A variable frequency drive cooling system

Abstract

The application discloses a variable frequency converter heat dissipation system, and relates to the technical field of variable frequency converters, which comprises a condenser, a gaseous medium main pipe, a liquid medium main pipe and a plurality of heat dissipation modules. The condenser is installed outside the cabinet of the variable frequency converter. The gaseous medium main pipe is communicated with the gaseous medium inlet of the condenser through a gaseous medium manifold. The liquid medium main pipe is communicated with the liquid medium outlet of the condenser through a liquid medium manifold. The plurality of heat dissipation modules are arranged in the variable frequency converter and between the gaseous medium main pipe and the liquid medium main pipe. Each heat dissipation module is communicated with the gaseous medium main pipe through at least two gas pipes, and is communicated with the liquid medium main pipe through at least two liquid pipes. When any pipe connected with the heat dissipation module is broken or needs to be regularly inspected, the integrity of the whole pipe system is not damaged, the normal work of the heat dissipation system is not affected, and the reliability of the variable frequency converter heat dissipation system is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of frequency converter technology, and more particularly to a frequency converter heat dissipation system. Background Technology

[0002] Inverters are key devices for motor speed control and energy saving, and their internal heat generation is a critical factor affecting the stability of equipment operation and the lifespan of components. Evaporative cooling systems are high-efficiency heat dissipation systems that rely on the intense heat exchange during the phase change of the medium to transfer heat.

[0003] In evaporative cooling systems, each power unit of the frequency converter is equipped with a heat dissipation module. However, when a fault occurs in any part of the frequency converter's heat dissipation system piping, it will affect the operation of the entire evaporative cooling system, necessitating improvement. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a frequency converter heat dissipation system.

[0005] This application provides a frequency converter heat dissipation system, including a condenser, a gaseous medium manifold, a liquid medium manifold, a gaseous medium main pipe, a liquid medium main pipe, and multiple heat dissipation modules. The condenser is installed outside the frequency converter cabinet and has a gaseous medium inlet and a liquid medium outlet. The gaseous medium main pipe is connected to the gaseous medium inlet of the condenser through the gaseous medium manifold, and the liquid medium main pipe is connected to the liquid medium outlet of the condenser through the liquid medium manifold. The multiple heat dissipation modules are all disposed inside the frequency converter and located between the gaseous medium main pipe and the liquid medium main pipe. Each heat dissipation module is connected to the gaseous medium main pipe through at least two gas pipes, and each heat dissipation module is connected to the liquid medium main pipe through at least two liquid pipes.

[0006] In some implementations, the gaseous medium header is located closer to the condenser than the liquid medium header.

[0007] In some implementations, the condenser is installed at the top of the inverter cabinet, the gaseous medium main pipe is installed at the top of the inner wall of the inverter cabinet, and the liquid medium main pipe is installed at the bottom of the inverter cabinet.

[0008] In some implementations, multiple heat dissipation modules are arranged in a row.

[0009] In some implementations, where the heat dissipation module is connected to the main gas medium pipe via two air pipes, the two air pipes connected to the heat dissipation module are arranged symmetrically with respect to the vertical centerline of the heat dissipation module.

[0010] In some implementations, where the heat dissipation module is connected to the main liquid medium pipe via two liquid pipes, the two liquid pipes connected to the heat dissipation module are arranged symmetrically relative to the vertical centerline of the heat dissipation module.

[0011] In some implementations, in two adjacent heat dissipation modules in the vertical direction of a plurality of heat dissipation modules, the liquid pipe connected to the upper heat dissipation module and the gas pipe connected to the lower heat dissipation module are staggered in the thickness direction of the heat dissipation modules.

[0012] In some embodiments, the gaseous medium main pipe is connected to the gaseous medium inlet of the condenser through two gaseous medium manifolds, which are arranged symmetrically relative to the condenser.

[0013] In some implementations, the liquid medium main pipe is connected to the liquid medium outlet of the condenser through two liquid medium manifolds, which are arranged symmetrically relative to the condenser.

[0014] In some implementations, both the gaseous medium main pipe and the liquid medium main pipe are annular pipes.

[0015] The beneficial effects of this application are as follows: It provides a frequency converter heat dissipation system, including a condenser, a gaseous medium main pipe, a liquid medium main pipe, and multiple heat dissipation modules. Based on the heat dissipation modules inherent in the frequency converter and the condenser necessary for heat dissipation, this application achieves the medium inlet and outlet of the condenser through the gaseous medium main pipe and the liquid medium main pipe. The gaseous medium main pipe is connected to the gaseous medium inlet of the condenser through a gaseous medium manifold, and the liquid medium main pipe is connected to the liquid medium outlet of the condenser through a liquid medium manifold. The gaseous medium main pipe and the liquid medium main pipe are arranged in a phase of all heat dissipation modules. On both sides, all heat dissipation modules are located between the gaseous medium main pipe and the liquid medium main pipe. Each heat dissipation module is connected to the gaseous medium main pipe through at least two gas pipes, and each heat dissipation module is connected to the liquid medium main pipe through at least two liquid pipes. In this way, the pipes for medium passage of each heat dissipation module are independent of each other. When any section of the pipe connected to the heat dissipation module is broken or requires routine inspection, the integrity of the entire pipe system is not damaged, and the normal operation of the heat dissipation system is not affected. This effectively improves the reliability of the inverter heat dissipation system and ensures the stable and continuous operation of the inverter. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention.

