CN221228148U - Heat radiation structure and inverter with same - Google Patents
Heat radiation structure and inverter with same Download PDFInfo
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- CN221228148U CN221228148U CN202323198405.4U CN202323198405U CN221228148U CN 221228148 U CN221228148 U CN 221228148U CN 202323198405 U CN202323198405 U CN 202323198405U CN 221228148 U CN221228148 U CN 221228148U
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- heat dissipation
- air inlet
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- housing
- dissipation housing
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- 230000005855 radiation Effects 0.000 title description 2
- 230000017525 heat dissipation Effects 0.000 claims abstract description 122
- 230000009471 action Effects 0.000 claims abstract description 6
- 238000009423 ventilation Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 abstract description 28
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The application discloses a heat dissipation structure and an inverter with the same; the heat dissipation structure comprises a heat dissipation housing; the heat dissipation housing is provided with a heat dissipation air channel from bottom to top, and an air inlet structure for communicating the heat dissipation air channel with the outside is arranged at a set position of the heat dissipation housing; when the heat dissipation air duct is ventilated, the air inlet structure reduces the air pressure nearby in the heat dissipation housing, so that the external cold air flows into the heat dissipation housing along the air inlet structure under the action of the atmospheric pressure; the inverter comprises the heat dissipation structure. The application has the beneficial effects that: compared with the traditional cooling mode of a single cooling air duct, the air inlet structure is arranged on the cooling housing, and the air inlet structure can work through the pressure difference formed by the air flow of the cooling air duct, so that external cold air can be pumped into the cooling housing, and the alternating current inductor positioned at the upper part of the inverter can be well cooled.
Description
Technical Field
The application relates to the technical field of photovoltaic inverters, in particular to a heat dissipation structure and an inverter with the same.
Background
An inverter is a converter that converts direct-current electrical energy into alternating current; based on its operating characteristics, a large amount of heat is generated inside; therefore, the existing inverter is provided with a heat dissipation structure on the housing.
The heat dissipation structure of the existing inverter generally comprises an air inlet arranged at the lower end of the inverter and an air outlet arranged at the upper end of the inverter. When cold air enters the forefront inductor from the air inlet, the temperature of the cooled air starts to rise, the temperature of the cooled air rises sharply after passing through the fin radiator in the middle, and finally the cooled air is discharged out of the equipment along the air outlet after passing through the alternating current inductor. Because the cooling air is continuously heated by the heat source, the air temperature is very high when the alternating current inductor is reached, the heat dissipation effect on the alternating current inductor is poor, and the alternating current inductor is easy to work on a critical point. Based on this, improvement of the heat dissipation structure of the existing inverter is urgently needed.
Disclosure of utility model
One of the objectives of the present application is to provide a heat dissipation structure that can solve at least one of the above drawbacks of the related art.
Another object of the present application is to provide an inverter capable of solving at least one of the above-mentioned drawbacks of the related art.
In order to achieve at least one of the above objects, the present application adopts the following technical scheme: the heat dissipation structure comprises a heat dissipation housing, wherein a heat dissipation air duct is arranged in the heat dissipation housing from bottom to top; the heat dissipation housing is provided with an air inlet structure for communicating the heat dissipation air duct with the outside at a set position; when the radiating air duct is ventilated, the air inlet structure reduces the air pressure nearby in the radiating housing, so that the external cold air flows into the radiating housing along the air inlet structure under the action of atmospheric pressure.
Preferably, an air inlet is formed in the heat dissipation housing, a guide plate extending inwards is arranged on the lower side of the air inlet of the heat dissipation housing, and the guide plate and the air inlet are mutually matched to form the air inlet structure; when the air flow of the heat dissipation air duct passes through the air inlet structure, the flow speed of the air flow is increased through the obstruction of the guide plate, so that the air pressure of the heat dissipation housing near the air inlet structure is reduced.
Preferably, the guide plate is a straight plate or an arc plate, and the guide plate is inclined upwards in the heat dissipation housing.
Preferably, the included angle between the guide plate and the horizontal direction is alpha, and the value of the included angle alpha is 30-60 degrees.
Preferably, the heat dissipation housing comprises an inwardly recessed ventilation plate, so that the sectional area of the heat dissipation air duct at the corresponding position of the ventilation plate is reduced, and the airflow velocity of the heat dissipation air duct is increased; the air inlet structure is arranged on the ventilating plate.
Preferably, the ventilation board is arranged in the middle or upper part of the heat dissipation housing, so that external cold air can enter the heat dissipation air duct to dissipate heat of the alternating current inductor.
Preferably, at least one group of air inlet structures is arranged along the height direction of the heat dissipation housing, and the number of each group of air inlet structures is at least one and is arranged along the width direction of the heat dissipation housing.
