Inverter

Abstract

The utility model discloses an inverter, and particularly relates to the field of inverters, which comprises a cabinet, an installation chamber is arranged in the cabinet, a wind scooper is fixedly arranged on the back of the cabinet, a first fan is detachably arranged at the top end in the installation chamber, a magnetic component is detachably arranged at the bottom end in the installation chamber, and a heat exchanger is arranged at the top of the magnetic component. A second fan is arranged at the top of the heat exchanger, a power module is arranged between the magnetic component and the first fan and detachably installed in the middle of the installation chamber, a bus capacitor is fixedly installed on the back face of the power module, and a first alternating current switch assembly is arranged on the front face of the magnetic component. On the premise that the space utilization rate in the mounting chamber is improved, the heat dissipation effect in the mounting chamber is improved, the power density of the product is greatly improved, and compared with similar products in the industry, due to the small size, the transportation cost can be reduced, and the mounting space can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of inverter technology, and more specifically, to an inverter. Background Technology

[0002] A photovoltaic inverter is an inverter that converts the variable DC voltage generated by photovoltaic solar panels into AC power at the mains frequency. It is the interface device between the solar power generation system and the power grid. In addition to ensuring the circuit design and implementation, the layout and heat dissipation of the various components inside the photovoltaic inverter must also be ensured.

[0003] Currently, most photovoltaic inverters on the market are installed indoors in inverter rooms due to their low structural protection level; if they need to be installed outdoors, they need to be installed in existing shipping containers.

[0004] Existing photovoltaic inverters are installed inside shipping containers, resulting in a non-compact overall structure, large size, large space occupation, and poor heat dissipation.

[0005] For the reasons mentioned above, there is an urgent need to develop a photovoltaic inverter that is small in size, compact in structure, has good heat dissipation, and has a high protection level. Utility Model Content

[0006] The present invention provides an inverter that addresses the problem that existing photovoltaic inverters are installed inside shipping containers, resulting in a non-compact overall structure, large size, large space occupation, and poor heat dissipation.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an inverter, including a cabinet, an installation chamber inside the cabinet, a wind guide shroud fixedly installed on the back of the cabinet, a fan detachably installed at the top of the installation chamber, a magnetic component detachably installed at the bottom of the installation chamber, a heat exchanger installed on the top of the magnetic component, a fan detachably installed on the top of the heat exchanger, a power module between the magnetic component and the fan detachably installed in the middle of the installation chamber, a bus capacitor fixedly installed on the back of the power module, an AC switch assembly detachably installed on the front of the magnetic component, and a DC switch assembly detachably installed on one side of the AC switch assembly detachably installed.

[0008] In a preferred embodiment, the magnetic components and the bus capacitor are arranged vertically in a corresponding manner, and the power module and the AC switch assembly are arranged vertically in a corresponding manner.

[0009] In a preferred embodiment, an air inlet is provided at the bottom of the air guide shroud, and an air outlet is provided at the top of the air guide shroud, with the air outlet corresponding to the installation chamber and the power module.

[0010] In a preferred embodiment, a partition 1 is provided between the fan 1 and the power module, and the partition 1 is fixedly and detachably installed inside the installation chamber. A partition 2 is provided on one side of the power module, and the partition 2 is located above the bus capacitor.

[0011] In a preferred embodiment, AC switch component 2 is disposed at the bottom of AC switch component 1, and AC switch component 1 and AC switch component 2 are disposed vertically corresponding to each other. DC switch component 2 is disposed at the bottom of DC switch component 1, and DC switch component 1 and DC switch component 2 are disposed vertically corresponding to each other.

[0012] The beneficial effects of this utility model are as follows:

[0013] This invention improves the heat dissipation effect inside the installation room while increasing the space utilization rate, resulting in a significant increase in product power density. Compared with similar products in the industry, its small size reduces transportation costs and installation space requirements.

[0014] This utility model has the advantages of compact structure, convenient maintenance, good heat dissipation, high protection level, high power density, and high functional integration. Attached Figure Description

[0015] Figure 1 This is a side view of the installation chamber of this utility model.

[0016] Figure 2 This is a front view of the installation chamber of this utility model.

[0017] Figure 3 This is a schematic diagram of the airflow direction on another side of the installation room of this utility model.

