CN219741014U - Heat radiation structure and have its converter - Google Patents

Abstract

A heat dissipation structure for dissipating heat from a power module and a capacitor of a frequency converter, comprising: the condenser with the condensation pipeline therein, the evaporator with the heat dissipation pipeline therein, the air pipe and the liquid pipe, wherein the condenser is positioned above the evaporator, the condenser is horizontally arranged, the evaporator is vertically arranged, the heat dissipation pipeline, the air pipe, the condensation pipeline and the liquid pipe are sequentially connected in a tail-end mode to form a closed pipeline, a phase change material capable of circulating gas and liquid is arranged in the closed pipeline, the power module is fixed on the outer side of the evaporator, and the capacitor is arranged between the condenser and the evaporator. The heat radiation structure of the utility model radiates heat circularly through the condenser and the evaporator, has good heat radiation effect, high reliability and low cost. The utility model also provides a frequency converter with the heat radiation structure.

Description

Heat radiation structure and have its converter

Technical Field

The utility model relates to the technical field of heat dissipation, in particular to a frequency converter with a heat dissipation structure.

Background

Currently, frequency converters generally dissipate heat in both water-cooled and air-cooled modes. The air cooling heat dissipation cost is low, the reliability is high, but the heat dissipation efficiency is low; the water cooling heat dissipation efficiency is high, the power density is high, but the cost is high and the reliability is poor. Therefore, air cooling heat dissipation is used in many occasions with high reliability requirements. The air-cooled radiator generally uses a combination mode of a base plate and a tooth plate to radiate heat to the tooth plate through an air duct so as to achieve the aim of cooling. The materials of the base plate and the tooth plate are commonly aluminum and copper, and compared with copper materials, the aluminum radiator has low price and light weight; copper radiator is high in price and heavy in weight compared with aluminum material, but good in heat dissipation effect. Therefore, only a copper radiator can be selected in the occasion of high power density so as to realize better heat dissipation effect, and the cost pressure is high.

Therefore, there is an urgent need to provide a heat dissipation structure having a good heat dissipation effect, low cost, and high reliability.

Disclosure of Invention

The utility model aims to avoid the defects in the prior art and provide a heat dissipation structure with good heat dissipation effect, low cost and high reliability, which aims to solve one of the technical problems.

A heat dissipation structure for dissipating heat from a power module and a capacitor of a frequency converter, comprising: the condenser is arranged above the evaporator, the condenser is horizontally arranged, the evaporator is vertically arranged, the heat dissipation pipeline, the air pipe, the condensation pipeline and the liquid pipe are sequentially connected in a tail mode to form a closed pipeline, a phase change material capable of circulating gas and liquid is arranged in the closed pipeline, the power module is fixed to the outer side of the evaporator, and the capacitor is arranged between the condenser and the evaporator.

Preferably, the air pipe and the liquid pipe are respectively arranged at two ends of the condenser, and the capacitor is arranged between the air pipe and the liquid pipe.

Preferably, the upper and lower surfaces of the condenser are respectively provided with heat radiating fins.

Preferably, the number of the condensers is two, the two condensers are overlapped up and down to form a condensation unit, the number of the air pipes, the liquid pipes and the heat dissipation pipelines of the evaporator is two, the two heat dissipation pipelines, the two air pipes, the two condensation pipelines and the two liquid pipes form two closed pipelines respectively, one air pipe of the condenser and the liquid pipe of the other condenser are located at the same end, and the liquid pipe of one condenser and the air pipe of the other condenser are located at the same end.

Preferably, the number of the condensation units is two, two condensation units are arranged side by side, the number of the air pipes, the liquid pipes and the heat dissipation pipelines of the evaporator is four, four heat dissipation pipelines, four air pipes, four condensation pipelines and four liquid pipes form four closed pipelines respectively, and the arrangement modes of the air pipes at two ends of the condensation units and the liquid pipes are the same.

