Energy-saving electric meter box based on bernoulli effect heat dissipation

Abstract

The utility model discloses an energy -conserving electric meter box based on bernoulli effect heat dissipation, including the box, the middle end of box inner chamber is provided with the air -guide chamber, the top of box and located the top of air -guide chamber is provided with the air -out channel, the top of box outer surface and located the top of air -out channel fixed mounting has the fairing. The utility model discloses through the heat dissipation fan in the normally open temperature control switch trigger after the initiative of outside air through the air -out channel, air -guide frame and send into the box inside and the air -guide chamber, and cooperate heat -conducting aluminium sheet, can heat -exchange with the heat that the electric meter body and electrical element produced and conducted on the installation backboard fast, through the long and narrow design of the fairing on the top of air -out channel promotes the air -out flow rate to rise, and utilizes bernoulli effect to form low pressure area on the top of heat dissipation, improves the speed of hot air in the box by the heat dissipation place and exhausts, reduces the stagnation of hot air, thereby realizes the active air -in heat -exchange and the high -efficient heat dissipation of accelerated air -out.

Description

Technical Field

[0001] This utility model relates to the field of meter box technology, specifically to an energy-saving meter box based on Bernoulli effect heat dissipation. Background Technology

[0002] In power supply systems, meter boxes serve as critical terminal equipment carriers, primarily used for installing and fixing smart meters, current transformers, data acquisition modules, and related power distribution lines. They also provide protection against dust, water, and external damage. These are core components ensuring accurate power metering, stable data transmission, and safe electricity use. However, with the intelligent upgrading of power systems and the growth of user electricity demand, the number of integrated electrical devices within meter boxes has increased, and the power density of these devices has significantly improved. During long-term operation, this generates continuous heat, causing the internal ambient temperature of the meter box to gradually rise.

[0003] However, most current meter boxes rely on natural heat dissipation to regulate their internal temperature. This mainly depends on the heat conduction of the meter box itself and natural convection formed by a few ventilation holes on the side walls of the box. Due to the limited thermal conductivity of the box material, the transfer of heat from inside the box to the external environment is slow. At the same time, the natural convection formed by temperature difference has weak airflow dynamics, resulting in a low frequency of heat exchange within the box. This makes it difficult to dissipate heat quickly and effectively, causing the temperature inside the meter box to rise continuously. Excessive temperature not only affects the measurement accuracy of the meter, leading to increased measurement errors, but also accelerates the aging of the meter and other electrical components, shortening their service life. Utility Model Content

[0004] The purpose of this invention is to provide an energy-saving meter box based on the Bernoulli effect for heat dissipation. It has a good heat dissipation structure, which effectively improves the heat dissipation effect inside the meter box and ensures the safe operation of the internal electrical equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an energy-saving meter box based on Bernoulli effect heat dissipation, comprising a box body, an air guide cavity in the middle of the inner cavity of the box body, an exhaust duct in the top of the box body above the air guide cavity, a flow guide shroud fixedly installed in the top of the outer surface of the box body above the exhaust duct, a heat dissipation vent in the middle of the top of the box body, a mounting back plate fixedly installed in the inner cavity of the box body in front of the air guide cavity, a thermally conductive aluminum sheet fixedly installed on the back of the mounting back plate, a meter body fixedly installed on the upper end of the front surface of the mounting back plate, a normally open temperature control switch fixedly installed in the middle of the front surface of the mounting back plate, a fixed shell fixedly installed at the bottom of the box body, a partition fixedly installed in the inner cavity of the fixed shell, cooling fans fixedly installed at both ends of the partition, an air guide frame fixedly installed between the top of the fixed shell and the lower end of the mounting back plate, and an air outlet in front of the air guide frame in the top of the fixed shell.

[0006] As a preferred embodiment, a fixing plate is fixedly installed on the upper ends of both sides of the outer surface of the box, and a protective top cover is fixedly connected to the top of the fixing plate.

[0007] As a preferred embodiment, a door is hinged to the left end of the front surface of the enclosure, and a transparent acrylic observation panel is fixedly installed on the surface of the door.

[0008] As a preferred embodiment, a nylon filter screen is fixedly installed at the bottom of the fixed shell.

[0009] As a preferred embodiment, the heat dissipation vent is inclined.

