Integrated multi-mode cooling unit, automatic adjusting method and electrical room

Abstract

The invention relates to an integrated multi-mode cooling unit, an automatic adjusting method and an electrical room, the integrated multi-mode cooling unit comprises a unit body, condenser cooling equipment used for cooling a condenser, hot air cooling equipment used for cooling hot air and a control module, and the unit body is provided with an air temperature adjusting cavity; the condenser cooling device and the hot air cooling device are arranged in the machine body, the hot air cooling device comprises at least two sets of refrigeration modules, an evaporator of each set of refrigeration module is arranged in an air temperature adjusting cavity, a hot air inlet is formed in the top of the air temperature adjusting cavity, and a cold air outlet is formed in the side wall of the air temperature adjusting cavity; the unit is provided with a first cooling module (cold water cooling) and a second cooling module (cold air cooling), so that free switching between an air cooling mode and an air cooling and water cooling combined mode is realized. No matter in a high-temperature and water-deficient environment or in a low-temperature and water-cooling-free condition, the unit can operate stably, and the applicability is remarkably improved.

Description

Technical Field

[0001] The invention relates to an integrated multi-mode cooling unit, an automatic adjustment method and an electrical room. Background Art

[0002] With the rapid development of industrial production, high-power electrical equipment such as high-voltage inverters, SVG (static var generator), SVC (static var compensator) are increasingly used in various fields. However, since these devices generate a lot of heat during operation, the management of the equipment operating environment temperature is particularly important. Studies have shown that the operating environment temperature of electrical equipment directly affects the service life and operating performance of its core components such as capacitors, IGBTs, circuit boards and transformers. According to industry standards, the suitable operating environment temperature range for electrical equipment is usually +5℃ to 40℃, among which the equipment operating temperature is controlled in the range of 26℃ to 30℃, which is more conducive to the stability and reliability of the equipment. At the same time, every time the operating environment temperature is reduced by 10℃, the service life of electrical equipment can be doubled, and the failure rate will also be greatly reduced.

[0003] At present, in order to reduce the temperature of the operating environment of electrical equipment and improve the heat dissipation and cooling effect, the existing technology has proposed a variety of cooling solutions, including direct exhaust, indoor air conditioning, air-water cooling equipment, water source cooling units and pure water cooling systems. However, these traditional cooling solutions have certain limitations in practical applications:

[0004] 1. Direct exhaust and indoor air conditioning cooling method:

[0005] This type of cooling method has been gradually eliminated due to its high energy consumption and limited cooling effect, and is still used only in a few special scenarios.

[0006] 2. Pure water cooling system:

[0007] The scope of use of this type of cooling solution is limited and cannot meet a wide range of application scenarios.

[0008] 3. Air-water cooling equipment:

[0009] The cooling effect of air-water cooling equipment is limited by the temperature of the cooling circulating water provided on site. Especially in high water temperature environments or high temperature seasons, the cooling capacity of air-water cooling equipment is significantly reduced, resulting in a weakened heat dissipation effect of equipment such as inverters, affecting their operating stability.

[0010] 4. Water source cooling unit:

[0011] The operating efficiency of the water source cooling unit is closely related to the supply temperature of the circulating water. The circulating water temperature provided on site cannot be higher than 40°C, and the general standard water temperature is ≤32°C. As the supply water temperature increases, the refrigeration efficiency of the equipment decreases significantly. In addition, if there is a lack of suitable large-scale industrial circulating water in the application scenario, the feasibility of this solution will also be limited.

[0012] Therefore, the cooling solutions of the existing technology have certain limitations when dealing with diverse usage environments, especially water shortage or excessively high cooling water temperature, and unstable on-site water replenishment (such as short-term water outage, severe cold and freezing), and it is difficult to meet the needs of modern industrial production for efficient heat dissipation. Summary of the invention

[0013] The first object of the present invention is to provide an integrated multi-mode cooling unit that can flexibly switch cooling modes according to environmental conditions.

[0014] The second object of the present invention is to provide a method for automatically adjusting a cooling mode with good energy-saving effect.

[0015] The third object of the present invention is to provide a method for automatically adjusting the number of refrigeration module startups with good energy-saving effect.

[0016] A fourth object of the present invention is to provide an electrical room with good energy saving and cooling effects.

[0017] The fifth object of the present invention is to provide an electrical room with good energy saving and cooling effects.

[0018] The first object of the present invention is achieved by:

[0019] An integrated multi-mode cooling unit comprises a machine body, a condenser cooling device for cooling a condenser, a hot air cooling device for cooling hot air, and a control module, wherein the machine body is provided with an air temperature regulating chamber;

[0020] The condenser cooling device and the hot air cooling device are arranged in the machine body, the hot air cooling device includes at least two groups of refrigeration modules, the evaporator of each group of refrigeration modules is placed in the air temperature regulating chamber, the top of the air temperature regulating chamber is provided with a hot air inlet, and the side wall of the air temperature regulating chamber is provided with a cold air outlet;

[0021] The condenser of each group of refrigeration modules is placed in the condenser cooling device;

[0022] The condenser cooling device is built with a first cooling module that uses cold water to cool the condenser and a second cooling module that uses cold air to cool the condenser, the first cooling module, the second cooling module and the refrigeration module are electrically connected to the control module respectively, and the control module controls the second cooling module to start alone or the first cooling module and the second cooling module to start at the same time;

[0023] The control module starts a preset number of refrigeration modules and starts the second cooling module, and the external hot air enters the air temperature adjustment chamber along the hot air inlet, the evaporator cools the hot air to form cold air and is discharged to the cold air outlet, and the second cooling module uses the cold air to cool the condenser;

[0024] The control module starts a preset number of refrigeration modules and starts the first cooling module and the second cooling module. The external hot air enters the air temperature regulating chamber along the hot air inlet, the evaporator cools the hot air to form cold air and is discharged to the cold air outlet. The first cooling module uses cold water to cool the condenser, and the second cooling module uses cold air to cool the condenser.

[0025] The unit is equipped with a first cooling module (cold water cooling) and a second cooling module (cold air cooling) to achieve free switching between air cooling mode and air cooling and water cooling combined mode. Whether in a high temperature and water-deficient environment or in a low temperature and water-free environment, the unit can operate stably, significantly improving its applicability.

[0026] The evaporator of the refrigeration module is arranged in the air temperature adjustment chamber, which can efficiently cool the incoming hot air to form cold air, thereby providing a suitable operating environment for high-power electrical equipment. Combined with the dual-mode cooling of the condenser cooling device, the overall heat dissipation effect is further enhanced, ensuring the reliable operation of the equipment.

[0027] The control module flexibly starts a preset number of refrigeration modules according to actual needs and dynamically selects the cooling mode. When the cooling demand is low, only the second cooling module can be started (air cooling mode), and when the cooling demand is high, the first and second cooling modules can be started at the same time (air cooling and water cooling combined mode), realizing precise energy consumption management and reducing operating costs.

[0028] The refrigeration modules are designed to be at least two groups with independence and redundancy, ensuring that when a group of refrigeration modules fails, the other modules can still work normally, ensuring the continuity of the unit operation without affecting the heat dissipation requirements of equipment such as the inverter.

[0029] The unit integrates the hot air cooling equipment and the condenser cooling equipment into one body. The internal layout is compact and reasonable, which is convenient for transportation, installation and maintenance, reduces system complexity and improves project implementation efficiency.

[0030] In scenarios where water cooling is not required, water-saving operation can be achieved by starting the second cooling module (air cooling) separately, reducing dependence on water resources and energy consumption, thereby meeting energy-saving and environmental protection requirements.

