Contact heat dissipation device of distribution box

Abstract

The utility model relates to the technical field of distribution boxes, and discloses a contact heat dissipation device of a distribution box, which comprises a distribution box body, the front side of the distribution box body is rotatably connected with a cabinet door, and the inner side of the cabinet door is provided with a heat dissipation assembly for heat dissipation of the distribution box body. The three inner air holes are formed in the outer wall of the inner air duct in the staggered mode, when the inner air duct rotates, the three inner air holes can be driven to correspond to the outer air holes respectively, airflow is input into the inner air duct through the miniature air blower, and therefore when each inner air duct outputs the airflow, the airflow in the inner air duct can be exhausted to the air outlet hole from the position of the single inner air hole every time; and finally, the air flow is exhausted into the distribution box body, so that the situation that the heat dissipation effect on elements in the distribution box body is insufficient due to the fact that the air flow exhausted by the inner air holes far away from the air source is small due to the fact that the multiple inner air holes exhaust the air flow at the same time is avoided, and uniform heat dissipation of the elements in the distribution box body is achieved by intermittently exhausting the air flow through the three inner air holes in the inner air duct. And the heat dissipation effect is ensured.

Description

Technical Field

[0001] This utility model relates to the field of distribution box technology, and in particular to a contact heat dissipation device for a distribution box. Background Technology

[0002] Distribution boxes typically require the assembly of switching equipment, measuring instruments, protective electrical appliances, and auxiliary equipment within enclosed or semi-enclosed metal cabinets or panels, forming a low-voltage distribution box. They are characterized by their small size, easy installation, unique technical performance, fixed location, unique configuration functions, lack of site restrictions, widespread application, stable and reliable operation, high space utilization, small footprint, and environmental benefits. During normal operation, circuits can be connected or disconnected manually or automatically. Therefore, they generate a significant amount of heat when conducting electricity, requiring proper heat dissipation to avoid safety hazards.

[0003] An existing contact heat dissipation device for a distribution box (publication number: CN222673722U) has at least the following drawbacks: This device installs a fan plate on the cabinet door and sets multiple air outlets on the fan plate corresponding to the heat-generating elements of the distribution cabinet. Airflow is input to the fan plate by a blower, so that all the air outlets simultaneously output airflow to dissipate heat from the heat-generating elements. However, since the air outlets on the fan plate are evenly distributed along the surface of the fan plate, many air outlets inevitably end up far from the air source input end of the blower. This results in a smaller airflow when air is input to the air outlet at that location compared to the air outlets closer to the air source input end. Consequently, the heat dissipation effect of the air outlet at that location on the corresponding heat-generating element is reduced, affecting the uniform heat dissipation of the heat-generating elements in the distribution cabinet. Therefore, this utility model is proposed. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a contact heat dissipation device for a distribution box.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A contact heat dissipation device for a distribution box includes a distribution box body. A cabinet door is rotatably connected to the front side of the distribution box body. A heat dissipation component for dissipating heat from the distribution box body is provided on the inner side of the cabinet door. The heat dissipation component includes three connecting seats fixed vertically along the inner side of the cabinet door. Three exhaust ducts are connected and fixed to one side of the connecting seats. An inner duct is rotatably connected to the inside of the exhaust duct. Three external air holes are opened axially on one side of the outer wall of the exhaust duct. Three internal air holes are opened on the outer wall of the inner duct. The three internal air holes are staggered along the outer wall of the inner duct. Air outlets are opened on both the left and right sides of the distribution box body near the bottom.

[0007] As a further embodiment of this utility model, three miniature blowers are fixed vertically on the outer side of the cabinet door. A connecting pipe is fixed at the air outlet of the miniature blowers. One end of the connecting pipe passes through the outer side of the cabinet door and is connected to and fixed to the side of the connecting seat away from the exhaust pipe.

[0008] As a further embodiment of this utility model, a micro geared motor is fixed on the inner side of the cabinet door, and a synchronous pulley is fixed on both the end of the inner air duct away from the connecting seat and the output shaft end of the micro geared motor. Several synchronous pulleys are linked together by a synchronous belt.

[0009] As a further embodiment of this utility model, a protective cover is provided on the inner side of the cabinet door, and the end of the inner air duct away from the connecting seat and the output shaft end of the micro geared motor are rotatably connected to one side of the protective cover, with the synchronous pulley located inside the protective cover.

[0010] As a further embodiment of this utility model, the protective cover is rotatably connected to the front and rear sides of the interior, and several abutment rollers roll and abut against the outer walls of several synchronous wheels respectively.