[0010] As a preferred embodiment, the thermally conductive aluminum sheet is corrugated.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention utilizes a cooling fan that, when triggered by a normally open temperature control switch, actively draws outside air into the enclosure and air guide cavity through the air vents and guide frame. Combined with heat-conducting aluminum sheets, this allows for rapid heat exchange with the heat generated and conducted by the meter body and electrical components on the mounting backplate. Simultaneously, the elongated design of the exhaust duct's upper airflow guide increases the exhaust velocity and utilizes the Bernoulli effect to create a low-pressure zone above the vents, increasing the speed at which hot air is expelled from the enclosure and reducing air stagnation. This achieves efficient heat dissipation through active air intake and accelerated exhaust, ensuring the enclosure temperature quickly drops to a safe range. Furthermore, since the cooling fan's operation is entirely controlled by the normally open temperature control switch, it can disconnect the cooling fan's circuit when the enclosure temperature drops, preventing continuous operation and increased energy consumption. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present utility model;

[0014] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0015] Figure 3 This is a schematic cross-sectional view of the right side of the box body of this utility model;

[0016] Figure 4 This is a schematic diagram of the cross-sectional structure of the back of the box body of this utility model.

[0017] In the diagram: 1. Cabinet; 2. Cabinet door; 3. Mounting back panel; 4. Meter body; 5. Fixing shell; 6. Air outlet; 7. Air guide frame; 8. Fixing plate; 9. Protective top cover; 10. Nylon filter screen; 11. Normally open temperature control switch; 12. Partition; 13. Cooling fan; 14. Air guide cavity; 15. Thermally conductive aluminum sheet; 16. Exhaust duct; 17. Heat dissipation port; 18. Air guide cover. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0020] The components in this application, such as the enclosure 1, enclosure door 2, mounting back plate 3, meter body 4, fixing shell 5, air outlet 6, air guide frame 7, fixing plate 8, protective top cover 9, nylon filter 10, normally open temperature control switch 11, partition 12, cooling fan 13, air guide cavity 14, thermally conductive aluminum sheet 15, exhaust duct 16, heat dissipation port 17, and air guide cover 18, are all general standard parts or parts known to those skilled in the art. Their structure and principle are common knowledge and can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0021] Example 1:

[0022] Please see Figures 1-4As shown, this utility model provides an energy-saving meter box based on Bernoulli effect heat dissipation, including a box body 1. An air guide cavity 14 is provided in the middle of the inner cavity of the box body 1. An exhaust duct 16 is provided on the top of the box body 1 above the air guide cavity 14. A flow guide shroud 18 is fixedly installed on the top of the outer surface of the box body 1 above the exhaust duct 16. A heat dissipation vent 17 is provided in the middle of the top of the box body 1. A mounting back plate 3 is fixedly installed in the inner cavity of the box body 1 in front of the air guide cavity 14. A mounting back plate 3 is fixedly installed on the back of the mounting back plate 3. The back panel 3 is equipped with a heat-conducting aluminum sheet 15. The upper end of the front surface of the back panel 3 is fixedly installed with a meter body 4. The middle of the front surface of the back panel 3 is fixedly installed with a normally open temperature control switch 11. The bottom of the housing 1 is fixedly installed with a fixed shell 5. The inner cavity of the fixed shell 5 is fixedly installed with a partition 12. Both ends of the partition 12 are fixedly installed with a cooling fan 13. The top of the fixed shell 5 and the lower end of the back panel 3 are fixedly installed with an air guide frame 7. The top of the fixed shell 5 and in front of the air guide frame 7 are provided with an air outlet 6.

[0023] In this technical solution, during use, the internal temperature of the enclosure 1 gradually increases due to the continuous operation of the electrical equipment. When the temperature reaches the operating value of the normally open temperature control switch 11, the circuit inside the normally open temperature control switch 11 closes, and the circuit of the cooling fan 13 is connected to start working. Under the action of the cooling fan 13, the outside air can be driven through the air outlet 6 and the air guide frame 7 on the fixed shell 5 to blow into the enclosure 1 and the air guide cavity 14. While blowing air to cool the inside of the enclosure 1, during the process of air blowing into the air guide cavity 14, it can fully contact and exchange heat with the temperature conducted to the mounting back plate 3 and the heat-conducting aluminum sheet 15 on the back of the electrical equipment. Subsequently, the air inside the air guide cavity 14 after heat exchange can pass through the exhaust duct 16 and the guide shroud 18. The air is discharged to the outside. Because the air volume delivered in the exhaust duct 16 and the guide shroud 18 is large, and because the guide shroud 18 adopts a narrow and long design, the air velocity inside the guide shroud 18 and above the heat dissipation port 17 is high. According to the Bernoulli effect, the higher the air velocity, the lower the pressure. This creates a low-pressure area above the heat dissipation port 17, which allows the hot air rising in the box 1 to be quickly discharged upward through the heat dissipation port 17, effectively reducing the time that hot air stays in the box 1 and improving the heat dissipation effect inside the box 1. Since the operation of the cooling fan 13 is entirely controlled by the normally open temperature control switch 11, when the temperature inside the box 1 drops, the normally open temperature control switch 11 can disconnect the circuit of the cooling fan 13 accordingly, preventing the cooling fan 13 from running continuously and increasing operating energy consumption.

