A frequency converter

Abstract

The present application relates to the field of heat dissipation control technology for frequency converters, and in particular to a frequency converter, which includes multiple heat dissipation zones, heat dissipation pipes corresponding to the heat dissipation zones, connecting pipes, and an execution module. The execution module is used to accurately control the flow direction and flow rate of the cooling medium in each connecting pipe, and the temperature measurement module and the control module are combined to dynamically adjust the cooling strategy based on the real-time temperature value and the preset mechanism. The present application can effectively improve the heat dissipation efficiency, reduce energy consumption, and ensure the stability and reliability of the frequency converter operation, solving the problem of the single traditional heat dissipation method and slow response.

Description

Technical Field

[0001] The present application relates to the technical field of inverter heat dissipation, and in particular to an inverter. Background Art

[0002] With the rapid development of industrial automation and intelligent manufacturing, built-in adjustable speed mini inverters, as core motor drive components, play a vital role in modern industrial equipment. Such products are widely used in various scenarios that require precise speed control, such as CNC machine tools, robots, and various automated production lines. Its market demand continues to grow and has become one of the important indicators of the level of electrical transmission technology. At present, many well-known companies in the international market have launched mature built-in mini inverter products, which occupy a major share of the high-end market with their excellent performance. At the same time, although domestic companies started relatively late in this field, they have gradually formed their own characteristics under the impetus of policy support and technological progress, and are constantly narrowing the gap with the international leading level.

[0003] In order to deal with the heating problem under high load conditions, the industry usually adopts a variety of heat dissipation methods to maintain the working stability of the inverter. Common measures include natural air cooling, forced air cooling and liquid cooling. Among them, natural air cooling mainly relies on air flow to remove heat, with a simple structure but low efficiency; forced air cooling accelerates air flow exchange through fans, which can improve heat dissipation capacity to a certain extent, but is still limited by space layout and noise issues; and liquid cooling is increasingly introduced into compact designs due to its efficient heat conduction characteristics. The specific implementation forms include direct contact liquid circulation refrigeration or indirect heat exchange pipeline layout and other solutions.

[0004] However, the above traditional heat dissipation methods generally have limitations when facing highly integrated built-in mini inverters. In particular, there is a bottleneck in ensuring effective heat dissipation while pursuing miniaturization, resulting in problems such as high temperature accumulation that may cause component failure or shorten service life. Therefore, how to further improve heat dissipation efficiency in a limited space has become a key technical problem that needs to be solved urgently. Summary of the invention

[0005] In order to achieve precise local heat dissipation, the present application provides a frequency converter.

[0006] The inverter provided in this application adopts the following technical solution: A frequency converter includes a heat dissipation area, a heat dissipation pipe, a connecting pipe and an execution module. The heat dissipation area is provided with a plurality of The heat dissipation pipes and the heat dissipation areas correspond to each other, and all the heat dissipation pipes are interconnected. The connecting pipes and the heat dissipation pipes correspond to each other one by one, and the connecting pipes are connected to the corresponding heat dissipation pipes. The execution module is used to control the flow direction and flow rate of the cooling medium in any connecting pipe. The flow direction of the cooling medium in the connecting pipe includes flowing into the heat dissipation pipe, flowing out of the heat dissipation pipe, and interrupting the flow.

[0007] By adopting the above technical solution, multiple heat dissipation zones are set up, and each heat dissipation zone is cooled by the heat dissipation pipe. The execution module flexibly controls the flow direction and flow rate of the cooling medium, and can accurately adjust the heat dissipation effect of each heat dissipation zone under different working conditions, realizing efficient heat dissipation management and precise local heat dissipation.

[0008] It significantly improves the stability and reliability of the inverter under high load conditions, extends the service life of the equipment, and also lays the foundation for subsequent intelligent temperature control strategies.

[0009] Preferably, it includes a temperature measurement module and a control module, The temperature measurement module and the heat dissipation zone correspond one to one, and the temperature measurement module is used to measure and output the real-time temperature value of the corresponding heat dissipation zone. The control module controls the execution module based on the real-time temperature value and the preset mechanism.

