Sealed electric control box

Abstract

The utility model belongs to the technical field of electric control boxes, and discloses a sealed electric control box, which comprises an electric control box shell, a capacitor and a first fan, and is characterized in that the electric control box shell is provided with a sealed accommodating cavity; the capacitor is positioned in the sealed accommodating cavity; the first fan is arranged in the sealed containing cavity, the air outlet side of the first fan faces the capacitor, and the first fan can blow air in the sealed electric cabinet. By arranging the sealed accommodating cavity in the electric cabinet shell, the effect of isolating water vapor and dust in the external environment is achieved. The first fan in the sealed cavity blows air in the sealed electric control box to flow, and the flow of the air brings heat generated during operation of the capacitor to a low-temperature area in the sealed electric control box, so that mutual circulation of cold and hot air in the sealed electric control box is realized, and the effect of reducing the temperature of the capacitor is achieved; the effect of reducing the internal temperature of the sealed electric control box is achieved, normal operation of the capacitor is further guaranteed, and safe operation of the sealed electric control box is further guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of electrical control box technology, and in particular to a sealed electrical control box. Background Technology

[0002] An electrical control box is a device that contains one or more low-voltage switchgear and related control, measurement, signaling, protection, and regulation equipment. It is typically assembled as a complete unit using structural components and is widely used in power supply systems for industrial equipment control, shopping malls, and offices. In terms of the market environment, the power industry is developing well, with broad future prospects. Currently, electrical control technology has gradually entered the stage of large-scale commercial application, and technologies in different application scenarios are experiencing accelerated growth. An electrical control box refers to electrical equipment used to control electrical equipment in power systems in fields such as industrial automation, public facilities, and intelligent buildings. Its important role is to control the switching, protection, and monitoring of electrical equipment to improve the safety, reliability, and efficiency of the power system. Electrical control boxes can achieve automatic control and monitoring of electrical equipment. Through program control within the controller, the electrical control box can complete the switching, protection, and monitoring of electrical equipment.

[0003] However, with the increasing demands on the performance of electrical control boxes in various application scenarios, the high-temperature problem has become increasingly prominent and has become one of the most common challenges. Especially when the ambient temperature rises, the internal temperature of the electrical control box will rise further due to the limited heat exchange in the enclosed space. This increase in internal temperature will directly shorten the lifespan of electronic components. Furthermore, with the continuous improvement of system-level packaging integration and the continuous increase in the heat dissipation and heat flux density of power devices, the heat dissipation of electronic devices is also constantly intensifying. Particularly under hot weather conditions, the excessively high internal temperature of the electrical control box makes it difficult for the electrical components inside the box to operate normally in a high-temperature environment, resulting in significantly increased losses and threatening the safe operation of the electrical control box. In the existing technology, ventilation holes are used to cool the electrical control box. However, the existence of ventilation holes allows moisture and dust from the external environment to enter the electrical control box, affecting the normal operation of the electrical components inside the box.

[0004] Therefore, there is an urgent need to propose a sealed electrical control box to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a sealed electrical control box that can be both waterproof and dustproof, and also cool down the inside of the electrical control box.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A sealed electrical control box, comprising:

[0008] The electrical control box housing has a sealed cavity.

[0009] A capacitor located inside a sealed cavity;

[0010] The first fan is located inside the sealed cavity, with its air outlet facing the capacitor. The first fan can blow air inside the sealed electrical control box.

[0011] Preferably, the number of first fans is at least two.

[0012] Preferably, the sealed electrical control box also includes an inductor and a chip, both of which are located inside the sealed cavity.

[0013] Preferably, the first fan is detachably connected to the inner wall of the sealed cavity.

[0014] Preferably, the first fan and the inner wall of the sealed cavity are connected by a first bolt.

[0015] Preferably, the electrical control box housing includes a housing and a cover, which are detachably and sealingly fastened together to form a sealed cavity.

[0016] Preferably, the housing and the cover are detachably connected by a second bolt.

[0017] Preferably, the sealed electrical control box also includes a heat sink, the control box housing is a heat-conducting element, the heat sink is installed on the outer wall of the control box housing, and the heat sink is thermally connected to the capacitor through the control box housing.

[0018] Preferably, the heat sink is installed on the outer wall of the electrical control box housing, directly opposite the capacitor;

[0019] And / or, the sealed electrical control box also includes a second fan, the exhaust side of which faces the radiator.

[0020] Preferably, the first fan is a turbulence fan.

