An energy-saving and heat-dissipating high and low voltage switchgear

Abstract

This invention relates to the field of heat dissipation technology for distribution cabinets, and discloses an energy-saving heat dissipation type high and low voltage complete distribution cabinet, including a cabinet body, an evaporator tube installed at the bottom of the cabinet body, a condenser tube connected to the evaporator tube mounted on the outer back of the cabinet body, a compression structure on the outer bottom of the cabinet body, and fan blades installed at the bottom of the cabinet body to blow air upwards. The compression structure has a built-in coil and magnet to achieve rotation drive, and its outer compression blades rotate synchronously with the fan blades on the same axis, which can simultaneously complete the refrigerant compression and airflow circulation within the cabinet. This invention integrates the heat dissipation drive mechanism through a coaxial linkage structure, optimizes the refrigerant circulation and cabinet air convection heat dissipation effect, and solves the problems of high energy consumption, poor heat dissipation efficiency, and structural redundancy in traditional distribution cabinets. It has the characteristics of uniform heat dissipation, low energy consumption, strong adaptability, and stable operation, and is suitable for heat dissipation and cooling of various high and low voltage complete distribution cabinets.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation in distribution cabinets, and in particular to an energy-saving heat dissipation type high and low voltage complete distribution cabinet. Background Technology

[0002] High and low voltage switchgear is a core piece of equipment in power transmission and distribution systems, widely used in industrial production, building power supply, and power operation and maintenance. During long-term operation, the internal electrical components such as circuit breakers, transformers, and busbars of the switchgear continuously generate a large amount of heat. If this heat cannot be dissipated in time, the internal temperature of the cabinet will become too high, which will not only accelerate the aging of electrical components and reduce the operating accuracy of the equipment, but also easily cause faults such as short circuits, tripping, and even equipment burnout, seriously affecting the operational stability and safety of the power system.

[0003] Currently, the heat dissipation structures of high and low voltage distribution cabinets on the market are relatively simple, mostly relying on traditional forced convection cooling by fans or simple refrigerant circulation cooling. Traditional heat dissipation equipment often adopts a split drive structure, with the cooling fan and refrigerant compression equipment operating independently, resulting in high energy consumption, cumbersome overall structure, large space occupation, high noise, and significant energy loss during operation. Furthermore, existing condensation cooling structures have poor coordination with the cabinet ventilation structure, low airflow circulation efficiency inside the cabinet, short contact time between cold air and the condensation structure, poor condensation cooling effect, and inability to flexibly adjust ventilation volume according to the cabinet temperature. Long-term operation results in high energy consumption, failing to meet the current requirements for efficient, energy-saving, and stable heat dissipation in distribution cabinets. Therefore, this invention proposes an energy-saving heat dissipation type high and low voltage complete distribution cabinet to solve the above problems. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides an energy-saving and heat-dissipating high and low voltage switchgear.

[0005] The present invention provides an energy-saving and heat-dissipating high and low voltage switchgear with the following technical solution:

[0006] An energy-saving and heat-dissipating high and low voltage switchgear includes:

[0007] Cabinet, main structure of the power distribution cabinet;

[0008] Evaporator pipes are located at the bottom of the cabinet.

[0009] The condenser pipe is located on the outside of the back of the cabinet and is connected to the evaporator pipe via an expansion valve.

[0010] The compression structure is located on the bottom outer side of the cabinet, with its input end connected to the evaporator pipe and its output end connected to the condenser pipe.

[0011] The fan blades are located at the bottom inside the cabinet, below the condenser pipe, and they propel the airflow from bottom to top.

[0012] The compression structure includes a fixed housing, a coil structure fixedly connected to the center of the housing, a rotating sleeve rotatably connected to the middle section of the housing, a magnet that cooperates with the coil fixedly connected to the inner wall of the rotating sleeve, and blades that compress the gas in the evaporator tube fixedly connected to the outer wall of the rotating sleeve. The compressed gas flow is directed to the condenser tube.

[0013] The fan blades are coaxially fixedly connected to the top of the rotating sleeve, so that the blades and the fan blades rotate synchronously under the action of the coil and the magnet.

