A water-cooled frequency converter

Abstract

This utility model belongs to the field of frequency converter technology and discloses a water-cooled frequency converter, including a main shell sheet metal, a water-cooled heat sink fixedly connected to the inner bottom surface of the main shell sheet metal, a module assembly fixedly connected to the upper surface of the water-cooled heat sink, a Hall effect sensor assembly fixedly connected to the upper surface of the water-cooled heat sink, a rectifier assembly fixedly connected to the upper surface of the water-cooled heat sink, a capacitor assembly fixedly connected to the inner bottom surface of the main shell sheet metal, a control board fixedly connected to the upper surface of the main shell sheet metal, a drive board installed inside the main shell sheet metal, and an upper sheet metal fixedly connected to the upper surface of the main shell sheet metal. This utility model replaces the existing air-cooling method of frequency converters with water-cooled heat sinks, effectively addressing the issue of frequency converters easily shutting down due to high temperature and poor air circulation. It improves the heat dissipation efficiency of frequency converters in high-temperature environments, reduces the probability of high-temperature protection shutdown, increases module lifespan, and reduces the chance of module explosion.

Description

Technical Field

[0001] This utility model belongs to the field of frequency converter technology, specifically a water-cooled frequency converter. Background Technology

[0002] With the rapid development of industry, frequency converters are increasingly being widely used across various sectors. However, many industrial environments are harsh, with limited installation space, high temperatures, and poor air circulation. Frequency converters typically use aluminum profile finned heat sinks combined with fans for air cooling. In high-temperature, poorly ventilated conditions, the heat dissipation capacity of the frequency converter decreases significantly, potentially causing it to shut down due to overheating protection, impacting production and safety. Conventional frequency converters rely on air cooling, requiring the design of air ducts, and the heat sink fins themselves also take up space, resulting in a relatively large overall size for the frequency converter.

[0003] Meanwhile, a frequency converter with application number CN202421358806.3 includes a main body, the main body including a lower housing and a control circuit board, the control circuit board being mounted on the lower housing, the control circuit board integrating electronic components and wiring terminals, the wiring terminals having wiring portions; an upper housing, the upper housing including a cover and a wiring cover, the cover being connected to the lower housing, the cover and the lower housing forming a first encapsulation, the electronic components being encapsulated inside the first encapsulation, the cover having a clearance opening, at least the wiring portion of the wiring terminals passing through the clearance opening and exposed outside the cover, the wiring cover being connected to the cover, the wiring cover and the cover forming a second encapsulation, the wiring terminals being encapsulated inside the second encapsulation, the second encapsulation having a wire passage, the wire passage being configured for connecting wire harnesses to pass through.

[0004] However, the following problems were found in the implementation of the relevant technology: its large size and poor heat dissipation make it easy for the frequency converter to overheat and shut down in high-temperature environments with poor air circulation.

[0005] Therefore, we propose a water-cooled frequency converter. Utility Model Content

[0006] To address the problems mentioned in the background section, this utility model provides a water-cooled frequency converter, which effectively solves the problems of limited installation and heat dissipation for frequency converters of the same power, and is suitable for frequency converters with small installation space and high ambient temperature.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a water-cooled frequency converter, comprising a main housing sheet metal, a water-cooled heat sink fixedly connected to the inner bottom surface of the main housing sheet metal, a module assembly fixedly connected to the upper surface of the water-cooled heat sink, a Hall effect component fixedly connected to the upper surface of the water-cooled heat sink, a rectifier assembly fixedly connected to the upper surface of the water-cooled heat sink, a capacitor assembly fixedly connected to the inner bottom surface of the main housing sheet metal, a control board fixedly connected to the upper surface of the main housing sheet metal, a drive board installed inside the main housing sheet metal, an upper sheet metal fixedly connected to the upper surface of the main housing sheet metal, a faceplate fixedly connected to the upper surface of the upper sheet metal, a copper plate installed inside the main housing sheet metal, and a braking resistor, a contactor, and a power supply board fixedly connected inside the main housing sheet metal.

[0008] Preferably, the control panel is located inside the sheet metal cover, and a human-computer interaction keyboard is provided on the sheet metal cover.

[0009] Preferably, a main sheet metal support plate is fixedly connected inside the main housing sheet metal, and the main sheet metal support plate is fixedly connected to the capacitor assembly.