[0010] By adopting the above technical solution, accurate monitoring and dynamic control of the temperature of the inverter heat dissipation zone can be achieved. The temperature measurement module corresponds to the heat dissipation zone one by one, and can accurately obtain the real-time temperature value of each heat dissipation zone. Combined with the control module and the preset mechanism, the flow direction and flow rate of the cooling medium can be flexibly adjusted according to the actual temperature data, thereby effectively improving the heat dissipation efficiency and ensuring the stable operation of the inverter under high load conditions.

[0011] Intelligent temperature management improves system reliability, optimizes energy efficiency, and provides support for the miniaturization and high-performance design of inverters.

[0012] Preferably, the preset mechanism includes: The cooling medium in the connecting pipe of the heat dissipation zone corresponding to the maximum real-time temperature value is controlled to flow into the heat dissipation pipe.

[0013] By adopting the above technical solution, it is possible to accurately identify the heat dissipation zone with the highest temperature among multiple heat dissipation zones, and increase the cooling medium inflow to the heat dissipation zone in a targeted manner, thereby realizing dynamic adjustment of the cooling medium flow direction and maximizing the performance advantages of the heat dissipation system.

[0014] Effectively improve the response speed and heat dissipation efficiency of the cooling system, ensuring that the core components of the inverter are always within a safe operating temperature range during high-load operation, thereby improving the stability and reliability of the inverter.

[0015] Preferably, the preset mechanism includes: The preset temperature value is calculated based on the maximum real-time temperature value. The flow direction of the cooling medium in the connecting pipe corresponding to the heat dissipation zone whose real-time temperature value is lower than the preset temperature value is controlled to be cut off.

[0016] By adopting the above technical solution, when the real-time temperature value of the heat dissipation zone is lower than the preset temperature value calculated according to the maximum real-time temperature value, the supply of cooling medium to the corresponding heat dissipation zone is stopped, which effectively reduces unnecessary cooling operations, thereby reducing energy consumption and improving the energy utilization efficiency of the system.

[0017] In particular, under low load or low temperature conditions, reducing the flow of cooling medium can also avoid waste of resources caused by overcooling, further improving the economy and reliability of the entire cooling system.

[0018] In addition, the preset temperature can be the predicted temperature of the cooling medium after it flows through the heat dissipation zone with the highest temperature, and the flow cut-off operation can prevent the heated cooling medium from transferring heat to the heat dissipation zone with a low temperature.

[0019] Preferably, the preset mechanism includes: Sort multiple real-time temperature values ​​from large to small. Control the cooling medium in the connecting pipe of the heat dissipation zone corresponding to the real-time temperature value ranked from 1 to N to flow into the heat dissipation pipe, The cooling medium in the connecting pipes of the heat dissipation zones corresponding to the real-time temperature values ​​ranked from N+1 to 2N is controlled to flow out of the heat dissipation pipes.

[0020] By adopting the above technical solution, the effect of accurately allocating the flow direction of the cooling medium according to the temperature conditions of different heat dissipation zones can be achieved.

[0021] By sorting multiple real-time temperature values, the cooling medium is preferentially directed to the first N heat dissipation zones with higher temperatures to enhance the heat dissipation capacity, while the last N heat dissipation zones with relatively lower temperatures are set to the outflow state, thereby forming an effective heat exchange cycle.

[0022] The above-mentioned dynamic control method improves the heat dissipation efficiency, ultimately ensuring the stable operation of the entire inverter under high load conditions and extending its service life.

[0023] Preferably, the preset mechanism also includes: Control the cooling medium flow rate in the connecting pipe of the heat dissipation zone corresponding to the real-time temperature value ranked from 1 to N to be maximum, The cooling medium flow in the connecting pipe of the heat dissipation zone corresponding to the real-time temperature values ​​ranked from N+1 to 2N is controlled to decrease according to the ranking.

[0024] By adopting the above technical solution, refined flow control of the inverter cooling system can be achieved.

[0025] By sorting the real-time temperature values ​​and adjusting the cooling medium flow rate according to the sorting results, the high-temperature area obtains the maximum flow rate to enhance the heat dissipation effect, while the lower temperature area is allocated a gradually decreasing flow rate as needed, thereby effectively improving the heat dissipation efficiency and saving energy.