[0031] The present invention can be applied to a variety of complex working conditions such as water shortage, high temperature, low temperature, etc., and can maintain normal operation, especially under special circumstances such as short-term water outage or severe cold and ice, breaking through the limitations of traditional cooling technology on external conditions.

[0032] The integrated multi-mode cooling unit of the present invention achieves efficient, stable and energy-saving heat dissipation through dual-mode cooling, intelligent control and modular design. It is particularly suitable for the heat dissipation needs of high-power electrical equipment such as inverters, and provides a strong technical guarantee for the long-term reliable operation of the equipment.

[0033] The first object of the present invention can also be solved by the following technical measures:

[0034] Furthermore, the condenser cooling device further comprises a cooling bin, the first cooling module comprises a spray device, a packing layer and a circulating water pump, and the second cooling module comprises a fan and air inlet louvers;

[0035] The top of the cooling bin is provided with an air outlet, the bottom of the cooling bin is provided with a water collection pool, and the cooling bin is provided with a water supply inlet connected to the outside, a cooling circulation water inlet, a circulation water outlet, a drainage outlet for sewage discharge during cleaning, and an overflow outlet;

[0036] The spray device is arranged inside the cooling bin, and comprises at least one spray pipe and a plurality of spray heads, wherein the spray pipe is connected to the cooling circulation water inlet and is used to uniformly spray water into the cooling bin;

[0037] The packing layer is arranged below the spray device to increase the contact area between water and air and promote heat exchange;

[0038] The fan is arranged at the air outlet on the top of the cooling bin, and is used to drive the air to flow so that the air passes through the packing layer from bottom to top;

[0039] The lower part of the cooling bin is provided with an air inlet for introducing cold air, and the air inlet is provided with an air inlet louver, and the louver of the air inlet louver is tilted, and the louver can guide water to flow toward the water collection pool, and the tilted louver is designed to prevent water from splashing out of the water collection pool;

[0040] The circulating water outlet and the replenishing water source inlet are connected to the water collection tank;

[0041] The inlet of the circulating water pump is connected to the circulating water outlet, and the outlet of the circulating water pump is connected to the cooling circulating water inlet;

[0042] The condenser of each group of refrigeration modules is placed in the cooling bin;

[0043] The circulating water pump and the fan are electrically connected to the control module respectively, and the control module controls the start and stop of the circulating water pump and the fan.

[0044] The control module starts the second cooling module, the fan starts, and the outside cold air enters through the air inlet of the cooling chamber, and after heat exchange with the condenser coil, it becomes hot air and is discharged through the air outlet. In this process, the outside cold air exchanges heat with the condenser and takes away heat, and the cycle repeats;

[0045] The control module starts the first cooling module, and the small holes of the spray head evenly spray low-temperature water on the packing layer to form a small molecule water film, which is evenly sprinkled on the coil surface of the condenser, exchanges heat with the condenser to take away heat and reduce the temperature of the condenser. In this process, the low-temperature water exchanges heat with the condenser to take away heat, and the cycle repeats;

[0046] When the control module starts the first cooling module and the second cooling module at the same time, the outside cold air exchanges heat with the condenser to take away heat, and the cycle is repeated. The low-temperature water exchanges heat with the condenser to take away heat, and the cycle is repeated. In the process of falling, the water droplets after heat exchange encounter the outside cold air coming in through the air inlet of the cooling bin for heat exchange. The rising air flow driven by the top fan slows down the falling speed of the water droplets, thereby improving the cooling effect of the hot water. The cooled water droplets flow into the water collection pool, and the circulating water pump transports the low-temperature water in the water collection pool along the cooling circulation water inlet and the spray pipe to each spray head. The spray head sprays low-temperature water into the cooling bin, and the cycle is repeated.

[0047] During this process, the outside cold air can exchange heat with the condenser alone to remove heat, or it can exchange heat with the condenser through the water cooling system of the first cooling module at the same time to remove heat, which is more efficient and has a better cooling effect.

[0048] The first cooling module sprays low-temperature water through the spray device to directly contact the condenser for heat exchange. At the same time, the setting of the packing layer greatly increases the contact area between water and air, further enhancing the cooling effect. The circulating water pump continuously extracts hot water for circulating spraying, gradually reducing the water temperature and achieving efficient cooling.

[0049] The second cooling module uses a fan to drive air flow, so that the cold air circulates inside the cooling chamber and exchanges heat with the hot water in the condenser and water collection tank respectively. Through the synergistic effect of air cooling and water cooling, not only the condenser temperature is effectively reduced, but also the water temperature in the water collection tank is further reduced, providing a more stable heat exchange capacity for the cooling system.

[0050] The design of the cooling chamber combines the top air outlet and the bottom air inlet to form a through-type airflow channel, ensuring smooth cooling air flow, avoiding local heat accumulation, and optimizing the heat exchange path between water and air. The connection design between the water collection pool and the water supply inlet and the circulating water pump ensures the continuous replenishment and circulation of the water source, ensuring the stability and continuity of the cooling system operation.

[0051] The control module can flexibly start the first cooling module and the second cooling module and adjust the operation mode according to the actual cooling demand. In low temperature environment or when water resources are insufficient, the air cooling mode can be started alone; in high temperature environment, water cooling and air cooling can be started in coordination to maximize cooling efficiency and save resources, meeting the requirements of energy conservation and emission reduction.

[0052] The cooling chamber is designed with both water cooling and air cooling functions. Regardless of whether it is in a water-scarce environment or in an extreme change in external temperature (such as severe cold and ice or high temperature and high humidity), it can maintain stable operation of the equipment, avoid equipment overheating due to limited cooling capacity in a single mode, and further ensure the normal operation of high-power electrical equipment such as inverters.

[0053] The closed-loop design of the water collection tank and the spray device realizes the recycling of cooling water and avoids the waste of water resources; the heat exchange enhancement effect of the packing layer reduces the demand for cooling water; the air cooling mode further reduces the dependence on water resources and realizes the efficient use of resources.

[0054] In summary, the present invention provides an efficient, energy-saving and highly adaptable cooling solution through design optimization of the cooling bin and its modules. It is particularly suitable for the operating environment of high-power electrical equipment such as frequency converters, and provides reliable guarantee for the long-term stable operation of the equipment, while reducing operating costs and resource consumption.

[0055] Further, the machine body is divided into a first cavity and a second cavity, the first cavity and the second cavity are arranged side by side, and the first cavity forms the cooling chamber;

[0056] The second cavity is divided into the air temperature regulating cavity and the equipment installation cavity, and the air temperature regulating cavity is located above the equipment installation cavity;

[0057] The compressor of each refrigeration module is placed in the equipment installation cavity.

[0058] The machine body rationally divides the internal space into the first cavity and the second cavity. The first cavity is specially used for the layout of the cooling chamber, while the second cavity contains the air temperature adjustment cavity and the equipment installation cavity. This design effectively saves space, ensures a compact layout of the equipment, facilitates installation and maintenance, and improves the overall structural stability of the machine body.

[0059] Furthermore, it also includes a frame, and the evaporators of each group of refrigeration modules are stacked in the frame to form an evaporator module. The evaporator module is placed obliquely in the wind temperature regulating chamber, and the external hot air enters the wind temperature regulating chamber along the hot air inlet. The evaporators of each group of refrigeration modules can contact the hot air for heat exchange.

[0060] The evaporator of each refrigeration module adopts a stacked design and is placed in the frame, tilted in the air temperature adjustment chamber, so that the contact area between the evaporator and the hot air is maximized. After the external hot air enters the air temperature adjustment chamber through the hot air inlet, it can more evenly contact the evaporator of each refrigeration module, improving the heat exchange efficiency and ensuring that the cold air is generated more evenly and effectively.