[0014] Preferably, the blade has an arc-shaped structure when viewed from above, and its ring array is distributed on the outer side wall of the rotating sleeve, with the arc-shaped orientation consistent with the rotation direction;

[0015] The inner wall of the blade is also integrally formed with a flow guide block. The cross-sectional area of ​​the flow guide block gradually decreases from the outside to the inside, and both ends of the flow guide block are right-angled triangular structures. One of its two base sides is located at the top, and the other side is attached to the inner wall of the blade. The inclined surface is set to the downward.

[0016] Preferably, the top of the housing is fixedly connected to the bottom wall of the cabinet, and the bottom of the housing is bolted to a cover plate that seals the bottom opening.

[0017] Preferably, the cover plate is fixedly connected to a flow channel communicating with the compression chamber at the lower position of the rotating sleeve. The flow channel is located at the lower end of the blade guide block and receives the compressed airflow. The flow channel is also connected to an external condenser pipe through a pipeline.

[0018] Preferably, a channel penetrating the side wall is provided at the location of the condenser pipe on the back of the cabinet, and an elastic air guide shroud is provided above the channel inside the cabinet. Both sides of the air guide shroud are designed with electric push rods, and the extension and retraction of the two electric push rods control the size of the bottom opening of the air guide shroud.

[0019] Preferably, the back of the cabinet is also fixedly connected to an air guide hood that is connected to the channel, with the opening of the air guide hood facing the condenser pipe.

[0020] Preferably, a reflector is also provided on the outer back of the cabinet corresponding to the air guide hood. The reflector and the air guide hood are located on both sides of the condenser pipe. The two work together to increase the contact time between some of the cold air flowing out of the cabinet and the condenser pipe, thereby increasing the cooling effect of the condenser pipe.

[0021] Preferably, the condenser and the expansion valve are connected by a connecting pipe.

[0022] Preferably, the housing is connected to the evaporator tube output end via pipe a.

[0023] In summary, the present invention has at least one of the following beneficial technical effects:

[0024] 1. Achieve coaxial linkage and integrated drive, significantly reducing equipment energy consumption. This device uses a coil and magnet to drive the rotating sleeve to rotate, causing the refrigerant compressor blades and the cooling fan blades inside the cabinet to rotate synchronously. A single power structure can simultaneously complete both refrigerant compression and cooling and air convection cooling inside the cabinet. This eliminates the traditional structure of separate independent drives for fans and compressors, simplifies the overall equipment structure, reduces the investment in power components, effectively reduces equipment operating power and energy consumption, avoids energy loss and failure probability caused by multiple devices operating, and achieves the goal of energy-saving operation.

[0025] 2. Dual heat dissipation system significantly improves the overall heat dissipation efficiency of the distribution cabinet. This device combines refrigerant phase change circulation heat dissipation with air convection heat dissipation. Heat is absorbed from inside the cabinet through evaporator tubes, and continuous cooling is achieved through compression and condensation cycles. Simultaneously, fan blades drive airflow from bottom to top within the cabinet, ensuring uniform temperature and preventing localized heat accumulation. With an adjustable airflow guide structure and the coordinated use of air guide shrouds and reflectors, the ventilation volume can be adjusted according to operating conditions, extending the contact time between cool air and the condenser tubes, enhancing the condensation heat dissipation effect, and improving heat dissipation efficiency in both directions. This effectively solves the problem of high-temperature heat accumulation inside the cabinet and ensures stable operation of electrical components.

[0026] 3. Optimized structure with strong adaptability and higher equipment operational stability. The device features an arc-shaped blade structure and specially designed guide blocks, which effectively reduces airflow turbulence losses during refrigerant compression, improves refrigerant compression and delivery efficiency, and ensures stable refrigeration cycle. Simultaneously, the adjustable guide shroud can flexibly adjust the ventilation openings according to the cabinet temperature, reducing cold air leakage in low-temperature environments to further save energy, and maximizing ventilation and heat dissipation in high-temperature environments. This adapts to the operational needs of distribution cabinets under different loads and environments, effectively extending the service life of electrical equipment inside the distribution cabinet and improving the safety and stability of the power system operation. Attached Figure Description

[0027] Figure 1 This is an isometric structural schematic diagram of an embodiment of the invention.

