Electric energy metering box for controlling temperature rise

Abstract

The utility model discloses a kind of electric energy metering boxes of controlling temperature rise, the electric energy metering box of controlling temperature rise includes box, mounting block, heat sink, the box is equipped with several equal-interval perforations from top to bottom, the back of the box is equipped with recess, the mounting block is equipped with heat conduction part, and pass through perforation, the heat conduction part is equipped with several equal-interval first recess, the heat sink is fixed in heat conduction part. By multiple extension parts embedding first recess, promote heat conduction part to conduct heat to heat sink efficiency, in natural air cooling state, heat is transferred to heat sink by mounting block and heat conduction part, air is heated and rises, is guided and is discharged by flow guide plate, cold air enters by first vent hole and recess bottom, forms air convection circulation;When heat dissipation component starts, enhance the air flow speed in recess, box, mounting block expands contact area by second vent hole, optimizes heat dissipation performance, promotes heat dissipation efficiency, guarantees equipment stable operation, prolongs its service life.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and in particular to an energy metering box for controlling temperature rise. Background Technology

[0002] Electricity metering boxes are key metering devices at the end of power transmission and distribution systems. With increased economic activity, urbanization, and industrial upgrading, electricity demand continues to grow, prompting the government to increase investment in rural and urban power grids. As a terminal metering device, the application scope of electricity metering boxes is expanding accordingly. This device typically integrates an electricity meter, metering voltage and current transformers, and secondary circuits for metering and distribution in user-end circuits. Based on voltage level, they are divided into high-voltage and low-voltage types; based on installation location, they can be divided into indoor and outdoor types.

[0003] In non-metallic metering boxes, internal electrical components are installed within the box casing. Compared to metal casings, non-metallic casings reduce the risk of electrostatic conduction and electric shock, but their heat dissipation performance is inferior to that of metal materials. Existing heat dissipation methods mostly rely on natural air cooling through ventilation holes in the casing, which has limited heat dissipation efficiency and makes it difficult to effectively control the internal temperature. Based on this current technological situation, the applicant has made design improvements aimed at solving the aforementioned problem of insufficient heat dissipation. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the traditional power metering box design and to provide a product that improves heat dissipation efficiency and controls temperature rise.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] An energy metering box for controlling temperature rise includes a box body, a mounting block, and a heat dissipation block. The box body has several equally spaced perforations from top to bottom. The back of the box body has a cavity. The mounting block has a heat-conducting part that passes through the perforations. The heat-conducting part has several equally spaced first grooves. The heat dissipation block is fixed to the heat-conducting part and disposed in the cavity. The heat dissipation block has several equally spaced heat dissipation fins. The back of the heat dissipation block has an extension corresponding to the first groove and is embedded therein. A guide plate is provided above the box body and the cavity. The box body has an air duct located below the guide plate. A heat dissipation assembly is provided between the guide plate and the box body and located directly in front of the air duct.

[0007] Preferably, the bottom of the housing is provided with a plurality of first ventilation holes, and a removable filter screen is provided at the entrance of the first ventilation holes. The filter screen is also provided at the entrance of the recess.

[0008] Preferably, the air duct is located at the inner top of the housing, and an inclined expansion portion is provided above the cavity and facing the heat dissipation assembly.

[0009] Preferably, the mounting block has fixing parts on both sides, and the mounting block has several vertically arranged, equally spaced second ventilation holes located below the air duct.

[0010] Preferably, the top two sides of the box body are provided with raised portions, and the back two sides of the box body are provided with second grooves.

[0011] Preferably, the guide plate is fixed to the raised part by screws, and the guide plate is provided with a curved guide plate, which is fixed to the second groove by screws.

[0012] Preferably, the heat dissipation assembly includes a support frame, the support frame is provided with at least one fan, and the support frame is provided with a plurality of third ventilation holes, which are arranged between adjacent fans.

[0013] Preferably, the unused perforation is provided with a plug.

[0014] Beneficial effects:

[0015] This invention improves the efficiency of heat conduction from the heat-conducting part to the heat sink by embedding multiple extensions into the first groove. Under natural air cooling conditions, the heat dissipation component is not operating, and the heat generated by the internal electronic components is transferred to the heat dissipation part through the mounting block and the heat-conducting part. After the heat dissipation fins come into contact with the air in the recess, the air temperature rises, and the density change causes an upward airflow, which is guided out of the box by the guide plate. At the same time, the high-temperature air in the box is also discharged through the air duct, and the cold air enters from the first ventilation hole and the bottom of the recess, forming an air convection circulation and improving the heat dissipation efficiency. When the temperature inside the box reaches a set threshold, the heat dissipation component is activated, increasing the air flow speed in the recess and inside the box. The mounting block expands the contact area with the cold air through the second ventilation hole, further optimizing the heat dissipation performance. This design effectively improves the heat dissipation efficiency, controls the temperature rise of the equipment, ensures operational stability, and extends the service life of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an energy metering box for controlling temperature rise according to the present invention;

[0017] Figure 2 This is a schematic diagram of the back structure of an energy metering box for controlling temperature rise according to the present invention.

