A multi-layer partition type low-voltage power distribution cabinet

Abstract

The application relates to the technical field of power equipment, in particular to a multi-layer partition type low-voltage power distribution cabinet, which comprises a cabinet body, a plurality of partitions and a plurality of heat dissipation modules. Corresponding heat dissipation modules are independently arranged for each layer through installation of chambers on the back of the cabinet body, installation grooves are formed on the installation back plates of the heat dissipation modules, a plurality of fan units can be slidably arranged in the installation grooves, and according to the preset heat generation of electrical elements in the installation chambers, a number of fan units proportional to the heat generation are assembled in the installation grooves, so that different heat generation chambers are configured with different numbers of heat dissipation fans. In this way, the chambers with large heat generation are configured with more fan units to enhance the heat dissipation capacity, and the chambers with small heat generation are configured with fewer fan units to avoid excessive ventilation, the heat dissipation resources are accurately configured on demand, and the heat balance and operation reliability of the whole cabinet are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, and in particular to a multi-layer partitioned low-voltage distribution cabinet. Background Technology

[0002] Low-voltage switchgear is an important piece of equipment in power systems used for distributing electrical energy, controlling, protecting, and monitoring circuits. It is widely used in industrial and mining enterprises, residential buildings, and public facilities. Internally, it typically integrates various electrical components such as circuit breakers, contactors, relays, and busbars, and its rational structural layout ensures the safety and reliability of power supply.

[0003] To optimize internal space utilization and reduce mutual interference between different functional units, various multi-layer partitioned low-voltage distribution cabinets have emerged in the prior art. These cabinets typically use multiple vertical partitions to divide the interior into independent installation chambers. For example, incoming line units, feeder units, and capacitor compensation units are placed on different layers, with each layer physically isolated by metal partitions. Some designs also incorporate ventilation louvers or independent fans on the cabinet doors of each chamber to achieve targeted heat dissipation for electrical components in each area.

[0004] However, in actual use, existing multi-layer partitioned low-voltage distribution cabinets often use the same specifications of heat dissipation openings or the same number of fans in each layer of the installation chamber, resulting in insufficient heat dissipation in some chambers and redundant heat dissipation in others. This makes it difficult to achieve precise heat dissipation as needed, affecting the thermal balance and operational reliability of the entire cabinet. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-layer partitioned low-voltage distribution cabinet, which aims to solve the technical problem that existing multi-layer partitioned low-voltage distribution cabinets often use the same specifications of heat dissipation openings or the same number of fans in actual use, resulting in insufficient heat dissipation in some chambers and redundant heat dissipation in others, making it difficult to achieve precise heat dissipation as needed, thus affecting the thermal balance and operational reliability of the entire cabinet.

[0006] To achieve the above objectives, the present invention provides a multi-layer partitioned low-voltage distribution cabinet, including a cabinet body, multiple partitions and multiple heat dissipation modules. The multiple partitions are horizontally arranged inside the cabinet body, and the multiple partitions divide the interior of the cabinet body into multiple independent installation chambers from top to bottom. The back of the cabinet body is provided with multiple heat dissipation modules, and each heat dissipation module corresponds to one of the installation chambers. Each heat dissipation module includes a mounting backplate, multiple fan units, and two end fixing plates. The mounting backplate is fixedly installed on the back of the corresponding mounting chamber. The mounting backplate has a mounting groove along its length. The multiple fan units are slidably disposed in the mounting groove and are arranged sequentially along the length of the mounting groove. The two end fixing plates are detachably fixed to both ends of the mounting backplate and clamp the multiple fan units in the mounting groove from both ends. The number of fan units is proportional to the preset heat generation of the corresponding electrical components inside the mounting chamber.

[0007] Each fan unit includes a sliding plate, a mounting protrusion, a cooling fan, and a dust filter. The sliding plate is slidably disposed inside the mounting groove, and a heat dissipation hole is provided through the sliding plate. The mounting protrusion is provided on the side of the sliding plate away from the cabinet, and the mounting protrusion is located outside the heat dissipation hole. The cooling fan is provided at the end of the mounting protrusion away from the sliding plate, and the dust filter is also inserted on the mounting protrusion, with the dust filter located between the cooling fan and the heat dissipation hole.