[0028] Figure 2 This is a rear-view isometric structural schematic diagram of an embodiment of the invention.

[0029] Figure 3 This is a schematic diagram of the back condenser tube structure according to an embodiment of the invention.

[0030] Figure 4 This is an isometric view of the compressed air structure in an embodiment of the invention.

[0031] Figure 5 This is an isometric view of the compressed air structure in an embodiment of the invention, viewed from below.

[0032] Figure 6 This is a schematic diagram of the blade structure of an embodiment of the invention.

[0033] Explanation of reference numerals in the attached drawings: 1. Cabinet; 2. Evaporator tube; 3. Fan blade; 4. Air guide; 5. Electric actuator; 6. Condenser tube; 7. Connecting pipe; 8. Air guide shroud; 9. Reflector; 10. Coil; 11. Housing; 1101. Pipe a; 12. Blade; 1201. Rotating sleeve; 1202. Air guide block; 13. Magnet; 14. Cover plate; 15. Flow channel; 16. Expansion valve. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6 The present invention will be described in further detail below.

[0035] Example 1: Refer to Figure 1 - Figure 6 An energy-saving and heat-dissipating high and low voltage complete switch cabinet.

[0036] Cabinet 1 is the main structure of the power distribution cabinet;

[0037] Evaporator tube 2 is located at the bottom of cabinet 1;

[0038] The condenser pipe 6 is located on the back of the cabinet 1 and is connected to the evaporator pipe 2 via an expansion valve 16.

[0039] The compression structure is located on the bottom outside of the cabinet 1, with its input end connected to the evaporator pipe 2 and its output end connected to the condenser pipe 6.

[0040] The fan blade 3 is located at the bottom inside the cabinet 1, below the condenser pipe 6, and its blasting airflow flows from bottom to top;

[0041] The compression structure includes a fixed housing 11, a coil 10 structure fixedly connected to the center of the housing 11, a rotating sleeve 1201 rotatably connected to the middle section of the housing 11, a magnet 13 that cooperates with the coil 10 fixedly connected to the inner wall of the rotating sleeve 1201, and a blade 12 that compresses the gas in the evaporator tube 2 fixedly connected to the outer wall of the rotating sleeve 1201. The compressed airflow flows to the condenser tube 6.

[0042] The rotating shaft of the fan blade 3 is coaxially fixedly connected to the top of the rotating sleeve 1201 so that the blade 12 and the fan blade 3 rotate synchronously under the action of the coil 10 and the magnet 13.

[0043] Specifically, when the coil 10 is energized, it generates a magnetic field, which, together with the magnet 13, drives the rotating sleeve 1201 to rotate. The rotating sleeve 1201 drives the blades 12 and the fan blades 3 to rotate synchronously. When the blades 12 rotate, they compress the low-pressure gaseous refrigerant delivered from the evaporator tube 2 to form a high-temperature, high-pressure gaseous refrigerant, which is then delivered to the condenser tube 6. At the same time, the fan blades 3 rotate synchronously, driving the air inside the cabinet 1 to flow upward, thereby achieving air circulation inside the cabinet and improving heat dissipation efficiency.

[0044] Furthermore, such as Figure 6 As shown, the blade 12 has an arc-shaped structure when viewed from above, and its ring array is distributed on the outer side wall of the rotating sleeve 1201, with the arc-shaped orientation consistent with the rotation direction;

[0045] A guide block 1202 is integrally formed on the inner wall of the blade 12. The cross-sectional area of ​​the guide block 1202 gradually decreases from the outside to the inside, and both ends of the guide block 1202 are right-angled triangular structures. One of its two bases is located at the top, and the other is attached to the inner wall of the blade 12. The inclined surface is set to the downward.

[0046] Specifically, when the arc-shaped blade 12 rotates, it can efficiently push the airflow along the inner wall of the shell 11 to achieve gas compression; the inclined surface of the guide block 1202 faces downwards and can guide the compressed airflow, causing the airflow to converge in the downward flow channel 15, improving the airflow delivery efficiency, and reducing the energy loss caused by airflow turbulence.

