An underground energy-saving heat exchange cabinet with adjustable ventilation pipe density

Abstract

This invention relates to the field of heat exchange cabinet technology, and discloses an underground energy-saving heat exchange cabinet with adjustable ventilation pipe density. The cabinet includes a cabinet body with balance supports on both sides of its outer wall to maintain balance. The interior of the cabinet consists of two independent chambers: an equipment chamber and a heat exchange chamber. Inside the heat exchange chamber is a heat exchange seat, which comprises three independent processing chambers, arranged sequentially from front to back: a phase change chamber, a hot air chamber, and a cold air chamber. By adding and setting an energy-saving exchange mechanism, during operation, this mechanism not only constructs a curved flow channel through baffles and annular channels to slow down airflow velocity and promote sufficient heat exchange between the hot and cold air chambers, thus improving heat exchange efficiency, but it can also utilize phase change energy storage material blocks to recover residual heat from the hot air. This stored latent heat is released to heat the circulating air when temperatures drop sharply at night, preventing equipment malfunctions due to low temperatures.

Description

Technical Field

[0001] This invention relates to the field of heat exchange cabinet equipment technology, specifically an underground energy-saving heat exchange cabinet with adjustable ventilation pipe density. Background Technology

[0002] Heat exchange cabinets can be broadly categorized into above-ground and underground types based on their installation method. Their core application is providing a stable operating environment for electronic equipment. In practical use, electronic equipment is installed inside the cabinet, and the cabinet's sealed structure isolates it from the external environment, preventing interference from external factors. To ensure long-term stable operation of the electronic equipment, the cabinet needs a heat exchanger to exchange heat between the inside and outside, thereby regulating the internal temperature and ensuring that temperature parameters meet the operating requirements of the electronic equipment.

[0003] The heat exchange principle of a heat exchanger is based on the orderly flow of air and multi-stage heat transfer, specifically achieved through the flow of hot and cold air in two overlapping and isolated flow channels. The entire heat exchange process consists of three core stages: the first stage is convective heat exchange between the hot airflow and the channel surface, where the hot airflow transfers heat to the channel wall; the second stage is conductive heat exchange between the channels, where heat is transferred from the hot side to the cold side through the channel wall; the third stage is convective heat exchange between the cold airflow and the channel surface, where the cold airflow absorbs heat from the channel wall and its temperature rises, ultimately achieving heat exchange between the hot and cold airflows and thus regulating the temperature inside the cabinet.

[0004] However, existing heat exchange cabinets have significant limitations in specific climatic environments, especially in regions like Xinjiang and Northwest China where diurnal temperature variations are large and climate fluctuations are severe. Currently, heat exchange cabinets employ a constant external ambient gas intake design, resulting in a correspondingly constant heat exchange volume. This makes it impossible to adaptively adjust to drastic temperature changes caused by diurnal cycles or sudden climate shifts. This constant heat exchange mode struggles to meet dynamically changing heat exchange demands, easily leading to unnecessary energy losses, affecting heat exchange efficiency and energy-saving effects, and limiting its widespread application in these special climatic regions. Therefore, those skilled in the art have proposed an underground energy-saving heat exchange cabinet with adjustable ventilation pipe density to address the aforementioned technical problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an underground energy-saving heat exchange cabinet with adjustable ventilation pipe density, which solves the problem that existing heat exchange cabinets cannot guarantee stable operation in environments with large temperature differences and drastic climate fluctuations.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an underground energy-saving heat exchange cabinet with adjustable ventilation pipe density, comprising, The cabinet has balance supports on both sides of its outer wall to maintain its balance. The interior of the cabinet consists of two independent chambers: the equipment chamber and the heat exchange chamber. The heat exchange chamber is equipped with a heat exchange seat, which consists of three independent processing chambers. From front to back, the three independent processing chambers are a phase change chamber, a hot gas chamber, and a cold gas chamber. The outer box is located on one side of the cabinet and is connected to the cooling chamber inside the heat exchange chamber through two sections of ventilation pipes. The filtration and drying mechanism, located inside the external enclosure, is used to filter and dry the airflow that is being heated inside the cabinet before it enters. The density adjustment mechanism, which is installed on the ventilation duct, is used to adjust the discharge density of the heat exchange airflow entering the cabinet. The dual-effect regulating mechanism, which is installed on the ventilation duct, is used to regulate the temperature of the heat exchange airflow entering the cabinet in a dual-effect manner. An energy-saving exchange mechanism, located inside the cabinet, is used to exchange the residual heat energy after the heat exchange airflow inside the cabinet.

[0007] Preferably, the filtration and drying mechanism includes a ventilation filter grille, and multiple sets of ventilation filter grilles are equidistantly arranged on both sides of the outer box. A mounting base is provided at the bottom inner side of the outer box, and the interior of the mounting base is connected to the interior of the ventilation duct. An activated carbon filter base is provided inside the mounting base, and both the cabinet and the outer box are provided with maintenance doors.

[0008] Preferably, the filtration and drying mechanism further includes an external connector. External connectors are provided on both the front and rear sides of the outer wall of the mounting base. The two external connectors are connected by multiple sets of hollow conduits that are equidistantly arranged. The interiors of the two external connectors are connected by multiple sets of hollow conduits. An exhaust seat is provided in the upper middle part of the outer wall of the front external connector. The top of the cold air chamber is connected to the interior of the rear external connector through an exhaust pipe.