[0017] Figure 1 This is a schematic diagram of the structure of a frequency converter heat dissipation system provided in this application.

[0018] Attached diagram labels: 21-Heat dissipation module, 22-Condenser, 23-Gas medium main pipe, 24-Gas medium manifold, 25-Liquid medium main pipe, 26-Liquid medium manifold, 27-Gas pipe, 28-Liquid pipe. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity purposes and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0021] Please refer to Figure 1 This application provides a frequency converter heat dissipation system, including a condenser 22, a gaseous medium main pipe 23, a liquid medium main pipe 25, and multiple heat dissipation modules 21.

[0022] A frequency converter is a key device for motor speed regulation and energy saving; it is also known as a variable frequency drive. The frequency converter itself contains multiple power units, each with a corresponding heat dissipation module 21. The heat dissipation module 21 is highly integrated with the power units of the frequency converter. Generally, a condenser 22 must be installed for heat dissipation, providing the cooling medium required by the heat dissipation unit.

[0023] The condenser 22 is installed outside the inverter cabinet. Based on the required heat dissipation module 21 of the inverter and the necessary condenser 22 for heat dissipation, this application uses a gaseous medium main pipe 23 and a liquid medium main pipe 25 to achieve the medium entry and exit of the condenser 22. The gaseous medium main pipe 23 is connected to the gaseous medium inlet of the condenser 22 via a gaseous medium manifold 24, and the liquid medium main pipe 25 is connected to the liquid medium outlet of the condenser 22 via a liquid medium manifold 26. The gaseous medium enters the condenser 22 through the gaseous medium manifold 24, where it exchanges heat with the external cooling cycle, releasing heat and liquefying. The resulting liquid medium is output from the liquid medium manifold 26.

[0024] Figure 1 A schematic diagram showing only two power units is presented, in conjunction with a reference. Figure 1Multiple heat dissipation modules 21 are installed inside the frequency converter. The gaseous medium main pipe 23 and the liquid medium main pipe 25 are arranged on opposite sides of all heat dissipation modules 21, so that all heat dissipation modules 21 are located between the gaseous medium main pipe 23 and the liquid medium main pipe 25. Each heat dissipation module 21 is connected to the gaseous medium main pipe 23 through at least two gas pipes 27, and each heat dissipation module 21 is connected to the liquid medium main pipe 25 through at least two liquid pipes 28.

[0025] The internal heating element is arranged on the outer surface of the heat dissipation module. The liquid medium inside the heat dissipation module 21 absorbs the heat generated by the element's heat loss and then vaporizes. The vaporized gaseous medium rises naturally from the inside along the gas pipe 27, and then enters the condenser sequentially along the gas medium main pipe 23 and the gas medium manifold 24. The condenser is installed on the top of the outer wall of the cabinet. The gas medium manifold 24 passes through the cabinet. At the condenser, the gaseous medium exchanges heat with the external circulation, releasing heat and liquefying. The liquefied liquid medium flows along the liquid medium manifold 26 to the liquid medium main pipe 25, and continues to flow back to the corresponding heat dissipation module 21 along multiple liquid pipes 28, thus completing one heat exchange cycle. The driving force of the cycle comes from the relative flow of the vapor and liquid phases of the evaporative cooling medium. The upward movement of the vapor phase and the downward movement of the liquid phase constitute the two parts of the cycle. The cycle does not require external force, and after the cycle reaches equilibrium, the internal system does not exert pressure on the outside.

[0026] This ensures that the pipes for medium passage in each heat dissipation module 21 are independent of each other. When any section of pipe connected to the heat dissipation module 21 is broken or requires routine inspection, the integrity of the entire pipe system is not damaged, and the normal operation of the heat dissipation system is not affected. This effectively improves the reliability of the inverter's heat dissipation system and ensures the stable and continuous operation of the inverter.

[0027] In some implementation methods, please refer to Figure 1 The gaseous medium main pipe 23 is closer to the condenser 22 than the liquid medium main pipe 25.

[0028] In some implementation methods, please refer to Figure 1 The condenser 22 is installed on the top of the outer wall of the inverter cabinet, the gaseous medium main pipe 23 is installed on the top of the inner wall of the inverter cabinet, and the liquid medium main pipe 25 is installed on the bottom of the inverter cabinet, specifically at the bottom of the inner wall of the cabinet.

[0029] In some implementation methods, please refer to Figure 1 Multiple heat dissipation modules 21 are arranged in a horizontal direction and a vertical direction.

[0030] The above specifies that each heat dissipation module 21 is connected to the gaseous medium main pipe 23 through at least two air pipes 27. When a single heat dissipation module 21 is connected to the gaseous medium main pipe 23 through only two air pipes 27, please refer to...Figure 1 The two air pipes 27 connected to the heat dissipation module 21 are arranged symmetrically with respect to the vertical center line of the heat dissipation module 21.

