Air-cooled heat dissipation integrated frequency converter cooling device

Abstract

The utility model discloses air -cooled heat dissipation integrated frequency converter cooling device belongs to frequency converter cooling equipment technical field, including the high voltage frequency converter of installation in the room, its characterized in that: high voltage frequency converter top is equipped with a plurality of exhaust fan, and the exhaust pipe intercommunication of exhaust fan has the air duct, and the right -hand end of air duct is worn and is installed with electric exhaust valve in the right side wall, and the left side wall of high voltage frequency converter is provided with electric fresh air valve, and electric fresh air valve and electric exhaust valve synchronous open -close, and cooling device includes the primary filter, centrifugal fan and heat exchanger that connect in turn in the box, and the condenser of compressor is installed in the right side of heat exchanger, and the air return mouth that communicates with primary filter is equipped in the bottom of air duct, and the manual air valve is equipped in the side of air return mouth, and the air outlet of heat exchanger is linked together with the air outlet hole of setting on the wall.

Description

Technical Field

[0001] This utility model relates to the technical field of inverter cooling equipment, and in particular to an integrated air-cooled inverter cooling device. Background Technology

[0002] Frequency converters play a crucial role in modern industrial applications. However, with the continuous increase in power, frequency converters generate a large amount of heat during operation. If heat dissipation is not effective, it will seriously affect the performance, reliability and service life of the equipment.

[0003] Traditional direct ventilation cooling methods result in high indoor negative pressure and dust levels, and the cooling effect is directly affected by the outside temperature, which can easily lead to electrical equipment failure and, in severe cases, burn out the equipment. Furthermore, traditional cooling equipment requires extensive water pipe installation, resulting in water waste. During the cooling circulation process, scale formation occurs, leading to decreased heat exchange efficiency and increased maintenance. High-voltage frequency converters have a large heat dissipation capacity, and when installed indoors, they typically cause high temperatures, high indoor negative pressure, and excessive dust, seriously affecting the safe operation of the high-voltage frequency converters. Utility Model Content

[0004] The purpose of this invention is to design a safe, efficient and modular inverter cooling device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an integrated air-cooled inverter cooling device, including a high-voltage inverter installed indoors, with multiple exhaust fans installed on the top of the high-voltage inverter, the 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 exhaust valve, and an electric fresh air valve installed on the left side wall of the high-voltage inverter, the electric fresh air valve and the electric exhaust valve opening and closing synchronously.

[0006] The cooling device includes a primary filter, a centrifugal fan, and a heat exchanger connected in sequence inside the housing. A compressor and a condenser are installed on the right side of the heat exchanger. A return air inlet connected to the primary filter is located at the bottom of the air duct. A manual air valve is located on the side of the return air inlet. The air outlet of the heat exchanger is connected to an air outlet hole installed on the wall.

[0007] As a further description of the above technical solution: the drive motors of the centrifugal fan and compressor adopt a fully enclosed structure, and their protection level meets the IP55 standard.

[0008] As a further description of the above technical solution: the cooling device is equipped with a fault detection system for real-time monitoring of its operating status.

[0009] As a further description of the above technical solution: an electrical control box for controlling the operation of the cooling device is installed next to the compressor.

[0010] As a further description of the above technical solution: an evaporator is installed next to the condenser and operates together with it.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0012] 1. The cooling device can reduce the operating temperature of the frequency converter, the primary filter can significantly reduce dust intrusion, and the electric fresh air valve and electric exhaust valve operate synchronously to avoid negative pressure in the room.

[0013] 2. The cooling device adopts an integrated design, making on-site installation extremely simple, convenient, and quick. It eliminates the need for complex water pipe laying and connection, saving time and labor costs required for installation.

[0014] 3. The cooling device can control the indoor temperature at 20-30℃, which fully meets the strict requirements of various high-voltage frequency converters for ambient temperature and ensures their stable performance and reliable operation.

[0015] 4. The use of an indoor closed cooling system effectively isolates external pollution, maintains the cleanliness of the power distribution room, and significantly reduces equipment failures and maintenance workload caused by environmental factors.

[0016] 5. The device is equipped with corresponding emergency measures to ensure that a failure of the cooling device will not affect the operation of the frequency converter, and to ensure the normal and safe operation of the frequency converter to the greatest extent.

[0017] 6. The equipment motor is equipped with a protection rating of ≥IP55, which has good dustproof and waterproof performance, can withstand necessary washing, and can operate stably for a long time in various harsh industrial environments such as outdoors.

[0018] 7. The equipment has a low failure rate, reliable performance, long service life, and low maintenance requirements. Attached Figure Description

[0019] Figure 1 A schematic diagram of the present invention is shown;

[0020] Figure 2 A schematic diagram of the cooling device of this utility model is shown.

