Inverter

Abstract

The utility model discloses an inverter, and the inverter comprises a power element, a magnetic element, a cover plate, a bottom plate, a support lug, and a fan. The cover plate and the bottom plate are connected to define a cavity; the power element and the magnetic element are arranged in the cavity; the support lugs are connected with the bottom plate; heat dissipation holes are formed in the bottom plate; and the fan is arranged in the cavity and is close to the bottom plate. Based on the inverter in the technical scheme of the invention, the air can smoothly circulate in the heat dissipation air channel of the cavity at a low cost, and the speed of the air passing through the heat dissipation air channel in the cavity is effectively accelerated.

Description

Technical Field

[0001] The present application relates to the technical field of inverter heat dissipation, and in particular to an inverter. Background Art

[0002] Existing inverters mainly include core components such as power components, magnetic components and heat sinks. Among these components, power components and magnetic components exhibit significant heat dissipation characteristics when working, that is, they will generate a lot of heat when working, and effective heat dissipation measures are required to ensure the stable operation of the equipment. For inverters with high power operation or high heat dissipation requirements, the heat dissipation system of existing inverters either cannot meet the heat dissipation requirements, or the heat dissipation cost is too high.

[0003] In view of this, a new technical solution is urgently needed to solve the above technical problems. Utility Model Content

[0004] The main purpose of the present application is to provide an inverter, aiming to solve the technical problem that the existing inverters are difficult to balance the heat dissipation requirements and heat dissipation costs.

[0005] To achieve the above objectives, the inverter proposed in this application includes:

[0006] Power components, magnetic components, covers, base plates, lugs and fans;

[0007] The cover plate and the bottom plate are connected and surround to form a cavity;

[0008] The power element and the magnetic element are arranged in the cavity;

[0009] The support lug is connected to the bottom plate;

[0010] The bottom plate is provided with heat dissipation holes;

[0011] The fan is arranged in the cavity and close to the bottom plate.

[0012] Optionally, the inverter further includes:

[0013] Air duct baffle;

[0014] The magnetic element is arranged between the air duct baffles.

[0015] Optionally, a heat dissipation structure is provided on the outer surface of the magnetic element.

[0016] Optionally, the inverter further includes:

[0017] heat sink;

[0018] The power element is in direct or indirect contact with the heat sink.

[0019] Optionally, the cavity comprises:

[0020] A first cavity and a second cavity;

[0021] The power element is arranged in the first cavity;

[0022] The magnetic element is disposed in the second cavity.

[0023] Optionally, the first cavity and the second cavity are sealed by welding.

[0024] Optionally, the fan, the air duct baffle and the radiator are all arranged in the second cavity.

[0025] Optionally, an explosion-proof valve is also provided in the first cavity.

[0026] Optionally, a sealing strip is provided on the cover plate, a waterproof edge is provided on the first cavity, and the cover plate and the first cavity are sealed and connected via the sealing strip and the waterproof edge.

[0027] Optionally, sealing strips are provided on the magnetic element and the heat sink.

[0028] Beneficial effects of the present application: Through the inverter heat dissipation design of the present application, a heat dissipation duct flowing upward and downward is formed, and through the arrangement of the upper and lower bottom plate heat dissipation holes and the support ears, the air can flow smoothly in the heat dissipation duct of the cavity at a relatively low cost. The fan assembly also effectively accelerates the speed of air passing through the heat dissipation duct in the cavity at a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0030] Figure 1 This is a schematic diagram of the external structure of an inverter according to an embodiment of the present application;

[0031] Figure 2 A schematic diagram of the heat dissipation direction of an inverter according to an embodiment of the present application;

[0032] Figure 3 This is a schematic diagram of the internal structure of the second cavity of an inverter embodiment of the present application;

[0033] Figure 4 This is a schematic diagram of the structure of a magnetic element of an inverter according to an embodiment of the present application;

[0034] Figure 5 This is a schematic diagram of the heat sink structure of an inverter embodiment of the present application.

[0035] Description of Figure Numbers:

[0036] Label name Label name 1 Lugs 2 Cover 3 First cavity 4 Second cavity 5 Base Plate 401 Air outlet 402 Air Inlet 403 Fan 404 heat sink 405 Magnetic components 406 Air duct baffle 4041 The first sealing strip 4042 Heat dissipation substrate 4043 Fins 4051 Second sealing strip 4052 Heat dissipation structure

[0037] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the external structure of an inverter according to an embodiment of the present application. As shown in the figure, the inverter includes:

[0040] Power element (not shown), magnetic element 405, cover plate 2, bottom plate 5, lug 1 and fan 403;

[0041] The cover plate 2 and the bottom plate 5 are connected and surround to form a cavity;

[0042] The power element and the magnetic element 405 are arranged in the cavity;

[0043] The support ear 1 is connected to the bottom plate 5;

[0044] The bottom plate 5 is provided with heat dissipation holes;

[0045] The fan 403 is disposed in the cavity and close to the bottom plate 5 .