[0018] Figure 3 This is a side cross-sectional view of an energy metering box for controlling temperature rise according to the present invention.

[0019] Figure 4 This utility model Figure 3 Enlarged view of a portion of point A in the middle;

[0020] Figure 5This is an exploded structural diagram of an energy metering box for controlling temperature rise according to the present invention.

[0021] The correspondence between the labels and component names in the attached figures is as follows:

[0022] Reference numerals: 1. Housing; 2. Mounting block; 3. Heat sink block; 4. Guide plate; 5. Heat dissipation assembly; 6. Filter screen; 7. Expansion section; 8. Block; 11. Perforation; 12. Cavity; 13. Air duct; 14. First ventilation hole; 15. Elevated section; 16. Second groove; 21. Heat-conducting section; 22. First groove; 23. Fixing section; 24. Second ventilation hole; 31. Heat dissipation fins; 32. Extension section; 41. Guide plate; 51. Support frame; 52. Fan; 53. Third ventilation hole. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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.

[0025] Reference example Figures 1 to 5 An energy metering box for controlling temperature rise includes a box body 1, a mounting block 2, and a heat sink 3. The box body 1 has several equally spaced perforations 11 from top to bottom. The back of the box body 1 has a cavity 12. The mounting block 2 has a heat-conducting part 21 that passes through the perforations 11. The heat-conducting part 21 has several equally spaced first grooves 22. The heat sink 3 is fixed to the heat-conducting part 21 and is set in the cavity 12. The heat sink 3 has several equally spaced heat dissipation fins 31. The back of the heat sink 3 has an extension 32 corresponding to the first groove 22 and is embedded therein. A guide plate 4 is provided above the box body 1 and the cavity 12. The box body 1 has an air duct 13 located below the guide plate 4. A heat dissipation component 5 is provided between the guide plate 4 and the box body 1 and is located in front of the air duct 13. By embedding multiple extensions 32 into the first grooves 22, the efficiency of the heat-conducting part 21 in conducting heat to the heat sink 3 is improved.

[0026] It is worth mentioning that the bottom of the housing 1 is provided with several first ventilation holes 14. A removable filter screen 6 is provided at the entrance of the first ventilation hole 14. The filter screen 6 is also provided at the entrance of the cavity 12. The filter screen 6 can be pulled out along the bottom of the first ventilation hole 14 and the cavity 12. The two sides of the housing 1 are provided with structures to guide the movement of the filter screen 6 to ensure smooth operation. This design is easy to clean and maintain, and improves the ease of use. The filter screen 6 is tightly matched with the first ventilation hole 14 to prevent foreign objects from entering and the second ventilation hole 24 and the cavity 12 from being blocked, thus ensuring the stable operation of the heat dissipation component 5. Temperature sensors and control panels can be installed on the side walls inside the housing 1 to monitor the temperature data inside the housing 1 in real time and feed the temperature data back to the control panel. When the temperature data reaches the set threshold, the control panel sends a command to the fan 52. Since this is prior art and is not the focus of the protection technology of this application, it is described here.

[0027] It is worth mentioning that the air duct 13 is located at the top inner part of the housing 1, above the cavity 12. The air duct 13 is provided with an inclined expansion part 7, which faces the heat dissipation component 5. The airflow in the air duct 13 and the cavity 12 is easily drawn by the heat dissipation component 5 through the expansion part 7, which accelerates the exhaust process. The expansion part 7 has an optimized airflow channel structure, improves the suction efficiency, is reasonably designed, enhances the airflow guidance effect, and improves the overall heat dissipation performance.

[0028] It is worth mentioning that the mounting block 2 has fixing parts 23 on both sides. The mounting block 2 has several vertically arranged second ventilation holes 24 at equal intervals, which are located below the air duct 13. Electrical components such as air switches and AC contactors are snapped onto the fixing parts 23 to achieve connection and fixation with the mounting block 2. The design of the second ventilation holes 24 increases the contact area between the mounting block 2 and the air inside the box 1, thereby improving the heat exchange efficiency.

[0029] It is worth mentioning that the top two sides of the box 1 are provided with raised parts 15, and the back two sides of the box 1 are provided with second grooves 16. The second grooves 16 are used to accommodate the diversion plate 41, so that the diversion plate 41 is flush with the back of the box 1, ensuring that when the box 1 is installed with the wall, a ventilation channel is formed between the cavity 12 and the wall, while the diversion plate 41 and the cavity 12 maintain a distance for gas flow.

