body 1 to prevent the drawers from falling off when stressed; a part of the heat dissipation mechanism 200 is arranged inside the low-voltage cabinet body 1, and another part of the heat dissipation mechanism 200 is arranged inside the drawers, and the two parts are communicated to facilitate air flow and heat dissipation; the shielding mechanism 300 is symmetrically installed at the top of the low-voltage cabinet body 1, and shields the low-voltage cabinet body 1 in the unfolded state, and is also convenient for replacing the internal components of the drawers when folded.

[0041] When the heat dissipation mechanism of the drawer-type low-voltage cabinet provided by this application is actually used, it has the characteristics of high structural strength. The drawers are not easy to loosen and fall off when the low-voltage cabinet is stressed and tilted, and can provide good protection for the internal components of the low-voltage cabinet. It also has the characteristics of large heat dissipation area and high heat dissipation efficiency. The cooling gas can cover the surfaces of the heat-generating components inside the low-voltage cabinet during flow and timely export the heat generated by the components, so as to provide a good working environment inside. In addition, it also has the functions of rain shielding and dust prevention.

[0042] In an example of the present invention, different components are placed in the drawer according to requirements. After installation, when the shielding mechanism 300 is folded, the position of the drawer is fixed by the positioning and locking mechanism 100, and the heat generated by the operation of the internal components of the low-voltage cabinet is discharged outward through the shielding mechanism 300.

[0043] As Figure 1 shown, as a preferred embodiment of the present invention, the drawer includes a first drawer 2, a second drawer 3, a third drawer 4, and a fourth drawer 5;

[0044] Among them, the first drawer 2, the second drawer 3, the third drawer 4, and the fourth drawer 5 are arranged from bottom to top inside the low-voltage cabinet body 1, and the adjacent first drawer 2, second drawer 3, third drawer 4, and fourth drawer 5 are in contact, so as to cooperate with the low-voltage cabinet body 1 to form a sealed space;

[0045] The outer surfaces of the first drawer 2, the second drawer 3, the third drawer 4, and the fourth drawer 5 are fixedly installed with horizontal handles 6 for pushing the first drawer 2, the second drawer 3, the third drawer 4, and the fourth drawer 5 to slide along the low-voltage cabinet body 1.

[0046] During the specific implementation of this embodiment, different types of components are stored in the first drawer 2, the second drawer 3, the third drawer 4, and the fourth drawer 5 in sequence in the present application. When replacing, the first drawer 2, the second drawer 3, the third drawer 4, and the fourth drawer 5 are locked by the positioning and locking mechanism 100, and the staff can draw them out for replacement as needed.

[0047] As Figure 1 and Figure 2 shown, as another preferred embodiment of the present invention, the positioning and locking mechanism 100 includes a limiting strip 7, a limiting groove 8, a limiting hole 9, a longitudinal insertion rod 10, and a longitudinal slot 11;

[0048] The limiting strips 7 are symmetrically installed on both sides of the first drawer 2, the second drawer 3, the third drawer 4, and the fourth drawer 5. The limiting grooves 8 are horizontally and longitudinally arranged inside the low-voltage cabinet body 1, and the limiting grooves 8 are slidably connected to the limiting strips 7;

[0049] The limiting holes 9 are provided on the limiting strips 7. The longitudinal slots 11 are vertically arranged in the low-voltage cabinet body 1, and the longitudinal insertion rods 10 are slidably installed in the limiting holes 9 and the longitudinal slots 11.

[0050] During the specific implementation of this embodiment, when it is necessary to replace the components in the first drawer 2, the second drawer 3, the third drawer 4 or the fourth drawer 5, the longitudinal insertion rod 10 is pulled out from the limiting hole 9 and the longitudinal slot 11, and the horizontal handle 6 is pulled outward, and the limiting strip 7 installed on the side of the first drawer 2, the second drawer 3, the third drawer 4 or the fourth drawer 5 at the corresponding position slides along the limiting groove 8. After replacing the components in the first drawer 2, the second drawer 3, the third drawer 4 or the fourth drawer 5, the first drawer 2, the second drawer 3, the third drawer 4 or the fourth drawer 5 is pushed back to the deepest part of the low-voltage cabinet body 1. In this state, the limiting hole 9 and the hole on the longitudinal slot 11 are on the same axis, and when the longitudinal insertion rod 10 is reinserted into the limiting hole 9 and the longitudinal slot 11, the first drawer 2, the second drawer 3, the third drawer 4 and the fourth drawer 5 are fixed, which can effectively prevent the first drawer 2, the second drawer 3, the third drawer 4 and the fourth drawer 5 from falling outward along the low-voltage cabinet body 1 when the low-voltage cabinet body 1 is tipped over.

