Inverter heat dissipation device

Abstract

The utility model discloses an inverter heat dissipation device, which relates to the technical field of thermal design and comprises a box body, an air duct shell and a fan. A partition plate is arranged at the bottom of the box body, a radiator substrate is embedded in the partition plate, a heating body is attached to the upper side of the radiator substrate, and a plurality of radiator fins parallel to the first direction are arranged on the lower side of the radiator substrate; the air duct shell is arranged on the lower side of the partition plate and located around the radiator fins, and an air duct backboard is arranged at the bottom of the air duct shell. The at least two fans are arranged on the two sides of the radiator fins in the first direction in a staggered mode; air inlets are formed in the positions, corresponding to the fans, of the two sides of the air duct shell in the first direction, and air outlets used for exhausting hot air are further formed in the side wall of the air duct shell. Through the arrangement, the uniformity of heat dissipation of the heating body can be improved, and the utilization rate of air can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal design, and particularly relates to an inverter heat dissipation device. Background Art

[0002] In existing inverters, when forced air cooling is adopted for heat dissipation, conventional air duct forms are as shown in Figure 1 and Figure 2 Air enters the air duct from one side and flows out from the other side. During this process, it absorbs the heat on the radiator fins, thereby cooling the heating elements closely attached to the radiator inside the box.

[0003] Since the air continuously absorbs heat when flowing through the fin gaps, the air temperature gradually increases. The air temperature near the air outlet must be higher than that near the air inlet. Considering that a certain temperature difference is required for heat transfer, the larger the temperature difference, the better the heat transfer effect, and the smaller the temperature difference, the worse the heat transfer effect. Therefore, according to the heat transfer path: heating element - radiator fins - air, on the radiator, the temperature of the radiator at the position of the heating element near the air outlet will be higher than that of the radiator at the position of the heating element near the air inlet. When reflected on the heating element, it will be that the temperature of the heating element near the air outlet is higher than that of the heating element near the air inlet. There may be a situation where the temperature of the heating element near the air outlet is close to or exceeds the maximum allowable temperature, while the temperature of the heating element near the air inlet still has a certain margin from the maximum allowable temperature.

[0004] In the existing technical solutions, there is a certain gap between the radiator fins and the box. A part of the cold air introduced by the fan directly flows to the outlet through this gap without participating in absorbing the heat on the fins. This part of the air is equivalent to being completely wasted, resulting in a reduction in the overall utilization rate of the air.

[0005] Therefore, how to provide an inverter heat dissipation device to at least partially solve the above drawbacks is a technical problem that those skilled in the art need to solve currently. Summary of the Utility Model

[0006] The purpose of the utility model is to provide an inverter heat dissipation device, which can improve the uniformity of heat dissipation for the heating element and the utilization rate of air.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] An inverter heat dissipation device, comprising:

[0009] A box body, with a partition provided at the bottom, a radiator substrate is embedded in the partition, a heating element is attached to the upper side of the radiator substrate, and a plurality of radiator fins parallel to the first direction are provided on the lower side of the radiator substrate;

[0010] The air duct housing is arranged on the lower side of the partition and around the radiator fins, and an air duct back plate is arranged at the bottom of the air duct housing;

[0011] At least two fans are staggered on both sides of the radiator fins in the first direction;

[0012] Air inlets are arranged on both sides of the air duct housing in the first direction and corresponding to the fans, and air outlets for discharging hot air are also arranged on the side walls of the air duct housing.

[0013] Preferably, the air outlets are arranged on the side walls of the air duct housing in the second direction, and the air outlets are located at one end away from the fans.

[0014] Preferably, two air guide plates are arranged between the air inlets and the radiator fins, and the opening of the closed air inlet channel formed by the two air guide plates gradually shrinks;

[0015] One end of the air guide plate in the first direction abuts against the radiator fins, and the other end abuts against the inner side wall of the air duct housing.

[0016] Preferably, the fans are installed between the two air guide plates through fan sheet metal parts.

[0017] Preferably, check baffles are arranged between the side walls of the air duct housing in the second direction and the radiator fins to prevent air from flowing back through the gap between the radiator fins and the air duct housing.

[0018] Preferably, the two ends of the check baffle in the third direction respectively abut against the partition and the air duct back plate, and the check baffle cooperates with the air guide plate to form a closed air outlet channel.

[0019] Preferably, screw holes are arranged at both ends of the air guide plate in the third direction, and one end of the air guide plate is connected to the partition and the other end is connected to the air duct back plate through screws.

