Inverter with mixed air duct

Abstract

The utility model discloses an inverter with a mixed air duct, which comprises a shell, an independent air duct radiator is arranged in the shell, one side or two sides of the independent air duct radiator comprises a first cavity, one end of the shell comprises at least one first air inlet, and the other end of the shell comprises a plurality of first air outlets. Fans are respectively mounted at the plurality of first air outlets; a second air inlet and a second air outlet are formed in the two ends of the independent air duct radiator respectively, the first air inlet, the second air inlet, the second air outlet and the first air outlet form an independent air duct, and the first air inlet, the first cavity and the first air outlet form an open type air duct. The beneficial effect of the utility model is that the problem of non-uniform heat dissipation of products is solved.

Description

Technical Field

[0001] The utility model relates to a power supply electronic product, in particular to an inverter. Background Art

[0002] In power electronic products, since the internal components consume a certain amount of power when working, this part of the heat loss needs to be conducted away by the heat sink inside the shell. When the heat loss reaches a certain value, it is necessary to install a fan on the chassis. Through the action of the fan, the heat on the radiator can be discharged from the chassis as soon as possible, thereby ensuring the normal operation of the internal components of the power supply.

[0003] At present, most small inverters on the market use self-cooling when the heat consumption is not large. When self-cooling cannot meet the heat dissipation requirements, a fan plus an independent radiator is often used. All heating components are placed on the radiator substrate. There are ventilation holes on the front panel of the box, and several fans are installed on the back panel in parallel to extract or blow air to take away the heat from the radiator. This independent air duct radiator structure often increases the thickness, volume and weight of the chassis. For products operating in harsh environmental conditions, it is particularly important to design a plug-in inverter that is thin, small and light while meeting the heat dissipation requirements.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art known to ordinary technicians in this field. Utility Model Content

[0005] The technical problem to be solved by the utility model is: how to solve the problem that the current inverter cannot meet the heat dissipation requirement under a harsh operating environment.

[0006] The utility model solves the above technical problems through the following technical means:

[0007] An inverter with a mixed air duct comprises a shell, wherein the interior of the shell comprises an independent air duct radiator, one side or both sides of the independent air duct radiator comprises a first chamber, one end of the shell comprises at least one first air inlet, and the other end comprises a plurality of first air outlets, and fans are respectively installed at the plurality of first air outlets; the two ends of the independent air duct radiator are respectively a second air inlet and a second air outlet, the first air inlet and the second air inlet, the second air outlet, and the first air outlet form an independent air duct, and the first air inlet and the first chamber and the first air outlet form an open air duct.

[0008] The utility model forms an independent air duct in an independent air duct heat sink in the inverter housing, and forms an open air duct on the side of the independent air duct heat sink, so that diode devices that are sensitive to working temperature can be cooled by independent air ducts, while magnetic devices that are not sensitive to heat, such as reactors and transformers, are attached to the first chamber in the housing to dissipate heat through open air ducts, and each heat dissipation area corresponds to its own fan. The hybrid air duct design of the utility model can solve the problem of uneven heat dissipation of the product. The hybrid air duct design of the utility model can be reasonably arranged according to the height of the internal components of the inverter, effectively compress the height of the product, make the product thinner and smaller, meet the demand for lightweight products, improve the working reliability of the equipment, and meet the product heat dissipation requirements under harsh conditions.

[0009] Preferably, the shell includes a box body, an upper cover, a front panel, and a bottom plate, the upper cover is connected to the top of the box body, the front panel is connected to one end of the box body, and the bottom plate is connected to the bottom of the box body and is encapsulated at the bottom of the independent air duct radiator.

[0010] Preferably, the side wall at the other end of the box body is recessed into the box body to form a fan installation groove, and the fan is located in the fan installation groove.

[0011] The concave shape of the fan installation slot can make the fan not protrude relative to the entire inverter product, and the external dimensions of the inverter are flat, saving floor space, and meeting the requirements of compact structure and convenient transportation.

[0012] Preferably, the independent air duct radiator comprises a plurality of heat dissipation teeth arranged side by side, the independent air duct radiator is connected to a middle position in the housing by bolts, and both sides of the independent air duct radiator comprise a first chamber.