[0011] As a further embodiment of this utility model, a protective grille is fixed at the air outlet, and a protective shell is fixed on the outside of the distribution box body at the location of the miniature blower. A protective net is also fixed on the outside of the protective shell.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By installing an exhaust duct and an inner duct on the inside of the cabinet door, and staggering three inner air holes on the outer wall of the inner duct, the rotation of the inner duct drives the three inner air holes to correspond with the outer air holes. A miniature blower inputs airflow into the inner duct, so that when each inner duct outputs airflow, the airflow inside the inner duct will only be discharged from a single inner air hole to the exhaust hole at a time, and finally discharged into the interior of the distribution box body. This avoids the situation where multiple inner air holes discharge airflow at the same time, resulting in a small airflow from the inner air holes far from the air source, which would lead to insufficient heat dissipation for the components inside the distribution box body. The intermittent discharge of airflow through the three inner air holes on the inner duct achieves uniform heat dissipation for the components inside the distribution box body, ensuring the heat dissipation effect. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a contact heat dissipation device for a distribution box proposed in this utility model;

[0015] Figure 2 This is a three-dimensional disassembled structural diagram of a contact heat dissipation device for a distribution box proposed in this utility model;

[0016] Figure 3This is a three-dimensional structural diagram of the inner air duct of a contact heat dissipation device for a distribution box proposed in this utility model.

[0017] Figure 4 This is a three-dimensional cross-sectional view of the protective cover of the contact heat dissipation device for a distribution box proposed in this utility model.

[0018] In the diagram: 1. Distribution box body; 101. Cabinet door; 2. Connecting seat; 201. Exhaust duct; 202. Inner duct; 203. Outer vent; 204. Inner vent; 205. Air outlet; 206. Miniature blower; 207. Connecting pipe; 3. Synchronous pulley; 301. Miniature geared motor; 4. Protective cover; 5. Abutting roller; 6. Protective grille; 601. Protective shell. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figures 1-4As shown, a contact heat dissipation device for a distribution box includes a distribution box body 1. A cabinet door 101 is rotatably connected to the front side of the distribution box body 1. A heat dissipation component for dissipating heat from the distribution box body 1 is provided on the inner side of the cabinet door 101. The heat dissipation component includes three connecting seats 2 vertically fixed along the inner side of the cabinet door 101. Three exhaust ducts 201 are connected and fixed to one side of the connecting seats 2. An inner air duct 202 is rotatably connected inside the exhaust duct 201. Three external air holes 203 are opened axially on one side of the outer wall of the exhaust duct 201. Three internal air holes 204 are opened on the outer wall of the inner air duct 202. The three internal air holes 204 are staggered along the outer wall of the inner air duct 202. Air outlet holes 205 are opened on both the left and right sides of the distribution box body 1 near the bottom.

[0023] like Figures 2-4 As shown, in this embodiment, three miniature blowers 206 are vertically fixed on the outer side of the cabinet door 101. A connecting pipe 207 is fixed at the air outlet of the miniature blower 206. One end of the connecting pipe 207 passes through the outer side of the cabinet door 101 and is connected and fixed to the side of the connecting seat 2 away from the exhaust duct 201. By driving several inner air ducts 202 to rotate synchronously, and since three inner air holes 204 are offset on the outer wall of the inner air duct 202, when the inner air duct 202 rotates, the three inner air holes 204 can be driven to correspond to the outer air holes 203 respectively. At this time, the miniature blowers 206 are started and connected to the connecting pipe 207. 7 and the connecting seat 2 discharge air into the interior of the inner air duct 202. At this time, due to the rotation of the inner air duct 202, the air entering the inner air duct 202 will only be discharged from a single inner air hole 204 to the air outlet 205 each time, and finally discharged into the interior of the distribution box body 1. This avoids the simultaneous discharge of air from multiple inner air holes 204, which would result in a small air flow rate from the inner air holes 204 far from the air source, resulting in insufficient heat dissipation effect on the components inside the distribution box body 1. The intermittent discharge of air from the three inner air holes 204 on the inner air duct 202 achieves uniform heat dissipation of the components inside the distribution box body 1, ensuring the heat dissipation effect.

[0024] like Figures 2-4 As shown, in this embodiment, a micro geared motor 301 is fixed on the inner side of the cabinet door 101. The end of the inner air duct 202 away from the connecting seat 2 and the output shaft end of the micro geared motor 301 are both fixed with synchronous pulleys 3. Several synchronous pulleys 3 are linked together by a synchronous belt. By starting the micro geared motor 301, the synchronous pulleys 3 are driven to rotate. Since the inner air duct 202 of the inner air duct 202 and the synchronous pulleys 3 of the micro geared motor 301 are linked by a synchronous belt, the micro geared motor 301 drives several inner air ducts 202 to rotate synchronously.

[0025] like Figures 2-4As shown, in this embodiment, a protective cover 4 is provided on the inner side of the cabinet door 101. The end of the inner air duct 202 away from the connecting seat 2 and the output shaft end of the micro reduction motor 301 are rotatably connected to one side of the protective cover 4. The synchronous pulley 3 is located inside the protective cover 4. By setting the protective cover 4, the synchronous pulley 3 and the synchronous belt can be protected.