[0020] Preferably, there are three fans, and an air outlet for the air discharged by the fans on the other side is arranged on the air duct back plate between the two fans on the same side, and an air outlet grille is arranged at the air outlet.

[0021] Preferably, an air inlet grille is arranged at the air inlet, and an air outlet grille is arranged at the air outlet.

[0022] Preferably, both the air guide plate and the check baffle are made of heat-conducting metal materials.

[0023] Compared with the above background art, an inverter heat dissipation device provided by the present utility model includes: a box body, an air duct shell, and a fan; a partition is provided at the bottom of the box body, a radiator substrate is embedded in the partition, a heating element is attached to the upper side of the radiator substrate, and a plurality of radiator fins in the first direction are provided on the lower side of the radiator substrate; the air duct shell is provided on the lower side of the partition and surrounds the radiator fins, and an air duct back plate is provided at the bottom of the air duct shell; at least two fans are staggered on both sides of the radiator fins in the first direction; air inlets are provided on both sides of the air duct shell in the first direction and corresponding to the fans, air outlets are provided on both sides of the air duct shell in the second direction and at the end away from the fans, and air outlets for discharging hot air are also provided on the side walls of the air duct shell.

[0024] Specifically, by arranging a plurality of fans facing each other and staggered on both sides of the radiator fins in the first direction, air can be blown into the radiator fins from different directions, avoiding the low air temperature at the end where the fans are installed and the high air temperature at the outlet end, resulting in a high temperature on one side and a low temperature on the other side of the radiator fins, thereby avoiding poor temperature uniformity among multiple heating elements, reducing the temperature difference between the heating elements and the maximum temperature of the heating elements, and reducing potential risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0026] Figure 1 Schematic diagram of the B-B cross-section in the prior art provided by the embodiment of the present utility model;

[0027] Figure 2 Schematic diagram of the A-A cross-section in the prior art provided by the embodiment of the present utility model;

[0028] Figure 3 Schematic diagram of the D-D cross-section structure of an embodiment;

[0029] Figure 4 For Figure 3 the C-C cross-section structure diagram in;

[0030] Figure 5 Schematic diagram of the F-F cross-section structure of another embodiment;

[0031] Figure 6 For Figure 5 the E-E cross-section structure diagram in.

[0032] Wherein:

[0033] 100 - Box body, 101 - Accommodating cavity;

[0034] 200 - Air duct housing, 201 - Air duct;

[0035] 300 - Partition board, 301 - Opening;

[0036] 400 - Circuit board;

[0037] 501 - First heating element, 502 - Second heating element, 503 - Third heating element, 504 - Fourth heating element, 505 - Fifth heating element, 506 - Sixth heating element;

[0038] 600 - Power device;

[0039] 700 - Fan, 701 - Fan sheet metal part, 702 - Air inlet grille, 703 - Air outlet grille, 704 - Air duct back plate, 705 - Air duct back plate air outlet grille, 706 - Air deflector;

[0040] 707 - Check damper;

[0041] 800 - Heat sink substrate, 801 - Heat sink fins. Detailed implementation mode

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] In order to enable those skilled in the art in the technical field to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation modes.

[0044] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0045] The purpose of the present invention is to provide an inverter heat dissipation device, which can improve the uniformity of heat dissipation for the heating element and improve the utilization rate of air.

[0046] It should be noted that in this embodiment, the direction of X in the attached drawings is defined as the first direction, the direction of Y is defined as the second direction, and the direction of Z is defined as the third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

[0047] To achieve the above object, the present utility model provides the following technical solutions:

[0048] Please refer to Figures 3 to 6 , this embodiment provides an inverter heat dissipation device, including: a box body 100, an air duct shell 200, and a fan 700; a partition 300 is provided at the bottom of the box body 100, a radiator substrate 800 is embedded in the partition 300, a heating element is attached to the upper side of the radiator substrate 800, and a plurality of radiator fins 801 parallel to the first direction are provided on the lower side of the radiator substrate 800; the air duct shell 200 is provided on the lower side of the partition 300 and is located around the radiator fins 801, and an air duct back plate 704 is provided at the bottom of the air duct shell 200; at least two fans 700 are staggered on both sides of the radiator fins 801 in the first direction; air inlets are provided on both sides of the air duct shell 200 in the first direction and corresponding to the positions of the fans 700, and air outlets for discharging hot air are further provided on the side walls of the air duct shell 200.