[0008] Each of the fan units further includes a protective cover, which is detachably connected to the mounting protrusion and located outside the corresponding cooling fan.

[0009] Each of the dust filters is provided with a disassembly handle on its outer side wall, and the disassembly handle extends to the outside of the corresponding mounting protrusion.

[0010] The cabinet is also equipped with multiple ventilation louvers on its side, each ventilation louver corresponding to one of the installation chambers.

[0011] Each of the sliding plates includes a plate body and two sliding blocks. Sliding grooves are provided on both sides of the mounting groove. An opening is provided in the middle of each sliding groove. Sliding blocks are provided at both the upper and lower ends of the plate body. Each sliding block is adapted to one of the sliding grooves.

[0012] Each of the end fixing plates is provided with a fixing wing plate and an abutment plate at both ends. The fixing wing plate is detachably connected to the end wall of the mounting groove, and the abutment plate abuts against the outer side wall of the corresponding sliding plate.

[0013] The multi-layer partitioned low-voltage distribution cabinet also includes multiple locking pins, and each dust filter is fixed to the corresponding mounting protrusion by the locking pin.

[0014] Each of the mounting protrusions is further provided with a lifting spring inside, and a lifting plate is fixedly provided at the end of each lifting spring away from the inner wall of the corresponding mounting protrusion. The lifting plate corresponds to the dust filter.

[0015] This invention discloses a multi-layer partitioned low-voltage distribution cabinet, comprising a cabinet body, multiple partitions, and multiple heat dissipation modules. By independently setting a corresponding heat dissipation module for each mounting chamber on the back of the cabinet body, and creating mounting slots on the mounting back plates of the heat dissipation modules, multiple fan units can be slidably disposed within these slots. Simultaneously, based on the preset heat generation of the electrical components inside each mounting chamber, a number of fan units proportional to the heat generation are assembled within the mounting slots. This allows for different numbers of cooling fans to be configured for chambers with different heat generation. Thus, chambers with higher heat generation are configured with more fan units to enhance heat dissipation capacity, while chambers with lower heat generation are configured with fewer fan units to avoid over-ventilation. This achieves precise configuration of heat dissipation resources as needed, significantly improving the overall thermal balance and operational reliability of the cabinet. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the multi-layer partitioned low-voltage distribution cabinet according to the first embodiment of the present invention.

[0018] Figure 2 This invention provides Figure 1 A structural diagram from another perspective.

[0019] Figure 3 This invention provides Figure 2 A magnified view of the local structure at point A.

[0020] Figure 4 This is a partial structural diagram of the heat dissipation module in the first embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the fan unit in the second embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of a partially disassembled fan unit in the second embodiment of the present invention.

[0023] 101-Cabinet body, 102-Partition, 103-Mounting back panel, 104-End fixing plate, 105-Mounting protrusion, 106-Cooling fan, 107-Dust filter, 108-Protective cover, 109-Panel body, 110-Sliding block, 111-Mounting chamber, 112-Mounting groove, 113-Heat dissipation hole, 114-Removal handle, 115-Ventilation louver, 116-Sliding groove, 117-Opening, 118-Fixed wing plate, 119-Abutment plate, 201-Locking pin, 202-Lifting spring, 203-Lifting plate. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] First embodiment: Please see Figures 1 to 4 ,in Figure 1 This is a structural schematic diagram of the multi-layer partitioned low-voltage distribution cabinet of the first embodiment. Figure 2 yes Figure 1 Another structural diagram from the perspective of Figure 3 yes Figure 2 A magnified view of the local structure at point A. Figure 4 This is a partial structural diagram of the heat dissipation module in the first embodiment.

[0026] This invention provides a multi-layer partitioned low-voltage distribution cabinet, comprising a cabinet body 101, multiple partitions 102, and multiple heat dissipation modules. Each heat dissipation module includes a mounting back plate 103, multiple fan units, and two end fixing plates 104. Each fan unit includes a sliding plate, a mounting protrusion 105, a cooling fan 106, a dust filter 107, and a protective cover 108. Each sliding plate includes a plate body 109 and two sliding blocks 110. This solution addresses the technical problem in existing multi-layer partitioned low-voltage distribution cabinets where, in practical use, each mounting chamber 111 often uses the same specifications of heat dissipation openings or the same number of fans, resulting in insufficient heat dissipation in some chambers and redundant heat dissipation in others. This makes it difficult to achieve precise heat dissipation as needed, affecting the overall thermal balance and operational reliability of the cabinet. It is understood that the aforementioned solution can be applied to the structure of multi-layer partitioned low-voltage distribution cabinets.