[0030] It is worth mentioning that the guide plate 4 is fixed to the raised part 15 by screws. The guide plate 4 is provided with a curved guide plate 41, which is fixed to the second groove 16 by screws. The curved guide plate 41 guides the hot air in the cavity 12 into the space between the guide plate 4 and the top of the box 1, and then discharges through the third ventilation hole 53. The curved structure design optimizes the airflow path, improves the discharge efficiency, and prevents product turbulence. At the same time, the guide plate 41 and the guide plate 4 prevent dust from entering the box 1 and the cavity 12.

[0031] It is worth mentioning that the heat dissipation component 5 includes a support frame 51, the support frame 51 is provided with at least one fan 52, the support frame 51 is provided with multiple third ventilation holes 53 and is arranged between adjacent fans 52, the third ventilation holes 53 improve the heat dissipation efficiency in the self-heating air-cooling state;

[0032] It is worth mentioning that the empty perforation 11 is equipped with a blocking block 8. The blocking block 8 prevents the outside humid air from entering the cabinet 1 through the empty perforation 11, ensuring a stable internal environment. According to customer needs, the mounting block 2 can be set in different positions of the perforation 11 to adapt to diverse installation requirements. The heat dissipation block 3 is connected to the mounting block 2 by screws, which makes it easy to adjust the installation position according to the actual scenario. The structure is flexible, improving applicability and installation convenience.

[0033] The working principle of this utility model is described as follows:

[0034] In natural air cooling mode, the heat dissipation component 5 does not operate. The heat generated by the internal electronic components is transferred to the heat dissipation part through the mounting block 2 and the heat conduction part 21. After the heat dissipation fins 31 come into contact with the air in the cavity 12, the air temperature rises and the density change causes an upward airflow, which is guided out of the box 1 by the guide plate 4. At the same time, the high temperature air in the box 1 is also discharged through the air duct 13. The cold air enters from the first ventilation hole 14 and the bottom of the cavity 12, forming an air convection circulation and improving the heat dissipation efficiency.

[0035] When the temperature inside the enclosure 1 reaches the set threshold, the heat dissipation component 5 is activated, which enhances the airflow speed between the cavity 12 and the enclosure 1. The mounting block 2 expands the contact area with the cold air through the second ventilation hole 24, further optimizing the heat dissipation performance. This design effectively improves heat dissipation efficiency, controls equipment temperature rise, ensures operational stability, and extends equipment service life.

[0036] The above design scheme can enable the product to achieve the advantages of improved heat dissipation efficiency and controlled temperature rise.

[0037] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. An energy metering box for controlling temperature rise, comprising a box body (1), a mounting block (2), and a heat dissipation block (3), characterized in that: The housing (1) has several equally spaced perforations (11) from top to bottom. The back of the housing (1) has a recess (12). The mounting block (2) has a heat-conducting part (21) that passes through the perforations (11). The heat-conducting part (21) has several equally spaced first grooves (22). The heat sink (3) is fixed to the heat-conducting part (21) and is placed in the recess (12). The heat sink (3) has several equally spaced heat dissipation fins (31). The back of the heat sink (3) has an extension (32) corresponding to the first groove (22) and is embedded therein. A guide plate (4) is provided above the housing (1) and the recess (12). The housing (1) has an air duct (13) located below the guide plate (4). A heat dissipation component (5) is provided between the guide plate (4) and the housing (1) and is located in front of the air duct (13).

2. The energy metering box for controlling temperature rise according to claim 1, characterized in that: The bottom of the box (1) is provided with a number of first ventilation holes (14), and a detachable filter screen (6) is provided at the entrance of the first ventilation hole (14). The filter screen (6) is also provided at the entrance of the cavity (12).

3. The energy metering box for controlling temperature rise according to claim 1, characterized in that: The air duct (13) is located at the top inner part of the housing (1). Above the cavity (12), the air duct (13) is provided with an inclined expansion part (7) and faces the heat dissipation assembly (5).

4. The energy metering box for controlling temperature rise according to claim 1, characterized in that: The mounting block (2) has fixing parts (23) on both sides. The mounting block (2) has several vertically arranged second ventilation holes (24) at equal intervals, which are located below the air duct (13).

5. The energy metering box for controlling temperature rise according to claim 1, characterized in that: The top two sides of the box (1) are provided with raised parts (15), and the back two sides of the box (1) are provided with second grooves (16).

6. The energy metering box for controlling temperature rise according to claim 5, characterized in that: The guide plate (4) is fixed to the raised part (15) by screws. The guide plate (4) is provided with a curved guide plate (41) and is fixed to the second groove (16) by screws.

7. The energy metering box for controlling temperature rise according to claim 6, characterized in that: The heat dissipation assembly (5) includes a support frame (51), which is provided with at least one fan (52) and a plurality of third ventilation holes (53) which are arranged between adjacent fans (52).

8. The energy metering box for controlling temperature rise according to claim 1, characterized in that: The unused perforation (11) is provided with a plug (8).

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