[0049] Specifically, as Figure 3 and Figure 4 shown, various components such as heating elements, a circuit board 400, and a power device 600 are installed in the accommodation cavity 101 formed inside the box body 100; the bottom of the box body 100 is integrally provided with a partition 300, and an opening 301 is provided in the middle of the partition 300 for installing the radiator substrate 800. A plurality of uniformly distributed heating elements are installed on the upper side of the radiator substrate 800. In this embodiment, a first heating element 501, a second heating element 502, a third heating element 502, and a fourth heating element 504 are respectively provided at the four corners. A circuit board 400 is installed on the upper side of these heating elements, and a power device 600 is further installed on the upper side of the circuit board 400; at the same time, a plurality of radiator fins 801 are arranged at intervals and in parallel on the lower side of the heat dissipation substrate. In this way, the heat generated by each heating element can be transferred to the radiator substrate 800 and dissipated through the radiator fins 801.

[0050] Furthermore, in order to enhance the heat dissipation effect, a number of fans 700 are arranged in the lower half where the radiator fins 801 are located, and the fans blow air along the first direction through the gaps of the radiator fins 801. At the same time, in order to protect the radiator fins 801 and the installed fans 700, a duct housing 200 is arranged around the radiator fins 801 on the lower side of the box body 100, and a duct back plate 704 is arranged at the bottom of the duct housing 200. The duct back plate 704 cooperates with the duct housing 200 and the partition plate 300 at the top to enclose the heat dissipation components at the bottom of the box body 100. Of course, there is a gap between the duct housing 200 and the radiator fins; correspondingly, in order to transfer the heat on the radiator fins 801 out through the air, air inlets and air outlets are arranged on the side walls of the duct housing 200. Since two fans 700 are arranged in this embodiment, two air inlets are arranged. The two fans 700 are arranged opposite to each other and staggered, so the two air inlets are respectively arranged on the opposite side walls of the duct housing 200 along the first direction, and the position of the air outlet can be set according to the actual situation. For example, the air outlet can be set opposite to the corresponding air inlet, that is, the air outlet is also arranged on the two side walls of the duct housing 200 in the first direction, so that the air outlet can quickly discharge the air that has absorbed heat.

[0051] It can be understood that by arranging multiple fans 700 opposite to each other and staggered on both sides of the radiator fins 801 in the first direction, air can be blown into the radiator fins 801 from different directions, avoiding the situation that the air temperature at one end where the fan 700 is installed is low while the air temperature at the outlet end is high, resulting in uneven temperature on one side of the radiator fins 801. Furthermore, it avoids poor temperature uniformity among multiple heating elements, reduces the temperature difference between the heating elements and the highest temperature of the heating elements, and reduces potential risks.

[0052] Preferably, the air outlets are arranged on the two side walls of the duct housing in the second direction, and the air outlets are located at the end away from the fans.

[0053] Specifically, as Figure 3 shown, in this embodiment, in order to prevent the air inhaled by one fan 700 from being the hot air discharged by another fan 700 to the outside, the air outlets are arranged on the two side walls without air inlets, that is, the air outlets corresponding to the air inlets arranged on both sides of the duct housing 200 along the first direction are arranged on the two side walls of the duct housing 200 in the second direction; in this way, it avoids the situation that the hot air discharged by one fan 700 to the outside is inhaled by another fan 700, resulting in an increase in the overall temperature of the heating elements caused by the increase in the inlet air temperature. Preferably, two air guide plates 706 are arranged between the air inlets and the radiator fins 801, and the opening 301 of the closed air inlet channel formed by the two air guide plates 706 tapers.

[0054] Specifically, as Figure 3And Figure 5 As shown, the fans 700 of the inverter heat dissipation device are arranged in an interleaved manner facing each other, and the air blown by different fans 700 flows relatively. In order to prevent the air between the fans 700 from interfering with each other, for example, one fan 700 inhales the hot air discharged to the outside by another fan 700, two air guide plates 706 are arranged between the air inlet and the radiator fins 801, and the fans 700 are installed between the air guide plates 706. In this way, the air blown by one fan 700 can be staggered from the air of another fan 700, ensuring that the inhaled air is cold air, and thus ensuring the heat dissipation effect on the heating element.

[0055] In addition, the shape of the air guide plate 706 is an arc-shaped plate, and the two air guide plates 706 can form an air inlet channel with a gradually shrinking trumpet-shaped opening 301. Such a setting can increase the flow rate of the air entering the radiator fins 801, effectively increase the cooling effect on the radiator fins 801, and thus increase the heat dissipation effect on the heating element.

[0056] Preferably, one end of the air guide plate 706 in the first direction abuts against the radiator fins 801, and the other end abuts against the inner side wall of the air duct housing 200.