[0021] Legend:

[0022] 1. Air duct; 2. Centrifugal fan; 3. Electric exhaust valve; 4. Condenser; 5. Heat exchanger; 6. Compressor; 7. Pre-filter; 8. Manual air valve; 9. Electric fresh air valve. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-2 This utility model provides a technical solution: an integrated air-cooled inverter cooling device, including a high-voltage inverter, which is installed on an indoor inverter mounting surface. Multiple exhaust fans are installed on the top of the high-voltage inverter. The exhaust fans are used to collect and exhaust the high-temperature air generated during the operation of the inverter. The exhaust fans can remove the heat generated by the inverter in a timely manner, prevent the equipment from overheating, ensure its normal operation and extend its service life.

[0025] Furthermore, the exhaust pipe of the exhaust fan is connected to the air guide pipe 1. The exhaust pipe and the air guide pipe 1 are used to connect the exhaust fan and the cooling device to ensure that the hot air can smoothly enter the cooling device for cooling. The cooling device cools down the high-temperature air discharged from the frequency converter and then inputs the cooled low-temperature air back into the room to maintain the frequency converter operating within a suitable temperature range.

[0026] Furthermore, an electric fresh air valve 9 is installed on the left wall of the high-voltage frequency converter. The electric fresh air valve 9 automatically opens when the cooling device fails, introducing outdoor cold air for emergency cooling.

[0027] Furthermore, the right side of the air duct 1 runs through the wall and is equipped with an electric exhaust valve 3. The electric exhaust valve 3 is closed during normal operation and only opens when the equipment fails, working in conjunction with the electric fresh air valve 9 to create air circulation and achieve emergency cooling.

[0028] Furthermore, the electric fresh air valve 9 and the electric exhaust valve 3 open and close synchronously. That is, when the electric exhaust valve 3 is opened, the system will automatically open the electric fresh air valve 9 to ensure that fresh outdoor air can smoothly enter the room during emergency exhaust, forming effective air circulation, improving the emergency cooling effect, and avoiding the formation of negative pressure indoors.

[0029] Furthermore, the cooling device includes a primary filter 7, a centrifugal fan 2, and a heat exchanger 5 connected in sequence inside the housing.

[0030] The primary filter 7 is used to remove dust from the air, improve the cooling efficiency of subsequent cooling components (such as heat exchanger 5), reduce dust accumulation, protect internal components, and extend the service life of the equipment.

[0031] Centrifugal fan 2 pressurizes the air to ensure that the air can pass through the subsequent heat exchanger 5 more effectively, thereby improving heat exchange efficiency and accelerating the cooling process.

[0032] Heat exchanger 5 uses refrigerant for heat exchange, cooling the flowing hot air and effectively reducing the air temperature.

[0033] Furthermore, a compressor 6 and a condenser 4 are installed on the right side of the heat exchanger 5; the compressor 6 provides the power for the refrigeration cycle, compresses the refrigerant, and enables it to achieve efficient heat exchange in the heat exchanger 5. The compressor 6 ensures the normal operation of the cooling device and provides low-temperature refrigerant to the heat exchanger 5; the condenser 4 cools and condenses the high-temperature and high-pressure refrigerant gas discharged from the compressor 6 into a liquid, while dissipating heat to the surrounding environment.

[0034] Furthermore, the bottom of the air duct 1 is equipped with a return air inlet connected to the primary filter 7, and the side of the main return air inlet is equipped with a manual air valve 8. The air outlet of the heat exchanger 5 is connected to the air outlet hole set on the wall. The manual air valve 8 is used to adjust the air volume, reduce excessive return air, optimize energy consumption, and reduce noise. The air outlet hole is used to return the cooled air to the room, provide the required cooling air for the frequency converter, and maintain a suitable indoor temperature.

[0035] Furthermore, the drive motors of centrifugal fan 2 and compressor 6 adopt a fully enclosed structure with an IP55 protection rating. The motors are capable of necessary washing and long-term outdoor use. With their excellent dustproof and waterproof performance, this device can be widely used in various industrial environments, including factory workshops, outdoor equipment, food processing, and agriculture and animal husbandry.

[0036] Furthermore, the cooling device is equipped with a fault detection system for real-time monitoring of its operating status to ensure the reliability of equipment operation and the safety of operators. This device can monitor various key parameters of the equipment in real time, such as the current, voltage, temperature, and speed of the motor and fan, as well as the temperature and pressure inside the cooling device. Once any parameter is detected to exceed the preset safety range, or the equipment malfunctions (such as fan overload or motor stall), the system will automatically trigger the alarm mechanism and immediately initiate corresponding emergency measures.