[0013] The heat dissipation teeth of the independent duct radiator can be milled into different tooth spacing, tooth density and tooth height according to power consumption requirements to meet customized needs.

[0014] Preferably, the first air inlet and the plurality of first air outlets are axially arranged.

[0015] More conducive to air flow.

[0016] Preferably, there are four first air outlets, two of which form air ducts with the independent air duct heat sink, and the other two of which form air ducts with the first chamber respectively.

[0017] Preferably, one end of the independent air duct radiator close to the first air outlet is connected to the side wall of the shell through a guide plate, and the air duct of the independent air duct radiator is separated from the air duct in the first chamber.

[0018] Preferably, the first air inlet and the first air outlet are in a grid-like, honeycomb-like, or mesh-like shape or a combination thereof.

[0019] Honeycomb-shaped holes are preferred, which can play the role of electromagnetic shielding.

[0020] Preferably, it also includes a main board, which is fixedly connected to the independent air duct radiator.

[0021] Preferably, it also includes a magnetic device, and the magnetic device is connected in the first chamber.

[0022] The advantages of the utility model are:

[0023] (1) The utility model forms an independent air duct in the independent air duct heat sink in the inverter housing, and forms an open air duct on the side of the independent air duct heat sink. Diode devices that are sensitive to working temperature can be cooled by the independent air duct, while magnetic devices that are not sensitive to heat, such as reactors and transformers, are attached to the first chamber in the housing to dissipate heat through the open air duct. Each heat dissipation area corresponds to its own fan. The hybrid air duct design of the utility model can solve the problem of uneven heat dissipation of the product. The hybrid air duct design of the utility model can be reasonably arranged according to the height of the internal components of the inverter, effectively compressing the height of the product, making the product thinner and smaller, meeting the demand for lightweight products, improving the working reliability of the equipment, and meeting the product heat dissipation requirements under harsh conditions.

[0024] (2) The fan installation slot is concave, which makes the fan not protrude relative to the entire inverter product. The external dimensions of the inverter are flat, saving floor space, and meeting the requirements of compact structure and convenient transportation.

[0025] (3) The heat dissipation teeth of the independent air duct heat sink can be milled into different tooth spacing, tooth density and tooth height according to power consumption requirements to meet customized requirements;

[0026] (4) The first air inlet and the first air outlets are arranged axially, which is more conducive to air flow;

[0027] (5) The first air inlet and the first air outlet of the honeycomb-shaped holes can play the role of electromagnetic shielding. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic structural diagram of an inverter with a hybrid air duct according to an embodiment of the utility model;

[0029] Figure 2 It is an exploded schematic diagram of an inverter with a hybrid air duct according to an embodiment of the utility model;

[0030] Figure 3is a top view of the inverter after the upper cover is removed according to the embodiment of the utility model;

[0031] Figure 4 It is a bottom schematic diagram of an inverter with a mixing air duct according to an embodiment of the utility model;

[0032] Figure 5 It is a schematic diagram of the internal air duct of the inverter with a hybrid air duct according to an embodiment of the utility model;

[0033] Figure 6 This is a bottom schematic diagram of the inverter after the bottom plate is removed according to the embodiment of the utility model;

[0034] Figure 7 This is a cross-sectional view of the utility model inverter with the mainboard PCB removed;

[0035] Numbers in the figure:

[0036] 1. Shell; 11. Box body; 12. Upper cover; 13. Front panel; 14. Bottom plate; 15. Handle; 16. First air inlet; 17. First air outlet; 2. Main board; 3. Fan; 4. Independent air duct radiator; 5. First chamber; DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] Embodiment 1:

[0039] like Figure 1 , Figure 2 As shown, the inverter with a hybrid air duct includes a shell 1 and a main board 2. The shell 1 includes a box body 11, an upper cover 12, a front panel 13, a bottom plate 14, and a handle 15. The upper cover 12 is connected to the top of the box body 11, the front panel 13 is connected to one end of the box body 11, and the other end of the box body 11 is connected to multiple fans 3. The bottom plate 14 is connected to the bottom of the box body 11 and is encapsulated at the bottom of the independent air duct radiator 4.