Preferably, the power module is fixed on both sides of the evaporator.

Preferably, the capacitors are arranged in front and rear rows, wherein the capacitors in one row are connected with the power module at one side of the evaporator through a bus; the capacitors of the other row are connected with the power module at the other side of the evaporator through buses.

Preferably, the phase change material is a refrigerant.

Preferably, the heat radiating fin is an aluminum heat radiating fin.

The utility model also provides a frequency converter, comprising: power module, capacitor and heat dissipation structure as described above.

Compared with the prior art, the utility model has the following advantages: the heat dissipation structure adopts an evaporator and a condenser to dissipate heat, the condenser is positioned above the evaporator, a heat dissipation pipeline, an air pipe, a condensation pipeline and a liquid pipe are sequentially connected in a tail-end mode to form a closed pipeline, a phase change material capable of circulating gas and liquid is arranged in the closed pipeline, a power module is fixed on the outer side of the evaporator, and a capacitor is arranged between the condenser and the evaporator. The power module can produce a large amount of heat at the during operation, and power module is fixed in the outside of evaporimeter, and then in conducting power module's heat to the evaporimeter, the heat dissipation pipeline in the evaporimeter has absorbed the heat, and phase change material in it has absorbed the heat and has evaporated into the gaseous state, because of the condenser is located the top of evaporimeter, gaseous phase change material's through the trachea rise to in the condensation pipeline of condenser. The gas phase-change material is condensed into liquid state again when encountering cold in the condenser, the liquid phase-change material flows back to the evaporator through the liquid pipe, the liquid phase-change material absorbs heat in the evaporator and becomes gaseous state again, so that gas-liquid circulation is formed in a reciprocating manner, and further heat dissipation of the power module is achieved. Meanwhile, as the capacitor is arranged between the condenser and the evaporator, the liquid pipe and the air pipe can take away the heat generated by the capacitor in the circulation process, so that the heat dissipation of the capacitor is realized.

The condenser is horizontally arranged, so that other devices can be conveniently installed, and the installation space is saved. The capacitor is arranged between the condenser and the evaporator, and the heat dissipation structure not only can dissipate heat for the power module, but also can dissipate heat for the capacitor, and has good heat dissipation effect on the frequency converter. The power module is fixed on the outer side of the evaporator, so that heat conduction is facilitated, heat conduction efficiency can be improved, and the heat dissipation effect is good. The vertical setting of evaporimeter makes things convenient for power module's installation, and is favorable to gaseous phase change material to rise to the trachea.

The heat radiation structure of the utility model radiates heat circularly through the condenser and the evaporator, has good heat radiation effect and high reliability, and has low cost compared with the copper radiator adopted in the prior art.

In the same way, the frequency converter of the utility model circularly radiates heat through the condenser and the evaporator, has good heat radiation effect and high reliability, and has low cost compared with the prior art adopting a copper radiator.

Drawings

The utility model is further illustrated by means of the accompanying drawings, the embodiments in which do not constitute any limitation of the utility model.

FIG. 1 is a schematic view of a first embodiment of a heat dissipating structure according to the present utility model;

FIG. 2 is a schematic diagram of a second embodiment of a heat dissipating structure according to the present utility model;

fig. 3 is a schematic structural diagram of a frequency converter according to the present utility model.

Detailed Description

The utility model will be further described with reference to the following examples and figures:

as shown in fig. 1, a heat dissipation structure for dissipating heat from a power module 11 and a capacitor 12 of a frequency converter 10 includes: the condenser 13 with a condensation pipeline (not shown in the figure), the evaporator 14 with a heat dissipation pipeline (not shown in the figure), the air pipe 15 and the liquid pipe 16 are arranged in the condenser, the condenser 13 is positioned above the evaporator 14, the condenser 13 is horizontally arranged, the evaporator 14 is vertically arranged, the heat dissipation pipeline (not shown in the figure), the air pipe 15, the condensation pipeline (not shown in the figure) and the liquid pipe 16 are sequentially connected in a tail-to-tail mode to form a closed pipeline, a phase change material capable of circulating gas and liquid is arranged in the closed pipeline, the power module 11 is fixed on the outer side of the evaporator 14, and the capacitor 12 is arranged between the condenser 13 and the evaporator 14.