[0061] The stacked layout design of the evaporator module allows the evaporator of each refrigeration module to fully contact the hot air. This structure not only increases the heat exchange area, but also improves the overall heat exchange efficiency. More efficient heat exchange reduces energy loss, reduces system energy consumption, and helps achieve energy-saving goals.

[0062] The second object of the present invention is achieved by:

[0063] A method for automatically adjusting a cooling mode, further comprising an ambient temperature sensor, wherein the ambient temperature sensor is electrically connected to the control module;

[0064] The ambient temperature sensor is arranged on the machine body to monitor the external ambient temperature T2. The control module dynamically adjusts the cooling mode of the condenser by receiving the temperature status data of the ambient temperature sensor data. The cooling mode includes:

[0065] First mode: air cooling is the main mode, and only the second cooling module is started;

[0066] The second mode: air cooling and water cooling combined mode, the first cooling module and the second cooling module are started at the same time;

[0067] The control module switches the cooling mode according to the following conditions:

[0068] When the external environment temperature T2 is lower than the set threshold value T1, the first mode is started;

[0069] When the external environment temperature T2 is higher than the set threshold T1, the second mode is activated.

[0070] The ambient temperature sensor monitors the external ambient temperature T2 in real time, and the control module automatically adjusts the cooling mode according to the temperature change. When the external temperature is low, the system adopts a cooling mode dominated by air cooling, and only starts the second cooling module, avoiding unnecessary water cooling energy consumption; when the external temperature is high, the system switches to a combination of air cooling and water cooling, and starts the first and second cooling modules at the same time to provide a stronger cooling effect. Such dynamic adjustment greatly improves energy efficiency and reduces unnecessary energy waste.

[0071] The automatic switching cooling mode is dynamically adjusted according to the changes in ambient temperature, ensuring that the system can always maintain efficient cooling under different working conditions. Whether in hot summer or cold winter, the system can intelligently adjust according to the external temperature to ensure stable operation of the equipment in any environment.

[0072] The dynamically adjusted cooling mode effectively avoids over-cooling or under-cooling, and avoids adverse effects on the equipment due to inappropriate cooling methods, thereby extending the service life of the equipment, especially the condenser and other key components, reducing the failure rate and improving the reliability of the system.

[0073] The present invention enables the system to automatically select the most suitable cooling mode according to the outside temperature, greatly improving the adaptability of the system to environmental changes. No matter what climatic conditions the user operates the device under, the device can be ensured to work stably, with stronger adaptability and a wider range of use.

[0074] The automatically adjusted cooling mode reduces the need for users to intervene in device settings during system use. Users do not need to manually adjust the device's cooling mode according to the ambient temperature, which greatly improves ease of use and user experience.

[0075] Through intelligent control of temperature regulation, the system starts the water cooling module only when necessary, which not only improves the cooling efficiency, but also reduces the use time of the water cooling part, reduces the system's water consumption, further achieves the goal of water and energy saving, and reduces overall operating costs.

[0076] In summary, the cooling mode automatic adjustment method of the present invention dynamically adjusts the cooling mode of the condenser, fully considering the changes in the external ambient temperature, so that the system optimizes energy usage while ensuring efficient cooling, improves the intelligence, adaptability and reliability of the system, and has good energy-saving effects and low maintenance costs.

[0077] The second object of the present invention can also be solved by the following technical measures:

[0078] Furthermore, the T1 is 30°C.

[0079] The third object of the present invention is achieved by:

[0080] A method for automatically adjusting the startup quantity of a refrigeration module, further comprising a first temperature sensor and a second temperature sensor, wherein the first temperature sensor and the second temperature sensor are electrically connected to a control module respectively;

[0081] The first temperature sensor is installed at the hot air inlet on the top of the machine body, and is used to measure the hot air temperature T3 entering the air temperature regulating chamber;

[0082] The second temperature sensor is installed at the cold air outlet of the air temperature regulating chamber, and is used for the cold air temperature T4 after cooling;

[0083] Step 1: Calculate the temperature difference ΔT between the hot air inlet temperature and the cold air outlet temperature A =T3-T4;

[0084] Step 2: Calculate the temperature difference ΔT between the cold air outlet temperature and the ambient temperature B =T4-T2;

[0085] Step 3: Set the target temperature difference threshold ΔT C and the ambient temperature difference threshold ΔT D ;

[0086] In the first mode:

[0087] When ΔT A <ΔT C When , the control module reduces the number of running refrigeration modules by 1;

[0088] When ΔT A >ΔT C When , the control module increases the number of running refrigeration modules by 1;

[0089] In the second mode:

[0090] When ΔT A <ΔT C When ΔT B <ΔT D When , the control module reduces the number of running refrigeration modules by 1;

[0091] When ΔT A >ΔT C When ΔT B >ΔT D When the control module increases the number of running refrigeration modules by 1.

[0092] This method can monitor the temperature difference (ΔT) between the hot air inlet and the cold air outlet in real time. A ), and the temperature difference between the cold air outlet and the ambient temperature (ΔT B), dynamically adjusts the number of cooling modules according to the temperature difference information. When the temperature difference is less than the set threshold, the system will reduce the number of cooling modules to avoid unnecessary energy consumption; conversely, when the temperature difference is large, the system will increase the number of cooling modules to ensure the cooling effect. This intelligent adjustment optimizes energy use, avoids overcooling, and achieves energy saving.

[0093] By using the temperature difference (ΔT A , ΔT B ) Adjusting the number of cooling modules can ensure that the cooling effect always matches the equipment requirements. Regardless of the external ambient temperature fluctuations or system load changes, the cooling effect can be accurately controlled to prevent overcooling or overheating, ensuring that the system operates in the optimal state.

[0094] By adjusting the number of cooling modules in real time, the system can avoid increasing energy consumption due to unnecessary cooling, thereby effectively reducing power consumption and the operating cost of the cooling system. At the same time, it reduces unnecessary equipment load, extends the service life of the cooling module, and reduces maintenance costs.

[0095] This method can automatically adjust the number of refrigeration modules activated according to the ambient temperature and actual cooling demand, adapting to different working environments and load conditions. Whether in high or low temperature environments, the system can automatically adjust to ensure the stability and consistency of the cooling effect, and improve the system's adaptability and self-regulation ability.

[0096] The system can automatically calculate the temperature difference and adjust the number of cooling modules without human intervention, making the operation more convenient and intelligent. The automated adjustment method reduces the complexity of manual settings, reduces the risk of human error, and improves the reliability and stability of the system.

[0097] Accurate temperature difference calculation and module quantity adjustment not only improve the efficiency of the system, but also reduce the over-operation and load of the refrigeration module, avoiding premature wear and tear of the equipment due to long-term high-load operation. This helps to extend the service life of the equipment and reduce the frequency of equipment replacement.

[0098] To sum up, the method for automatically adjusting the number of refrigeration module startups of the present invention dynamically adjusts the number of refrigeration modules and accurately controls the cooling effect according to actual temperature difference data. It not only optimizes energy usage and improves system operation efficiency, but also reduces operation and maintenance costs and manual intervention. It has significant advantages such as intelligence, energy saving, high efficiency, and reliability.

[0099] The third object of the present invention can also be solved by the following technical measures:

[0100] Furthermore, the temperature difference threshold ΔT C The temperature difference threshold ΔT is 10°C and the ambient temperature D is 5℃.