[0021] The beneficial effects of this utility model are:

[0022] This utility model provides a sealed electrical control box, including a box housing, a capacitor, and a first fan. The box housing has a sealed cavity; the capacitor is located inside the sealed cavity; the first fan is located inside the sealed cavity, with its outlet facing the capacitor, and can blow air inside the sealed electrical control box. By setting a sealed cavity inside the box housing, moisture and dust from the external environment are isolated. The airflow generated by the first fan inside the sealed cavity carries the heat generated by the capacitor during operation to the cooler areas inside the sealed electrical control box, achieving mutual circulation of hot and cold air. This reduces the temperature of the capacitor and the overall temperature of the sealed electrical control box, ensuring the normal operation of the capacitor and the safe operation of the sealed electrical control box. Attached Figure Description

[0023] Figure 1 This is a front view of the sealed electrical control box structure provided by this utility model (excluding the cover);

[0024] Figure 2 This is a top view of the sealed electrical control box structure provided by this utility model;

[0025] Figure 3 This is a left view of the sealed electrical control box structure provided by this utility model.

[0026] In the picture:

[0027] 1. Electrical control box housing; 11. Housing; 12. Housing cover; 2. Capacitor; 3. First fan; 4. Heat sink; 5. Second fan. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between 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.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] This embodiment provides a sealed electrical control box that achieves both waterproof and dustproof properties, as well as cooling of the internal components of the electrical control box.

[0033] Specifically, such as Figures 1 to 3 As shown, a sealed electrical control box includes a box housing 1, a capacitor 2, and a first fan 3. The box housing 1 has a sealed cavity; the capacitor 2 is located inside the sealed cavity; the first fan 3 is disposed inside the sealed cavity, with its outlet facing the capacitor 2, and can blow air inside the sealed electrical control box. By setting a sealed cavity inside the box housing 1, the effect of isolating moisture and dust from the external environment is achieved. The airflow inside the sealed electrical control box by the first fan 3 carries the heat generated by the capacitor 2 during operation to the cooler areas inside the sealed electrical control box, realizing the mutual circulation of hot and cold air inside the sealed electrical control box, thereby reducing the temperature of the capacitor 2 and the internal temperature of the sealed electrical control box, thus ensuring the normal operation of the capacitor 2 and further ensuring the safe operation of the sealed electrical control box.

[0034] Furthermore, the number of first fans 3 is at least two. The operation of at least two first fans 3 enhances air circulation inside the sealed electrical control box, making the cooling effect on the heat generated by capacitor 2 more significant. In this embodiment, the number of first fans 3 is two; in other embodiments, the number of first fans 3 can be three, four, or five, etc.

[0035] Optionally, the sealed electrical control box also includes an inductor and a chip, both housed within the sealed cavity. Airflow carries the heat generated by the inductor and chip during operation to cooler areas inside the sealed electrical control box, achieving mutual circulation of hot and cold air. This reduces the temperature of the inductor and chip, ensuring their normal operation and, consequently, the safe operation of the sealed electrical control box. In other embodiments, a portion of the first fan 3's exhaust side faces the inductor, or a portion of the first fan 3's exhaust side faces the chip.

[0036] Optionally, the first fan 3 is detachably connected to the inner wall of the sealed cavity, so as to make the first fan 3 detachable from the electrical control box housing 1, which facilitates the maintenance and disassembly of the first fan 3.

[0037] Furthermore, the first fan 3 and the inner wall of the sealed cavity are connected by a first bolt, thereby connecting the first fan 3 relative to the electrical control box housing 1. In other embodiments, one of the first fan 3 and the inner wall of the sealed cavity is provided with a buckle, and the other is provided with a slot. The buckle and the slot engage to achieve a snap-fit ​​detachable connection between the first fan 3 and the electrical control box housing 1. Alternatively, the first fan 3 is provided with a first magnetic attraction component, and the inner wall of the sealed cavity is provided with a second magnetic attraction component. The magnetic attraction of the first magnetic attraction component and the second magnetic attraction component engages to achieve a magnetically detachable connection between the first fan 3 and the electrical control box housing 1.

[0038] Furthermore, the electrical control box housing 1 includes a housing 11 and a cover 12. The housing 11 and the cover 12 are detachably and sealingly connected so that the housing 11 and the cover 12 cooperate to form a sealed cavity. The detachability of the housing 11 and the cover 12 makes it easier to remove the first fan 3 from the sealed cavity after disassembly, making the maintenance of the first fan 3 more convenient.

[0039] Furthermore, the housing 11 and the cover 12 are detachably connected by a second bolt, making it easier to remove the sealed cavity after the first fan 3 is disassembled. In other embodiments, one of the housing 11 and the cover 12 is provided with a buckle, and the other is provided with a slot. The buckle and the slot engage to achieve a snap-fit ​​detachable connection between the housing 11 and the cover 12. Alternatively, the housing 11 is provided with a first magnetic attraction element, and the cover 12 is provided with a second magnetic attraction element. The magnetic attraction of the first and second magnetic attraction elements achieves a magnetic detachable connection between the housing 11 and the cover 12.