[0046] For the inverter, the main structure mainly includes power components and magnetic components 405, a PCB (Printed Circuit Board) and a casing.

[0047] In this embodiment, the cover plate 2 includes a front, back and side shell plate, and the bottom plate 5 includes an upper and lower bottom plate or a top plate (to distinguish the upper and lower bottom plates, the bottom plate 5 is divided into an upper bottom plate and a lower bottom plate). The cover plate 2 and the bottom plate 5 can be connected and surrounded to form a hexahedral cavity.

[0048] The power element and the magnetic element 405 are arranged at different positions in the cavity. For example, the magnetic element 405 can be arranged above the power element and close to the upper base plate.

[0049] The upper and lower bottom plates are provided with relatively aligned air inlets 402 and air outlets 401, which is conducive to the rapid discharge of heat from the inverter from the aligned wind direction. The air outlet 401 and the air inlet 402 are both composed of multiple heat dissipation holes, and the shape of the heat dissipation holes is not limited.

[0050] The upper and lower bottom plates can be provided with lugs 1 on both sides close to the side plates. The connection between the lugs 1 and the bottom plate 5 can be welding or threaded. The function of the lugs 1 on the lower bottom plate is mainly to support the inverter and to keep a certain height difference between the bottom of the inverter and the ground or platform, which is convenient for bottom ventilation and air intake. The function of the lugs 1 on the upper bottom plate can be used as handles through a hollow design to facilitate carrying the inverter.

[0051] The support ear 1 can be made of steel material and has a strong load-bearing capacity, so that it can fully support the weight of the entire inverter box during transportation and assembly.

[0052] The fan 403 is arranged in the cavity and close to the lower bottom plate. Figure 2 , Figure 2 This is a schematic diagram of the heat dissipation wind direction of an inverter embodiment of the present application; the fan 403 can be turned on to allow air to enter from the bottom of the inverter, and the air body will exhaust the heat of components such as power elements and magnetic elements 405 from the upper base plate along the cavity from bottom to top.

[0053] Through the inverter heat dissipation design in this application, a heat dissipation duct flowing upward and downward is formed, and through the arrangement of the upper and lower bottom plate heat dissipation holes and the ears, the air can flow smoothly in the heat dissipation duct of the cavity at a relatively low cost. The fan assembly also effectively accelerates the speed of air passing through the heat dissipation duct in the cavity at a low cost.

[0054] Optionally, in one embodiment, the inverter further includes:

[0055] Air duct baffle 406;

[0056] The magnetic element 405 is disposed between the air duct baffles 406 .

[0057] Please refer to Figure 3 , Figure 3This is a schematic diagram of the internal structure of the second cavity of an inverter embodiment of the present application. Two air duct baffles 406 are arranged in the cavity, and the magnetic element 405 is installed between the two air duct baffles 406. Through such an air duct design, the gathering and flow direction of the air volume can be further concentrated, and the heat dissipation capacity of the magnetic element 405 and the components between the air duct baffles 406 can be improved.

[0058] Optionally, in one embodiment, a heat dissipation structure 4052 is disposed on the outer surface of the magnetic element 405 .

[0059] Please refer to Figure 4 , Figure 4 This is a schematic diagram of the structure of a magnetic element of an inverter according to an embodiment of the present application.

[0060] Since the magnetic element 405 is a component with relatively high heat generation, in order to further dissipate the large amount of heat generated by the element during operation, a heat dissipation structure 4052, such as heat dissipation teeth, can be set on the outer surface of the element, so that when it is working, the internal heat can be quickly and effectively conducted to the tooth end, and the heat can be quickly discharged from the inverter under the action of the fan 403.

[0061] Optionally, in one embodiment, the inverter further includes:

[0062] Radiator 404;

[0063] The power element is in direct or indirect contact with the heat sink 404 .

[0064] Please refer to Figure 5 , Figure 5 This is a schematic diagram of the heat sink structure of an inverter embodiment of the present application.

[0065] In addition to the magnetic element 405, another component with a relatively large heat generation is the power element. In order to improve the heat dissipation of the power element, the power element and the heat sink 404 can also be directly or indirectly contacted and connected. The direct contact here, as the name implies, refers to the power element being attached to the heat absorbing surface of the heat sink 404, and the indirect contact refers to the power element being contacted and connected to the heat sink 404 through an intermediate medium or structure. Through the design of the heat sink 404, the heat of the power element is timely and effectively introduced into the fins 4043 of the heat sink 404 through the heat dissipation substrate 4042, and then the fan 403 guides the heat out of the inverter, which further improves the heat dissipation capacity of the inverter.