[0026] Further optimize resource utilization to avoid unnecessary energy loss while ensuring sufficient heat dissipation in key areas.

[0027] Preferably, the execution module includes two execution pumps. The outlet of one of the actuator pumps is communicated with the communicating pipe, and the inlet of the other actuator pump is communicated with the communicating pipe.

[0028] By adopting the above technical solution, two actuator pumps are provided and respectively connected to the connecting pipes, so as to realize accurate control of the flow direction and flow rate of the cooling medium.

[0029] This allows the cooling medium to flexibly adjust its flow direction and speed in the heat pipe, thereby effectively improving the response speed and control accuracy of the heat dissipation system.

[0030] Enhance the adaptability of the inverter under different working conditions, ensure that high-temperature areas obtain sufficient cooling resources, while reducing unnecessary energy consumption in low-temperature areas, ultimately improving overall heat dissipation efficiency and extending equipment life.

[0031] Preferably, the actuator pump comprises a pump housing, an electromagnet, a magnet and two valve flaps. The pump housing is elastic and has an outlet and an inlet. The electromagnet and magnet are connected to both sides of the pump housing. The two valve flaps are respectively located at the outlet and the inlet.

[0032] By adopting the above technical solution, the structure of the executive pump is simple, which is convenient for miniaturization, has low requirements for installation space and position, and is conducive to miniaturization and compact structure of the frequency converter.

[0033] In summary, the present application includes at least one of the following beneficial technical effects: By setting up multiple heat dissipation zones and corresponding heat dissipation pipes and connecting pipes, and using the execution module to accurately control the flow direction and flow rate of the cooling medium, the local heat dissipation capacity can be strengthened in a targeted manner, effectively solving the heat dissipation bottleneck problem under high load conditions; Based on the real-time temperature value fed back by the temperature measurement module and combined with the preset mechanism, the cooling strategy of each heat dissipation zone is dynamically adjusted to realize the function of allocating cooling resources on demand, significantly improving the overall efficiency of the heat dissipation system; The distribution state and flow rate of the cooling medium are rationally planned using sorting logic, which not only ensures effective cooling in high-temperature areas but also avoids energy waste, thereby improving product reliability and economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic diagram of the inverter.

[0035] Figure 2 It is a schematic diagram of components such as heat dissipation pipes and connecting pipes.

[0036] Figure 3 is a schematic diagram of the actuator pump.

[0037] Explanation of the reference numerals: 1. body; 11. heat dissipation area; 21. heat dissipation pipe; 22. connecting pipe; 3. actuator pump; 31. pump housing; 32. electromagnet; 33. magnet; 34. valve flap. DETAILED DESCRIPTION

[0038] The present application is further described in detail below in conjunction with the accompanying drawings.

[0039] Reference Figure 1 and Figure 2 , an embodiment of the present application discloses a frequency converter, including a main body 1.

[0040] The body 1 is provided with a plurality of heat dissipation zones 11. In the attached figure, the number of heat dissipation zones 11 is taken as 4 for example. The plurality of heat dissipation zones 11 may cover the entire body 1, or may only cover a region with a large amount of heat (such as a circuit board). The area size and shape of the heat dissipation zones 11 may be the same or different.

[0041] The frequency converter further includes a heat dissipation pipe 21 and a connecting pipe 22 .

[0042] The heat dissipation pipes 21 and the heat dissipation areas 11 correspond to each other, and all the heat dissipation pipes 21 are interconnected. In the figure: 4 heat dissipation pipes 21 are connected end to end.

[0043] The connecting pipe 22 and the heat dissipation pipe 21 correspond to each other, and the connecting pipe 22 is connected to the corresponding heat dissipation pipe 21. In the figure: one end of the connecting pipe 22 is connected to the middle part of the corresponding heat dissipation pipe 21.

[0044] The frequency converter further includes an execution module. The execution module is used to control the flow direction and flow rate of the cooling medium in any connecting pipe 22. The flow direction of the cooling medium in the connecting pipe 22 includes flowing into the heat dissipation pipe 21, flowing out of the heat dissipation pipe 21, or interrupting the flow.

