Low-noise air-cooled water-source cooling unit

Abstract

This utility model discloses a low-noise air-to-water cooling unit with suction-type cooling, belonging to the technical field of inverter cooling devices. It includes an indoor inverter with multiple exhaust fans mounted on top. The exhaust ducts of the fans are connected to a ductwork. The right end of the ductwork extends through the right side wall and is equipped with an electric damper. A rainproof louvered fresh air filter is embedded in the left wall of the high-voltage inverter. The electric damper and the rainproof louvered fresh air filter open and close synchronously. The cooling device includes an outdoor enclosure connected to the return air inlet of the ductwork. Inside the enclosure, a heat exchanger and an evaporator are installed sequentially from right to left. A baffle plate connected to the inner wall of the enclosure is located on the right side of the heat exchanger. A shell-and-tube heat exchanger and a compressor are installed within the space formed by the baffle plate and the inner wall of the enclosure. A fan connected to the left side of the enclosure is embedded in the right wall of the inverter. This utility model can solve problems such as high temperature, negative pressure, dust, and noise, and has an automatic emergency handling function in case of cooling device failure.

Description

Technical Field

[0001] This utility model relates to the technical field of inverter cooling devices, and in particular to a suction-type low-noise air-water cooled water source cooling unit. Background Technology

[0002] Industrial high-voltage frequency converters generate a lot of heat during operation. Using traditional direct ventilation cooling methods can easily lead to high negative pressure and dust in the room, resulting in unsatisfactory cooling effects, electrical equipment failure, and in severe cases, equipment burnout. In addition, maintenance is required frequently and the scope of maintenance is relatively wide, such as frequency converter maintenance and dust in the power room.

[0003] High-voltage frequency converters are installed indoors, and the high temperature, large negative pressure, dust, and noise generated during operation seriously affect the safe operation of high-voltage frequency converters. Utility Model Content

[0004] The purpose of this invention is to solve problems such as high temperature, negative pressure, dust and noise, and to have an automatic emergency handling function when the cooling device fails.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a low-noise air-cooled water source cooling unit with suction, including an inverter installed indoors, multiple exhaust fans installed on the top of the inverter, exhaust pipes of the exhaust fans connected to air guide pipes, the right end of the air guide pipes passing through the right side wall and equipped with an electric air valve, and a rainproof louvered fresh air filter port embedded in the left side wall of the high-voltage inverter, the electric air valve opening and closing synchronously with the rainproof louvered fresh air filter port;

[0006] The cooling device includes a box located outdoors and connected to the return air inlet of the air duct. A heat exchanger and an evaporator are installed in the box from right to left. A baffle plate connected to the inner wall of the box is provided on the right side of the heat exchanger. A shell-and-tube heat exchanger and a compressor are installed in the space formed by the baffle plate and the inner wall of the box. A fan connected to the left side of the box is embedded in the right wall of the frequency converter.

[0007] As a further description of the above technical solution: the heat exchanger uses circulating water in the pipe to perform primary cooling of the discharged hot air, and the evaporator uses refrigerant in the pipe to perform secondary cooling of the already initially cooled hot air through phase change heat absorption.

[0008] As a further description of the above technical solution: the box is equipped with an electrical control box, which is electrically connected to the electric air valve, fan, and compressor.

[0009] As a further description of the above technical solution: the electrical control box is equipped with an audible and visual alarm module, and a temperature detection probe and an electric heater that are electrically connected to the electrical control box are installed on the box body.

[0010] As a further description of the above technical solution: a flow channel is formed between the inclined plate and the inner wall of the box to increase the air pressure of the equipment.

[0011] As a further description of the above technical solution: the housing is equipped with a wind temperature sensor, a water temperature sensor and a pressure sensor, and the electrical control box is equipped with a touch screen that displays the data of each sensor.

[0012] As a further description of the above technical solution: the fan is an external rotor fan, and the air outlet faces indoors.