[0009] Preferably, the density adjustment mechanism includes a connecting box, and the ends of the front and rear sections of the ventilation pipe are connected through the connecting box. Multiple sets of gas channels for external heat exchange airflow are equidistantly opened inside the ventilation pipe. An external circulation fan is provided on one side of the bottom of the heat exchange chamber. The external circulation fan inputs the gas in the ventilation pipe into the cold air chamber in the heat exchange seat through the connecting pipe.

[0010] Preferably, the density adjustment mechanism further includes a limiting groove. The limiting groove is provided in the middle of the inner side of the connecting box and is U-shaped. A storage seat is provided on the top of the inner side of the limiting groove. Multiple hollow stacked seats are provided in the storage seat. Electromagnet seats are provided on both sides of the top of each hollow stacked seat, and each set of electromagnet seats is staggered.

[0011] Preferably, the dual-effect regulating mechanism includes a conduction seat, and multiple conduction seats are equidistantly arranged in the middle of the outer wall of the ventilation pipe. A capillary tube for coolant flow is provided inside the ventilation pipe, and the capillary tube is connected to the interior of the conduction seat. A liquid storage chamber is opened inside the connecting box, and the interior of the liquid storage chamber is connected to the interior of the capillary tube at the corresponding position. A circulating cooling pump is provided on the top of the connecting box. The inlet of the circulating cooling pump is connected to the interior of the liquid storage chamber through a connecting pipe, and the outlet of the circulating cooling pump is connected to the interior of the capillary tube through a connecting pipe.

[0012] Preferably, the energy-saving exchange mechanism includes a main flow channel, the interior of the cold air chamber has a main flow channel, and the two sides of the main flow channel have staggered and connected annular channels. Multiple baffles are equidistantly arranged on the inner walls of the hot air chamber and the phase change chamber. An internal circulation fan is arranged on one side of the bottom of the heat exchange chamber. The internal circulation fan inputs the heated gas in the equipment chamber into the hot air chamber for heat exchange through a connecting pipe.

[0013] Preferably, the energy-saving exchange mechanism further includes a three-way pipe. A three-way pipe is provided on one side of the top of the heat exchange base to connect the three chambers: the phase change chamber, the hot gas chamber, and the equipment chamber. A three-way solenoid valve for controlling the gas flow direction is provided at the central intersection of the three-way pipe. The bottom of the phase change chamber is connected to the interior of the equipment chamber through a connecting pipe.

[0014] Preferably, the energy-saving exchange mechanism further includes a conductive plate, and multiple conductive plates are equidistantly arranged inside the phase change cavity, with a portion of the conductive plate extending into the interior of the hot gas cavity. Multiple contact holes are equidistantly arranged on the upper surface of the portion of the conductive plate inside the phase change cavity, and a phase change energy storage material block is arranged inside the portion of the conductive plate inside the phase change cavity.

[0015] Preferably, the energy-saving heat exchange mechanism further includes a temperature sensor, a temperature sensor for monitoring the internal temperature is provided at the top of the equipment cavity, and a PID controller is provided on the upper middle part of one side of the inner wall of the heat exchange cavity.