[0024] It should be noted that: First, the normally open temperature control switch 11 is existing technology and is a temperature-sensitive control element. When the temperature rises to its preset rated operating value, the switch will automatically close and connect the circuit. The rated operating value of the selected normally open temperature control switch 11 is 50-55 degrees Celsius, and the recovery temperature is 40-45 degrees Celsius. Second, the normally open temperature control switch 11 and the cooling fan 13 are connected to the mains power through a series cable. Third, the air guide area of ​​the air outlet 6 is one-third of the air guide area of ​​the air guide frame 7.

[0025] Example 2:

[0026] Based on Embodiment 1, this utility model is as follows: Figures 1-4 As shown, a fixing plate 8 is fixedly installed on the upper ends of both sides of the outer surface of the box 1. A protective top cover 9 is fixedly connected to the top of the fixing plate 8. A box door 2 is hinged to the left end of the front surface of the box 1. A transparent acrylic observation plate is fixedly installed on the surface of the box door 2. A nylon filter screen 10 is fixedly installed at the bottom of the fixing shell 5. The heat dissipation vent 17 is inclined. The heat-conducting aluminum sheet 15 is corrugated.

[0027] In this technical solution, the protective top cover 9 can protect the top of the box 1. The box door 2 and the transparent acrylic observation panel can protect the front of the box 1 while allowing personnel to observe the inside of the box 1. The nylon filter 10 can filter the dust in the air driven by the cooling fan 13 inside the fixed shell 5. The inclined design of the heat dissipation vent 17 can effectively prevent air from entering due to the opposite direction of the exhaust air in the air guide shroud 18. The corrugated design of the heat-conducting aluminum sheet 15 can effectively increase the contact and heat exchange area between the heat-conducting aluminum sheet 15 and the air.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. An energy-saving meter box based on Bernoulli effect heat dissipation, comprising a box body (1), characterized in that: An air guide cavity (14) is provided in the middle of the inner cavity of the box (1). An exhaust duct (16) is provided on the top of the box (1) above the air guide cavity (14). A flow guide shroud (18) is fixedly installed on the top of the outer surface of the box (1) above the exhaust duct (16). A heat dissipation vent (17) is provided in the middle of the top of the box (1). A mounting back plate (3) is fixedly installed in the inner cavity of the box (1) in front of the air guide cavity (14). A heat-conducting aluminum sheet (15) is fixedly installed on the back of the mounting back plate (3). The upper end of the surface is fixedly installed with the meter body (4), the middle of the front surface of the mounting back plate (3) is fixedly installed with a normally open temperature control switch (11), the bottom of the box (1) is fixedly installed with a fixed shell (5), the inner cavity of the fixed shell (5) is fixedly installed with a partition (12), both ends of the partition (12) are fixedly installed with a cooling fan (13), the top of the fixed shell (5) and the lower end of the mounting back plate (3) are fixedly installed with an air guide frame (7), and the top of the fixed shell (5) and in front of the air guide frame (7) is provided with an air outlet (6).

2. The energy-saving meter box based on Bernoulli effect heat dissipation according to claim 1, characterized in that: The upper ends of both sides of the outer surface of the box (1) are fixedly installed with fixing plates (8), and the top of the fixing plates (8) is fixedly connected with a protective top cover (9).

3. The energy-saving meter box based on Bernoulli effect heat dissipation according to claim 1, characterized in that: The left end of the front surface of the box (1) is hinged to a door (2), and a transparent acrylic observation plate is fixedly installed on the surface of the door (2).

4. The energy-saving meter box based on Bernoulli effect heat dissipation according to claim 1, characterized in that: A nylon filter screen (10) is fixedly installed at the bottom of the fixed shell (5).

5. An energy-saving meter box based on Bernoulli effect heat dissipation according to claim 1, characterized in that: The heat dissipation vent (17) is set at an angle.

6. The energy-saving meter box based on Bernoulli effect heat dissipation according to claim 1, characterized in that: The thermally conductive aluminum sheet (15) is corrugated.

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