Preferably, the number of the air inlet structures in each group is multiple, and the air inlet structures are arranged at equal intervals along the width direction of the heat dissipation housing; and the extension length of the air inlet structure is 5% -30% of the width of the heat dissipation housing.
Preferably, the number of the air inlet structures in each group is one, and the extension length of the air inlet structures is 50% -90% of the width of the heat dissipation housing.
An inverter comprises the heat dissipation structure.
Compared with the prior art, the application has the beneficial effects that:
Compared with the traditional cooling mode of a single cooling air duct, the air inlet structure is arranged on the cooling housing, and the air inlet structure can work through the pressure difference formed by the air flow of the cooling air duct, so that external cold air can be pumped into the cooling housing, and the alternating current inductor positioned at the upper part of the inverter can be well cooled.
Drawings
Fig. 1 is a schematic diagram of a back structure of an inverter according to the present utility model.
Fig. 2 is a schematic diagram of an inner side structure of a heat dissipation housing according to the present utility model.
Fig. 3 is a schematic diagram of an inner side structure of the heat dissipation housing according to the present utility model.
Fig. 4 is a schematic cross-sectional view of a heat dissipating housing in a side view.
Fig. 5 is an enlarged schematic view of the present utility model at a portion a in fig. 4.
Fig. 6 is a schematic structural view of another embodiment of an air intake structure in the present utility model.
In the figure: inverter body 1, heat dissipation housing 2, heat dissipation wind channel 200, air inlet 201, air outlet 202, air inlet structure 203, air inlet hole 204, air outlet hole 205, ventilation board 21, air intake 210, guide plate 22, cooling device 3.
Detailed Description
The present application will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.
In the description of the present application, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present application that the device or element referred to must have a specific azimuth configuration and operation.
It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
The terms "comprises" and "comprising," along with any variations thereof, in the description and claims, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
One aspect of the present application provides a heat dissipation structure, as shown in fig. 1 to 6, in which a preferred embodiment includes a heat dissipation case 2, and a heat dissipation air duct 200 is provided inside the heat dissipation case 2 from bottom to top. Therefore, when radiating, the cooling air duct 200 can pump the external cold air at the lower part of the cooling housing 2 into the cooling housing 2, then cool the electronic components in the cooling housing 2 and then discharge the cooled electronic components at the top of the cooling housing 2.
Meanwhile, the heat dissipation housing 2 is provided with an air intake structure 203 at a set position, which can communicate the heat dissipation air duct 200 with the outside. Therefore, when the heat dissipation air duct 200 performs ventilation and heat dissipation, the air pressure in the heat dissipation housing 2 near the air inlet structure 203 is reduced, and then external cold air can flow into the heat dissipation housing 2 along the air inlet structure 203 under the action of the air pressure and is mixed with the heat dissipation air duct 200, so that the temperature of the heat dissipation air duct 200 is properly reduced, and further, good heat dissipation can be performed on the alternating current inductor, so that the alternating current inductor can work normally below the critical temperature.
It should be noted that the interior of the conventional heat dissipating casing 2 may be formed in a relatively airtight structure, that is, the flow rate of the air flow of the heat dissipating air duct 200 is uniform while flowing along the interior of the heat dissipating casing 2, thereby keeping the air pressure inside the heat dissipating casing 2 constant. In this embodiment, the air inlet structure 203 is provided at a proper position of the heat dissipation housing 2, and the air inlet structure 203 can reduce the air pressure in the heat dissipation housing 2 near the air inlet structure 203 while communicating the heat dissipation air duct 200 with the outside, so that the outside cold air can flow into the heat dissipation housing 2 along the air inlet structure 203 under the action of the atmospheric pressure, thereby reducing the temperature of the air flow of the heat dissipation air duct 200 to cool the ac inductor better.
It should also be appreciated that the specific structure of the heat dissipation air duct 200 is well known to those skilled in the art, and may be described simply for ease of understanding. As shown in fig. 1 to 3, the heat dissipation air duct 200 includes an air inlet 201 disposed at the bottom of the heat dissipation housing 2, an air outlet 202 disposed at the top of the heat dissipation housing 2, and a plurality of cooling devices 3 mounted at the bottom of the heat dissipation housing 2 and aligned in the width direction. The cooling device 3 can pump external cold air into the heat dissipation housing 2 along the air inlet 201 and flow along the direction from the interior of the heat dissipation housing 2 to the air outlet 202, the air flow can absorb heat to the electronic components on the flow path in the flowing process, and the hot air flow formed after absorbing heat can be discharged along the air outlet 202.
It will be appreciated that the specific construction and operation of the cooling device 3 is well known to those skilled in the art, and that the cooling device 3 is typically a cooling fan. Meanwhile, the bottom of the heat dissipation housing 2 forms a required air inlet 201 through a plurality of uniformly distributed air inlet holes 204; the top of the heat dissipation housing 2 is provided with a plurality of uniformly distributed air outlet holes 205 to form a required air outlet 202.