[0031] The above specifies that each heat dissipation module 21 is connected to the liquid medium main pipe 25 through at least two liquid pipes 28. When a single heat dissipation module 21 is connected to the liquid medium main pipe 25 through only two liquid pipes 28, please refer to... Figure 1 The two liquid pipes 28 connected to the heat dissipation module 21 are arranged symmetrically with respect to the vertical center line of the heat dissipation module 21.

[0032] In some embodiments, in the vertical direction of multiple heat dissipation modules 21, the liquid pipe 28 connected to the upper heat dissipation module 21 and the air pipe 27 connected to the lower heat dissipation module 21 are staggered in the thickness direction of the heat dissipation module 21. Please refer to [reference needed]. Figure 1 The heat dissipation module 21 has a square structure, and the thickness direction of the heat dissipation module 21 is the thickness direction of the square structure. For example... Figure 1 As shown, Figure 1 Three heat dissipation modules 21 are arranged along the vertical column. According to the above arrangement, the air pipes 27 and liquid pipes 28 connected to these three heat dissipation modules 21 are slightly staggered, thus forming a... Figure 1 The arrangement of the air tube 27 and liquid tube 28 shown results in most sections of the air tube 27 and liquid tube 28 being vertically distributed.

[0033] In some implementation methods, please refer to Figure 1 The gaseous medium main pipe 23 is connected to the gaseous medium inlet of the condenser 22 through two gaseous medium manifolds 24. The two gaseous medium manifolds 24 are arranged symmetrically with respect to the condenser 22, which not only improves the structural symmetry and structural stability of the present application, but also ensures that the overall operation is not affected when one of the gaseous medium manifolds 24 fails.

[0034] In some implementation methods, please refer to Figure 1 The liquid medium main pipe 25 is connected to the liquid medium outlet of the condenser 22 through two liquid medium manifolds 26. The two liquid medium manifolds 26 are arranged symmetrically with respect to the condenser 22, which not only improves the structural symmetry and structural stability of the present application, but also ensures that the overall operation is not affected when one of the liquid medium manifolds 26 fails.

[0035] In some implementation methods, please refer to Figure 1 Both the gaseous medium main pipe 23 and the liquid medium main pipe 25 are ring-shaped pipes. The gaseous medium main pipe 23 can be laid on the top of the inner wall of the inverter cabinet, and the liquid medium main pipe 25 can be laid on the bottom of the inner wall of the inverter cabinet.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0038] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A frequency converter heat dissipation system, characterized in that, include: The condenser is installed outside the cabinet of the frequency converter; Gaseous medium manifold; Liquid medium manifold; The main gas medium pipe is connected to the gas medium inlet of the condenser through the gas medium manifold; The liquid medium main pipe is connected to the liquid medium outlet of the condenser through the liquid medium manifold; Multiple heat dissipation modules are installed inside the frequency converter and located between the gaseous medium main pipe and the liquid medium main pipe. Each heat dissipation module is connected to the gaseous medium main pipe through at least two gas pipes and each heat dissipation module is connected to the liquid medium main pipe through at least two liquid pipes.

2. The inverter heat dissipation system as described in claim 1, characterized in that, The gaseous medium main pipe is closer to the condenser than the liquid medium main pipe.

3. The inverter heat dissipation system as described in claim 2, characterized in that, The condenser is installed at the top of the inverter cabinet, the gaseous medium main pipe is installed at the top of the inner wall of the inverter cabinet, and the liquid medium main pipe is installed at the bottom of the inverter cabinet.

4. The inverter heat dissipation system as described in claim 2 or 3, characterized in that, The heat dissipation modules are arranged in an array.

5. The inverter heat dissipation system as described in claim 4, characterized in that, With the heat dissipation module connected to the gaseous medium main pipe via two air pipes, the two air pipes connected to the heat dissipation module are arranged symmetrically with respect to the vertical centerline of the heat dissipation module.

6. The inverter heat dissipation system as described in claim 4, characterized in that, With the heat dissipation module connected to the liquid medium main pipe via two liquid pipes, the two liquid pipes connected to the heat dissipation module are arranged symmetrically with respect to the vertical centerline of the heat dissipation module.

7. The inverter heat dissipation system as described in claim 4, characterized in that, In a vertical column of multiple heat dissipation modules, the liquid pipe connected to the upper heat dissipation module and the gas pipe connected to the lower heat dissipation module are staggered in the thickness direction of the heat dissipation modules.

8. The inverter heat dissipation system as described in claim 1, characterized in that, The main gas medium pipe is connected to the gas medium inlet of the condenser through two gas medium manifolds, and the two gas medium manifolds are arranged symmetrically relative to the condenser.

9. The inverter heat dissipation system as described in claim 1, characterized in that, The liquid medium main pipe is connected to the liquid medium outlet of the condenser through two liquid medium manifolds, and the two liquid medium manifolds are arranged symmetrically relative to the condenser.

10. The inverter heat dissipation system as described in claim 1, characterized in that, Both the gaseous medium main pipe and the liquid medium main pipe are ring-shaped pipe fittings.

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