[0045] Specifically: the execution module and the connecting pipe 22 correspond one to one; the execution module includes two execution pumps 3; the outlet of one execution pump 3 is connected to the connecting pipe 22, and the inlet of the other execution pump 3 is also connected to the connecting pipe 22; the inlet of one execution pump 3 and the outlet of the other execution pump 3 are both connected to the cooling medium source; when the cooling medium is a coolant, the cooling medium source can be a water tank.

[0046] In the present application embodiment: refer to Figure 3 The actuator pump 3 includes a pump housing 31, an electromagnet 32, a magnet 33 and two valve flaps 34; the pump housing 31 is elastic, and the pump housing 31 has an outlet and an inlet; the electromagnet 32 ​​and the magnet 33 are connected to both sides of the pump housing 31; the two valve flaps 34 are respectively located at the outlet and the inlet; the valve flap 34 located at the outlet is used to allow the cooling medium in the pump housing 31 to flow out in one direction; the valve flap 34 located at the inlet is used to allow the cooling medium to flow into the pump housing 31 in one direction.

[0047] The frequency converter also includes a temperature measurement module and a control module.

[0048] The temperature measurement module corresponds to the heat dissipation zone 11 one by one, and the temperature measurement module is used to measure and output the real-time temperature value of the corresponding heat dissipation zone 11. For example, the temperature measurement module can adopt a temperature sensor.

[0049] The control module controls the execution module based on the real-time temperature value and the preset mechanism.

[0050] The default mechanisms include: S10, controlling the cooling medium in the connecting pipe 22 of the heat dissipation zone 11 corresponding to the maximum real-time temperature value to flow into the heat dissipation pipe 21 with a maximum flow rate; S20, calculating a preset temperature value according to the maximum real-time temperature value; S3, sorting all M real-time temperature values ​​higher than the preset temperature value from large to small; S32, controlling the cooling medium in the connecting pipe 22 of the heat dissipation zone 11 corresponding to the real-time temperature value ranked from 1 to N to flow into the heat dissipation pipe 21, with the flow rate being the maximum; S33, controlling the cooling medium in the connecting pipe 22 of the heat dissipation zone 11 corresponding to the real-time temperature values ​​ranked from N+1 to 2N to flow out of the heat dissipation pipe 21, and the flow rate decreases according to the ranking; S40, controlling the flow direction of the cooling medium in the connecting pipe 22 corresponding to the heat dissipation zone 11 whose real-time temperature value is lower than the preset temperature value to be cut off.

[0051] in: If M is an even number, then 2N=M; If M is an odd number, then 2N=M+1; corresponding to the real-time temperature value ranked 2N, the heat dissipation area 11 is empty.

[0052] For example, if M=3, then Step S32 is to control the cooling medium in the connecting pipe 22 of the heat dissipation zone 11 corresponding to the real-time temperature value ranked from 1 to 2 to flow into the heat dissipation pipe 21 with a maximum flow rate; Step S33 is to control the cooling medium in the connecting pipe 22 of the heat dissipation zone 11 corresponding to the real-time temperature value ranked as 3 to flow out of the heat dissipation pipe 21 with a maximum flow rate.

[0053] For example, M=7, then Step S32 is to control the cooling medium in the connecting pipe 22 of the heat dissipation zone 11 corresponding to the real-time temperature value ranked from 1 to 4 to flow into the heat dissipation pipe 21 with a maximum flow rate; Step S33 is to control the cooling medium in the connecting pipe 22 of the heat dissipation zone 11 corresponding to the real-time temperature value ranked from 5 to 7 to flow out of the heat dissipation pipe 21, and the flow rate decreases according to the ranking.

[0054] It should be noted that: if M=1, the cooling medium in the connecting pipe 22 of the heat dissipation zone 11 corresponding to the real-time temperature value ranked 1 is controlled to flow into the heat dissipation pipe 21 with a maximum flow rate; at this time, the cooling medium flows into the heat dissipation pipe 21, and the cooling medium pressure in the heat dissipation pipe 21 increases until the cooling medium pressure in the heat dissipation pipe 21 causes the valve flap 34 of the actuator pump 3 (the inlet of which is connected to the connecting pipe 22) to open, and the cooling medium in the heat dissipation pipe 21 flows out or seeps out.