[0013] As a further description of the above technical solution: the cooling device adopts a suction design and has a built-in filter in the airflow path.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0015] 1. The device effectively reduces the high temperature generated during the operation of the high-voltage frequency converter through multi-stage heat exchange and airflow regulation. The electric air valve and the rainproof louver fresh air filter open and close synchronously to avoid the formation of negative pressure.

[0016] 2. The device integrates water cooling and air conditioning for dual cooling functions, and can automatically adjust according to actual working conditions to maintain the indoor temperature between 20 and 30°C, meeting the cooling needs of different seasons and operating conditions.

[0017] 3. The airflow distribution of the device is more uniform. By drawing air, the airflow diffuses freely through the heat exchanger, avoiding the direct impact of local high-speed airflow on the heat exchanger surface, so that the air and the heat exchange medium can fully contact each other, significantly improving the overall heat exchange efficiency.

[0018] 4. The suction design makes equipment maintenance more convenient. In suction mode, debris can be intercepted by the filter inside the equipment, reducing internal pollution of the fan heat exchanger, simplifying daily maintenance and improving equipment reliability.

[0019] 5. This device uses an external rotor fan, whose unique structure effectively reduces operating noise and minimizes interference with the working environment, making it suitable for industrial sites with high noise requirements.

[0020] 6. After multi-stage cooling, the fan delivers cool air to the room at a high speed, quickly reducing the room temperature and ensuring that the inverter and surrounding electrical equipment are within the ideal operating temperature range, thereby improving overall cooling efficiency. Attached Figure Description

[0021] Figure 1 A schematic diagram of the present invention is shown;

[0022] Figure 2 A front view of the fan of this utility model is shown;

[0023] Figure 3 The front view of the fan of this utility model is shown;

[0024] Figure 4 A side view of the fan of this utility model is shown;

[0025] Figure 5 A top view of the fan of this utility model is shown;

[0026] Figure 6 A schematic diagram of the electrical control box and return air vent of this utility model is shown.

[0027] Legend:

[0028] 1. Shell and tube heat exchanger; 2. Compressor; 3. Pressure sensor; 4. Air temperature sensor; 5. Electrical control box; 6. Flow deflector; 7. Heat exchanger; 8. Evaporator; 9. Fan; 10. Water temperature sensor; 12. Electric air valve; 13. Air duct; 14. Rainproof louvered fresh air filter. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-6 This utility model provides a technical solution: a suction-type low-noise air-water cooled water source cooling unit, including a frequency converter installed on an indoor mounting surface, multiple exhaust fans installed on the top of the frequency converter, the exhaust pipes of the exhaust fans are connected to a guide pipe 13, the right end of the guide pipe 13 passes through the right side wall and extends to the outside, and an electric air valve 12 is installed on the guide pipe 13.

[0031] The high-voltage frequency converter generates heat during startup and operation. This heat is discharged by the exhaust fan located on the top of the high-voltage frequency converter cabinet. At this time, the temperature of the discharged hot air is as high as 50 degrees Celsius or more. The hot air discharged by each exhaust fan is collected by the exhaust pipe and then input into the air duct 13 of the cooling device through the exhaust pipe.

[0032] Furthermore, the left wall of the high-voltage frequency converter is fitted with a rainproof louvered fresh air filter 14. The electric air valve 12 opens and closes synchronously with the rainproof louvered fresh air filter 14. During emergency exhaust, it can promptly replenish the indoor fresh air and prevent the formation of negative pressure in the room due to continuous exhaust.

[0033] When the cooling device is in normal operation, the electric air valve 12 remains closed. When the fan 9 malfunctions due to overload or other reasons, the electrical control box 5 will trigger an audible and visual alarm, stop the operation of the fan 9, and open the electric air valve 12 to start the emergency exhaust function. When the cooling device is in emergency exhaust mode, due to the negative pressure state formed indoors, outdoor ambient temperature air is drawn in through the rainproof louver fresh air filter 14, and enters the room after filtration, thereby achieving emergency cooling.