[0016] Working Principle: When the heat exchange cabinet is in use, the filtration and drying mechanism is activated first. During the heat exchange process, air from the external environment first enters the outer casing through the ventilation filter grille. As the air enters through the ventilation filter grille, it initially removes dust and impurities, ensuring the cleanliness of the air entering the outer casing. Then, the pre-filtered air, guided by the internal and external circulation fans of the heat exchange chamber, enters the ventilation duct. There, it is further filtered by the activated carbon filter in the mounting base inside the outer casing to remove residual dust, impurities, and moisture, thus preventing residual dust and moisture from remaining in the air. Dust buildup can clog the airflow channels in the ventilation ducts, while also preventing moisture in the air from condensing due to temperature drops, or even freezing and blocking or damaging the ducts. After undergoing multiple treatments, the air flows through the ventilation ducts into the heat exchange seat inside the cabinet for heat exchange. After heat exchange inside the cabinet, the air returns through the exhaust pipe to the mounting base at the rear of the outer casing. The air remaining in the rear mounting base is then propelled by the continuously returning air through a hollow duct to the front exhaust seat, where it is discharged. Because the air returning through the exhaust pipe has a higher temperature due to heat exchange, the air inside the hollow duct... During airflow, heat from the air is dispersed through the hollow duct wall into the activated carbon filter seat of the mounting base. This dries and evaporates the moisture trapped in the incoming air, ensuring continuous filtration and drying of the air before it enters the heat exchange cabinet. When the density adjustment mechanism starts, the heat exchange cabinet is affected by the temperature difference in the external environment. At this point, the heat generated in the equipment cavity due to the external environment is insufficient to affect the normal operation of the entire cabinet. If heat exchange were performed using the original airflow as before, the equipment inside the cavity would be affected by the low temperature, leading to startup failures or even damage. Therefore, when the temperature sensor inside the equipment cavity detects that the temperature data is close to or below the threshold set by the operator, the PID controller inside the heat exchange cavity will control multiple electromagnet seats in the storage base within the limiting groove to start one by one from the bottom. When the electromagnet seat on the bottom hollow stacked seat is activated, the power supply to the electromagnet seat on the bottom hollow stacked seat is cut off, thus losing its magnetism. Therefore, the bottom hollow stacked seat in the storage base, in a stacked state, slides down within the limiting groove under the influence of gravity, thereby blocking the uppermost row of gas flow channels on the ventilation pipe. Similarly, when the temperature inside the equipment cavity does not require heat exchange treatment, the PID controller will control all the electromagnet seats in the storage base to lose their power and magnetism.This allows the hollow stacked seats, which are in a stacked state within the storage base, to fully unfold and slide down. By altering the arrangement of the gas flow channels within the ventilation ducts and the air intake density, the amount of air entering the heat exchange base is controlled. This ensures the cabinet can operate normally under varying external temperature conditions, thus adjusting the air exchange density and volume of the heat exchange cabinet at different temperatures. Under extreme temperature differences, the dual-effect adjustment mechanism activates. During normal operation, the external heat exchange gas circulates under the guidance of an external circulation fan within the heat exchange chamber, while the internal heat exchange gas circulates under the guidance of an internal circulation fan within the heat exchange chamber. When air from the external chamber enters through the ventilation ducts and the surrounding soil temperature... When heat exchange occurs in the heat exchange seat within the heat exchange chamber, the air temperature is insufficient to cool the high-temperature gas circulating within the equipment chamber in a short time. At this point, the amount of external air intake can be increased. For example, all the electromagnet seats in the receiving seat within the connecting box can be energized to ensure full flow of gas in the ventilation pipes. This increases the airflow for rapid heat exchange and cooling. If this method still fails to achieve rapid cooling, the circulating cooling pump on the connecting box is activated. Simultaneously, the circulating cooling pump pumps and circulates the coolant in the liquid storage chamber within the connecting box and in the capillary tubes within the ventilation pipes, cooling the coolant during this circulation process. This design, combined with the increased contact area between the air exchanger and the soil via conductive seats on the ventilation duct, enhances the cooling effect on the air flowing through the duct. This ensures efficient heat exchange for subsequent air entering the heat exchanger. This passive-active dual-effect regulation ensures the heat exchanger operates normally and effectively in environments with large temperature differences or extreme temperatures. In application scenarios with large diurnal temperature variations and drastic climate fluctuations, such as in Xinjiang and Northwest China, the energy-saving exchange mechanism activates. Under normal operating conditions, the air heated by the electrical components within the equipment cavity is drawn into the hot air chamber of the heat exchanger by the internal circulation fan. After heat exchange, the air returns to the equipment cavity through the three-way pipe for recirculation. At this time, the three-way solenoid valve adjusts the conduction state of the three-way pipe to connect the hot air chamber and the equipment chamber. When in energy-saving heat exchange mode, the three-way solenoid valve adjusts the conduction state of the three-way pipe to connect the hot air chamber and the phase change chamber. When the heated air drawn by the internal circulation fan enters the hot air chamber in the heat exchange seat, the curved flow channel formed by the baffle and conduction plate in the hot air chamber greatly slows down the flow speed of the heated air. At the same time, when the cold air in the gas flow channel in the ventilation pipe is drawn into the cold air chamber in the heat exchange seat by the external circulation fan, it flows in the main flow channel in the cold air chamber. At this time, the heat in the heated air in the curved flow channel in the hot air chamber is conducted into the main flow channel and absorbed by the cold air there, causing the airflow to heat up.Then, as the air flows within the main flow channel, it is influenced by the annular channels on both sides, causing it to continuously branch and generate opposing currents and vortices within the main flow channel. This reduces the airflow velocity within the cold air chamber, making it easier for the heat from the heated air in the hot air chamber to be absorbed by the airflow in the cold air chamber. After sufficient heat exchange, the cold air in the cold air chamber is discharged through the exhaust pipe, ensuring sufficient heat exchange between the heated air in the hot air chamber and the cold air in the cold air chamber. After sufficient heat exchange, the heated gas in the hot air chamber is then discharged into the phase change chamber through the three-way pipe. During the process, the gas discharged into the phase change cavity still carries a certain amount of residual heat. As this heat-carrying gas flows through the curved flow channel composed of a conduction plate and a baffle plate within the phase change cavity, the residual heat in the gas contacts the phase change energy storage material block inside the conduction plate through contact holes. Upon contact with this residual heat, the phase change energy storage material block undergoes a phase change, transforming from a solid to a liquid state, and rapidly storing the residual heat from the gas. This allows the gas, after being processed by the phase change cavity, to flow through the connecting... The cooling effect is better when the air flows back into the equipment cavity. This stage does not affect the heat dissipation efficiency of the original heat exchange cabinet and reduces the temperature of the directly emitted hot air, minimizing the thermal impact on the surrounding environment. In areas like Northwest China where nighttime temperatures drop sharply, the hollow stacked base in the connecting box is fully extended. During this process, heat exchange is no longer needed to ensure the normal operation of the cabinet. Instead, the air in the equipment cavity needs to be heated to a suitable temperature before being circulated back into the equipment cavity to prevent equipment failure due to low-temperature startup. At this time, the outside temperature is lower than the phase change temperature of the phase change energy storage material block, causing the material to undergo a reverse phase change, solidifying from a liquid state. During this process, it continuously releases the stored latent heat. When the air circulating from the hot air cavity into the phase change cavity flows through the area surrounding the phase change energy storage material block in the conduction plate, the air is heated by the heat released by the phase change energy storage material block before entering the equipment cavity, thus ensuring the normal operation of the equipment inside. This achieves energy-saving heat exchange in special environments.