[0055] The implementation principle of a frequency converter in the embodiment of the present application is as follows: by providing a plurality of heat dissipation zones 11 and corresponding heat dissipation pipes 21 and connecting pipes 22, and by using an execution module to accurately control the flow direction and flow rate of the cooling medium, the local heat dissipation capacity can be enhanced in a targeted manner, and the heat dissipation bottleneck problem under high load conditions can be effectively solved; Based on the real-time temperature value fed back by the temperature measurement module and in combination with the preset mechanism, the cooling strategy of each heat dissipation zone 11 is dynamically adjusted to realize the function of allocating cooling resources on demand, thus significantly improving the overall efficiency of the heat dissipation system; The distribution state and flow rate of the cooling medium are rationally planned using sorting logic, which not only ensures effective cooling in high-temperature areas but also avoids energy waste, thereby improving product reliability and economy.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A frequency converter, characterized in that: It comprises a heat dissipation area (11), a heat dissipation pipe (21), a connecting pipe (22) and an execution module. The heat dissipation area (11) is provided with a plurality of The heat dissipation pipes (21) and the heat dissipation areas (11) correspond to each other, and all the heat dissipation pipes (21) are interconnected. The connecting pipe (22) and the heat dissipation pipe (21) correspond to each other one by one, and the connecting pipe (22) is connected to the corresponding heat dissipation pipe (21). The execution module is used to control the flow direction and flow rate of the cooling medium in any connecting pipe (22). The flow direction of the cooling medium in the connecting pipe (22) includes flowing into the heat dissipation pipe (21), flowing out of the heat dissipation pipe (21), and interrupting the flow.

2. A frequency converter according to claim 1, characterized in that: Including temperature measurement module and control module, The temperature measurement module and the heat dissipation zone (11) correspond one to one, and the temperature measurement module is used to measure and output the real-time temperature value of the corresponding heat dissipation zone (11). The control module controls the execution module based on the real-time temperature value and the preset mechanism.

3. A frequency converter according to claim 2, characterized in that: The preset mechanism includes: The cooling medium in the connecting pipe (22) of the heat dissipation zone (11) corresponding to the maximum real-time temperature value is controlled to flow into the heat dissipation pipe (21).

4. A frequency converter according to claim 2, characterized in that: The preset mechanism includes: The preset temperature value is calculated based on the maximum real-time temperature value. The flow direction of the cooling medium in the connecting pipe (22) corresponding to the heat dissipation zone (11) whose real-time temperature value is lower than the preset temperature value is controlled to be cut off.

5. A frequency converter according to claim 2, characterized in that: The preset mechanism includes: Sort multiple real-time temperature values ​​from large to small. Controlling the cooling medium in the connecting pipe (22) of the heat dissipation zone (11) corresponding to the real-time temperature value ranked from 1 to N to flow into the heat dissipation pipe (21), The cooling medium in the connecting pipe (22) of the heat dissipation zone (11) corresponding to the real-time temperature values ​​ranked from N+1 to 2N is controlled to flow out of the heat dissipation pipe (21).

6. A frequency converter according to claim 5, characterized in that: The preset mechanism also includes: Controlling the cooling medium flow rate in the connecting pipe (22) of the heat dissipation zone (11) corresponding to the real-time temperature value ranked from 1 to N to be maximum, The cooling medium flow rate in the connecting pipe (22) of the heat dissipation zone (11) corresponding to the real-time temperature values ​​ranked from N+1 to 2N is controlled to decrease according to the ranking.

7. A frequency converter according to claim 1, characterized in that: The execution module comprises two execution pumps (3). The outlet of one of the actuating pumps (3) is connected to the connecting pipe (22), and the inlet of the other actuating pump (3) is connected to the connecting pipe (22).

8. A frequency converter according to claim 7, characterized in that: The actuator pump (3) comprises a pump housing (31), an electromagnet (32), a magnet (33) and two valve flaps (34). The pump housing (31) is elastic, and has an outlet and an inlet. The electromagnet (32) and the magnet (33) are connected to both sides of the pump housing (31). The two valve flaps (34) are respectively located at the outlet and the inlet.

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