[0040] Specifically, the box body 11 is a rectangular shell structure. Figure 2As shown, a first air inlet 16 is provided on the left side surface of the box body 11, and the first air inlet 16 includes a plurality of small air inlet holes, and the entire first air inlet 16 area is a rectangular area. The front panel 13 is connected to the left end surface of the box body 11 by bolts, and the front panel 13 is provided with a plurality of vertical strip holes, and the vertical strip holes are aligned with the first air inlet 16 to achieve air intake. Handles 15 are connected to both ends of the front panel 13. Among them, the bottom surface of the box body 11 includes an empty area, which corresponds to the bottom of the independent air duct radiator 4, that is: after the independent air duct radiator 4 is connected to the bottom surface of the box body 11 by bolts, the bottom surface of the independent air duct radiator 4 needs to be encapsulated by the bottom plate 14, refer to Figure 4 , Figure 6 As shown, Figure 4 The bottom diagram of the inverter is shown in Figure 1. Figure 6 It is a schematic diagram of the bottom of the inverter after removing the bottom plate 14. The bottom plate 14 is encapsulated to facilitate cleaning of the inside of the independent air duct radiator 4. If dust accumulates inside, the bottom plate 14 can be removed to clean the independent air duct radiator 4 without disassembling the entire structure for cleaning.

[0041] refer to Figure 4 , Figure 5 As shown, the first air outlet 17 is axially opposite to the first air inlet 16. The first air outlet 17 is divided into four areas. Each first air outlet 17 includes a plurality of small air outlet holes. Each first air outlet 17 is a roughly hexagonal area. The position of the first air outlet 17 in the box body 11 is that the side wall of the box body 11 itself is recessed inward to form a fan installation groove. The first air outlet 17 is arranged in the recessed position, and a fan 3 is installed at each first air outlet 17. The concave form of the fan installation groove can make the fan 3 not protrude relative to the entire inverter product, and the external dimensions of the inverter are flat, saving space, and can meet the requirements of compact structure and convenient transportation.

[0042] like Figure 5 As shown, the housing 1 includes an independent duct radiator 4 inside, and the two sides of the independent duct radiator 4 respectively include a first chamber 5 (5'), wherein the two ends of the independent duct radiator 4 are respectively a second air inlet and a second air outlet, and the second air inlet and the second air outlet are formed between the heat dissipation teeth of the independent duct radiator 4. The independent duct radiator 4 includes a plurality of heat dissipation teeth arranged side by side, and the independent duct radiator 4 is connected to the middle position of the housing 1 by bolts.

[0043] In this embodiment, there are four first air outlets 17, two of which form air ducts with the independent air duct radiator 4, and the other two first air outlets 17 form air ducts with the first chamber 5 (5'). The first air inlet 16 forms an independent air duct with the second air inlet, the second air outlet, and the first air outlet 17, and the first air inlet 16 forms an open air duct with the first chamber 5 (5') and the first air outlet 17.

[0044] The end of the independent air duct radiator 4 close to the two first air outlets 17 in the middle is connected to the side wall of the box body 11 through a guide plate, so that the wind passing through the independent air duct radiator 4 can only be discharged from the two first air outlets 17 in the middle. The heat dissipation teeth of the independent air duct radiator 4 can be milled into different tooth spacings, tooth densities and tooth heights according to power consumption requirements to meet customized requirements.

[0045] The first air inlet 16 and the four first air outlets 17 are axially arranged, which is more conducive to the flow of air.

[0046] See also Figure 7 After cutting off the PCB of the mainboard 2, it can be seen that the heat source of the mainboard 2 is mainly composed of three parts, namely, the independent air duct heat source (area A in the figure), which is mainly composed of some MOS tubes, and the No. 1 chamber heat source (area B in the figure) and the No. 2 chamber heat source (area C in the figure), which are mainly magnetic devices such as reactors and transformers. These devices are large in size and can withstand high temperatures. There is no need to set up a separate radiator. They can be attached to the bottom of the box body 11 and the box body 11 and the two fans 3 on both sides can be used to extract air and dissipate heat. The setting of independent air ducts and open air ducts can dissipate heat for MOS tubes and magnetic devices separately, and the power of the fan 3 can be selected according to the heat dissipation requirements.