[0017] This invention provides an underground energy-saving heat exchange cabinet with adjustable ventilation pipe density. It has the following beneficial effects: 1. By adding and setting a filtration and drying mechanism, this invention enables the heat exchange cabinet to effectively trap dust and impurities in the outside air through the dual filtration of the ventilation filter grille and the activated carbon filter seat during operation. This prevents dust accumulation from clogging the gas flow channels in the ventilation duct and ensures smooth airflow. On the other hand, the activated carbon filter seat can effectively remove moisture from the air, preventing moisture from condensing or freezing in the flow channel due to temperature changes, thus avoiding pipe blockage and damage. At the same time, the residual heat of the gas returning after heat exchange dries the trapped moisture in the activated carbon filter seat, maintaining its continuous and stable filtration and drying efficiency, and providing a clean and dry airflow basis for subsequent heat exchange.

[0018] 2. By adding and setting a density adjustment mechanism, this invention can accurately respond to changes in the equipment cavity temperature during the operation of the heat exchange cabinet through the linkage of temperature sensors and PID controllers. It can also adjust the air density of the gas flow channel in the ventilation pipe by controlling the expansion and contraction of the hollow stacked seat. Furthermore, it can flexibly control the amount of air entering the heat exchange seat. When the external temperature difference affects the heat of the equipment cavity and is insufficient, the air exchange volume is reduced to avoid the equipment from starting failure or damage due to low temperature. When heat exchange is not required, the flow channel is completely closed to achieve dynamic adaptation of the air exchange volume. This ensures that the cabinet can operate normally under different temperature conditions and reduces the energy loss from ineffective heat exchange.

[0019] 3. By adding and setting a dual-effect adjustment mechanism, this invention enables the heat exchange cabinet to operate in two ways. First, the mechanism can increase the air exchange volume through the passive adjustment of the density adjustment mechanism to achieve rapid heat exchange and cooling, adapting to general temperature difference scenarios. Second, under extreme temperature difference conditions, it can start the circulating cooling pump to drive the coolant to circulate in the capillary tube. Combined with the increased contact area with the soil by the conduction seat, it actively enhances the cooling effect on the incoming airflow, forming a passive and active dual-effect adjustment mode. This treatment method can effectively solve the problem of insufficient cooling of a single heat exchange mode under extreme temperature conditions, ensure stable heat exchange effect, and guarantee the normal operation of the cabinet under excessive temperature difference or extreme temperature.

[0020] 4. By adding and setting up an energy-saving exchange mechanism, this invention can not only construct a curved flow channel through the baffle plate and the annular channel to slow down the airflow velocity and promote full heat exchange between the hot and cold air chambers, thus improving heat exchange efficiency, but also utilize phase change energy storage material blocks to recover residual heat in the hot air. When the temperature drops sharply at night, the stored latent heat is released to heat the circulating air, preventing equipment failure due to low temperature. This treatment method not only realizes the recovery and reuse of waste heat and reduces energy loss, but also stabilizes the equipment chamber temperature and reduces the impact of ambient temperature fluctuations on the equipment. It is suitable for special climate scenarios with large day-night temperature differences, such as in Northwest China, and improves the energy efficiency and environmental adaptability of the cabinet. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the front planar structure of the present invention; Figure 2 This is a schematic diagram of the rear structure of the present invention; Figure 3 This is a cross-sectional view of the internal structure of the cabinet of the present invention; Figure 4 This is a cross-sectional view of the internal structure of the outer casing of the present invention; Figure 5 This is a cross-sectional schematic diagram of the internal structure of the heat exchanger base of the present invention; Figure 6 This is a cross-sectional schematic diagram of the internal structure of the conductive plate of the present invention; Figure 7 This is a cross-sectional schematic diagram of the internal structure of the cooling chamber of the present invention; Figure 8 This is a partial structural diagram of the external connector of the present invention; Figure 9 This is a cross-sectional view of the internal structure of the connecting box of the present invention; Figure 10 This is a schematic diagram of the storage base in its unfolded state according to the present invention; Figure 11 This is a schematic diagram of the hollow stacked seat structure of the present invention.

[0022] The components include: 1. Cabinet; 2. Balance support; 3. Ventilation duct; 4. Conductor seat; 5. Circulating cooling pump; 6. Connection box; 7. External box; 8. Ventilation filter grille; 9. Inspection door; 10. Discharge pipe; 11. Equipment cavity; 12. Heat exchange cavity; 13. Internal circulation fan; 14. External circulation fan; 15. Heat exchange seat; 16. T-shaped pipe; 17. T-shaped solenoid valve; 18. Temperature sensor; 19. PID controller. 20. Discharge seat; 21. External connector seat; 22. Mounting seat; 23. Activated carbon filter seat; 24. Baffle plate; 25. Processing chamber; 26. Conducting plate; 27. Contact hole; 28. Phase change energy storage material block; 29. ​​Main channel; 30. Circular channel; 31. Hollow conduit; 32. Receiving seat; 33. Liquid storage chamber; 34. Limiting groove; 35. Gas flow channel; 36. Capillary tube; 37. Hollow composite seat; 38. Electromagnet seat. Detailed Implementation

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

[0024] Please see the appendix Figure 1- Appendix Figure 2 This invention provides an underground energy-saving heat exchange cabinet with adjustable ventilation pipe density, including a cabinet body 1. Balance supports 2 are provided on both sides of the outer wall of the cabinet body 1 to maintain its balance. The interior of the cabinet body 1 consists of two independent chambers: an equipment chamber 11 and a heat exchange chamber 12. A heat exchange seat 15 is provided inside the heat exchange chamber 12, and the heat exchange seat 15 consists of three independent processing chambers 25, which are arranged from front to back as a phase change chamber, a hot air chamber, and a cold air chamber. The outer box 7 is located on one side of the cabinet 1. The outer box 7 is connected to the cooling chamber inside the heat exchange chamber 12 through the front and rear ventilation pipes 3. Please see the appendix Figure 2 - Appendix Figure 4 and attached Figure 8 The filtration and drying mechanism is located inside the outer box 7 and is used to filter and dry the airflow that is being heated inside the cabinet 1 before it enters. The filtration and drying mechanism includes ventilation filter grilles 8. Multiple sets of ventilation filter grilles 8 are equidistantly arranged on both sides of the outer box 7. An installation seat 22 is provided at the bottom inner side of the outer box 7, and the interior of the installation seat 22 is connected to the interior of the ventilation duct 3. An activated carbon filter seat 23 is provided inside the installation seat 22. Both the cabinet 1 and the outer box 7 are equipped with inspection doors 9.