[0057] It can be understood that in order to further ensure that each fan 700 does not affect each other during operation, when the air guide plate 706 is set, one end close to the radiator fins 801 directly abuts against the radiator fins 801, and the opposite end directly abuts against the position of the inner side wall of the air duct housing 200 at the air inlet. In this way, the air inhaled by the fan 700 can only enter the radiator fins 801 from this air inlet channel, and will not inhale air from other positions, ensuring the cooling effect on the radiator fins 801.

[0058] Preferably, the fan 700 is installed between the two air guide plates 706 through a fan sheet metal part 701.

[0059] In this embodiment, the fan 700 is fixed to the fan sheet metal part 701 by screws, and the fan sheet metal part 701 is fixed to the left and right air guide plates 706 by screws, forming an integral body of "fan 700 - fan sheet metal part 701 - air guide plate 706".

[0060] Preferably, check baffles 707 are arranged between the two side walls of the air duct housing 200 in the second direction and the radiator fins 801 to prevent air from flowing back through the gap between the radiator fins 801 and the air duct housing 200.

[0061] Specifically, as shown in Figure 3 And Figure 5As shown in the figure, check valves 707 are provided on the two side arms of the air duct housing 200 where no air inlet is provided. The provision of the check valves 707 can cooperate with the air deflector 706 to effectively prevent air from flowing away through the gap between the radiator fins 801 and the side wall of the box body 100 without passing through the radiator fins 801 and not participating in heat absorption, resulting in a decrease in the utilization rate of air. In addition, the check valves 707 can also prevent the hot air that has already participated in heat absorption from flowing back again, affecting the cooling of the radiator fins 801.

[0062] Preferably, the two ends of the check valve 707 in the third direction respectively abut against the partition 300 and the air duct back plate 704, and the check valve 707 cooperates with the air deflector 706 to form a closed air outlet channel.

[0063] Furthermore, the four sides of the check valve 707 respectively abut against the partition 300, the air duct back plate 704, the inner side wall of the air duct housing 200, and the radiator fins 801, and air cannot flow through here at all. At the same time, it can cooperate with the air deflector 706 to form a completely closed air outlet channel, which can stably discharge the air that has absorbed heat to the outside.

[0064] Preferably, screw holes are provided at the two ends of the air deflector 706 in the third direction, and one end of the air deflector 706 is connected to the partition 300 and the other end is connected to the air duct back plate 704 by screws.

[0065] In this embodiment, screw holes are reserved at both ends of the air deflector 706 where it contacts the box body 100 and the air duct back plate 704. First, the whole of "fan 700 - fan sheet metal part 701 - air deflector 706" is fixed to the box body 100 by screws through the holes reserved at one end of the air deflector 706. One end of the air deflector 706 contacts the radiator fins 801, and then the air duct back plate 704 and the box body 100 are fixed together by screws. At this time, the holes reserved at the other end of the air deflector 706 coincide with the corresponding holes on the air duct back plate 704. Finally, the air deflector 706 and the air duct back plate 704 are fixedly connected by screws. In this way, the whole formed by "fan 700 - fan sheet metal part 701 - air deflector 706" is fixed at one end to the box body 100 and at the other end to the air duct back plate 704, ensuring stability.

[0066] Preferably, there are three fans 700, and an air outlet for the air discharged by the fans on the other side is provided on the air duct back plate 704 between the two fans 700 on the same side, and an air outlet grille 703 is provided at the air outlet.

[0067] Another embodiment is also provided in this article, specifically as Figure 5 and Figure 6As shown in the figure, in this embodiment, a fifth heating element 505 and a sixth heating element 506 are further provided, and three fans 700 are correspondingly provided. The three fans 700 are also arranged in an opposing and staggered manner. Among the two sides of the radiator fins 801 in the first direction, one side has two fans 700 arranged at both ends, and the other side has one fan 700 arranged in the middle. Different from the embodiment with two fans 700, in the embodiment with three fans 700, an air outlet corresponding to the position where the middle fan 700 blows air is provided on the air duct back plate 704. This setting is to prevent the hot air blown out by the middle fan 700 from being re-sucked by the two fans 700 on both sides, thereby affecting the overall heat dissipation effect.

[0068] Preferably, an air inlet grille 702 is provided at the air inlet, and an air outlet grille 703 is provided at the air outlet.

[0069] In the embodiments provided herein, air inlet grilles 702 are provided at all air inlets, and air outlet grilles 703 are provided at all air outlets. The settings of the air inlet grilles 702 and the air outlet grilles 703 can filter the air entering the radiator fins 801 to prevent foreign objects from being sucked into the fans 700. Of course, an air duct back plate air outlet grille 705 is also provided at the air outlet on the air duct back plate 704.