[0034] Furthermore, the cooling device includes a box located outdoors and connected to the return air inlet of the air duct 13. Inside the box, from right to left, a heat exchanger 7 and an evaporator 8 are installed. The heat exchanger 7 is installed inside the pipe and has a circulating water channel inside. The circulating water flows inside the pipe and achieves primary cooling of the hot air discharged into the pipe through heat transfer with the hot air outside the pipe. The evaporator 8 is filled with refrigerant. The refrigerant absorbs heat during the phase change process and further cools the hot air after the initial cooling by the heat exchanger 7, thereby further reducing the temperature of the cooled air.

[0035] The device integrates two modes: water cooling and air conditioning cooling. Through the synergistic effect of industrial circulating water and refrigerant, the equipment can maintain a stable indoor temperature under different seasons and operating conditions.

[0036] Furthermore, the right side of the heat exchanger 7 is equipped with a baffle plate 6 connected to the inner wall of the chamber. The baffle plate 6 and the inner wall of the chamber form a flow channel to increase the air pressure of the equipment. Through the air duct 13 and the baffle plate 6, the speed of the hot air is further increased when it flows through the channel. When it passes through the heat exchanger 7, it exhibits a free diffusion state, so that the hot air is evenly distributed on the surface of the heat exchanger 7. This avoids the direct impact of local high-speed airflow on the surface of the heat exchanger 7, ensures sufficient contact between the air and the heat exchange medium, and significantly improves the overall heat exchange efficiency.

[0037] Furthermore, the cooling device adopts a suction design. During equipment operation, the built-in filter can effectively intercept external debris and prevent dust and impurities from entering the fan 9 and heat exchanger 7. This design not only effectively reduces the risk of internal contamination of the device, but also significantly reduces the complexity and frequency of maintenance work, thereby improving the long-term stability and reliability of the device.

[0038] Furthermore, a shell-and-tube heat exchanger 1 and a compressor 2 are installed in the space formed by the inclined plate 6 and the inner wall of the box. The compressor 2 can start and stop by setting the temperature and regulating the refrigerant circulation to achieve the goal of energy saving and environmental protection.

[0039] Furthermore, the right wall of the inverter is fitted with a fan 9 that connects to the left side of the enclosure. There should be no fewer than two fans 9. The cooling air processed by the heat exchanger 7 and the evaporator 8 is efficiently delivered to the inverter room through the fans 9, thereby ensuring that the inverter is always maintained in a suitable operating temperature environment.

[0040] Especially in winter, when the temperature of the industrial circulating water reaches or falls below 25°C, the system can shut down the refrigerant-powered heat exchanger 7 and compressor 2, and directly utilize the industrial circulating water for cooling, thus achieving energy-saving effects.

[0041] Furthermore, the fan 9 is an external rotor fan with its air outlet facing indoors. Thanks to the unique structural design of the fan 9, the noise it generates during operation is significantly lower than that of traditional internal rotor fans. Under low-noise operation conditions, it effectively reduces interference to the surrounding working environment and is suitable for industrial sites with strict noise requirements. At the same time, the low noise not only reduces the additional energy consumption and vibration problems caused by equipment noise, but also further improves the stability of system operation.

[0042] By using at least two fans 9, cool air is delivered into the room at a high wind speed, effectively shortening the time it takes for the cooling air to reach the inverter and its surrounding electrical equipment. Its rapid cooling effect ensures that the inverter and related equipment can still be maintained within the ideal operating temperature range when the equipment load is large or the ambient temperature is high, thereby improving the overall cooling efficiency and the reliability of equipment operation.

[0043] Furthermore, the enclosure contains an electrical control box 5, which is electrically connected to the electric air valve 12, the fan 9, and the compressor 2 to form a control system. The electrical control box 5 is equipped with an audible and visual alarm module, and the enclosure is equipped with a temperature detection probe and an electric heater that are electrically connected to the electrical control box 5.