[0027] In this specific embodiment, multiple partitions 102 are horizontally arranged inside the cabinet 101, dividing the interior of the cabinet 101 into multiple independent installation chambers 111 from top to bottom. The mounting back plate 103 is fixedly installed on the back of the corresponding installation chamber 111. The mounting back plate 103 has a mounting groove 112 along its length direction. Multiple fan units are slidably arranged in the mounting groove 112, and the multiple fan units are arranged sequentially along the length direction of the mounting groove 112. Two end fixing plates 104 are detachably fixed to both ends of the mounting back plate 103, and the two end fixing plates 104 clamp and fix the multiple fan units in the mounting groove 112 from both ends. The number of fan units is proportional to the preset heat generation of the electrical components inside the corresponding mounting chamber 111.

[0028] In this embodiment, by independently installing the mounting backplate 103 on the back of each mounting chamber 111, and configuring a corresponding number of fan units on the mounting backplate 103 according to the preset heat generation of the chamber, differentiated and targeted heat dissipation for different mounting chambers 111 is achieved. This effectively avoids the problems of insufficient heat dissipation in chambers with heat accumulation and redundant heat dissipation in low-heat chambers caused by the traditional uniform heat dissipation structure, significantly improving the thermal balance and operational reliability of the entire cabinet. At the same time, the fan units are slidably disposed in the mounting groove 112 and clamped and fixed by the end fixing plates 104 at both ends, eliminating the need for tightening each screw individually, greatly simplifying assembly and maintenance operations and shortening equipment maintenance time.

[0029] The sliding plate is slidably disposed inside the mounting groove 112. A heat dissipation hole 113 is provided through the sliding plate. A mounting protrusion 105 is provided on the side of the sliding plate away from the cabinet 101. The mounting protrusion 105 is disposed outside the heat dissipation hole 113. A cooling fan 106 is provided at the end of the mounting protrusion 105 away from the sliding plate. A dust filter 107 is also inserted into the mounting protrusion 105. The dust filter 107 is located between the cooling fan 106 and the heat dissipation hole 113.

[0030] In this embodiment, when the cooling fan 106 is running, it blows ambient air into the mounting chamber 111 through the heat dissipation holes 113, accelerating the airflow exchange between the ambient air and the hot air inside the chamber, thereby removing the heat accumulated on the surface of the electrical components and inside the chamber. The dust filter 107 is located on the air outlet side of the cooling fan 106, which can effectively intercept dust particles carried in the airflow before the ambient air enters the chamber, preventing dust from being blown directly into the chamber and adhering to the surface of the electrical components, thereby ensuring the insulation performance and service life of the electrical components.

[0031] Secondly, the protective cover is detachably connected to the mounting protrusion 105 and is located outside the corresponding cooling fan 106.

[0032] In this embodiment, the protective cover completely encloses the cooling fan 106 inside the mounting protrusion 105, which can effectively prevent external cables, tools or operators' fingers from accidentally touching the high-speed rotating fan blades, thus avoiding equipment damage and personal safety accidents.

[0033] Meanwhile, each of the dust filters 107 is provided with a disassembly handle 114 on its outer side wall, and the disassembly handle 114 extends to the outside of the corresponding mounting protrusion 105.

[0034] In this embodiment, the dust filter 107 is easily disassembled and assembled by the disassembly handle 114.

[0035] In addition, the side of the cabinet 101 is provided with a plurality of ventilation louvers 115, each of the ventilation louvers 115 corresponding to one of the installation chambers 111.