[0018] Figure 4 This is a schematic diagram of another layout of the internal structure of the installation room of this utility model.

[0019] Figure 5 This utility model Figure 4 A schematic diagram of the front structure.

[0020] Figure 6 This utility model Figure 4 A schematic diagram of the airflow direction on the other side of the interior.

[0021] The attached diagram is labeled as follows: 1. Cabinet; 2. Installation room; 21. Fan 1; 22. Partition 1; 23. Partition 2; 3. Air guide cover; 4. Magnetic components; 41. Heat exchanger; 42. Fan 2; 5. Power module; 51. Bus capacitor; 6. AC switch assembly 1; 61. AC switch assembly 2; 7. DC switch assembly 1; 71. DC switch assembly 2. Detailed Implementation

[0022] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0023] Refer to the instruction manual appendix Figures 1 to 6 An inverter includes a cabinet 1, an installation chamber 2 inside the cabinet 1, a fan shroud 3 fixedly installed on the back of the cabinet 1, a fan 21 detachably installed at the top of the installation chamber 2, a magnetic component 4 detachably installed at the bottom of the installation chamber 2, a heat exchanger 41 installed on top of the magnetic component 4, a fan 42 installed on top of the heat exchanger 41, a power module 5 between the magnetic component 4 and the fan 21, and the power module 5 is detachably installed in the middle of the installation chamber 2, a bus capacitor 51 is fixedly installed on the back of the power module 5, an AC switch assembly 6 is installed on the front of the magnetic component 4, and a DC switch assembly 7 is installed on one side of the AC switch assembly 6.

[0024] Furthermore, the magnetic component 4 and the bus capacitor 51 are arranged vertically in a corresponding manner, and the power module 5 and the AC switch assembly 6 are arranged vertically in a corresponding manner.

[0025] Furthermore, the bottom of the air guide shroud 3 is provided with an air inlet, and the top of the air guide shroud 3 is provided with an air outlet, and the air outlet is provided in correspondence with the installation chamber 2 and the power module 5.

[0026] Furthermore, a partition 22 is provided between the fan 21 and the power module 5, and the partition 22 is fixedly and detachably installed inside the installation chamber 2. A partition 23 is provided on one side of the power module 5, and the partition 23 is located above the bus capacitor 51.

[0027] Furthermore, AC switch assembly 6 is provided at the bottom of AC switch assembly 6, and AC switch assembly 6 and AC switch assembly 6 are arranged vertically in correspondence. DC switch assembly 7 is provided at the bottom of DC switch assembly 7, and DC switch assembly 7 and DC switch assembly 7 are arranged vertically in correspondence.

[0028] It should be noted that the parts of the installation chamber 2 where components are installed use internal circulating air cooling, while the parts where no components are installed use external circulating air cooling. The internal structural layout of the installation chamber 2 is as follows: power module 5 is placed slightly above the front of the installation chamber 2; bus capacitor 51 is placed behind power module 5; AC switch assembly 6 is placed below and to the right of power module 5; DC switch assembly 7 is placed below and to the left of power module 5; and magnetic component 4 is placed directly below bus capacitor 51 and behind AC switch assembly 6 and DC switch assembly 7. The power flow 1 is: AC input – AC switch assembly 6 – magnetic component 4 – power module 5 – bus capacitor 51 – DC switch assembly 7 – DC output; the power flow 2 is: DC input – DC switch assembly 7 – bus capacitor 51 – power module 5 – magnetic component 4 – AC switch assembly 6 – AC output. Therefore, the positions of the DC input (output) and AC output (input) terminals can be interchanged by adjusting the positions of the components. Optionally, another layout can be achieved by adding AC switch assembly 2 61 and DC switch assembly 2 71. In this layout, the power module 5 is placed slightly above and in front of the mounting chamber 2, the bus capacitor 51 is placed behind the power module 5, AC switch assembly 1 6 and DC switch assembly 1 7 are placed below the power module 5, one on the left and one on the right, AC switch assembly 2 61 and DC switch assembly 2 71 are placed below AC switch assembly 1 6 and DC switch assembly 1 7 respectively, and the magnetic component 4 is placed directly below the bus capacitor 51 and behind AC switch assembly 1 6, AC switch assembly 2 61, DC switch assembly 1 7 and DC switch assembly 2 71. The added AC switch assembly 2 61 and DC switch assembly 2 71 can also participate in the internal circulation heat dissipation. AC switch assembly 1 6 and DC switch assembly 1 7 are compatible with installations from different manufacturers and can be composed of 1 to N pcs of AC switches. The empty spaces on both sides of AC switch assembly 1 6 and DC switch assembly 1 7 can be used to install relevant control and protection devices.