[0025] When the filtration and drying mechanism is started, during the operation of the heat exchange mechanism, the air in the external environment first enters the interior of the external box 7 through the ventilation filter grille 8 on the external box 7. When the air in the external environment enters through the ventilation filter grille 8, the ventilation filter grille 8 will initially filter out the dust and impurities carried in the air, thereby ensuring the cleanliness of the air entering the interior of the external box 7. In addition, the staff can regularly inspect the cabinet 1 and the equipment inside the external box 7 through the maintenance door 9 to ensure the normal operation of the equipment inside.

[0026] The filtration and drying mechanism also includes an external connector 21. External connectors 21 are provided on both the front and rear sides of the outer wall of the mounting base 22. The two external connectors 21 are connected by multiple sets of hollow conduits 31 arranged at equal intervals. The interiors of the two external connectors 21 are connected by multiple sets of hollow conduits 31. An exhaust seat 20 is provided in the upper middle part of the outer wall of the front external connector 21. The top of the cold air chamber is connected to the interior of the rear external connector 21 through an exhaust pipe 10.

[0027] Then, the air that has undergone preliminary filtration in the outer box 7 is guided by the internal and external circulation fans 14 into the ventilation duct 3 through the heat exchange chamber 12. The activated carbon filter seat 23 in the mounting base 22 in the outer box 7 further filters the residual dust, impurities and moisture in the air after the preliminary filtration, thereby preventing the accumulation of residual dust in the air from clogging the gas flow channel 35 in the ventilation duct 3. At the same time, it can also prevent the moisture in the air from remaining in the gas flow channel 35 in the ventilation duct 3 from condensing due to the temperature drop, or even freezing and clogging and damaging the pipe. After multiple treatments, the air enters the heat exchange seat 15 in the cabinet 1 through the gas flow channel 35 in the ventilation duct 3 for heat exchange treatment.

[0028] After heat exchange within the cabinet 1, the air returns through the exhaust pipe 10 to the rear mounting base 22 inside the outer box 7. The air remaining in the rear mounting base 22 is then pushed by the continuously returning gas through the hollow conduit 31 into the front exhaust base 20 and discharged through it. Since the air returning through the exhaust pipe 10 will have an increased temperature due to heat exchange, the heat in the air will also be dispersed through the wall of the hollow conduit 31 into the activated carbon filter seat 23 of the mounting base 22 during the flow process. This will dry and evaporate the moisture trapped in the discharged air in the activated carbon filter seat 23, thereby continuously ensuring the filtration and drying of the incoming air by the activated carbon filter seat 23, thus completing the filtration and drying process of the air before it enters the heat exchange cabinet.

[0029] Please see the appendix Figure 9 - Appendix Figure 11 The density adjustment mechanism is installed on the ventilation duct 3 and is used to adjust the discharge density of the heat exchange airflow entering the internal heat exchange airflow channel of the cabinet 1. The density adjustment mechanism includes a connecting box 6. The ends of the front and rear ventilation pipes 3 are connected through the connecting box 6. Multiple sets of gas channels 35 for external heat exchange airflow are opened at equal intervals inside the ventilation pipes 3. An external circulation fan 14 is provided on one side of the bottom of the heat exchange chamber 12. The external circulation fan 14 inputs the gas in the ventilation pipes 3 into the cold air chamber in the heat exchange seat 15 through the connecting pipe.

[0030] When the density adjustment mechanism is activated, it is because the heat exchange cabinet is affected by the temperature difference of the external environment. At this time, the heat generated in the equipment cavity 11 inside the cabinet 1 due to the influence of the external environment is no longer sufficient to affect the normal operation of the entire cabinet. If the heat exchange process is carried out as before, the equipment in the equipment cavity 11 will be affected by the low temperature, resulting in start-up failure or even damage.

[0031] Therefore, when the temperature sensor 18 in the equipment cavity 11 detects that the temperature data inside is close to or lower than the threshold set by the management personnel, the PID controller 19 in the heat exchange cavity 12 will control the multiple electromagnet seats 38 in the storage seat 32 in the limiting groove 34 to start one by one from the bottom. When the electromagnet seat 38 on the bottom hollow stacked seat 37 is started, the power supply of the electromagnet seat 38 on the bottom hollow stacked seat 37 is cut off and loses its magnetism. Therefore, the bottom hollow stacked seat 37 in the storage seat 32, which is in a stacked state, slides down in the limiting groove 34 under the influence of gravity, thereby blocking the uppermost row of gas flow channels 35 on the ventilation pipe 3.