[0026] like Figures 2-4 As shown in this embodiment, the protective cover 4 is rotatably connected to the front and rear sides of the inner side. Several abutting rollers 5 roll and abut against the outer sides of several synchronous pulleys 3 respectively. By setting the abutting rollers 5 to abut against the outer sides of the synchronous pulleys 3, the synchronous belt and the synchronous pulleys 3 can be perfectly engaged, ensuring that the wrap angle between the synchronous belt and the synchronous pulleys 3 meets the transmission requirements.

[0027] like Figures 2-4 As shown in this embodiment, a protective grille 6 is fixed at the air outlet 205, and a protective shell 601 is fixed on the outside of the power distribution box body 1 at the micro blower 206. A protective net is also fixed on the outside of the protective shell 601. By setting the protective grille 6 and the protective shell 601, the air outlet 205 and the micro blower 206 can be protected.

[0028] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: In use, when it is necessary to dissipate heat from the internal components of the distribution box body 1, the micro geared motor 301 is started to drive the synchronous pulley 3 to rotate. Since the inner air duct 202 of the inner air duct 202 and the synchronous pulley 3 of the micro geared motor 301 are linked by a synchronous belt, the micro geared motor 301 drives several inner air ducts 202 to rotate synchronously. Since the outer wall of the inner air duct 202 is provided with three internal air holes 204 offset, when the inner air duct 202 rotates, it can drive the three internal air holes 204 to correspond to the external air holes 203 respectively. At this time, the micro blower 206 is started to discharge airflow into the interior of the inner air duct 202 through the connecting pipe 207 and the connecting seat 2. At this time, due to the rotation of the inner air duct 202, the airflow entering the inner air duct 202 is only... The air will be discharged from a single internal air hole 204 to the air outlet 205, and finally discharged into the interior of the distribution box body 1. This avoids the simultaneous discharge of air from multiple internal air holes 204, which would result in a small air flow rate from the internal air holes 204 far from the air source, leading to insufficient heat dissipation for the components inside the distribution box body 1. The intermittent discharge of air from the three internal air holes 204 on the internal air duct 202 achieves uniform heat dissipation for the components inside the distribution box body 1, ensuring the heat dissipation effect. The protective cover 4 can protect the synchronous pulley 3 and the synchronous belt. The abutting rollers 5 abut against both sides of the outer wall of the synchronous pulley 3, which can abut against the synchronous belt and the synchronous pulley 3 to ensure perfect meshing and that the wrap angle of the synchronous belt and the synchronous pulley 3 meets the transmission requirements. The protective grille 6 and the protective shell 601 can protect the air outlet 205 and the miniature blower 206.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A contact heat dissipation device for a distribution box, comprising a distribution box body (1), characterized in that, The front side of the distribution box body (1) is rotatably connected to a cabinet door (101). The inside of the cabinet door (101) is provided with a heat dissipation component for heat dissipation of the distribution box body (1). The heat dissipation component includes three connecting seats (2) fixed vertically along the inside of the cabinet door (101). Three exhaust ducts (201) are connected and fixed on one side of the connecting seat (2). An inner air duct (202) is rotatably connected inside the exhaust duct (201). Three external air holes (203) are opened along the axial direction on one side of the outer wall of the exhaust duct (201). Three internal air holes (204) are opened on the outer wall of the inner air duct (202). The three internal air holes (204) are staggered along the outer wall of the inner air duct (202). Air outlet holes (205) are opened on both the left and right sides of the distribution box body (1) and near the bottom.

2. The contact heat dissipation device for a distribution box according to claim 1, characterized in that, Three miniature blowers (206) are fixed vertically on the outside of the cabinet door (101). A connecting pipe (207) is fixed at the air outlet of the miniature blower (206). One end of the connecting pipe (207) passes through the outside of the cabinet door (101) and is connected and fixed to the side of the connecting seat (2) away from the exhaust pipe (201).

3. The contact heat dissipation device for a distribution box according to claim 2, characterized in that, A micro geared motor (301) is fixed on the inside of the cabinet door (101). The end of the inner air duct (202) away from the connecting seat (2) and the output shaft end of the micro geared motor (301) are both fixed with synchronous pulleys (3). Several synchronous pulleys (3) are linked together by synchronous belts.

4. The contact heat dissipation device for a distribution box according to claim 3, characterized in that, The cabinet door (101) is provided with a protective cover (4) on the inside. The end of the inner air duct (202) away from the connecting seat (2) and the output shaft end of the micro geared motor (301) are rotatably connected to one side of the protective cover (4). The synchronous wheel (3) is located inside the protective cover (4).

5. A contact heat dissipation device for a distribution box according to claim 4, characterized in that, The protective cover (4) has rotatably connected abutment rollers (5) near the front and rear sides inside. Several abutment rollers (5) roll and abut against the outer walls of several synchronous wheels (3) respectively.

6. The contact heat dissipation device for a distribution box according to claim 5, characterized in that, A protective grille (6) is fixed at the air outlet (205), and a protective shell (601) is fixed on the outside of the power distribution box body (1) at the micro blower (206). A protective net is also fixed on the outside of the protective shell (601).

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