[0044] When the system detects that the fan 9 is overloaded or has other faults, the electrical control box 5 will immediately trigger an audible and visual alarm, stop the operation of the fan 9, and automatically open the electric air valve 12 to perform emergency ventilation. During this process, due to the formation of negative pressure indoors, outdoor air enters the room through the rainproof louver fresh air filter 14, thereby achieving emergency cooling.

[0045] The electrical control box 5 is used to control the start and stop of the Freon heat exchanger 7 and to set the indoor temperature adjustment range to 20-30℃. In addition, when the external ambient temperature is lower than 5℃, the electrical control box 5 will automatically start the electric heater by linking with the temperature detection probe and electric heater installed on the box to prevent the internal pipes of the heat exchanger 7 from freezing due to low water temperature, which could cause the pipes to crack.

[0046] Furthermore, the enclosure is equipped with a wind temperature sensor 4, a water temperature sensor 10, a pressure sensor 3, and a water flow switch. The electrical control box 5 is equipped with a touch screen that displays the data from each sensor, allowing for real-time monitoring of the equipment's inlet and outlet air temperature, inlet and outlet water temperature, and inlet water pressure, making the cooling equipment highly efficient and intelligent.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A low-noise air-cooled water-source cooling unit, including an indoor-installed frequency converter, characterized in that: The inverter is equipped with multiple exhaust fans on top. The exhaust pipes of the exhaust fans are connected to the air guide pipe (13). The right end of the air guide pipe (13) passes through the right side wall and is equipped with an electric air valve (12). The left side wall of the high voltage inverter is inlaid with a rainproof louvered fresh air filter port (14). The electric air valve (12) and the rainproof louvered fresh air filter port (14) open and close synchronously. The cooling device includes a box set outdoors and connected to the return air inlet of the air duct (13). A heat exchanger (7) and an evaporator (8) are installed in the box from right to left. A baffle plate (6) connected to the inner wall of the box is provided on the right side of the heat exchanger (7). A shell-and-tube heat exchanger (1) and a compressor (2) are installed in the space formed by the baffle plate (6) and the inner wall of the box. A fan (9) connected to the left side of the box is embedded in the right wall of the inverter.

2. The suction-type low-noise air-water cooled water source cooling unit according to claim 1, characterized in that: The heat exchanger (7) uses circulating water in the pipe to perform primary cooling of the discharged hot air, and the evaporator (8) uses refrigerant in the pipe to perform secondary cooling of the already initially cooled hot air through phase change heat absorption.

3. The suction-type low-noise air-water cooled water source cooling unit according to claim 1, characterized in that: The box is equipped with an electrical control box (5), which is electrically connected to the electric air valve (12), the fan (9), and the compressor (2).

4. The suction-type low-noise air-water cooled water source cooling unit according to claim 3, characterized in that: The electrical control box (5) is equipped with an audible and visual alarm module, and a temperature detection probe and an electric heater that are electrically connected to the electrical control box (5) are installed on the box.

5. The suction-type low-noise air-water cooled water source cooling unit according to claim 1, characterized in that: The inclined plate (6) forms a flow channel with the inner wall of the box to increase the air pressure of the equipment.

6. The suction-type low-noise air-water cooled water source cooling unit according to claim 1, characterized in that: The enclosure is equipped with a wind temperature sensor (4), a water temperature sensor (10), and a pressure sensor (3), and the electrical control box (5) is equipped with a touch screen that displays the data of each sensor.

7. The suction-type low-noise air-water cooled water source cooling unit according to claim 1, characterized in that: The fan (9) is an external rotor fan, and its air outlet faces indoors.

8. The suction-type low-noise air-water cooled water source cooling unit according to claim 1, characterized in that: The cooling device adopts a suction design and has a built-in filter in the airflow path.

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