[0032] The density adjustment mechanism also includes a limiting groove 34. A limiting groove 34 is provided in the middle of the inner side of the connecting box 6, and the limiting groove 34 is arranged in a U-shape. A storage seat 32 is provided on the top of the inner side of the limiting groove 34. Multiple hollow stacked seats 37 are provided in the storage seat 32. Electromagnet seats 38 are provided on both sides of the top of each hollow stacked seat 37, and each set of electromagnet seats 38 is staggered.

[0033] Similarly, when the temperature inside the equipment cavity 11 does not require heat exchange treatment, the PID controller 19 will control all the electromagnet seats 38 inside the storage seat 32 to cut off the power and lose their magnetism, thereby causing all the hollow stacked seats 37 in the stacked state inside the storage seat 32 to unfold and slide down. In this way, by changing the arrangement of the gas flow channel 35 in the ventilation pipe 3, the amount of air entering the heat exchange seat 15 is controlled, so that the cabinet 1 can operate normally under different external temperature conditions, thereby completing the adjustment of the air exchange density and air exchange volume of the heat exchange cabinet under different temperature conditions.

[0034] The electromagnet seats 38 on each hollow stacked seat 37 are staggered to avoid the electromagnet seats 38 causing cross-influence on other hollow stacked seats during use, thereby ensuring the independent use of each level of hollow stacked seat 37 within the storage seat 32.

[0035] Please see the appendix Figure 2 and attached Figure 9 The dual-effect regulating mechanism is installed on the ventilation duct 3 and is used to regulate the temperature of the heat exchange airflow entering the cabinet 1 in a dual-effect manner. The dual-effect regulating mechanism includes a conduction seat 4. Multiple conduction seats 4 are equidistantly arranged in the middle of the outer wall of the ventilation pipe 3. A capillary tube 36 for coolant flow is provided in the ventilation pipe 3, and the capillary tube 36 is connected to the inside of the conduction seat 4. A liquid storage chamber 33 is opened inside the connecting box 6. The inside of the liquid storage chamber 33 is connected to the inside of the capillary tube 36 at the corresponding position. A circulating cooling pump 5 is provided on the top of the connecting box 6. The inlet of the circulating cooling pump 5 is connected to the inside of the liquid storage chamber 33 through a connecting pipe, and the outlet of the circulating cooling pump 5 is connected to the inside of the capillary tube 36 through a connecting pipe.

[0036] When the dual-effect regulating mechanism is activated, during normal operation of the cabinet 1, the circulation of external heat exchange gas is guided by the external circulation fan 14 in the heat exchange chamber 12, and the circulation of internal heat exchange gas is guided by the internal circulation fan 13 in the heat exchange chamber 12. When the air in the external box 7 enters the heat exchange seat 15 in the heat exchange chamber 12 for heat exchange through the ventilation pipe 3 and the surrounding soil temperature treatment, the air temperature is no longer sufficient to cool down the high-temperature gas circulating in the equipment cavity 11 through heat exchange in a short time. At this time, the amount of external air exchange can be increased. For example, the electromagnet seat 38 in the storage seat 32 in the connecting box 6 is fully energized, thereby ensuring the full flow of gas in the ventilation pipe 3 3, and thus achieving rapid heat exchange and cooling by increasing the air flow of the heat exchange air.

[0037] If this treatment method still cannot achieve the purpose of rapid cooling, the circulating cooling pump 5 on the connecting box 6 is started. At the same time as the circulating cooling pump 5 starts, it pumps and circulates the coolant in the liquid storage chamber 33 in the connecting box 6 and the capillary tube 36 in the ventilation pipe 3, and cools the coolant during the circulation process. At the same time, the contact area between the conduction seat 4 on the ventilation pipe 3 and the soil is increased, thereby improving the cooling effect on the air flowing in the gas flow channel 35 in the ventilation pipe 3. This ensures the heat exchange effect of the air in the gas flow channel 35 entering the heat exchange seat 15. Through this passive and active dual-effect regulation method, the normal operation and heat exchange of the heat exchanger are ensured when facing large temperature differences or extreme temperature environments.

[0038] Please see the appendix Figure 3 and attached Figure 5 - Appendix Figure 7 An energy-saving exchange mechanism is installed inside the cabinet 1 to perform energy-saving exchange of residual heat energy after the heat exchange airflow inside the cabinet 1 has undergone heat exchange.

[0039] The energy-saving exchange mechanism includes a main channel 29, which is opened inside the cold air chamber. Circular channels 30 are staggered on both sides of the main channel 29 and connected to it. Multiple baffles 24 are equidistantly arranged on the inner walls of the hot air chamber and the phase change chamber. An internal circulation fan 13 is installed on one side of the bottom of the heat exchange chamber 12. The internal circulation fan 13 inputs the heated gas in the equipment chamber 11 into the hot air chamber for heat exchange through a connecting pipe.

[0040] When the energy-saving exchange mechanism is started, in application scenarios with large day-night temperature differences and drastic climate fluctuations, such as Xinjiang and Northwest China, if it is in normal use, the air heated by the operation of electrical components in the equipment cavity 11 is drawn into the hot air cavity in the heat exchange seat 15 by the internal circulation fan 13 for heat exchange. After heat exchange, it returns to the equipment cavity 11 through the three-way pipe 16 for circulation. At this time, the three-way solenoid valve 17 adjusts the conduction state of the three-way pipe 16 to conduct the hot air cavity and the equipment cavity 11.

[0041] The energy-saving exchange mechanism also includes a three-way pipe 16. A three-way pipe 16 is provided on the top side of the heat exchange seat 15 to connect the three chambers: the phase change chamber, the hot gas chamber, and the equipment chamber 11. A three-way solenoid valve 17 for controlling the gas flow direction is provided at the central intersection of the three-way pipe 16. The bottom of the phase change chamber is connected to the interior of the equipment chamber 11 through a connecting pipe.