[0029] In this embodiment, the specific implementation scenario is as follows: the airflow direction inside the installation chamber 2 is shown in the attached diagram. Figure 4 and attached Figure 6As indicated by the arrow, the installation chamber 2 includes two circulating heat dissipation systems: an external circulation system and an internal circulation system. The external circulation system works as follows: cold air flows into the interior of the air guide shroud 3 through the air inlet. The heat generated by the magnetic components 4 is transferred to the cavity of the air guide shroud 3 through the heat exchanger 41. The cold air flowing in through the air inlet carries away the heat from the heat exchanger 41 and enters the heat exchange channel of the power module 5 along the air duct cavity inside the air guide shroud 3 (the route indicated by the dotted arrow). Simultaneously, some of the heat generated by the components of the power module 5 also enters the heat exchange channel. Fan 21 is placed on the partition 22. When fan 21 is in exhaust mode, the heat accumulated in the heat exchange channel is quickly absorbed and dissipated. The system circulates with external air to exchange heat. The internal circulation cooling system consists of a heat exchanger 41 above the magnetic component 4, and a second fan 42 above the heat exchanger 41. The fan 42 has an air duct cavity around its perimeter. After the heat from the magnetic component 4 is carried away by the heat exchanger 41, the air above it is cooled and drawn upwards by the fan 42. This cooled air passes sequentially over the high-temperature components on the surface of the bus capacitor 51 and the high-temperature components of the power module 5. Due to the negative pressure below the fan 42, the air inside the mounting chamber 2 is circulated, thus carrying away the heat from the bus capacitor 51 and the power module 5, achieving internal circulation cooling. The system has two circulation cooling systems that effectively dissipate heat from the internal components through the air ducts arranged within the mounting chamber 2.

[0030] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. An inverter, characterized by: Including cabinet (1), the inside of the cabinet (1) is equipped with installation room (2), the back of the cabinet (1) is fixedly installed with wind scoop (3), the inside top end of the installation room (2) is detachably installed with fan one (21), the inside bottom end of the installation room (2) is detachably installed with magnetic component (4), the top of the magnetic component (4) is provided with heat exchanger (41), the top of the heat exchanger (41) is provided with fan two (42), the magnetic component (4) and fan one (21) are equipped with power module (5), and the power module (5) is detachably installed in the middle part of installation room (2), the back of the power module (5) is fixedly installed with bus capacitor (51), the front of the magnetic component (4) is provided with alternating current switch assembly one (6), one side of the alternating current switch assembly one (6) is provided with direct current switch assembly one (7).

2. An inverter according to claim 1, characterized in that: The magnetic component (4) and the bus capacitor (51) are correspondingly arranged up and down, and the power module (5) and the alternating current switch assembly one (6) are correspondingly arranged up and down.

3. An inverter according to claim 2, characterized in that: The bottom end of the wind scoop (3) is provided with an air inlet, and the top end of the wind scoop (3) is provided with an air outlet, and the air outlet is correspondingly arranged with the installation room (2) and the power module (5).

4. An inverter as claimed in claim 3, characterized in that: The fan one (21) and the power module (5) are provided with a partition one (22), and the partition one (22) is fixedly and detachably installed in the inside of the installation room (2), one side of the power module (5) is provided with a partition two (23), and the partition two (23) is located above the bus capacitor (51).

5. An inverter as claimed in claim 4, characterized in that: The bottom of the alternating current switch assembly one (6) is provided with alternating current switch assembly two (61), and the alternating current switch assembly one (6) and the alternating current switch assembly two (61) are correspondingly arranged up and down.

6. An inverter according to claim 4, characterized in that: The bottom of the direct current switch assembly one (7) is provided with direct current switch assembly two (71), and the direct current switch assembly one (7) and the direct current switch assembly two (71) are correspondingly arranged up and down.

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