In this embodiment, there are various specific structures for the air intake structure 203 capable of changing the pressure inside the heat dissipation housing 2, one of which is shown in fig. 5. The heat dissipation housing 2 is provided with an air inlet 210, and the heat dissipation housing 2 is provided with a guide plate 22 extending inwards at the lower side of the air inlet 210; the baffle 22 and the intake vent 210 may cooperate to form the intake structure 203. Therefore, when the airflow in the heat dissipation air duct 200 passes through the air inlet structure 203, the flow speed of the airflow can be increased by the obstruction of the flow guide plate 22, and the air pressure of the heat dissipation housing 2 near the air inlet structure 203 is reduced.
It can be understood that, since the baffle 22 extends toward the inside of the heat dissipation housing 2, the cross-sectional area of the heat dissipation air channel 200 corresponding to the baffle 22 is reduced due to the shielding of the baffle 22, and thus the flow rate of the air flow will increase under the condition that the flow rate of the air flow is unchanged. The greater the flow rate of the fluid, the less the pressure, according to bernoulli's principle; that is, the pressure of the heat dissipation air channel 200 near the deflector 22 is reduced, and then the cold air outside the heat dissipation housing 2 can flow into the heat dissipation housing 2 along the air inlet structure 203 under the action of atmospheric pressure to be mixed with the air flow of the original heat dissipation air channel 200 for cooling, so that the air flow after mixing can be better cooled when passing through the ac inductor, and the ac inductor can be ensured to work below the critical temperature.
Specifically, as shown in fig. 5, the specific structure of the baffle 22 may be a straight plate structure or an arc plate structure. And the deflector 22 may be inclined upward inside the radiator casing 2 when extended.
It should be appreciated that the baffle 22 may extend in any direction, i.e., may be inclined downward, may be perpendicular to the heat dissipating housing 2, or may be inclined upward. When the baffle 22 is inclined downward or perpendicular to the heat dissipation housing 2, the airflow of the heat dissipation air channel 200 will be completely blocked by the baffle 22 when passing through the baffle 22, so that the flow of the heat dissipation air channel 200 is not smooth. When the deflector 22 is inclined upward, the air flow of the heat dissipation air channel 200 can flow along the side wall of the deflector 22 when passing through the deflector 22, so that the air flow of the heat dissipation air channel 200 can be ensured to be smooth. Therefore, the baffle 22 is preferably inclined upward in this embodiment.
Specifically, the included angle between the baffle 22 and the horizontal direction may be set to be α, and the value of the included angle α may be 30 ° to 60 °. If the deflector 22 is an arc-shaped plate, the included angle between the horizontal direction and the connecting line between the upper end and the lower end of the deflector 22 is α.
In this embodiment, as shown in fig. 4, the heat dissipation housing 2 includes the ventilation board 21 recessed inwards, so that the cross-sectional area of the heat dissipation air duct 200 at the corresponding position of the ventilation board 21 is reduced, and the airflow velocity of the heat dissipation air duct 200 can be increased. Then, the air inlet structure 203 is disposed on the ventilation board 21, so as to further increase the flow velocity of the air flow in the heat dissipation housing 2 near the air inlet structure 203, so as to further increase the flow rate of the external cold air entering the heat dissipation housing 2 along the air inlet structure 203.
It should be noted that the upper and lower ends of the ventilation board 21 have transition sections, and in order to avoid that the transition sections have a great influence on the fluidity of the air flow of the cooling air duct 200, the transition sections may be disposed obliquely or in an arc shape as shown in fig. 4.
It will be appreciated that the flow rate of the cooling air duct 200 depends on the power of the cooling device 3; in the case where the power of the cooling device 3 is not changed, the flow rate of the cooling air duct 200 can be regarded as constant. Therefore, when the ventilation board 21 has a concave structure, the cross-sectional area S of the heat dissipation duct 200 corresponding to the ventilation board 21 becomes small. As can be seen from the calculation formula q=v·s of the flow rate Q, when the flow rate Q is unchanged, a decrease in the cross-sectional area S will result in an increase in the flow velocity v of the air flow; and the pressure intensity corresponding to the position of the ventilation board 21 is smaller than the pressure intensity of the upper side and the lower side of the ventilation board 21 according to the Bernoulli principle. Then, the air inlet structure 203 is arranged on the ventilation board 21, and the pressure intensity can be further reduced through the air inlet structure 203, so that the outside air can be ensured to have enough cold air entering into the heat dissipation housing 2 along the air inlet 210 of the air inlet structure 203.