In particular, the phase change material may be a refrigerant. Of course, the phase change material can be other phase change materials which can meet the gas-liquid cycle conversion of the utility model in the prior art.

The heat dissipation structure adopts the structures of the evaporator 14 and the condenser 13 to dissipate heat, the condenser 13 is positioned above the evaporator 14, a heat dissipation pipeline (not labeled in the figure), an air pipe 15, a condensation pipeline (not labeled in the figure) and a liquid pipe 16 are sequentially connected in a tail-to-tail mode to form a closed pipeline, a phase change material capable of circulating gas and liquid is arranged in the closed pipeline, the power module 11 is fixed on the outer side of the evaporator 14, and the capacitor 12 is arranged between the condenser 13 and the evaporator 14. The power module 11 generates a large amount of heat during operation, the power module 11 is fixed on the outer side of the evaporator 14, and then the heat of the power module 11 is conducted into the evaporator 14, a heat dissipation pipeline (not shown) in the evaporator 14 absorbs the heat, the phase change material in the heat dissipation pipeline absorbs the heat and evaporates into a gaseous state, and the gaseous phase change material rises into a condensation pipeline (not shown) of the condenser 13 through an air pipe 15 because the condenser 13 is positioned above the evaporator 14. The gas phase change material is condensed into liquid state again when encountering cold in the condenser 13, the liquid phase change material flows back to the evaporator 14 through the liquid pipe 16, the liquid phase change material absorbs heat in the evaporator 14 and becomes gaseous again, so that the gas-liquid circulation is formed in a reciprocating manner, and further heat dissipation of the power module 11 is realized, and the specific gas-liquid flow is in the arrow direction in the drawing. Meanwhile, as the capacitor 12 is arranged between the condenser 13 and the evaporator 14, the liquid pipe 16 and the air pipe 15 can take away the heat generated by the capacitor 12 in the circulation process, so that the heat dissipation of the capacitor 12 is realized.

The condenser 13 is horizontally arranged, so that other devices can be conveniently installed, and the installation space is saved. The capacitor 12 is arranged between the condenser 13 and the evaporator 14, and the heat dissipation structure not only can dissipate heat for the power module 11, but also can dissipate heat for the capacitor 12, and has good heat dissipation effect on the frequency converter 10. The power module 11 is fixed on the outer side of the evaporator 14, which is favorable for heat conduction, can improve heat conduction efficiency and has good heat dissipation effect. The evaporator 14 is vertically arranged, so that the installation of the power module 11 is facilitated, and the gaseous phase change material is facilitated to rise to the air pipe 15.

The heat radiation structure of the utility model radiates heat circularly through the condenser 13 and the evaporator 14, has good heat radiation effect and high reliability, and has lower cost compared with the copper radiator adopted in the prior art.

Preferably, as shown in fig. 1 to 3, the air pipe 15 and the liquid pipe 16 are respectively disposed at two ends of the condenser 13, and the capacitor 12 is disposed between the air pipe 15 and the liquid pipe 16. The air pipe 15 and the liquid pipe 16 are respectively arranged at two ends of the condenser 13, the capacitor 12 is arranged between the air pipe 15 and the liquid pipe 16, namely, two ends of the capacitor 12 are respectively provided with the air pipe 15 and the liquid pipe 16 for heat dissipation, so that heat dissipation of the capacitor 12 is facilitated, heat dissipation is more balanced, and heat dissipation effect is better.