[0051] like Figure 1 and Figure 4 As shown, as another preferred embodiment of the present invention, the positioning locking mechanism 100 further includes an external threaded portion 12 and a toggle frame 13;

[0052] The external threaded portion 12 is disposed at the top of the longitudinal insertion rod 10, and the external threaded portion 12 is also threadedly connected to the connection hole arranged at the top of the low-voltage cabinet body 1;

[0053] The shifting frame 13 is fixedly installed on the top end of the longitudinal insertion rod 10. The shifting frame 13 is composed of a fixed plate and a shifting rod, and is used to lock the positions of the first drawer 2, the second drawer 3, the third drawer 4 and the fourth drawer 5.

[0054] During the specific implementation of this embodiment, when the longitudinal insertion rod 10 is inserted into the low-voltage cabinet body 1, the toggle frame 13 is also rotated, and the external threaded portion 12 is installed on the low-voltage cabinet body 1, thereby completing the fixation of the positions of the first drawer 2, the second drawer 3, the third drawer 4 and the fourth drawer 5, and the external threaded portion 12 adopts a self-locking connection method; in addition, the surface of the toggle rod is provided with an anti-slip sleeve, which can increase the static friction between the palm when holding, thereby effectively preventing the toggle frame 13 from loosening when toggling.

[0055] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, as another preferred embodiment of the present invention, the heat dissipation mechanism 200 includes an air guide hole 14, an air guide hole 2 15, a fixing rod 16 and an exhaust hole 22;

[0056] The first air guide holes 14 are uniformly arranged at the bottoms of the first drawer 2, the second drawer 3, the third drawer 4 and the fourth drawer 5;

[0057] The second air guide holes 15 are installed at equal intervals on both sides of the first drawer 2, the second drawer 3, the third drawer 4 and the fourth drawer 5;

[0058] The fixing rods 16 are installed inside the first drawer 2, the second drawer 3, the third drawer 4 and the fourth drawer 5;

[0059] The exhaust holes 22 are arranged at the top of the low-voltage cabinet body 1 to facilitate the outward discharge of gas when it flows inside the low-voltage cabinet body 1.

[0060] During the specific implementation of this embodiment, when the components inside the first drawer 2, the second drawer 3, the third drawer 4 and the fourth drawer 5 generate heat, a part of the cooled gas cools the bottom ends of the components along the first air guide holes 14, and another part cools the sides of the components along the second air guide holes 15. In addition, the cooling gas also blows towards the surface of the components through the gaps between adjacent fixing rods 16, thereby expanding the cooling area and improving the cooling efficiency of the components inside the low-voltage cabinet.

[0061] As Figure 5 shown, as another preferred embodiment of the present invention, the heat dissipation mechanism 200 further includes a cooling device 17, an air injection hole 18, a flow channel 19, a first spray hole 20 and a second spray hole 21;

[0062] The cooling device 17 is installed outside the low-voltage cabinet body 1, and the air injection hole 18, the flow channel 19, the first spray hole 20 and the second spray hole 21 are all arranged inside the low-voltage cabinet body 1, and the air injection hole 18, the flow channel 19, the first spray hole 20 and the second spray hole 21 are communicated with each other;

[0063] Among them, the first spray hole 20 is arranged corresponding to the gap between adjacent fixing rods 16, and the second spray hole 21 is arranged corresponding to the second air guide holes 15 to facilitate the gas to move along the surface of the heat-generating components inside the low-voltage cabinet and carry the heat generated during their operation.

[0064] During the specific implementation of this embodiment, the cooling device 17 operates to suck in external air, cool it, and then enter the flow channel 19 along the air injection hole 18. The cooling gas flows along the flow channel 19, passes through the first spray hole 20 and sprays towards the gap between adjacent fixing rods 16. The cooling gas also passes through the second spray hole 21 along the flow channel 19 and sprays towards the second air guide holes 15. Moreover, when the cooling gas moves upward, it also passes through the gaps between multiple drawers and the low-voltage cabinet body 1 and carries the heat dissipated by the components inside the low-voltage cabinet during their operation during the flow of the cooling gas.