[0101] The fourth object of the present invention is achieved by:

[0102] An electrical room, the electrical room is used to store electrical equipment, the electrical equipment is arranged in the electrical room, and the side wall of the electrical room is provided with a hot air outlet and a cold air inlet connected to the electrical room;

[0103] The electrical room is provided with an air duct and an air collecting hood, the air collecting hood is arranged in the electrical room and located above the heat dissipation port of the electrical equipment, the air collecting hood is connected with one end of the air duct, the other end of the air duct extends out of the hot air outlet and is connected with the hot air inlet of the air temperature regulating chamber, and the cold air outlet of the air temperature regulating chamber is connected with the cold air inlet;

[0104] The air duct is also provided with an emergency exhaust port, which is located outside the electrical room. An electric emergency exhaust valve is provided at the emergency exhaust port, which controls the opening or closing of the emergency exhaust port.

[0105] The fifth object of the present invention is achieved by:

[0106] An electrical room, the electrical room is used to store electrical equipment, the electrical equipment is arranged in the electrical room, and the side wall of the electrical room is provided with a hot air outlet and a cold air inlet connected to the electrical room;

[0107] It also includes an air duct, the air duct is located outside the electrical room, one end of the air duct is connected to the hot air outlet, the other end of the air duct is connected to the hot air inlet of the air temperature regulating chamber, and the cold air outlet of the air temperature regulating chamber is connected to the cold air inlet;

[0108] The air duct is also provided with an emergency exhaust port, which is located outside the electrical room. An electric emergency exhaust valve is provided at the emergency exhaust port, which controls the opening or closing of the emergency exhaust port.

[0109] Electrical equipment generates heat when working in the electrical room. By setting up a wind collecting cover and placing it above the heat dissipation outlet of the electrical equipment, the hot air can be more effectively concentrated and guided to the air duct. At the same time, the cold air outlet of the air temperature adjustment chamber is connected with the cold air inlet of the electrical room, which can effectively take away the hot air, ensure that the electrical equipment is within a good working temperature range, and avoid equipment damage or performance degradation due to overheating.

[0110] By controlling the flow of hot and cold air, the temperature and humidity in the electrical room can be effectively adjusted, thereby optimizing the working environment of the electrical equipment. The setting of the air temperature adjustment chamber enables the temperature control system in the electrical room to automatically adjust according to demand, avoiding energy waste and improving energy utilization.

[0111] In the event of equipment failure or emergency, the emergency exhaust vents are designed to provide additional ventilation capacity to quickly exhaust hot air and harmful gases. The electric emergency exhaust valve can be quickly opened and closed according to actual needs, ensuring that in an emergency, the temperature in the electrical room drops quickly to avoid safety hazards caused by overheating or other failures.

[0112] The automation function of this design enhances the reliability and stability of the system. By setting up a connecting structure between the air duct and the air temperature adjustment chamber, the temperature and air flow can be adjusted automatically through the control module, reducing the need for manual intervention and improving the operating efficiency and reliability of the system.

[0113] Since the electrical room design can be used in a variety of environments (including emergency situations or special climatic conditions), it can flexibly adjust heat dissipation and exhaust according to the external environment and equipment status. The design of the emergency exhaust port ensures the normal operation of electrical equipment by quickly opening the emergency exhaust system even in abnormal situations (such as refrigeration module failure or indoor equipment environment exceeding the set value), increasing the adaptability and reliability of the electrical room.

[0114] By integrating functions such as ducts, air hoods and exhaust systems, the design of the electrical room not only saves space but also simplifies maintenance. Reasonable exhaust and heat dissipation design can reduce equipment failure rates and reduce equipment maintenance and replacement costs.

[0115] In summary, the electrical room design of the present invention effectively improves the heat dissipation efficiency, safety and system reliability of electrical equipment through innovative structures such as wind collecting hoods, air ducts, wind temperature adjustment chambers, and emergency exhaust vents, while reducing energy waste and manual intervention, and has significant beneficial effects.

[0116] The fifth object of the present invention is achieved by:

[0117] An electrical room, the electrical room is used to store electrical equipment, the electrical equipment is arranged in the electrical room, and the side wall of the electrical room is provided with a hot air outlet and a cold air inlet connected to the electrical room;

[0118] It also includes an air duct, the air duct is located outside the electrical room, one end of the air duct is connected to the hot air outlet, the other end of the air duct is connected to the hot air inlet of the air temperature regulating chamber, and the cold air outlet of the air temperature regulating chamber is connected to the cold air inlet;

[0119] The air duct is also provided with an emergency exhaust port, which is located outside the electrical room. An electric emergency exhaust valve is provided at the emergency exhaust port, which controls the opening or closing of the emergency exhaust port.

[0120] Electrical equipment generates a lot of heat during operation. The design of the air duct and air temperature adjustment chamber helps to efficiently discharge the hot air in the electrical room and keep the operating temperature of the electrical equipment within a safe range. By guiding the cold air and discharging the hot air, the heat dissipation effect of the electrical equipment is enhanced, avoiding damage to the equipment due to overheating, and improving the stability and service life of the equipment.

[0121] The connection structure between the air duct and the air temperature adjustment chamber can automatically adjust the airflow direction and temperature according to environmental conditions, ensuring that the electrical room is always in a suitable temperature and humidity state. This automatic adjustment function not only improves the operating efficiency of electrical equipment, but also enables the system to adapt to working requirements under different climatic conditions, reducing the impact of the external environment on equipment operation.

[0122] The emergency exhaust vent design allows the hot air in the electrical room to be quickly discharged in the event of a sudden failure or overheating of the equipment, thus avoiding equipment failure or safety accidents caused by excessive temperature. The use of an electric emergency exhaust valve can respond quickly, ensuring that the exhaust system can operate normally in an emergency, thereby ensuring the safety of electrical equipment.

[0123] The wind temperature adjustment chamber and air duct system of this design can effectively reduce the temperature in the electrical room without the need for additional energy through an intelligent adjustment mechanism. Through the rational design of ventilation paths and air flow control, the dependence on additional air conditioning equipment is reduced, energy consumption is reduced, and energy conservation and environmental protection are promoted.

[0124] The integration of the induced air duct and emergency exhaust system in the electrical room improves the reliability of the system. Even in special circumstances such as excessively high outside temperature or equipment failure, the system can still work normally, ensuring that the electrical equipment is not affected, ensuring production continuity and stable equipment operation.

[0125] By automatically adjusting the air flow and temperature of the air temperature regulating chamber and the control of the emergency exhaust vent, the need for manual intervention is reduced. The intelligent control function of the electric emergency exhaust valve ensures that the system automatically responds in the event of a failure or abnormality, improving the automation level and efficiency of the entire system.

[0126] This design can effectively save space and simplify equipment maintenance by integrating functions such as the air duct, air temperature adjustment chamber and exhaust system. Reasonable heat dissipation and exhaust design reduce the failure rate of equipment, thereby reducing maintenance frequency and related costs.

[0127] In general, the electrical room design of the present invention effectively improves the heat dissipation effect, safety, energy saving and automation control level of electrical equipment through innovative structures such as air ducts, wind temperature adjustment chambers, and emergency exhaust vents, and has significant beneficial effects.

[0128] The beneficial effects of the present invention are as follows:

[0129] The present invention provides a first cooling module (cold water cooling) and a second cooling module (cold air cooling) to realize the free switching between air cooling mode and air cooling and water cooling combination mode. Whether in a high temperature and water-deficient environment or in a low temperature and water-free environment, the unit can operate stably, significantly improving its applicability.

[0130] In the present invention, the evaporator of the refrigeration module is arranged in the air temperature adjustment chamber, which can efficiently cool the incoming hot air to form cold air, thereby providing a suitable operating environment for high-power electrical equipment. Combined with the dual-mode cooling of the condenser cooling device, the overall heat dissipation effect is further enhanced, ensuring the reliable operation of the equipment.