Preferably, as shown in fig. 1 to 3, the upper and lower surfaces of the condenser 13 are provided with heat radiating fins 17, respectively. The heat dissipation fins 17 are respectively arranged on the upper surface and the lower surface of the condenser 13, so that the heat dissipation area of the condenser 13 can be increased, and the heat dissipation efficiency of the condenser 13 can be further improved. Specifically, the heat dissipation fins 17 may be aluminum heat dissipation fins 17, and the aluminum heat dissipation fins 17 have good heat dissipation effect, light weight and low cost. Of course, other materials with good heat dissipation effect in the prior art may be used for the heat dissipation fins 17.

Preferably, as shown in fig. 1, the number of the condensers 13 is two, the two condensers 13 are overlapped up and down to form a condensation unit 18, the number of the air pipe 15, the liquid pipe 16 and the heat dissipation pipeline (not shown in the drawing) of the evaporator 14 is two, the two heat dissipation pipelines (not shown in the drawing), the two air pipes 15, the two condensation pipelines (not shown in the drawing) and the two liquid pipes 16 respectively form two closed pipelines, the air pipe 15 of one condenser 13 and the liquid pipe 16 of the other condenser 13 are positioned at the same end, and the liquid pipe 16 of one condenser 13 and the air pipe 15 of the other condenser 13 are positioned at the same end. In particular, the gas-liquid flow is in the direction of the arrows, see fig. 1.

The two condensers 13, the two heat dissipation pipelines (not labeled in the figure), the two air pipes 15, the two condensation pipelines (not labeled in the figure) and the two liquid pipes 16 respectively form two closed pipelines, and the heat dissipation efficiency can be improved by dissipating the heat of the frequency converter 10 through the phase change materials in the two closed pipelines. The air pipe 15 of one of the condensers 13 and the liquid pipe 16 of the other condenser 13 are located at the same end, and the liquid pipe 16 of one of the condensers 13 and the air pipe 15 of the other condenser 13 are located at the same end. Namely, the two ends of the capacitor 12 are respectively provided with the air pipe 15 and the liquid pipe 16, so that the same heat dissipation efficiency of the two ends of the capacitor 12 can be ensured, the heat dissipation balance is facilitated, and the capacitor 12 at one end is prevented from being damaged due to overhigh temperature. The two condensers 13 are overlapped up and down to form a condensing unit 18, so that the space can be saved, and the installation of other components is facilitated.

Preferably, as shown in fig. 2 and 3, the number of the condensation units 18 is two, the two condensation units 18 are arranged side by side, the number of the air pipes 15, the liquid pipes 16 and the heat dissipation pipelines (not shown) of the evaporator 14 is four, the four heat dissipation pipelines (not shown), the four air pipes 15, the four condensation pipelines (not shown) and the four liquid pipes 16 respectively form four closed pipelines, and the arrangement modes of the air pipes 15 and the liquid pipes 16 at two ends of the two condensation units 18 are the same. The specific gas-liquid flow is in the direction of the arrows, see fig. 2 and 3.

Four heat dissipation pipelines (not labeled in the figure), four air pipes 15, four condensation pipelines (not labeled in the figure) and four liquid pipes 16 respectively form four closed pipelines, and the heat dissipation efficiency can be improved by dissipating heat of the frequency converter 10 through phase change materials in the four closed pipelines. The air pipes 15 and the liquid pipes 16 at the two ends of the two condensing units 18 are arranged in the same mode, namely, the two air pipes 15 and the two liquid pipes 16 are respectively arranged at the two ends of the capacitor 12, so that the same heat dissipation efficiency at the two ends of the capacitor 12 can be ensured, the heat dissipation balance is facilitated, and the capacitor 12 at one end is prevented from being damaged due to overhigh temperature. The two condensing units 18 are arranged side by side, and the two condensers 13 of each group of condensing units 18 are arranged in an up-down overlapping mode, so that space can be saved, and the installation of other components is facilitated.