[0037] Furthermore, an electrical control box is installed next to the compressor 6 to control the operation of the cooling device. The electrical control box can control the operating status of the cooling device, realize the automated management and control of the cooling device, and improve operating efficiency and reliability.

[0038] Furthermore, an evaporator is also installed next to the condenser 4. The evaporator works together with the heat exchanger 5 to absorb heat more efficiently, thereby improving refrigeration efficiency and enhancing the cooling effect.

[0039] Work steps:

[0040] First, the heat generated by the high-voltage frequency converter is discharged by the exhaust fan on the top of its 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 in a unified manner through the exhaust pipe. The other end of the exhaust pipe is connected to the air guide pipe 1 of the cooling device.

[0041] Under normal operating conditions, the electric exhaust valve 3 remains closed; the hot air first passes through the primary filter 7 to filter out larger dust particles. After the initial filtration is completed, the hot air is pressurized by the centrifugal fan 2 to increase the wind speed and air volume, so as to ensure more efficient passage through the subsequent heat exchanger 5.

[0042] The pressurized hot air enters the heat exchanger 5, inside which are arranged refrigerant pipes. The refrigeration cycle system consisting of the compressor 6 and the condenser 4 cools the refrigerant in the pipes. When the hot air flows through the heat exchanger 5, it transfers heat to the low-temperature refrigerant in the pipes, thereby lowering its own temperature. The condenser 4 uses an air-cooled heat dissipation method, cooling and condensing the high-temperature and high-pressure refrigerant gas discharged from the compressor 6 into a liquid, and dissipating the heat to the surrounding environment.

[0043] Finally, the cooled air, after being cooled by the heat exchanger 5, is sent back to the inverter room, thus forming a closed-loop cooling system. A manual air valve 8 is provided on the return air vent side, which is used to flexibly adjust the return air volume according to actual needs to avoid excessive return air. At the same time, this also helps to reduce noise caused by excessive wind speed.

[0044] Since the equipment on site is a large industrial production unit that needs to operate continuously for a long time, it is necessary to fully consider the emergency situation when the cooling device fails and stops. If the cooling device cannot operate normally and the heat of the frequency converter cannot be effectively dissipated, it will have an adverse effect on the normal operation of the frequency converter.

[0045] To this end, the cooling device is designed with automatic detection and fault diagnosis functions, and is also equipped with corresponding emergency measures to ensure that a failure of the cooling device will not affect the operation of the frequency converter.

[0046] The emergency function of the cooling device includes the following two aspects: When the centrifugal fan 2 malfunctions due to overload or other reasons, the device will issue an alarm through the touch screen and stop the operation of the centrifugal fan 2. At the same time, the system will automatically open the electric exhaust valve 3 and start the emergency exhaust function. When the device enters the emergency exhaust state, since the indoor environment is under negative pressure, outdoor normal temperature air will enter the room through the fresh air filter port of the electric fresh air valve 9, thereby achieving emergency cooling. At the same time, the electric exhaust valve 3 and the electric fresh air valve 9 are linked for control. That is, when the electric exhaust valve 3 is opened, the system will automatically open the electric fresh air valve 9 to ensure air circulation.

[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. An integrated air-cooled inverter cooling device, comprising a high-voltage inverter installed indoors, characterized in that: The high-voltage frequency converter is equipped with multiple exhaust fans on top. The exhaust pipes of the exhaust fans are connected to the air guide pipe (1). The right end of the air guide pipe (1) passes through the right side wall and is equipped with an electric exhaust valve (3). An electric fresh air valve (9) is installed on the left side wall of the high-voltage frequency converter. The electric fresh air valve (9) and the electric exhaust valve (3) open and close synchronously. The cooling device includes a primary filter (7), a centrifugal fan (2) and a heat exchanger (5) connected in sequence inside the box. A compressor (6) and a condenser (4) are installed on the right side of the heat exchanger (5). The bottom of the air duct (1) is provided with a return air port that communicates with the primary filter (7). A manual air valve (8) is provided on the side of the return air port. The air outlet of the heat exchanger (5) is connected to the air outlet hole set on the wall.

2. The integrated air-cooled inverter cooling device according to claim 1, characterized in that: The drive motors of the centrifugal fan (2) and compressor (6) adopt a fully enclosed structure, and their protection level meets the IP55 standard.

3. The integrated air-cooled inverter cooling device according to claim 1, characterized in that: The cooling device is equipped with a fault detection system for real-time monitoring of its operating status.

4. The integrated air-cooled inverter cooling device according to claim 1, characterized in that: An electrical control box for controlling the operation of the cooling device is installed next to the compressor (6).

5. The integrated air-cooled inverter cooling device according to claim 1, characterized in that: An evaporator is installed next to the condenser (4) and operates therewith.

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