[0131] In the present invention, the control module flexibly starts a preset number of refrigeration modules according to actual needs and dynamically selects the cooling mode. Under low cooling demand, only the second cooling module can be started (air cooling mode), and under high cooling demand, the first and second cooling modules can be started at the same time (air cooling and water cooling combined mode), so as to achieve precise energy consumption management and reduce operating costs.

[0132] The present invention designs the refrigeration modules into at least two groups, which have independence and redundancy, thereby ensuring that when a group of refrigeration modules fails, other modules can still work normally, thereby ensuring the continuity of the unit operation and not affecting the heat dissipation requirements of equipment such as the inverter.

[0133] The present invention integrates the hot air cooling device and the condenser cooling device into one unit, and the internal layout is compact and reasonable, which is convenient for transportation, installation and maintenance, reduces system complexity and improves engineering implementation efficiency.

[0134] The present invention, in a scenario where water cooling is not required, achieves water-saving operation by independently starting the second cooling module (air cooling), reduces dependence on water resources, and reduces energy consumption, thereby meeting energy-saving and environmental protection requirements.

[0135] The present invention can be applied to a variety of complex working conditions such as water shortage, high temperature, low temperature, etc., and can maintain normal operation, especially under special circumstances such as short-term water outage or severe cold and ice, breaking through the limitations of traditional cooling technology on external conditions.

[0136] The present invention effectively improves the heat dissipation efficiency, safety and system reliability of electrical equipment through innovative structures such as wind collecting hoods, air ducts, wind temperature adjustment chambers, and emergency exhaust vents in the electrical room design, while reducing energy waste and manual intervention, and has significant beneficial effects.

[0137] The present invention, the method for automatically adjusting the number of refrigeration module startups dynamically adjusts the number of refrigeration modules and accurately controls the cooling effect according to actual temperature difference data, which not only optimizes energy usage and improves system operation efficiency, but also reduces operation and maintenance costs and manual intervention, and has significant advantages such as intelligence, energy saving, high efficiency, and reliability.

[0138] The present invention, the cooling mode automatic adjustment method dynamically adjusts the cooling mode of the condenser, fully considers the change of the external ambient temperature, so that the system optimizes energy use while ensuring efficient cooling, improves the intelligence, adaptability and reliability of the system, and has good energy-saving effect and low maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0139] Figure 1 This is a schematic diagram of the electrical room of Example 1.

[0140] Figure 2 This is a schematic diagram of the electrical room of Example 2.

[0141] Figure 3 Schematic diagram of an integrated evaporative water source cooling unit.

[0142] Figure 4 This is a schematic diagram of the integrated evaporative water cooling unit from another angle.

[0143] Figure 5 This is the left view of the integrated evaporative water source cooling unit.

[0144] Figure 6 This is the front view of the integrated evaporative water source cooling unit.

[0145] Figure 7 This is the right side view of the integrated evaporative water source cooling unit.

[0146] Figure 8 It is a top view of the integrated evaporative water source cooling unit.

[0147] Fig. 9 It is a schematic diagram of the internal structure of an integrated evaporative water source cooling unit.

[0148] Fig.10 This is a schematic diagram of the working principle of the first cooling module of the integrated evaporative water source cooling unit. DETAILED DESCRIPTION

[0149] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0150] Example, combined with Figures 1 to 10 As shown, the integrated multi-mode cooling unit includes a body 1, a condenser cooling device for cooling the condenser, a condenser cooling device for cooling hot air, and a control module 4, wherein the body 1 is provided with an air temperature regulating chamber 11;

[0151] The condenser cooling device and the condenser cooling device are arranged in the body 1, and the condenser cooling device includes at least two groups of refrigeration modules, and the evaporator 211 of each group of refrigeration modules is placed in the air temperature adjustment chamber 11, and the top of the air temperature adjustment chamber 11 is provided with a hot air inlet 111, and the side wall of the air temperature adjustment chamber 11 is provided with a cold air outlet 112;

[0152] The condenser 212 of each group of refrigeration modules is placed in the condenser cooling device;

[0153] The condenser cooling device is built with a first cooling module that uses cold water to cool the condenser 212 and a second cooling module that uses cold air to cool the condenser 212. The first cooling module, the second cooling module and the refrigeration module are electrically connected to the control module 4 respectively. The control module 4 controls the second cooling module to start alone or the first cooling module and the second cooling module to start at the same time.

[0154] The control module 4 starts a preset number of refrigeration modules and starts the second cooling module, and the external hot air enters the air temperature adjustment chamber 11 along the hot air inlet 111, and the evaporator 211 cools the hot air to form cold air and is discharged to the cold air outlet 112, and the second cooling module uses the cold air to cool the condenser 212;

[0155] The control module 4 starts a preset number of refrigeration modules and starts the first cooling module and the second cooling module. The external hot air enters the air temperature regulating chamber 11 along the hot air inlet 111, and the evaporator 211 cools the hot air to form cold air and is discharged to the cold air outlet 112. The first cooling module uses cold water to cool the condenser 212, and the second cooling module uses cold air to cool the condenser 212.

[0156] Furthermore, the cooling device of the condenser 212 further includes a cooling bin 24, the first cooling module includes a spray device 221, a packing layer and a circulating water pump 222, and the second cooling module includes a fan 231 and air inlet louvers;

[0157] The top of the cooling bin 24 is provided with an air outlet 241, the bottom of the cooling bin 24 is provided with a water collection pool 242, the cooling bin 24 is provided with a water supply inlet 243 connected to the outside, a cooling circulation water inlet 244, a circulation water outlet 245, a drainage outlet for sewage discharge during cleaning, and an overflow outlet;

[0158] The spray device 221 is arranged inside the cooling bin 24, and the spray device 221 includes at least one spray pipe 2211 and a plurality of spray heads 2212. The spray pipe 2211 is connected to the cooling circulation water inlet 244, and is used to uniformly spray water into the cooling bin 24;

[0159] The packing layer is arranged below the spray device 221 to increase the contact area between water and air and promote heat exchange;

[0160] The fan 231 is disposed at the air outlet 241 at the top of the cooling chamber 24, and is used to drive the air to flow so that the air passes through the packing layer from bottom to top;

[0161] The lower part of the cooling chamber 24 is provided with an air inlet 241 for introducing cold air, and the air inlet 241 is provided with an air inlet louver, and the louver of the air inlet louver is tilted, and the louver can guide water to flow toward the water collection pool 242, and the tilted louver design is used to prevent water in the water collection pool 242 from splashing out;

[0162] The circulating water outlet 245 and the replenishing water source inlet 243243 are connected to the water collection tank 242;

[0163] The inlet of the circulating water pump 222 is connected to the circulating water outlet 245, and the outlet of the circulating water pump 222 is connected to the cooling circulating water inlet 244;

[0164] The condenser 212 of each group of refrigeration modules is placed in the cooling chamber 24;

[0165] The circulating water pump 222 and the fan 231 are electrically connected to the control module 4 , respectively, and the control module 4 controls the start and stop of the circulating water pump 222 and the fan 231 .