[0010] Preferably, the braking resistor is fixedly connected to the main sheet metal support plate, and the contactor is fixedly connected to the main sheet metal support plate.

[0011] Preferably, the main housing sheet metal is provided with a water outlet and a water inlet, the water outlet and the water inlet are connected to the water-cooled radiator, and the water outlet and the water inlet are provided with sealing elements.

[0012] Preferably, heat dissipation windows are provided on both sides of the main housing sheet metal, and filters are provided on the heat dissipation windows.

[0013] Preferably, a mounting bracket is fixedly connected to the outer surface of the main housing sheet metal.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model replaces the existing air-cooled heat dissipation method of frequency converters with a water-cooled heat sink, effectively addressing the issue of frequency converters easily shutting down due to high temperature and poor air circulation. It improves the heat dissipation efficiency of frequency converters in high-temperature environments, reduces the probability of high-temperature protection shutdown, increases module lifespan, and reduces the chance of module explosion. Simultaneously, it eliminates the need for fans and air ducts in the frequency converter design, reducing fan failure-induced shutdown alarms. Furthermore, the water-cooled frequency converter is smaller than other frequency converters of the same power, making it easier to install in confined spaces. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the internal structure of the shell of this utility model; Figure 4 This is a cross-sectional structural diagram of the present invention.

[0016] In the diagram: 1. Main housing sheet metal; 2. Capacitor assembly; 3. Control board; 4. Driver board; 5. Water-cooled radiator; 6. Module assembly; 7. Hall effect assembly; 8. Human-machine interface keyboard; 9. Front cover sheet metal; 10. Upper sheet metal; 11. Bronze plate; 12. Braking resistor; 13. Contactor; 14. Rectifier assembly; 15. Power board; 16. Main sheet metal support plate; 17. Mounting bracket; 18. Water outlet; 19. Water inlet. Detailed Implementation

[0017] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1 to 4 As shown, this utility model provides a water-cooled frequency converter, including a main housing sheet metal 1 for providing overall structural support and protection. A water-cooled radiator 5 is fixedly connected to the inner bottom surface of the main housing sheet metal 1 to achieve efficient heat dissipation and protect the core components of the frequency converter. The water-cooled radiator 5 circulates water through the outlet 18 and the inlet 19 to remove the heat generated during operation. The temperature of the water-cooled radiator 5 is maintained below a predetermined temperature as the water flows, thereby ensuring that the rectifier assembly 14 and the module assembly 6 operate within a safe and stable temperature range. The module assembly 6, the core working unit, is fixedly connected to the upper surface of the water-cooled radiator 5. A Hall effect sensor 7 is fixedly connected to the upper surface of the water-cooled radiator 5. The rectifier assembly 6 is also fixedly connected to the upper surface of the water-cooled radiator 5. Component 14 rectifies AC power into DC power to provide a stable DC power source for subsequent frequency conversion. A capacitor assembly 2 is fixedly connected to the inner bottom surface of the main housing sheet metal 1. A control board 3 is fixedly connected to the upper surface of the main housing sheet metal 1 to realize the control logic and operation of the frequency converter. A drive board 4 is installed inside the main housing sheet metal 1 to drive power components and control the speed and direction of the motor. An upper sheet metal 10 is fixedly connected to the upper surface of the main housing sheet metal 1. A face cover sheet metal 9 is fixedly connected to the upper surface of the upper sheet metal 10. A copper plate 11 is installed inside the main housing sheet metal 1. A braking resistor 12, a contactor 13, and a power board 15 are fixedly connected inside the main housing sheet metal 1. The braking resistor 12, the contactor 13, and the Hall effect component 7 are auxiliary functional components, such as braking, sensing, and switch control.

[0019] Specifically, the control panel 3 is located inside the faceplate 9, and the faceplate 9 is equipped with a human-computer interaction keyboard 8.

[0020] Furthermore, a main sheet metal support plate 16 is fixedly connected inside the main housing sheet metal 1, and the main sheet metal support plate 16 is fixedly connected to the capacitor assembly 2.

[0021] Furthermore, the braking resistor 12 is fixedly connected to the main sheet metal support plate 16, and the contactor 13 is fixedly connected to the main sheet metal support plate 16.