[0042] When in energy-saving heat exchange mode, the three-way solenoid valve 17 adjusts the conduction state of the three-way pipe 16 to conduct the hot air chamber and the phase change chamber. At this time, when the heated air drawn by the internal circulation fan 13 enters the hot air chamber in the heat exchange seat 15, the curved flow channel formed by the baffle plate 24 and the conduction plate 26 in the hot air chamber will greatly slow down the flow speed of the heated air in it. At the same time, when the cold air in the gas flow channel 35 in the ventilation pipe 3 is drawn into the cold air chamber in the heat exchange seat 15 by the external circulation fan 14, it flows in the main flow channel 29 in the cold air chamber.

[0043] At this time, the heat in the heated air in the curved flow channel of the hot air cavity is conducted into the main flow channel 29 and absorbed by the cold air inside, causing the airflow to heat up. Then, as the air flows in the main flow channel 29, it is affected by the annular channels 30 on both sides, which causes it to continuously branch and generate convection and vortex inside the main flow channel 29, thereby reducing the flow velocity of the airflow in the cold air cavity. This makes it easier for the heat on the heated air in the hot air cavity to be absorbed by the airflow in the cold air cavity. After sufficient heat exchange, the cold air in the cold air cavity is discharged through the exhaust pipe 10, thus ensuring that the heated air in the hot air cavity and the cold air in the cold air cavity exchange heat fully.

[0044] The energy-saving exchange mechanism also includes conductive plates 26. Multiple conductive plates 26 are equidistantly arranged inside the phase change cavity, with portions of the conductive plates 26 extending into the hot gas cavity. Multiple contact holes 27 are equidistantly arranged on the upper surface of the portion of the conductive plates 26 within the phase change cavity. A phase change energy storage material block 28 is disposed inside the portion of the conductive plates 26 within the phase change cavity. The energy-saving exchange mechanism also includes a temperature sensor 18. A temperature sensor 18 for monitoring the internal temperature is disposed on the top of the equipment cavity 11, and a PID controller 19 is disposed on the upper middle part of one side of the inner wall of the heat exchange cavity 12.

[0045] After sufficient heat exchange, the heated gas in the hot gas chamber is discharged into the phase change chamber through the three-way pipe 16. The gas discharged into the phase change chamber still carries a certain amount of residual heat. During the flow of the gas carrying residual heat in the curved flow channel composed of the conduction plate 26 and the baffle plate 24 in the phase change chamber, the residual heat in the gas comes into contact with the phase change energy storage material block 28 inside the conduction plate 26 through the contact hole 27. After contacting the residual heat, the phase change energy storage material block 28 undergoes a phase change, changing from a solid to a liquid state, and quickly stores the residual heat in the gas. This makes the cooling effect better when the gas after being processed by the phase change chamber flows back into the equipment chamber 11 through the connecting pipe. This stage will not affect the heat dissipation efficiency of the original heat exchange cabinet, and can also reduce the temperature of the directly discharged hot gas and reduce the thermal impact on the surrounding environment.

[0046] When faced with a sudden drop in nighttime temperatures in regions such as Northwest China, the hollow stacking seat 37 in the storage seat 32 inside the connecting box 6 is in a fully extended state. During this process, it is no longer necessary to ensure the normal operation of the cabinet through heat exchange. Instead, it is necessary to heat the air in the equipment cavity 11 inside the cabinet 1 to a suitable temperature and then circulate it into the equipment cavity 11 to avoid equipment failure due to low temperature.

[0047] At this time, the outside temperature is lower than the phase change temperature of the phase change energy storage material block 28, and the material undergoes a reverse phase change. The phase change energy storage material block 28 solidifies from a liquid state to a solid state. During this process, it will continuously release the stored latent heat. When the air circulating from the hot air chamber into the phase change chamber flows through the area around the phase change energy storage material block 28 in the conduction plate 26, the air is heated by the heat released by the phase change energy storage material block 28. After the air is heated, it enters the equipment chamber 11, thereby ensuring the normal operation of the equipment in the equipment chamber 11. This achieves energy-saving heat exchange processing of the heat exchange cabinet in special environments.

[0048] 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 alterations 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 underground energy-saving heat exchange cabinet with adjustable ventilation pipe density, characterized in that, include, The cabinet (1) has balance supports (2) on both sides of its outer wall to maintain its balance. The interior of the cabinet (1) consists of two independent chambers: the equipment chamber (11) and the heat exchange chamber (12). The heat exchange chamber (12) is equipped with a heat exchange seat (15), which is composed of three independent processing chambers (25). The three independent processing chambers (25) are composed of a phase change chamber, a hot gas chamber and a cold gas chamber from front to back. The outer box (7) is located on one side of the cabinet (1). The outer box (7) is connected to the cooling chamber inside the heat exchange chamber (12) through the ventilation pipes (3) in the front and rear sections. The filter and dryer is located inside the outer box (7) and is used to filter and dry the airflow that is being heated inside the cabinet (1) before it enters. The density adjustment mechanism is installed on the ventilation pipe (3) and is used to adjust the discharge density of the heat exchange airflow into the cabinet (1). The dual-effect regulating mechanism is installed on the ventilation duct (3) and is used to perform dual-effect regulation of the temperature of the heat exchange airflow entering the cabinet (1). An energy-saving exchange mechanism is installed inside the cabinet (1) and is used to perform energy-saving exchange of the residual heat energy after the heat exchange airflow inside the cabinet (1) has been exchanged.