[0166] The control module 4 starts the second cooling module, the fan 231 starts, and the outside cold air enters through the air inlet 241 of the cooling chamber 24, and after heat exchange with the coil of the condenser 212, it becomes hot air and is discharged to the air outlet 241. In this process, the outside cold air exchanges heat with the condenser 212 to take away heat, and the cycle repeats;

[0167] The control module 4 starts the first cooling module, and the small holes of the spray head 2212 evenly spray low-temperature water on the packing layer to form a small molecule water film, which is evenly sprinkled on the coil surface of the condenser 212, and heat exchanges with the condenser 212 to take away heat while reducing the temperature of the condenser 212. In this process, the low-temperature water heat exchanges with the condenser 212 to take away heat, and the cycle repeats;

[0168] When the control module 4 starts the first cooling module and the second cooling module at the same time, the outside cold air exchanges heat with the condenser 212 to take away heat, and the cycle is repeated. The low-temperature water exchanges heat with the condenser 212 to take away heat, and the cycle is repeated. In the process of falling, the water droplets after heat exchange encounter the outside cold air coming in through the air inlet 241 of the cooling bin 24 for heat exchange. The rising air flow driven by the top fan 231 slows down the falling speed of the water droplets, thereby improving the cooling effect of the hot water. The cooled water droplets flow into the water collection pool 242, and the circulating water pump 222 transports the low-temperature water in the water collection pool 242 along the cooling circulation water inlet 244 and the spray pipe 2211 to each spray head 2212. The spray head 2212 sprays low-temperature water into the cooling bin 24, and the cycle is repeated.

[0169] In this process, the outside cold air can exchange heat with the condenser 212 alone to remove heat, and can also exchange heat with the condenser 212 at the same time with the water cooling system of the first cooling module to remove heat, which is more efficient and has a better cooling effect.

[0170] Furthermore, the machine body 1 is divided into a first cavity 12 and a second cavity 13, the first cavity 12 and the second cavity 13 are arranged side by side, and the first cavity 12 forms the cooling chamber 24;

[0171] The second cavity 13 is divided into the wind temperature adjustment cavity 11 and the equipment installation cavity 14, and the wind temperature adjustment cavity 11 is located above the equipment installation cavity 14;

[0172] The compressor 213 of each refrigeration module is placed in the equipment installation cavity 14;

[0173] Furthermore, it also includes a frame 5, and the evaporator 211 of each group of refrigeration modules is stacked in the frame 5 to form an evaporator module 51. The evaporator module 51 is placed obliquely in the wind temperature regulating chamber 11, and the external hot air enters the wind temperature regulating chamber 11 along the hot air inlet 111. The evaporator 211 of each group of refrigeration modules can contact the hot air for heat exchange.

[0174] A cooling mode automatic adjustment method further includes an ambient temperature sensor, the ambient temperature sensor being electrically connected to the control module 4;

[0175] The ambient temperature sensor is arranged on the machine body 1 to monitor the external ambient temperature T2. The control module 4 dynamically adjusts the cooling mode of the condenser 212 by receiving the temperature state data of the ambient temperature sensor data. The cooling mode includes:

[0176] First mode: air cooling is the main mode, and only the second cooling module is started;

[0177] The second mode: air cooling and water cooling combined mode, the first cooling module and the second cooling module are started at the same time;

[0178] The control module 4 switches the cooling mode according to the following conditions:

[0179] When the external environment temperature T2 is lower than the set threshold value T1, the first mode is started;

[0180] When the external environment temperature T2 is higher than the set threshold T1, the second mode is activated.

[0181] A method for automatically adjusting the number of refrigeration module startups, further comprising a first temperature sensor and a second temperature sensor, wherein the first temperature sensor and the second temperature sensor are electrically connected to a control module 4, respectively;

[0182] The first temperature sensor is installed at the hot air inlet 111 on the top of the body 1, and is used to measure the hot air temperature T3 entering the air temperature regulating chamber 11;

[0183] The second temperature sensor is installed at the cold air outlet 112 of the air temperature regulating chamber 11 and is used for the cold air temperature T4 after cooling;

[0184] Step 1: Calculate the temperature difference ΔT between the hot air inlet 111 and the cold air outlet 112 A =T3-T4;

[0185] Step 2: Calculate the temperature difference ΔT between the cold air outlet 112 temperature and the ambient temperature B =T4-T2;

[0186] Step 3: Set the target temperature difference threshold ΔT C =10℃ and the ambient temperature difference threshold ΔT D =5℃;

[0187] In the first mode:

[0188] When ΔT A <ΔT C When , the control module 4 reduces the number of operating refrigeration modules by 1;

[0189] When ΔT A >ΔT C When , the control module 4 increases the number of running refrigeration modules by 1;

[0190] In the second mode:

[0191] When ΔT A <ΔT C When ΔT B <ΔT D When , the control module 4 reduces the number of operating refrigeration modules by 1;

[0192] When ΔT A >ΔTC When ΔT B >ΔT D When , the control module 4 increases the number of running refrigeration modules by 1.

[0193] Automatic adjustment method of cooling mode of integrated multi-mode cooling unit:

[0194] The cooling mode automatic adjustment method aims to automatically select an appropriate cooling mode according to the external environment temperature and the system operation status. The system dynamically adjusts the cooling mode of the condenser 212 using the ambient temperature sensor according to the set threshold temperature (T1) to improve the cooling efficiency and save energy.

[0195] Specific steps:

[0196] Ambient temperature monitoring:

[0197] The ambient temperature sensor (T2) continuously monitors the external ambient temperature and inputs the ambient temperature sensor data into the control module 4.

[0198] Cooling mode judgment:

[0199] When the ambient temperature T2 is lower than the set temperature threshold T1, the air cooling mode is activated (only the second cooling module is activated). In this mode, the cooling of the condenser 212 is mainly achieved by air cooling.

[0200] When the ambient temperature T2 is higher than the set temperature threshold T1, the air cooling and water cooling combination mode is started (the first cooling module and the second cooling module are started at the same time). In this mode, the cooling of the condenser 212 is carried out by combining air cooling and water cooling, which can more effectively reduce the temperature of the condenser 212 and ensure the normal working temperature of the equipment.

[0201] Example:

[0202] The threshold temperature T1 is set to 30°C.

[0203] When T2<30° C., the control module 4 only starts the second cooling module and uses air cooling to reduce the temperature.

[0204] When T2>30°C, the control module 4 starts the first cooling module and the second cooling module, and adopts a cooling method combining air cooling and water cooling.

[0205] In this way, the cooling mode can be automatically adjusted according to changes in ambient temperature, improving the energy efficiency and cooling effect of the system.

[0206] Automatic adjustment method of cooling mode of integrated multi-mode cooling unit:

[0207] The method automatically adjusts the number of refrigeration modules started by monitoring the temperature T3 of the hot air inlet 111 and the temperature T4 of the cold air outlet 112, combined with the external environment temperature T2, to ensure that the cooling system is always in the best working state. According to the change of temperature difference, the control module 4 will automatically increase or decrease the number of refrigeration modules in operation, thereby optimizing energy use and maintaining stable operation of the equipment.

[0208] Specific steps:

[0209] Temperature monitoring:

[0210] The first temperature sensor is installed at the hot air inlet 111 to measure the temperature T3 of the hot air entering the air temperature adjustment chamber 11 .

[0211] The second temperature sensor is installed at the cold air outlet 112 to measure the temperature T4 of the cooled cold air.

[0212] The ambient temperature sensor is used to monitor the external ambient temperature and is set to T2.

[0213] Calculate the temperature difference:

[0214] Calculate the temperature difference between the hot air inlet 111 and the cold air outlet 112: ΔT A =T3-T4

[0215] Calculate the temperature difference between the cold air outlet 112 temperature and the ambient temperature: ΔT B =T4-T2

[0216] Determine the number of refrigeration modules started:

[0217] Set the target temperature difference threshold ΔT C =10℃, ambient temperature difference threshold ΔT D =5℃.

[0218] In the first mode:

[0219] When ΔT A <ΔT C When , the control module 4 reduces the number of operating refrigeration modules by 1.