[0047] Furthermore, the top of the housing 11 is fixedly connected to the bottom wall of the cabinet 1, and the bottom of the housing 11 is bolted to a cover plate 14 that seals its bottom opening.

[0048] The cover plate 14 is fixedly connected to the flow channel 15, which is connected to the compression chamber, at the position below the rotating sleeve 1201. The flow channel 15 is located below the end of the guide block 1202 of the blade 12 and receives the compressed airflow. The flow channel 15 is also connected to the external condenser pipe 6 through a pipe.

[0049] Specifically, the cover plate 14 seals the bottom of the housing 11 to prevent compressed gas leakage; the flow channel 15 corresponds to the lower end of the guide block 1202, which can accurately receive the airflow compressed by the blade 12 and deliver it to the condenser pipe 6 to achieve stable delivery of compressed gas.

[0050] Furthermore, a channel penetrating the side wall is provided at the position of the condenser pipe 6 on the back of the cabinet 1. An elastic flow guide shroud 4 is provided above the channel inside the cabinet 1. Electric push rods 5 are provided on both sides of the flow guide shroud 4. The extension and retraction of the two electric push rods 5 controls the size of the bottom opening of the flow guide shroud 4.

[0051] The back of the cabinet 1 is also fixedly connected to an air guide hood 8 that is connected to the channel, and the opening of the air guide hood 8 faces the condenser pipe 6.

[0052] A reflector 9 is also provided on the outer back of the cabinet 1, corresponding to the air guide 8. The reflector 9 and the air guide 8 are located on both sides of the condenser pipe 6. The two work together to increase the contact time between some of the cold air flowing out of the cabinet 1 and the condenser pipe 6, thereby increasing the cooling effect of the condenser pipe 6.

[0053] Specifically, when the temperature inside cabinet 1 is high, the electric actuator 5 can push the air guide shroud 4 to open, widening the bottom opening and allowing cold air inside the cabinet to be blown towards the condenser pipe 6 through the channel and air guide shroud 8. The reflector 9 can reflect the airflow blowing over the condenser pipe 6, prolonging the contact time between the airflow and the condenser pipe 6, improving the heat dissipation efficiency of the condenser pipe 6, and thus optimizing the condensation effect of the refrigerant. When the temperature inside cabinet 1 is low, the electric actuator 5 can drive the air guide shroud 4 to retract, reducing the opening, reducing cold air leakage, and lowering energy consumption.

[0054] Furthermore, the condenser 6 and the expansion valve 16 are connected by a connecting pipe 7.

[0055] The shell 11 is connected to the output end of the evaporator tube 2 via pipe a1101.

[0056] Specifically, the connecting pipe 7 connects the condenser pipe 6 and the expansion valve 16, so that the condensed liquid refrigerant is throttled and depressurized by the expansion valve 16 and then flows back to the evaporator pipe 2 to complete the refrigeration cycle; the pipe a1101 transports the low-pressure gaseous refrigerant in the evaporator pipe 2 to the compression chamber in the shell 11 to provide a refrigerant source for the compression process.

[0057] The working principle of this invention is:

[0058] When coil 10 is energized, it works with magnet 13 to drive rotating sleeve 1201 to rotate. Rotating sleeve 1201 drives blade 12 and fan blade 3 to rotate synchronously. Fan blade 3 drives the air inside cabinet 1 to flow upward, realizing air circulation and heat dissipation inside the cabinet. At the same time, the low-pressure gaseous refrigerant in evaporator tube 2 enters shell 11 through pipe a1101. The rotating blade 12 compresses the refrigerant to form high-temperature and high-pressure gaseous refrigerant, which is then transported to condenser tube 6 through flow channel 15. Condenser tube 6 dissipates heat and condenses the refrigerant to form liquid refrigerant, which is then transported to expansion valve 16 through connecting pipe 7. After throttling and depressurization, it flows back to evaporator tube 2 to absorb heat from cabinet 1 again, completing the refrigeration cycle. The cold air inside cabinet 1 is blown towards condenser tube 6 through guide shroud 4 and air guide shroud 8. Reflector 9 prolongs the contact time between airflow and condenser tube 6, improving the heat dissipation efficiency of condenser tube 6 and realizing energy-saving heat dissipation of the distribution cabinet.