[0040] Optionally, the sealed electrical control box also includes a heat sink 4. The control box housing 1 is a heat-conducting element. For example, the control box housing 1 is made of a material with good thermal conductivity, such as iron or aluminum. The heat sink 4 is disposed on the outer wall of the control box housing 1. The heat sink 4 is thermally connected to the capacitor 2 through the control box housing 1. The heat generated by the capacitor 2 during operation is transferred to the heat sink 4 through the control box housing 1. The heat is then carried away by heat exchange between the air and the surface of the heat sink 4, thereby further reducing the heat of the capacitor 2. In this embodiment, the heat sink 4 is an air-cooled heat sink. In other embodiments, the heat sink 4 is a water-cooled heat sink or a heat pipe heat sink, etc.

[0041] Furthermore, the sealed electrical control box also includes a second fan 5, with the exhaust side of the second fan 5 facing the heat sink 4. The heat sink 4 is positioned directly opposite the capacitor 2 on the outer wall of the electrical control box housing 1. This close proximity allows the heat sink 4 to dissipate more heat, resulting in a better cooling effect. The second fan 5 circulates the air around the heat sink 4, further improving its heat dissipation effect and ensuring the stable operation of the capacitor 2. In other embodiments, the heat sink 4 is provided on the outer wall of the electrical control box housing 1, or the second fan 5 is provided on the outer wall of the electrical control box housing 1.

[0042] Optionally, the first fan 3 is a turbulence fan. A turbulence fan generates less heat during operation, thus avoiding the need for additional cooling for the first fan 3 and resulting in better cooling of the entire sealed electrical control box. In this embodiment, the turbulence fan is a low-voltage, low-power, single-phase, DC fan; in other embodiments, the turbulence fan is an AC fan.

[0043] Optionally, the sealed electrical control box also includes a controller, a temperature sensor, and a speed sensor. The first fan 3, the temperature sensor, and the speed sensor are all connected to the controller. The sensors can monitor the temperature of the first fan 3 motor or the surrounding environment. When the temperature exceeds the normal range, it indicates that the first fan 3 may have a fault such as poor heat dissipation, and the temperature signal will be fed back to the controller. The speed sensor monitors the speed of the first fan 3 in real time. Once the speed does not match the set value, such as too low or too high speed, the speed sensor will feed back the abnormal speed signal to the controller, indicating that the first fan 3 may have problems such as motor failure, bearing wear, or blade obstruction, so as to repair the first fan 3 in a timely manner and ensure the cooling effect of the first fan 3 on the sealed electrical control box.

[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A sealed electrical control box, characterized in that, include: The electrical control box housing (1) is provided with a sealed cavity; Capacitor (2), the capacitor (2) is located inside the sealed cavity; The first fan (3) is disposed inside the sealed cavity, and the air outlet side of the first fan (3) faces the capacitor (2). The first fan (3) can blow the air inside the sealed electrical control box.

2. The sealed electrical control box according to claim 1, characterized in that, The number of the first fan (3) is at least two.

3. The sealed electrical control box according to claim 1, characterized in that, The sealed electrical control box also includes an inductor and a chip, both of which are disposed inside the sealed cavity.

4. The sealed electrical control box according to claim 1, characterized in that, The first fan (3) is detachably connected to the inner wall of the sealed cavity.

5. The sealed electrical control box according to claim 4, characterized in that, The first fan (3) and the inner wall of the sealed cavity are connected by the first bolt.

6. The sealed electrical control box according to claim 5, characterized in that, The electrical control box housing (1) includes a housing (11) and a cover (12), wherein the housing (11) and the cover (12) are detachably and sealingly fastened together so that the housing (11) and the cover (12) cooperate to form the sealed cavity.

7. The sealed electrical control box according to claim 6, characterized in that, The housing (11) and the cover (12) are detachably connected by a second bolt.

8. The sealed electrical control box according to claim 7, characterized in that, The sealed electrical control box also includes a radiator (4), the electrical control box housing (1) is a heat-conducting element, the radiator (4) is disposed on the outer wall of the electrical control box housing (1), and the radiator (4) is thermally connected to the capacitor (2) through the electrical control box housing (1).

9. The sealed electrical control box according to claim 8, characterized in that, The radiator (4) is positioned opposite the capacitor (2) on the outer wall of the electrical control box housing (1); And / or, the sealed electrical control box further includes a second fan (5), the exhaust side of which faces the radiator (4).

10. The sealed electrical control box according to any one of claims 1-9, characterized in that, The first fan (3) is a turbulence fan.

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