[0220] When ΔT A >ΔT C When , the control module 4 increases the number of running refrigeration modules by 1.

[0221] In the second mode:

[0222] When ΔT A <ΔT C And ΔT B <ΔT D When , the control module 4 reduces the number of operating refrigeration modules by 1.

[0223] When ΔT A >ΔT C And ΔT B >ΔT D When , the control module 4 increases the number of running refrigeration modules by 1.

[0224] Example:

[0225] Assume that the temperature of the hot air inlet 111 is T3 = 42°C, the temperature of the cold air outlet 112 is T4 = 31°C, and the ambient temperature is T2 = 25°C.

[0226] Calculated: ΔT A =42℃-31℃=11℃(greater than target threshold ΔT C =10℃)

[0227] ΔT B =31℃-25℃=6℃(greater than the ambient temperature difference threshold ΔT D =5℃)

[0228] Due to ΔT A >ΔT C And ΔT B >ΔT D , the control module 4 will increase the number of running refrigeration modules by 1. Assume that the temperature of the hot air inlet 111 is T3=35°C, the temperature of the cold air outlet 112 is T4=33°C, and the ambient temperature is T2=25°C.

[0229] The calculation results are:

[0230] ΔT A =35℃-33℃=2℃(less than target threshold ΔT C =10℃)

[0231] ΔT B =33℃-25℃=8℃(greater than the ambient temperature difference threshold ΔT D =5℃)

[0232] Due to ΔT A <ΔT C And ΔT B >ΔT D , control module 4 will increase the number of operating refrigeration modules by 1.

[0233] In this way, the system can automatically adjust the number of refrigeration modules started according to real-time temperature difference data to ensure that the cooling process is efficient and energy-saving.

[0234] Embodiment 1, combination Figure 1 As shown, an electrical room, the electrical room 6 is used to store electrical equipment 61, the electrical equipment 61 is arranged in the electrical room 6, and the side wall of the electrical room 6 is provided with a hot air outlet 62 and a cold air inlet 63 connected to the electrical room 6;

[0235] The electrical room 6 is provided with an air duct 7 and an air collecting hood 8, the air collecting hood 8 is arranged in the electrical room 6 and located above the heat dissipation port of the electrical equipment 61, the air collecting hood 8 is connected with one end of the air duct 7, the other end of the air duct 7 extends out of the hot air outlet 62 and is connected with the hot air inlet 111 of the air temperature regulating chamber 11, and the cold air outlet 112 of the air temperature regulating chamber 11 is connected with the cold air inlet 63;

[0236] The air duct 7 is also provided with an emergency air outlet 71 , which is located outside the electrical room 6 . An electric emergency air exhaust valve 72 is provided at the emergency air outlet 71 , which controls the emergency air outlet 71 to be opened or closed.

[0237] Temperature regulation principle of electrical room 6

[0238] The temperature regulation principle of the electrical room 6 is mainly to regulate the temperature of the electrical room 6 through the linkage of the induced air duct 7, the air collecting hood 8 and the wind temperature regulating chamber 11. The induced air duct 7 effectively guides the airflow through the air collecting hood 8, obtains hot air from the heat dissipation port of the electrical equipment 61, and then exchanges heat with the cold air outside, thereby achieving temperature control of the electrical room 6.

[0239] Working principle:

[0240] Hot air guidance and cooling

[0241] The heat generated by the electrical equipment 61 during operation is released through its heat dissipation port, and the hot air is collected by the air collecting hood 8 and introduced into the air temperature regulating chamber 11 through the air duct 7 .

[0242] The evaporator 211 disposed in the air temperature regulating chamber 11 cools the introduced hot air, and the hot air exchanges heat with the evaporator 211 to form cold air.

[0243] The cold air is introduced into the cold air inlet 63 of the electrical room 6 through the cold air outlet 112 of the air temperature adjustment chamber 11, thereby realizing the cooling cycle of the indoor air.

[0244] Internal circulation and clean environment

[0245] The system adopts an internal air circulation design, does not introduce outside air, prevents moisture and dust from entering the electrical room 6, ensures the cleanliness of the internal environment of the electrical room 6, and protects the safe operation of the equipment.

[0246] The temperature in the air temperature regulating chamber 11 can be adjusted by controlling the operation of the refrigeration module to ensure that the temperature in the electrical room 6 is stable in the range of 20-30° C. to meet the operation requirements of electrical equipment 61 such as the inverter.

[0247] Emergency exhaust function

[0248] Under special circumstances (such as a refrigeration module failure or the indoor equipment environment exceeds a set value), the hot air in the electrical room 6 can be exhausted through the emergency exhaust vent 71 .

[0249] The emergency exhaust port 71 is provided with an electric emergency exhaust valve 72, which can be opened automatically or manually as needed to quickly reduce the temperature in the electrical room 6 and enhance the safety of the system.

[0250] Embodiment 2, combined Figure 2 As shown, an electrical room 6, the electrical room 6 is used to store electrical equipment 61, the electrical equipment 61 is arranged in the electrical room 6, and the side wall of the electrical room 6 is provided with a hot air outlet 62 and a cold air inlet 63 connected to the electrical room 6;

[0251] The duct 7 is located outside the electrical room 6, one end of the duct 7 is connected to the hot air outlet 62, the other end of the duct 7 is connected to the hot air inlet 111 of the air temperature regulating chamber 11, and the cold air outlet 112 of the air temperature regulating chamber 11 is connected to the cold air inlet 63;

[0252] The air duct 7 is also provided with an emergency air outlet 71 , which is located outside the electrical room 6 . An electric emergency air exhaust valve 72 is provided at the emergency air outlet 71 , which controls the emergency air outlet 71 to be opened or closed.

[0253] Working principle:

[0254] Hot air guidance and cooling

[0255] The heat generated by the electrical equipment 61 during operation is released through its heat dissipation port, and the hot air is introduced into the air temperature regulating chamber 11 through the hot air outlet 62 and the air duct 7 .

[0256] The evaporator 211 disposed in the air temperature regulating chamber 11 cools the introduced hot air, and the hot air exchanges heat with the evaporator 211 to form cold air.

[0257] The cold air is introduced into the cold air inlet 63 of the electrical room 6 through the cold air outlet 112 of the air temperature adjustment chamber 11, thereby realizing the cooling cycle of the indoor air.

[0258] Internal circulation and clean environment

[0259] The system adopts an internal air circulation design, does not introduce outside air, prevents moisture and dust from entering the electrical room 6, ensures the cleanliness of the internal environment of the electrical room 6, and protects the safe operation of the equipment.

[0260] The temperature in the air temperature regulating chamber 11 can be adjusted by controlling the operation of the refrigeration module to ensure that the temperature in the electrical room 6 is stable in the range of 20-30° C. to meet the operation requirements of electrical equipment 61 such as the inverter.

[0261] Emergency exhaust function

[0262] In special circumstances (such as a refrigeration module failure or the indoor equipment environment exceeds a set value), the hot air in the electrical room 6 can be exhausted through the emergency exhaust vent 71 .

[0263] The emergency exhaust port 71 is provided with an electric emergency exhaust valve 72, which can be opened automatically or manually as needed to quickly reduce the temperature in the electrical room 6 and enhance the safety of the system.