[0066] Optionally, in one embodiment, the cavity comprises:

[0067] A first cavity 3 and a second cavity 4;

[0068] The power element is arranged in the first cavity 3;

[0069] The magnetic element 405 is disposed in the second cavity 4 .

[0070] In order to avoid mutual influence such as electromagnetic interference between the power element and the magnetic element 405 during operation, the cavity can be divided into a first cavity 3 and a second cavity 4, the power element is arranged in the first cavity 3, and the magnetic element 405 is arranged in the second cavity 4, the first cavity 3 and the second cavity 4 can be welded and sealed, and the two cavities can be separated by an interlayer heat-conducting partition, which can be an aluminum substrate, and the magnetic element 405 and the power element can be fixedly arranged on both sides of the interlayer heat-conducting partition, respectively.

[0071] Optionally, in one embodiment, the fan 403 , the air duct baffle 406 and the radiator 404 are all disposed in the second cavity 4 .

[0072] The fan 403 , the air duct baffle 406 and the radiator 404 may be centrally arranged in the second cavity 4 , and the corresponding air outlet 401 and air inlet 402 may be respectively arranged on one side of the bottom plate 5 aligned with the second cavity 4 .

[0073] The purpose of this design is to further concentrate the air duct to improve the heat dissipation efficiency. The heat generated by the magnetic element 405 and the power element will be conducted to the second cavity 4, and guided out of the inverter together under the action of the fan 403, which can also reduce the power and cost of the fan 403. The fan 403 with high power and large volume can also effectively bring the heat to the outside.

[0074] Optionally, in one embodiment, an explosion-proof valve is further provided in the first cavity 3 .

[0075] The first cavity 3 is provided with an explosion-proof valve, which can adjust the internal and external pressure difference and the pressure difference between the two cavities while having a higher protection level, thereby improving the stability of the inverter operation and heat dissipation process.

[0076] Optionally, in one embodiment, a sealing strip (not shown) is provided on the cover plate 2, a waterproof edge is provided on the first cavity 3, and the cover plate 2 and the first cavity 3 are sealed and connected via the sealing strip and the waterproof edge.

[0077] The purpose of such design is to improve the waterproof and airtightness of the first cavity 3, to achieve at least IP66 level of protection, and to prevent external dust and moisture from entering the first cavity 3 to affect the power components and other components therein due to moisture and contamination.

[0078] Optionally, in one embodiment, a sealing strip is provided on both the magnetic element 405 and the heat sink 404 .

[0079] A first sealing strip 4041 is provided on the surface of the heat sink 404 near the first cavity 3. The heat sink 404 can be installed on an interlayer heat-conducting baffle plate. The interlayer heat-conducting baffle plate can be provided with a hole. The heat sink 404 is embedded in the hole. The first sealing strip 4041 ensures the sealing of the first cavity 3. The magnetic element 405 is also provided with a second sealing strip 4051. The magnetic element 405 can also be embedded in another hole of the interlayer heat-conducting baffle plate. Similarly, the second sealing strip 4051 ensures the sealing of the first cavity 3.

[0080] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the application concept of the present application, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present application.

Claims

1. An inverter, characterized in that: The inverter comprises: Power components, magnetic components, covers, base plates, lugs and fans; The cover plate and the bottom plate are connected and surround to form a cavity; The power element and the magnetic element are arranged in the cavity; The support lug is connected to the bottom plate; The bottom plate is provided with heat dissipation holes; The fan is arranged in the cavity and close to the bottom plate.

2. The inverter according to claim 1, characterized in that: The inverter further comprises: Air duct baffle; The magnetic element is arranged between the air duct baffles.

3. The inverter according to claim 1, characterized in that: The outer surface of the magnetic element is provided with a heat dissipation structure.

4. The inverter according to claim 1, characterized in that: The inverter further comprises: heat sink; The power element is in direct or indirect contact with the heat sink.

5. The inverter according to claim 1, characterized in that: The cavity comprises: A first cavity and a second cavity; The power element is arranged in the first cavity; The magnetic element is disposed in the second cavity.

6. The inverter according to claim 5, characterized in that: The first cavity and the second cavity are connected by welding and sealing.

7. The inverter according to claim 6, characterized in that: The fan, the air duct baffle and the radiator are all arranged in the second cavity.

8. The inverter according to claim 7, characterized in that: An explosion-proof valve is also arranged in the first cavity.

9. The inverter according to claim 8, characterized in that: The cover plate is provided with a sealing strip, the first cavity is provided with a waterproof edge, and the cover plate and the first cavity are sealed and connected via the sealing strip and the waterproof edge.

10. The inverter according to claim 9, characterized in that: The magnetic element and the radiator are both provided with sealing strips.

Images