[0065] As Figure 1 and Figure 6As shown in FIG. 1 , as another preferred embodiment of the present invention, the shielding mechanism 300 includes a vertical rod 23, a swing plate 1 24, a swing plate 25, an arc sleeve 26, an arc rod 27 and an elastic support member 28;

[0066] The vertical rod 23 is fixedly installed on the top of the low-voltage cabinet body 1, and the swing plate 1 24 and the swing plate 2 25 are hinged on the top of the vertical rod 23;

[0067] The arc sleeves 26 are symmetrically arranged on both sides of the vertical rod 23 , the arc rod 27 is slidably mounted on the arc sleeves 26 , the elastic support member 28 is disposed in the arc sleeves 26 , and the ends of the elastic support member 28 are connected to the arc rod 27 .

[0068] During the specific implementation of this embodiment, a pair of magnetic poles with opposite magnetic properties are installed inside the free ends of the swing plate 1 24 and the swing plate 2 25 in the present application, and when the swing plate 1 24 and the swing plate 2 25 are attached to each other, the positions of the swing plate 1 24 and the swing plate 2 25 are fixed;

[0069] When the first drawer 2, the second drawer 3, the third drawer 4 or the fourth drawer 5 needs to be replaced, the swing plate 1 24 and the swing plate 25 are pushed toward the top, and the swing plate 1 24 and the swing plate 25 also pull the arc rod 27 to slide along the arc sleeve 26. During this process, the elastic support member 28 is elastically deformed by the force, and after the replacement of the components inside the first drawer 2, the second drawer 3, the third drawer 4 and the fourth drawer 5 is completed, the elastic support member 28 pulls the swing plate 1 24 and the swing plate 25 to swing along the top of the vertical rod 23, and the swing plate 1 24 and the swing plate 25 swing back to the initial position to cover the low-voltage cabinet body 1 and the exhaust hole 22, which can play the role of shielding from rain and dust.

[0070] To sum up, when it is necessary to replace the internal components of the first drawer 2, the second drawer 3, the third drawer 4 and the fourth drawer 5, the swing plate 1 24 and the swing plate 25 are swung in opposite directions, and the swing plate 1 24 and the swing plate 25 also pull the arc rod 27 to slide along the arc sleeve 26, and the elastic support member 28 is stretched by force. The swing plate 1 24 and the swing plate 25 are fixed under the action of the magnetic pole, and the toggle frame 13 is rotated, and the longitudinal insertion rod 10 moves synchronously therewith, and when the external threaded portion 12 is separated from the low-voltage cabinet body 1, the longitudinal insertion rod 10 is moved along the limit hole 9 and the longitudinal slot 11 to The first drawer 2, the second drawer 3, the third drawer 4 and the fourth drawer 5 are pulled outward, thereby releasing the lock on the position of the first drawer 2, the second drawer 3, the third drawer 4 and the fourth drawer 5. The staff pulls the horizontal handle 6 at the corresponding position as needed to pull out the first drawer 2, the second drawer 3, the third drawer 4 and the fourth drawer 5 outward, and the limit bar 7 slides outward along the limit groove 8. After the replacement of the components inside the low-voltage cabinet is completed, the first drawer 2, the second drawer 3, the third drawer 4 and the fourth drawer 5 are put back into the low-voltage cabinet body 1, and the longitudinal plug rod 10 is plugged into the low-voltage cabinet body 1, completing the replacement of the first drawer 2, the second drawer 3, the third drawer 4 and the fourth drawer 5 is locked, the swing plate 1 24 and the swing plate 2 25 are moved back to their initial positions to cover the low-voltage cabinet body 1, and the internal components are working. The cooling device 17 works to inhale the external air and cool it down, and then enters the flow channel 19 along the air injection hole 18. The cooling gas flows along the flow channel 19. A part of the cooling gas passes through the spray hole 1 20 and is sprayed to the gap between the adjacent fixing rods 16 and falls on the surface of the component. Another part of the cooling gas also passes through the spray hole 21 and the air guide hole 2 15 along the flow channel 19 and is sprayed to the surface of the components in the first drawer 2, the second drawer 3, the third drawer 4 and the fourth drawer 5. In addition, the cooling gas flows upward. During movement, it also moves through the gap between multiple drawers and the inner wall of the low-voltage cabinet body 1, and carries the heat emitted by the internal components of the low-voltage cabinet during operation during the flow of cooling gas, and finally discharges it outward through the exhaust hole 22. The present application has the characteristics of high structural strength. The drawers are not easy to loosen and fall off when the low-voltage cabinet is tilted under force, and can better protect the internal components of the low-voltage cabinet. It also has the characteristics of large heat dissipation area and high heat dissipation efficiency. The cooling gas can cover the surface of the heating components inside the low-voltage cabinet during the flow, and promptly discharge the heat generated by the components, so as to provide a good working environment inside.