Specifically, as shown in fig. 4, since the air intake structure 203 is provided for the main purpose of enhancing heat dissipation to the ac inductor, the air intake structure 203 may be provided in the middle or upper portion of the heat dissipation housing 2. Accordingly, the ventilation board 21 may be provided at the middle or upper portion of the heat dissipation case 2; or the ventilation board 21 may have a length sufficient to cover the middle and upper portions of the radiator casing 2.
In this embodiment, there are various specific arrangements of the air intake structure 203, including but not limited to the following two arrangements.
Mode one: as shown in fig. 1 to 3, the air intake structures 203 are arranged at intervals in the height direction of the heat dissipation housing 2, and the number of the air intake structures 203 in each group is plural, and the plurality of air intake structures 203 in each group are arranged in the width direction of the heat dissipation housing 2. The length of the air inlet 210 of the air inlet structure 203 and the air deflector 22 along the width direction of the heat dissipation housing 2 is 5% -30% of the width of the heat dissipation housing 2.
Mode two: as shown in fig. 6, at least one air intake structure 203 is disposed at intervals in the height direction of the heat dissipation housing 2, the air intake structure 203 extends along the width direction of the heat dissipation housing 2, and the extending length of the air intake 210 of the air intake structure 203 and the air deflector 22 along the width direction of the heat dissipation housing 2 is 50% -90% of the width of the heat dissipation housing 2.
It should be appreciated that both of the above approaches may meet the needs of the present application. In the first mode, the number of the groups of the air inlet structures 203 and the specific number of the air inlet structures 203 included in each group can be selected according to actual needs. For example, as shown in fig. 1 to 3, the air intake structures 203 have two groups, each group including six air intake structures 203. In the second mode, the specific number of the air intake structures 203 can be selected according to actual needs, for example, as shown in fig. 6, the number of the air intake structures 203 is one.
Another aspect of the present application provides an inverter, as shown in fig. 1, wherein a preferred embodiment includes the above-mentioned heat dissipation structure and an inverter body 1; the heat dissipation case 2 is provided on the back of the inverter body 1.
The foregoing has outlined the basic principles, features, and advantages of the present application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present application, and various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of the application is defined by the appended claims and equivalents thereof.
Claims (10)
1. The heat dissipation structure comprises a heat dissipation housing, wherein a heat dissipation air duct is arranged in the heat dissipation housing from bottom to top; the method is characterized in that: the heat dissipation housing is provided with an air inlet structure for communicating the heat dissipation air duct with the outside at a set position;
When the radiating air duct is ventilated, the air inlet structure reduces the air pressure nearby in the radiating housing, so that the external cold air flows into the radiating housing along the air inlet structure under the action of atmospheric pressure.
2. The heat dissipating structure of claim 1, wherein: the heat dissipation housing is provided with an air inlet, the lower side of the air inlet of the heat dissipation housing is provided with a guide plate extending inwards, and the guide plate is matched with the air inlet to form the air inlet structure.
3. The heat dissipating structure of claim 2, wherein: the guide plate is a straight plate or an arc plate, and the guide plate is inclined upwards in the heat dissipation housing.
4. A heat dissipating structure as recited in claim 3, wherein: and the included angle between the guide plate and the horizontal direction is alpha, and the value of the included angle alpha is 30-60 degrees.
5. The heat dissipating structure of claim 2, wherein: the heat dissipation housing comprises an inwards concave ventilating plate, and the air inlet structure is arranged on the ventilating plate.
6. The heat dissipating structure of claim 5, wherein: the ventilation plate is arranged at the middle part or the upper part of the heat dissipation housing.
7. The heat dissipating structure of any of claims 1-6, wherein: at least one group of air inlet structures are arranged along the height direction of the heat dissipation housing, and the number of each group of air inlet structures is at least one and is arranged along the width direction of the heat dissipation housing.
8. The heat dissipating structure of claim 7, wherein: the number of the air inlet structures in each group is multiple, and the air inlet structures are arranged at equal intervals along the width direction of the heat dissipation housing; and the extension length of the air inlet structure is 5% -30% of the width of the heat dissipation housing.
9. The heat dissipating structure of claim 7, wherein: the number of the air inlet structures in each group is one, and the extension length of the air inlet structures is 50% -90% of the width of the heat dissipation housing.
10. An inverter, characterized in that: comprising a heat dissipating structure according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323198405.4U CN221228148U (en) | 2023-11-27 | 2023-11-27 | Heat radiation structure and inverter with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323198405.4U CN221228148U (en) | 2023-11-27 | 2023-11-27 | Heat radiation structure and inverter with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221228148U true CN221228148U (en) | 2024-06-25 |
Family
ID=91573315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323198405.4U Active CN221228148U (en) | 2023-11-27 | 2023-11-27 | Heat radiation structure and inverter with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221228148U (en) |
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2023
- 2023-11-27 CN CN202323198405.4U patent/CN221228148U/en active Active
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