[0047] When the present embodiment is working, the mainboard 2 is connected to the top surface of the independent air duct heat sink 4 by means of studs. When the mainboard 2 is working, the heat generated by the MOS tube in the middle can be dissipated by the independent air duct heat sink 4. The independent air duct has the following air ducts: air is taken in from the first air inlet 16, the air flows through the space between the heat dissipation teeth of the independent air duct heat sink 4, and finally is drawn out by the fan 3 at the first air outlet 17 end to achieve heat dissipation. The heat-generating components in the first chambers 5 on both sides are dissipated by air taken in from the first air inlet 16 and by the fans 3 at the first air outlet 17 ends on both sides. In the present embodiment, an independent air duct is formed by the independent air duct heat sink 4 in the inverter housing, and an open air duct is formed on the side of the independent air duct heat sink 4. The diode components that are relatively sensitive to the working temperature can be dissipated by the independent air duct, while the magnetic components that are not sensitive to heat can be dissipated by the open air duct. Each heat dissipation area corresponds to its own fan 3.

[0048] The design of the hybrid air duct in this embodiment can solve the problem of uneven heat dissipation of the product. The design of the hybrid air duct in this embodiment can be reasonably arranged according to the height of the internal components of the inverter, effectively compress the height of the product, make the product thinner and smaller, meet the demand for lightweight product, improve the working reliability of the equipment, and meet the heat dissipation requirements of the product under harsh conditions.

[0049] Embodiment 2:

[0050] like Figure 2 As shown, in this embodiment, the first air inlet 16 and the first air outlet 17 can be in a grid shape, a honeycomb shape, a mesh shape, or a combination thereof.

[0051] However, the first air inlet 16 and the first air outlet 17 are preferably honeycomb holes, which can play a role in electromagnetic shielding.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. Inverter with hybrid air duct, It is characterized in that It includes a shell, the interior of the shell includes an independent air duct radiator, one side or both sides of the independent air duct radiator include a first chamber, one end of the shell includes at least one first air inlet, and the other end includes multiple first air outlets, and fans are respectively installed at the multiple first air outlets; the two ends of the independent air duct radiator are respectively a second air inlet and a second air outlet, the first air inlet and the second air inlet, the second air outlet, and the first air outlet form an independent air duct, and the first air inlet and the first chamber and the first air outlet form an open air duct.

2. The inverter with a hybrid air duct according to claim 1, It is characterized in that The housing comprises a box body, an upper cover, a front panel and a bottom plate, wherein the upper cover is connected to the top of the box body, the front panel is connected to one end of the box body, and the bottom plate is connected to the bottom of the box body and is encapsulated at the bottom of the independent air duct radiator.

3. The inverter with a hybrid air duct according to claim 2, It is characterized in that The side wall at the other end of the box body is recessed into the box body to form a fan installation groove, and the fan is located in the fan installation groove.

4. The inverter with a hybrid air duct according to claim 1, It is characterized in that The independent air duct radiator includes a plurality of heat dissipation teeth arranged side by side. The independent air duct radiator is connected to a middle position in the housing by bolts. Both sides of the independent air duct radiator include a first chamber.

5. The inverter with a hybrid air duct according to claim 1, It is characterized in that The first air inlet and the plurality of first air outlets are axially arranged.

6. The inverter with a hybrid air duct according to claim 1, It is characterized in that There are four first air outlets, two of which form air ducts with the independent air duct heat sink, and the other two first air outlets form air ducts with the first chamber respectively.

7. The inverter with a hybrid air duct according to claim 1, It is characterized in that One end of the independent air duct radiator close to the first air outlet is connected to the side wall of the shell through a guide plate, and the air duct of the independent air duct radiator is separated from the air duct in the first chamber.

8. The inverter with a hybrid air duct according to claim 1, It is characterized in that The first air inlet and the first air outlet are in a grid shape, a honeycomb shape, a mesh shape, or a combination thereof.

9. The inverter with a hybrid air duct according to claim 1, It is characterized in that It also includes a main board, which is fixedly connected to the independent air duct radiator.

10. The inverter with a hybrid air duct according to claim 1, It is characterized in that Also included is a magnetic device connected within the first chamber.

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