[0036] In this embodiment, when the cooling fan 106 is running, it blows ambient air into the mounting chamber 111 through the heat dissipation hole 113. The hot air is discharged to the outside of the cabinet 101 through the ventilation louvers 115 on the side of the cabinet 101. Thus, a directional heat dissipation airflow channel is formed inside each independent mounting chamber 111. Ambient air is continuously blown into the chamber, constantly carrying the heat on the surface of the electrical components to the ventilation louvers 115 on the side for discharge, thus avoiding the circulation and stagnation of hot air inside the chamber.

[0037] Furthermore, sliding grooves 116 are provided on both sides of the mounting groove 112, and an opening 117 is provided in the middle of each sliding groove 116. Sliding blocks 110 are provided at both the upper and lower ends of the plate 109, and each sliding block 110 is adapted to one sliding groove 116.

[0038] In this embodiment, the opening 117 in the middle of the sliding groove 116 provides a channel for the insertion and removal of the sliding block 110. Through the cooperation between the sliding block 110 and the sliding groove 116, the sliding plate is constrained in the mounting groove 112 to a single degree of freedom movement that slides only along the length direction, ensuring the straightness and positional accuracy of each fan unit when arranged in the mounting groove 112.

[0039] Furthermore, each of the end fixing plates 104 is provided with a fixing wing plate 118 and an abutment plate 119 at both ends. The fixing wing plate 118 is detachably connected to the end wall of the mounting groove 112, and the abutment plate 119 abuts against the outer side wall of the corresponding sliding plate.

[0040] In this embodiment, after the end fixing plate 104 is fixed to the end wall of the mounting groove 112 by the fixing wing plate 118, the abutment plate 119 abuts tightly against the outermost outer wall of the sliding plate from the end, thereby pressing and fixing all the fan units clamped between the two end fixing plates 104 along the length direction of the mounting groove 112, effectively preventing the fan units from moving or shifting in the mounting groove 112 due to vibration during transportation or operation.

[0041] When using a multi-layer partitioned low-voltage distribution cabinet according to this embodiment, firstly, based on the type and quantity of electrical components integrated inside the mounting chamber 111, calculate or query the preset heat generation parameters to determine the number of fan units required for each mounting chamber 111; then, slide the corresponding number of fan units sequentially into the mounting groove 112 of the mounting back plate 103 outside the cabinet 101, and fix the end fixing plate 104 to clamp all the fan units, completing the pre-assembly of each heat dissipation module; next, fix the heat dissipation modules respectively at the positions on the back of the cabinet 101 corresponding to the mounting chamber 111. The power cord of the cooling fan 106 is connected to the power supply circuit inside the cabinet 101. When the equipment is running, the cooling fan 106 of the installation chamber 111 starts and stops independently according to the temperature threshold inside the chamber. During operation, the ambient air outside the cabinet 101 is forced into the corresponding installation chamber 111 by each cooling fan 106. The ambient air comes into full contact with the surface of the electrical components and carries away the heat. The heated air is discharged to the outside of the cabinet 101 through the ventilation louvers 115 on the side of the cabinet 101, forming a forced convection heat dissipation path to achieve precise heat dissipation of the installation chamber 111 as needed.

[0042] Second embodiment: Based on the first embodiment, please refer to Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of the fan unit in the second embodiment. Figure 6 This is a schematic diagram of the partially disassembled structure of the fan unit in the second embodiment.

[0043] The present invention provides a multi-layer partitioned low-voltage distribution cabinet, which also includes multiple locking pins 201.

[0044] In this specific embodiment, each of the dust filters 107 is fixed to the corresponding mounting protrusion 105 by the locking pin 201.

[0045] In this embodiment, the dust filter 107 is detachably fixed inside the mounting protrusion 105 by the locking pin 201, so that the dust filter 107 is more securely installed inside the mounting protrusion 105.

[0046] Each of the mounting protrusions 105 is further provided with a lifting spring 202 inside, and a lifting plate 203 is fixedly provided at the end of each lifting spring 202 away from the inner wall of the corresponding mounting protrusion 105. The lifting plate 203 corresponds to the dust filter 107.

[0047] In this embodiment, when the operator pulls out the locking pin 201 to release the lock on the dust filter 107, the lifting spring 202 automatically releases its elastic force, pushing the lifting plate 203 to push the dust filter 107 outward a certain distance, so that the operator can take the dust filter 107 out of the mounting protrusion 105.