Preferably, as shown in fig. 2 and 3, the power module 11 is fixed to both sides of the evaporator 14. The power modules 11 are fixed on two sides of the evaporator 14, and four closed pipelines are respectively formed by four heat dissipation pipelines (not labeled in the figure), four air pipes 15, four condensation pipelines (not labeled in the figure) and four liquid pipes 16, so that heat dissipation of the evaporator 14 by phase change materials in the four closed pipelines can be ensured, more power modules 11 can be dissipated by one evaporator 14, the space of the evaporator 14 materials and heat dissipation structures is saved, and the structure is more compact.

Preferably, as shown in fig. 2 and 3, the capacitors 12 are arranged in two rows, wherein the capacitor 12 of one row is connected with the power module 11 at one side of the evaporator 14 through a bus 19; the capacitors 12 of the other row are connected to the power module 11 on the other side of the evaporator 14 by bus bars 19. More capacitors 12 can be radiated through the phase change materials in the four closed pipelines, so that the space of a radiating structure is saved, and the structure is more compact.

The present utility model also provides a frequency converter 10 comprising: the power module 11, the capacitor 12 and the heat dissipation structure as described above.

The heat dissipation structure provided by the frequency converter 10 of the present utility model and the above embodiments belong to the same concept, and the detailed implementation process is shown in the entire specification, and will not be repeated here.

In the same way, the frequency converter 10 of the utility model circularly radiates heat through the condenser 13 and the evaporator 14, has good heat radiation effect and high reliability, and has lower cost compared with the prior art adopting a copper radiator.

Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.

Claims (10)

1. A heat radiation structure for radiating heat for a power module and a capacitor of a frequency converter, comprising: the condenser is arranged above the evaporator, the condenser is horizontally arranged, the evaporator is vertically arranged, the heat dissipation pipeline, the air pipe, the condensation pipeline and the liquid pipe are sequentially connected in a tail mode to form a closed pipeline, a phase change material capable of circulating gas and liquid is arranged in the closed pipeline, the power module is fixed to the outer side of the evaporator, and the capacitor is arranged between the condenser and the evaporator.

2. A heat dissipating structure according to claim 1, wherein: the air pipe and the liquid pipe are respectively arranged at two ends of the condenser, and the capacitor is arranged between the air pipe and the liquid pipe.

3. A heat dissipating structure according to claim 2, wherein: and the upper surface and the lower surface of the condenser are respectively provided with radiating fins.

4. A heat dissipating structure according to claim 3, wherein: the number of the condensers is two, the two condensers are arranged in an up-down overlapping mode to form a condensation unit, the number of the air pipes, the number of the liquid pipes and the number of the heat dissipation pipelines of the evaporator are two, the two heat dissipation pipelines, the two air pipes, the two condensation pipelines and the two liquid pipes form two closed pipelines respectively, one air pipe of the condenser and the other liquid pipe of the condenser are located at the same end, and one liquid pipe of the condenser and the other air pipe of the condenser are located at the same end.

5. A heat dissipating structure according to claim 4, wherein: the number of the condensing units is two, the two condensing units are arranged side by side, the number of the air pipes, the liquid pipes and the heat dissipation pipelines of the evaporator is four, four heat dissipation pipelines, four air pipes, four condensing pipelines and four liquid pipes form four closed pipelines respectively, and the air pipes at two ends of the condensing units and the liquid pipes are identical in arrangement mode.

6. A heat dissipating structure according to claim 5, wherein: the power modules are fixed on two sides of the evaporator.

7. A heat dissipating structure according to claim 6, wherein: the capacitors are arranged in front and back rows, wherein the capacitors of one row are connected with the power module at one side of the evaporator through a bus; the capacitors of the other row are connected with the power module at the other side of the evaporator through buses.

8. A heat dissipating structure according to claim 7, wherein: the phase change material is a refrigerant.

9. A heat dissipating structure according to claim 8, wherein: the radiating fins are aluminum radiating fins.

10. A frequency converter, comprising: power module, capacitor and heat dissipating structure according to any of claims 1 to 9.