Claims

1. Integrated multi-mode cooling unit, characterized by: It comprises a machine body, a condenser cooling device for cooling a condenser, a hot air cooling device for cooling hot air, and a control module, wherein the machine body is provided with a wind temperature regulating chamber; The condenser cooling device and the hot air cooling device are arranged in the machine body, the hot air cooling device includes at least two groups of refrigeration modules, the evaporator of each group of refrigeration modules is placed in the air temperature regulating chamber, the top of the air temperature regulating chamber is provided with a hot air inlet, and the side wall of the air temperature regulating chamber is provided with a cold air outlet; The condenser of each group of refrigeration modules is placed in the condenser cooling device; The condenser cooling device is built with a first cooling module that uses cold water to cool the condenser and a second cooling module that uses cold air to cool the condenser, the first cooling module, the second cooling module and the refrigeration module are electrically connected to the control module respectively, and the control module controls the second cooling module to start alone or the first cooling module and the second cooling module to start at the same time; The control module starts a preset number of refrigeration modules and starts the second cooling module, and the external hot air enters the air temperature adjustment chamber along the hot air inlet, the evaporator cools the hot air to form cold air and is discharged to the cold air outlet, and the second cooling module uses the cold air to cool the condenser; The control module starts a preset number of refrigeration modules and starts the first cooling module and the second cooling module. The external hot air enters the air temperature regulating chamber along the hot air inlet, the evaporator cools the hot air to form cold air and is discharged to the cold air outlet. The first cooling module uses cold water to cool the condenser, and the second cooling module uses cold air to cool the condenser.

2. The integrated multi-mode cooling unit according to claim 1, characterized in that: The condenser cooling device further comprises a cooling bin, the first cooling module comprises a spray device, a packing layer and a circulating water pump, and the second cooling module comprises a fan and air inlet louvers; The top of the cooling bin is provided with an air outlet, the bottom of the cooling bin is provided with a water collection pool, and the cooling bin is provided with a water supply inlet connected to the outside, a cooling circulation water inlet, a circulation water outlet, a drainage outlet for sewage discharge during cleaning, and an overflow outlet; The spray device is arranged inside the cooling bin, and comprises at least one spray pipe and a plurality of spray heads, wherein the spray pipe is connected to the cooling circulation water inlet and is used to uniformly spray water into the cooling bin; The packing layer is arranged below the spray device to increase the contact area between water and air and promote heat exchange; The fan is arranged at the air outlet on the top of the cooling bin, and is used to drive the air to flow so that the air passes through the packing layer from bottom to top; The lower part of the cooling bin is provided with an air inlet for introducing cold air, and the air inlet is provided with an air inlet louver, and the louver of the air inlet louver is tilted, and the louver can guide water to flow toward the water collection pool, and the tilted louver is designed to prevent water from splashing out of the water collection pool; The circulating water outlet and the replenishing water source inlet are connected to the water collection tank; The inlet of the circulating water pump is connected to the circulating water outlet, and the outlet of the circulating water pump is connected to the cooling circulating water inlet; The condenser of each group of refrigeration modules is placed in the cooling bin; The circulating water pump and the fan are electrically connected to the control module respectively, and the control module controls the start and stop of the circulating water pump and the fan.

3. The integrated multi-mode cooling unit according to claim 1, characterized in that: The machine body is divided into a first cavity and a second cavity, the first cavity and the second cavity are arranged side by side, and the first cavity forms the cooling chamber; The second cavity is divided into the air temperature regulating cavity and the equipment installation cavity, and the air temperature regulating cavity is located above the equipment installation cavity; The compressor of each refrigeration module is placed in the equipment installation cavity.

4. The integrated multi-mode cooling unit according to claim 1, characterized in that: It also includes a frame, and the evaporators of each group of refrigeration modules are stacked in the frame to form an evaporator module. The evaporator module is placed obliquely in the air temperature regulating chamber, and the external hot air enters the air temperature regulating chamber along the hot air inlet. The evaporators of each group of refrigeration modules can contact the hot air for heat exchange.

5. A method for automatically adjusting the cooling mode using the integrated multi-mode cooling unit according to any one of claims 1 to 4, characterized in that: Also included is an ambient temperature sensor, the ambient temperature sensor being electrically connected to the control module; The ambient temperature sensor is arranged on the machine body to monitor the external ambient temperature T2. The control module dynamically adjusts the cooling mode of the condenser by receiving the temperature status data of the ambient temperature sensor data. The cooling mode includes: First mode: air cooling is the main mode, and only the second cooling module is started; The second mode: air cooling and water cooling combined mode, the first cooling module and the second cooling module are started at the same time; The control module switches the cooling mode according to the following conditions: When the external environment temperature T2 is lower than the set threshold value T1, the first mode is started; When the external environment temperature T2 is higher than the set threshold T1, the second mode is activated.

6. The cooling mode automatic adjustment method according to claim 5, characterized in that: The T1 is 30°C.

7. A method for automatically adjusting the number of refrigeration module startups using the integrated multi-mode cooling unit according to any one of claims 1 to 4, characterized in that: Also included is a first temperature sensor and a second temperature sensor, wherein the first temperature sensor and the second temperature sensor are electrically connected to the control module respectively; The first temperature sensor is installed at the hot air inlet on the top of the machine body, and is used to measure the hot air temperature T3 entering the air temperature regulating chamber; The second temperature sensor is installed at the cold air outlet of the air temperature regulating chamber, and is used for the cold air temperature T4 after cooling; Step 1: Calculate the temperature difference ΔT between the hot air inlet temperature and the cold air outlet temperature A = T3-T4; Step 2: Calculate the temperature difference ΔT between the cold air outlet temperature and the ambient temperature B = T4-T2; Step 3: Set the target temperature difference threshold ΔT C and the ambient temperature difference threshold ΔT D ; In the first mode: When ΔT A <ΔT C When , the control module reduces the number of running refrigeration modules by 1; When ΔT A >ΔT C When , the control module increases the number of running refrigeration modules by 1; In the second mode: When ΔT A <ΔT C When ΔT B <ΔT D When , the control module reduces the number of running refrigeration modules by 1; When ΔT A >ΔT C When ΔT B >ΔT D When the control module increases the number of running refrigeration modules by 1.

8. The method for automatically adjusting the number of refrigeration module startups according to claim 7, characterized in that: The temperature difference threshold ΔT C The temperature difference threshold ΔT is 10℃ and the ambient temperature D is 5℃.

9. An electrical room using the integrated multi-mode cooling unit according to any one of claims 1 to 4, characterized in that: The electrical room is used to store electrical equipment, and the electrical equipment is arranged in the electrical room. The side wall of the electrical room is provided with an upper hot air outlet and a lower cold air inlet connected to the electrical room; The electrical room is provided with an air duct and an air collecting hood, the air collecting hood is arranged in the electrical room and is located above the heat dissipation port of the electrical equipment, the air collecting hood is connected with one end of the air duct, the other end of the air duct extends out of the upper hot air outlet and is connected with the hot air inlet of the air temperature regulating chamber, and the cold air outlet of the air temperature regulating chamber is connected with the lower cold air inlet; The air duct is also provided with an emergency exhaust port, which is located outside the electrical room. An electric emergency exhaust valve is provided at the emergency exhaust port, which controls the opening or closing of the emergency exhaust port.

10. An electrical room using the integrated multi-mode cooling unit according to any one of claims 1 to 4, characterized in that: The electrical room is used to store electrical equipment, and the electrical equipment is arranged in the electrical room. The side wall of the electrical room is provided with an upper hot air outlet and a lower cold air inlet connected to the electrical room; It also includes an air duct, the air duct is located outside the electrical room, one end of the air duct is connected to the upper hot air outlet, the other end of the air duct is connected to the hot air inlet of the air temperature regulating chamber, and the cold air outlet of the air temperature regulating chamber is connected to the lower cold air inlet; The air duct is also provided with an emergency exhaust port, which is located outside the electrical room. An electric emergency exhaust valve is provided at the emergency exhaust port, which controls the opening or closing of the emergency exhaust port.

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