[0022] It is worth noting that the main housing sheet metal 1 is provided with a water outlet 18 and a water inlet 19. The water outlet 18 and the water inlet 19 are connected to the water-cooled radiator 5, and the water outlet 18 and the water inlet 19 are provided with sealing elements.

[0023] It is worth noting that heat dissipation windows are provided on both sides of the main housing sheet metal 1, and filters are installed on the heat dissipation windows.

[0024] It is worth mentioning that the outer surface of the main housing sheet metal 1 is fixedly connected with a mounting bracket 17.

[0025] Among them, capacitor assembly 2, control board 3, drive board 4, water-cooled radiator 5, module assembly 6, Hall effect assembly 7, human-machine interface keyboard 8, braking resistor 12, contactor 13, rectifier assembly 14, and power board 15 are existing technologies and will not be described in detail. Meanwhile, this utility model also includes a power supply, controller, and switch, etc., which are not the main technical points of this patent and will not be described in detail. The "front, back, left, and right" perspectives of this device are... Figure 1 The direction shown in the diagram is the reference.

[0026] Working principle: Module component 6 and rectifier component 14 are installed on water-cooled radiator 5. Water-cooled radiator 5 circulates water through outlet 18 and inlet 19, carrying away the heat generated during operation. The temperature of water-cooled radiator 5 is maintained below the predetermined temperature as the water flows, thus ensuring that rectifier component 14 and module component 6 operate within a safe and stable temperature range. Water-cooled radiator 5 absorbs the heat emitted by the components, conducts hot water out and discharges it through outlet 18, while cooling water enters inlet 19 to continue circulating. Through continuous water flow, heat dissipation efficiency is maintained, preventing temperature rise from affecting the normal operation of the equipment. After AC power is input, rectifier component 14 converts the power to DC power, providing a stable voltage for the conversion module in the frequency converter. Control board 3 adjusts the signal output by drive board 4 according to user instructions and sensor signals, controlling the inverter module (integrated in module component 6) to drive the motor. All control and protection components cooperate to ensure the normal, continuous, and safe operation of the overall system.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water-cooled frequency converter, comprising a main housing sheet metal (1), characterized in that: A water-cooled radiator (5) is fixedly connected to the inner bottom surface of the main shell sheet metal (1). A module assembly (6) is fixedly connected to the upper surface of the water-cooled radiator (5). A Hall assembly (7) is fixedly connected to the upper surface of the water-cooled radiator (5). A rectifier assembly (14) is fixedly connected to the upper surface of the water-cooled radiator (5). A capacitor assembly (2) is fixedly connected to the inner bottom surface of the main shell sheet metal (1). A control board (3) is fixedly connected to the upper surface of the main shell sheet metal (1). A drive board (4) is installed inside the main shell sheet metal (1). An upper sheet metal (10) is fixedly connected to the upper surface of the main shell sheet metal (1). A faceplate sheet metal (9) is fixedly connected to the upper surface of the upper sheet metal (10). A copper plate (11) is installed inside the main shell sheet metal (1). A braking resistor (12), a contactor (13), and a power board (15) are fixedly connected inside the main shell sheet metal (1).

2. The water-cooled frequency converter according to claim 1, characterized in that: The control panel (3) is located inside the sheet metal cover (9), and a human-computer interaction keyboard (8) is provided on the sheet metal cover (9).

3. A water-cooled frequency converter according to claim 1, characterized in that: The main sheet metal housing (1) is fixedly connected to a main sheet metal support plate (16), and the main sheet metal support plate (16) is fixedly connected to the capacitor assembly (2).

4. A water-cooled frequency converter according to claim 1, characterized in that: The braking resistor (12) is fixedly connected to the main sheet metal support plate (16), and the contactor (13) is fixedly connected to the main sheet metal support plate (16).

5. A water-cooled frequency converter according to claim 1, characterized in that: The main shell sheet metal (1) is provided with a water outlet (18) and a water inlet (19). The water outlet (18) and the water inlet (19) are connected to the water-cooled radiator (5). The water outlet (18) and the water inlet (19) are provided with sealing elements.

6. A water-cooled frequency converter according to claim 1, characterized in that: The main housing sheet metal (1) is provided with heat dissipation windows on both sides, and the heat dissipation windows are provided with filters.

7. A water-cooled frequency converter according to claim 1, characterized in that: The outer surface of the main housing sheet metal (1) is fixedly connected to a mounting bracket (17).

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