[0070] Preferably, both the air guide plate 706 and the check damper 707 are made of heat-conductive metal materials.

[0071] It can be understood that in order to extend the service life of the inverter heat dissipation device and considering the overall heat dissipation efficiency, the materials of the air guide plate 706 and the check damper 707 are both set to heat-conductive metal materials.

[0072] In summary, this document provides an inverter heat dissipation device. First, by arranging multiple fans 700 opposite to each other, the following phenomenon when all the fans 700 are located on the same side is avoided, that is, the air flow temperature on the cross-section parallel to the air duct backplane 704 and located in the middle of the radiator fins 801 is high on one side and low on the other side. After the fans 700 are arranged staggeredly, the high-temperature air and low-temperature air are distributed alternately on this cross-section, thereby avoiding the temperature of the radiator fins 801 being high on one side and low on the other side, ultimately improving the uniformity of the temperature between the heating elements in contact with the radiator, reducing the temperature difference between the heating elements and the maximum temperature of the heating elements, and reducing potential risks; in addition, when the two fans 700 are arranged opposite to each other, the air outlet is set on the side, avoiding the situation where the hot air discharged from the outside by one fan 700 is sucked in by the other fan 700, thereby causing the overall temperature of the heating elements to increase due to the increase in the inlet air temperature; when multiple fans 700 are arranged staggeredly, the fan 700 in the middle discharges hot air through the air outlet opened on the air duct backplane 704. By setting the air inlet and the air outlet on mutually perpendicular planes, the phenomenon that the hot air discharged by one fan 700 is sucked in by the other fan 700 and causes the inlet air temperature to increase is avoided; in addition, by setting the air guide plate 706 and the check damper 707 to limit the air flow direction of each fan 700, the air introduced into the flow channel by the fan 700 can all pass through the gaps between the radiator fins 801, improving the utilization efficiency of the air.

[0073] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0074] The various embodiments in this specification are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0075] The above has introduced the embodiments provided by the present utility model in detail. Specific examples are used in this document to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. An inverter heat dissipation device, characterized in that, Comprising: A box body with a partition provided at the bottom. The partition is embedded with a radiator substrate. A heating element is attached to the upper side of the radiator substrate, and a plurality of radiator fins parallel to the first direction are provided on the lower side of the radiator substrate; An air duct housing is provided under the partition and surrounds the radiator fins. The bottom of the air duct housing is provided with an air duct back plate; At least two fans are staggeredly arranged on both sides of the radiator fins in the first direction; Air inlets are provided on both sides of the air duct housing in the first direction and corresponding to the positions of the fans. An air outlet for discharging hot air is also provided on the side wall of the air duct housing.

2. The inverter heat dissipation device according to claim 1, wherein The air outlet is provided on the side walls of the air duct housing in the second direction, and the air outlet is located at one end away from the fans.

3. The inverter heat dissipation device according to claim 2, characterized in that, Two air guide plates are provided between the air inlet and the radiator fins. The opening of the closed air inlet channel formed by the two air guide plates gradually tapers; One end of the air guide plate in the first direction abuts against the radiator fin, and the other end abuts against the inner side wall of the air duct housing.

4. The inverter heat dissipation device according to claim 3, characterized in that, The fan is installed between the two air guide plates through a fan sheet metal part.

5. The inverter heat dissipation device according to claim 3, wherein, Check baffles are provided between the side walls of the air duct housing in the second direction and the radiator fins to prevent air from flowing back through the gap between the radiator fins and the air duct housing.

6. The inverter heat dissipation device according to claim 5, characterized in that, The two ends of the check baffle in the third direction respectively abut against the partition and the air duct back plate, and the check baffle cooperates with the air guide plate to form a closed air outlet channel.

7. The inverter heat dissipation device according to claim 6, characterized in that, Screw holes are provided at both ends of the air guide plate in the third direction. One end of the air guide plate is connected to the partition and the other end is connected to the air duct back plate by screws.

8. The inverter heat dissipation device according to any one of claims 1-7, characterized in that, There are three fans. An air outlet for the air discharged by the fans on the other side is provided on the air duct back plate between the two fans on the same side, and an air outlet grille is provided at the air outlet.

9. The inverter heat dissipation device according to any one of claims 1-7, characterized in that, An air inlet grille is provided at the air inlet, and an air outlet grille is provided at the air outlet.

10. The inverter heat dissipation device according to any one of claims 5-7, characterized in that, Both the air guide plate and the check baffle are made of heat-conducting metal materials.

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