[0059] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving and heat-dissipating high and low voltage switchgear, characterized in that: include: Cabinet (1), main structure of the power distribution cabinet; Evaporation tube (2) is located at the bottom of the cabinet (1); The condenser (6) is located on the back of the cabinet (1) and is connected to the evaporator (2) via an expansion valve (16). The compression structure is located on the bottom outside of the cabinet (1), with its input end connected to the evaporator (2) and its output end connected to the condenser (6); The fan blade (3) is located at the bottom inside the cabinet (1), below the condenser pipe (6), and its blasting airflow flows from bottom to top; The compression structure includes a fixed housing (11), a coil (10) structure is fixedly connected to the center of the housing (11), a rotating sleeve (1201) is rotatably connected to the middle section of the housing (11), a magnet (13) that cooperates with the coil (10) is fixedly connected to the inner wall of the rotating sleeve (1201), and a blade (12) that compresses the gas in the evaporator tube (2) is fixedly connected to the outer wall of the rotating sleeve (1201). The compressed gas flows to the condenser tube (6). The rotating shaft of the fan blade (3) is coaxially fixedly connected to the top of the rotating sleeve (1201) so that the blade (12) and the fan blade (3) rotate synchronously under the action of the coil (10) and the magnet (13).

2. The energy-saving and heat-dissipating high and low voltage switchgear according to claim 1, characterized in that: The blade (12) has an arc-shaped structure when viewed from above, and its ring array is distributed on the outer side wall of the rotating sleeve (1201), with its arc orientation consistent with the rotation direction; The inner wall of the blade (12) is also integrally formed with a flow guide block (1202). The cross-sectional area of ​​the flow guide block (1202) gradually decreases from the outside to the inside. Both ends of the flow guide block (1202) are right-angled triangular structures. One of its two base sides is located at the top, and the other side is attached to the inner wall of the blade (12). The inclined surface is set towards the downward side.

3. The energy-saving and heat-dissipating high and low voltage switchgear according to claim 2, characterized in that: The top of the housing (11) is fixedly connected to the bottom wall of the cabinet (1), and the bottom of the housing (11) is bolted to a cover plate (14) that seals its bottom opening.

4. The energy-saving and heat-dissipating high and low voltage switchgear according to claim 3, characterized in that: The cover plate (14) is fixedly connected to the flow channel (15) which is connected to the compression chamber at the position below the rotating sleeve (1201). The flow channel (15) is located below the end of the guide block (1202) of the blade (12) to receive the compressed airflow. The flow channel (15) is also connected to the external condenser pipe (6) through a pipe.

5. The energy-saving and heat-dissipating high and low voltage switchgear according to claim 1, characterized in that: The cabinet (1) has a channel that runs through the side wall at the position of the condenser pipe (6) on the back. An elastic flow guide shroud (4) is set above the channel inside the cabinet (1). Electric push rods (5) are designed on both sides of the flow guide shroud (4). The two electric push rods (5) extend and retract to control the size of the bottom opening of the flow guide shroud (4).

6. The energy-saving and heat-dissipating high and low voltage switchgear according to claim 5, characterized in that: The back of the cabinet (1) is also fixedly connected to an air guide hood (8) that is connected to the channel, and the opening of the air guide hood (8) faces the condenser pipe (6).

7. The energy-saving and heat-dissipating high and low voltage switchgear according to claim 6, characterized in that: A reflector (9) is also provided on the outer back of the cabinet (1) in relation to the air guide hood (8). The reflector (9) and the air guide hood (8) are located on both sides of the condenser pipe (6). The two work together to increase the contact time between some of the cold air flowing out of the cabinet (1) and the condenser pipe (6), thereby increasing the cooling effect of the condenser pipe (6).

8. The energy-saving and heat-dissipating high and low voltage switchgear according to claim 1, characterized in that: The condenser (6) and the expansion valve (16) are connected by a connecting pipe (7).

9. The energy-saving and heat-dissipating high and low voltage switchgear according to claim 1, characterized in that: The shell (11) is connected to the output end of the evaporator tube (2) via pipe a (1101).

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