2. The underground energy-saving heat exchange cabinet with adjustable ventilation pipe density according to claim 1, characterized in that, The filtration and drying mechanism includes a ventilation filter grille (8). Multiple ventilation filter grilles (8) are equidistantly arranged on both sides of the outer box (7). An installation seat (22) is provided at the bottom of the inner side of the outer box (7), and the interior of the installation seat (22) is connected to the interior of the ventilation duct (3). An activated carbon filter seat (23) is provided inside the installation seat (22). Inspection doors (9) are provided on both the cabinet (1) and the outer box (7).

3. The underground energy-saving heat exchange cabinet with adjustable ventilation pipe density according to claim 2, characterized in that, The filtration and drying mechanism also includes an external connector (21). The front and rear sides of the outer wall of the mounting base (22) are provided with external connectors (21). The two external connectors (21) are connected by multiple sets of hollow conduits (31) arranged at equal intervals. The interiors of the two external connectors (21) are connected by multiple sets of hollow conduits (31). The upper middle part of the outer wall of the front external connector (21) is provided with a discharge seat (20). The top of the cold air chamber is connected to the interior of the rear external connector (21) through a discharge pipe (10).

4. The underground energy-saving heat exchange cabinet with adjustable ventilation pipe density according to claim 1, characterized in that, The density adjustment mechanism includes a connecting box (6), and the ends of the two sections of the ventilation pipe (3) are connected by the connecting box (6). Multiple sets of gas channels (35) for external heat exchange airflow are opened at equal intervals inside the ventilation pipe (3). An external circulation fan (14) is provided on one side of the bottom of the heat exchange chamber (12). The external circulation fan (14) inputs the gas in the ventilation pipe (3) into the cold air chamber in the heat exchange seat (15) through the connecting pipe.

5. An underground energy-saving heat exchange cabinet with adjustable ventilation pipe density according to claim 4, characterized in that, The density adjustment mechanism also includes a limiting groove (34). The connecting box (6) has a limiting groove (34) in the middle of its inner side. The limiting groove (34) is arranged in a square shape. A storage seat (32) is provided on the top of the inner side of the limiting groove (34). Multiple hollow stacked seats (37) are arranged inside the storage seat (32). Electromagnet seats (38) are provided on both sides of the top of each hollow stacked seat (37). Each set of electromagnet seats (38) is staggered.

6. The underground energy-saving heat exchange cabinet with adjustable ventilation pipe density according to claim 4, characterized in that, The dual-effect regulating mechanism includes a conduction seat (4). Multiple conduction seats (4) are equidistantly arranged in the middle of the outer wall of the ventilation pipe (3). A capillary tube (36) for coolant flow is provided in the ventilation pipe (3), and the capillary tube (36) is connected to the interior of the conduction seat (4). A liquid storage chamber (33) is opened in the interior of the connecting box (6). The interior of the liquid storage chamber (33) is connected to the interior of the capillary tube (36) at the corresponding position. A circulating cooling pump (5) is provided on the top of the connecting box (6). The inlet of the circulating cooling pump (5) is connected to the interior of the liquid storage chamber (33) through a connecting pipe. The outlet of the circulating cooling pump (5) is connected to the interior of the capillary tube (36) through a connecting pipe.

7. The underground energy-saving heat exchange cabinet with adjustable ventilation pipe density according to claim 1, characterized in that, The energy-saving exchange mechanism includes a main channel (29), and the inside of the cold air chamber is provided with a main channel (29). On both sides of the main channel (29), there are intersecting annular channels (30) connected to it. Multiple baffles (24) are provided at equal intervals on the inner walls of the hot air chamber and the phase change chamber. An internal circulation fan (13) is provided on one side of the bottom of the heat exchange chamber (12). The internal circulation fan (13) inputs the heated gas in the equipment chamber (11) into the hot air chamber for heat exchange through the connecting pipe.

8. The underground energy-saving heat exchange cabinet with adjustable ventilation pipe density according to claim 7, characterized in that, The energy-saving exchange mechanism also includes a three-way pipe (16). A three-way pipe (16) is provided on one side of the top of the heat exchange seat (15) to connect the three chambers of the phase change chamber, the hot gas chamber and the equipment chamber (11). A three-way solenoid valve (17) for controlling the direction of gas flow is provided at the center intersection of the three-way pipe (16). The bottom of the phase change chamber is connected to the inside of the equipment chamber (11) through a connecting pipe.

9. An underground energy-saving heat exchange cabinet with adjustable ventilation pipe density according to claim 8, characterized in that, The energy-saving exchange mechanism also includes a conductive plate (26). Multiple conductive plates (26) are equidistantly arranged inside the phase change cavity, and a portion of the conductive plate (26) extends into the interior of the hot gas cavity. Multiple contact holes (27) are equidistantly arranged on the upper surface of the portion of the conductive plate (26) inside the phase change cavity. A phase change energy storage material block (28) is arranged inside the portion of the conductive plate (26) inside the phase change cavity.

10. An underground energy-saving heat exchange cabinet with adjustable ventilation pipe density according to claim 9, characterized in that, The energy-saving exchange mechanism also includes a temperature sensor (18). A temperature sensor (18) for monitoring the internal temperature is provided on the top of the equipment cavity (11), and a PID controller (19) is provided on the upper part of one side of the inner wall of the heat exchange cavity (12).

Images