[0071] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0072] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A heat dissipation structure for a drawer-type low-voltage cabinet, including the low-voltage cabinet body, characterized in that, it further includes: Drawers, multiple drawers are provided, and the drawers are installed inside the low-voltage cabinet body along the height direction; A positioning and locking mechanism, which is arranged on the low-voltage cabinet body and the drawers, and is used to firmly install the multiple drawers inside the low-voltage cabinet body to prevent the drawers from falling off when stressed; A heat dissipation mechanism, a part of the heat dissipation mechanism is arranged inside the low-voltage cabinet body, and another part of the heat dissipation mechanism is arranged inside the drawers, and the two parts are communicated to facilitate air flow and heat dissipation; A shielding mechanism, which is symmetrically installed at the top of the low-voltage cabinet body and shields the low-voltage cabinet body in the unfolded state, and is also convenient for replacing the internal components of the drawers when folded; The drawers include a first drawer, a second drawer, a third drawer and a fourth drawer; Among them, the first drawer, the second drawer, the third drawer and the fourth drawer are arranged from bottom to top inside the low-voltage cabinet body; The heat dissipation mechanism includes a first air guide hole, a second air guide hole, a fixed rod and an exhaust hole; The first air guide holes are uniformly arranged at the bottoms of the first drawer, the second drawer, the third drawer and the fourth drawer; The second air guide holes are equidistantly installed on both sides of the first drawer, the second drawer, the third drawer and the fourth drawer; The fixed rods are installed inside the first drawer, the second drawer, the third drawer and the fourth drawer; The exhaust hole is arranged at the top of the low-voltage cabinet body to facilitate the outward discharge of gas when flowing inside the low-voltage cabinet body; The heat dissipation mechanism further includes a cooling device, an injection hole, a flow channel, a first spray hole and a second spray hole; The cooling device is installed outside the low-voltage cabinet body, and the injection hole, the flow channel, the first spray hole and the second spray hole are all arranged inside the low-voltage cabinet body, and the injection hole, the flow channel, the first spray hole and the second spray hole are communicated; Among them, the first spray hole is arranged corresponding to the gap between adjacent fixed rods, and the second spray hole is arranged corresponding to the second air guide hole, so as to facilitate the gas to move along the surface of the heating elements inside the low-voltage cabinet and carry the heat generated during their operation.

2. A heat dissipation structure for a drawer-type low-voltage cabinet according to claim 1, characterized in that, The adjacent first drawer, second drawer, third drawer and fourth drawer are in contact with each other to cooperate with the low-voltage cabinet body to form a closed space; Horizontal pull handles are fixedly installed on the outer surfaces of the first drawer, the second drawer, the third drawer and the fourth drawer, and are used to push the first drawer, the second drawer, the third drawer and the fourth drawer to slide along the low-voltage cabinet body.

3. A heat dissipation structure for a drawer-type low-voltage cabinet according to claim 2, characterized in that, The positioning and locking mechanism includes a limit strip, a limit groove, a limit hole, a longitudinal insertion rod and a longitudinal slot; The limit strips are symmetrically installed on both sides of the first drawer, the second drawer, the third drawer and the fourth drawer, the limit grooves are horizontally and longitudinally arranged inside the low-voltage cabinet body, and the limit grooves are slidably connected with the limit strips; The limit holes are arranged on the limit strips, the longitudinal slots are vertically arranged in the low-voltage cabinet body, and the longitudinal insertion rods are slidably installed in the limit holes and the longitudinal slots.

4. A heat dissipation structure for a drawer-type low-voltage cabinet according to claim 3, characterized in that, The positioning locking mechanism also includes an external threaded portion and a toggle frame; The external threaded portion is arranged at the top of the longitudinal insertion rod, and the external threaded portion is also threadedly connected to the connection hole arranged at the top of the low-voltage cabinet body; The toggle frame is fixedly installed on the top end of the longitudinal insertion rod. The toggle frame consists of a fixed plate and a toggle rod, and is used to lock the positions of the first drawer, the second drawer, the third drawer and the fourth drawer.

5. According to claim 1, a drawer-type low-voltage cabinet heat dissipation structure, It is characterized in that The shielding mechanism comprises a vertical rod, a first swing plate, a second swing plate, an arc sleeve, an arc rod and an elastic support member; The vertical rod is fixedly installed on the top of the low-voltage cabinet body, and the swing plate 1 and the swing plate 2 are hinged on the top of the vertical rod; The arc sleeves are symmetrically arranged on both sides of the vertical rod, the arc rod is slidably installed on the arc sleeves, the elastic support member is arranged in the arc sleeves, and the ends of the elastic support member are connected to the arc rod.

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