[0048] When using a multi-layer partitioned low-voltage distribution cabinet according to this embodiment, the dust filter 107 is detachably fixed inside the mounting protrusion 105 by the locking pin 201, so that the dust filter 107 is more firmly installed inside the mounting protrusion 105. When the operator pulls out the locking pin 201 to release the locking of the dust filter 107, the lifting spring 202 automatically releases its elastic force, pushing the lifting plate 203 to push the dust filter 107 outward a certain distance, making it easier for the operator to remove the dust filter 107 from inside the mounting protrusion 105.

[0049] The above description discloses only one preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Those skilled in the art will understand that all or part of the processes of the above embodiments can be implemented, and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A multi-layer partitioned low-voltage distribution cabinet, comprising a cabinet body and multiple partitions, wherein the multiple partitions are horizontally arranged inside the cabinet body, and the multiple partitions divide the interior of the cabinet body into multiple independent installation chambers from top to bottom, characterized in that, It also includes multiple heat dissipation modules, with multiple heat dissipation modules provided on the back of the cabinet, and each heat dissipation module corresponding to one of the mounting chambers; Each heat dissipation module includes a mounting backplate, multiple fan units, and two end fixing plates. The mounting backplate is fixedly installed on the back of the corresponding mounting chamber. The mounting backplate has a mounting groove along its length. The multiple fan units are slidably disposed in the mounting groove and are arranged sequentially along the length of the mounting groove. The two end fixing plates are detachably fixed to both ends of the mounting backplate and clamp the multiple fan units in the mounting groove from both ends. The number of fan units is proportional to the preset heat generation of the corresponding electrical components inside the mounting chamber.

2. The multi-layer partitioned low-voltage distribution cabinet as described in claim 1, characterized in that, Each fan unit includes a sliding plate, a mounting protrusion, a cooling fan, and a dust filter. The sliding plate is slidably disposed inside the mounting groove, and a heat dissipation hole is provided through the sliding plate. The mounting protrusion is provided on the side of the sliding plate away from the cabinet, and the mounting protrusion is located outside the heat dissipation hole. The cooling fan is provided at the end of the mounting protrusion away from the sliding plate, and the dust filter is also inserted into the mounting protrusion, with the dust filter located between the cooling fan and the heat dissipation hole.

3. The multi-layer zoned low-voltage distribution cabinet as described in claim 2, characterized in that, Each of the fan units also includes a protective cover, which is detachably connected to the mounting protrusion and located outside the corresponding cooling fan.

4. The multi-layer partitioned low-voltage distribution cabinet as described in claim 3, characterized in that, Each of the dust filters is provided with a removal handle on its outer side wall, the removal handle extending to the outside of the corresponding mounting protrusion.

5. The multi-layer partitioned low-voltage distribution cabinet as described in claim 1, characterized in that, The side of the cabinet is also provided with multiple ventilation louvers, each of which corresponds to one of the installation chambers.

6. The multi-layer partitioned low-voltage distribution cabinet as described in claim 2, characterized in that, Each of the sliding plates includes a plate body and two sliding blocks. Sliding grooves are provided on both sides of the mounting groove. An opening is provided in the middle of each sliding groove. Sliding blocks are provided at both the upper and lower ends of the plate body. Each sliding block is adapted to one of the sliding grooves.

7. The multi-layer partitioned low-voltage distribution cabinet as described in claim 6, characterized in that, Each end fixing plate is provided with a fixing wing plate and an abutment plate at both ends. The fixing wing plate is detachably connected to the end wall of the mounting groove, and the abutment plate abuts against the outer side wall of the corresponding sliding plate.

8. The multi-layer partitioned low-voltage distribution cabinet as described in claim 1, characterized in that, The multi-layer partitioned low-voltage distribution cabinet also includes multiple locking pins, and each of the dust filters is fixed to the corresponding mounting protrusion by the locking pin.

9. The multi-layer partitioned low-voltage distribution cabinet as described in claim 8, characterized in that, Each of the mounting protrusions is further provided with a lifting spring inside, and a lifting plate is fixedly provided at the end of each lifting spring away from the inner wall of the corresponding mounting protrusion. The lifting plate corresponds to the dust filter.

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