CN217406910U

CN217406910U - Inverter cabinet and inverter

Info

Publication number: CN217406910U
Application number: CN202220722950.5U
Authority: CN
Inventors: 高祥; 郑浩; 王晓虎; 张国锋; 朱其姚; 张献伟; 金成山
Original assignee: Sungrow Power Supply Co Ltd
Current assignee: Sungrow Power Supply Co Ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-09-09
Anticipated expiration: 2032-03-30

Abstract

The utility model discloses an inverter cabinet and an inverter, wherein the inverter cabinet comprises a cabinet body and a first main fan, a first main air duct and a first branch air duct are arranged in the cabinet body, the first main air duct is provided with a first main air inlet and a first main air outlet, the first branch air duct is communicated with the first main air duct, and the first branch air duct is provided with a first branch air outlet; the first main fan is arranged at the first main air inlet and used for driving outside air to enter the first main air duct. The utility model discloses technical scheme can improve the radiating efficiency of dc-to-ac converter rack.

Description

Inverter cabinet and inverter

Technical Field

The utility model relates to an inverter field, in particular to dc-to-ac converter rack and dc-to-ac converter.

Background

Photovoltaic inverters are key electrical equipment for solar power conversion. With the development of the photovoltaic power generation industry, the centralized photovoltaic inverter is installed and applied on a large scale due to the fact that the operation of the centralized photovoltaic inverter is reliable and the economic performance is good.

Meanwhile, along with the fact that the degree of integration inside the inverter cabinet is higher and higher, the power density of the whole inverter is gradually increased, the problem of a centralized inverter whole system is gradually highlighted, equipment can operate in a frequency reduction mode due to system abnormality, equipment can be stopped seriously, and the service life of the equipment is shortened.

Therefore, improvement of the heat dissipation structure of the inverter is required.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main objective provides an inverter cabinet and dc-to-ac converter aims at improving the radiating efficiency of inverter cabinet.

In order to achieve the above object, the present invention provides an inverter cabinet, the inverter cabinet including:

the air conditioner comprises a cabinet body, wherein a first main air duct and a first branch air duct are arranged in the cabinet body, the first main air duct is provided with a first main air inlet and a first main air outlet, the first branch air duct is communicated with the first main air duct, and the first branch air duct is provided with a first branch air outlet;

the first main fan is arranged at the first main air inlet and used for driving outside air to enter the first main air duct.

Optionally, the inverter cabinet further comprises:

first branch road fan, first branch road fan set up in first main wind channel and/or first branch road wind channel, the wind pressure of first branch road fan is less than the wind pressure of first main fan for the drive the partial air in first main wind channel gets into first branch road wind channel.

Optionally, a second main air duct is further arranged in the cabinet body, and the second main air duct is provided with a second main air inlet and a second main air outlet;

the inverter cabinet further comprises a second main fan, and the second main fan is arranged at the second main air inlet and used for driving outside air to enter the second main air duct.

Optionally, the first main air inlet and the second main air inlet are located on the same surface of the cabinet body, and a partition is arranged between the first main air inlet and the second main air inlet on the outer side of the cabinet body.

Optionally, the first main air duct includes a module cavity and a reactor cavity, and the first main air inlet, the module cavity, the reactor cavity, and the first main air outlet are sequentially communicated.

Optionally, the first branch air duct includes a direct current distribution input cavity and an alternating current distribution output cavity, the module cavity the direct current distribution input cavity the alternating current distribution output cavity and the first branch air outlet communicate in sequence.

Optionally, the second main air duct includes a capacitor pool cavity and the ac distribution output cavity, and the second main air inlet, the capacitor pool cavity, the ac distribution output cavity, and the second main air outlet are sequentially communicated;

and the second main air outlet is superposed with the first branch air outlet.

Optionally, a second branch air duct is further arranged in the cabinet body, and a second branch air outlet is arranged in the second branch air duct;

the second branch air duct comprises an inverter output cavity, and the alternating current distribution output cavity, the inverter output cavity and the second branch air outlet are communicated in sequence.

Optionally, the first main air inlet is located on the top surface of the cabinet body, and the first main air outlet is located on the side surface of the cabinet body; and/or the presence of a gas in the gas,

the first branch air outlet is positioned on the bottom surface of the cabinet body; and/or the presence of a gas in the atmosphere,

the second main air inlet is located on the top surface of the cabinet body, and the second main air outlet is located on the bottom surface of the cabinet body.

Optionally, two of the first main air duct, the first branch air duct and the second main air duct are respectively provided, and one of the second branch air duct is provided;

the two first main air ducts, the two first branch air ducts and the two second main air ducts are symmetrically arranged based on the second branch air ducts respectively.

Optionally, the module cavities of the two first main air ducts are communicated with each other, and a blocking member is arranged between the first main air inlets of the two first main air ducts; and/or the presence of a gas in the gas,

the reactor cavities of the two first main air channels are isolated from each other.

In order to achieve the above object, the present invention further provides an inverter, the inverter includes an inverter unit and an inverter cabinet as described above, wherein the inverter unit is at least partially disposed in the first main air duct and the first branch air duct.

The utility model discloses among the technical scheme, through the first main fan that is located first main air intake, can drive external cold air and get into first main wind channel, because first branch road wind channel and first main wind channel intercommunication for when part cold air flows from first main air outlet, part cold air gets into first branch road wind channel and flows from first branch road air outlet, thereby can realize dispelling the heat to the inverter unit in the dc-to-ac converter rack. According to the inverter cabinet, the first main air channel is arranged, the first branch air channel is led out, the problem that air intake ends of two parallel independent heat dissipation air channels are adopted to get air and interfere with each other can be avoided, good ventilation and heat dissipation conditions can be provided for the inverter unit, and the heat dissipation efficiency of the whole inverter is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of an inverter cabinet of the present invention;

fig. 2 is a schematic structural view of the inverter cabinet of fig. 1 from another perspective;

fig. 3 is a schematic structural diagram of another view angle of the inverter cabinet in fig. 1.

The reference numbers indicate:

reference numerals	Name (R)	Reference numerals	Name(s)
				A0	Cabinet body	F1	First main blower
I1	Side air intake area of module	F2	Second main blower
				I2	AC output side air intake area	F3	First branch fan
W1	First heat dissipation air duct	01	The first main air outlet
				W11	First main air duct	02	First branch air outlet
W12	First branch air duct	03	Second branch air outlet
				W2	Second heat dissipation air duct	C1	Module cavity
W21	Second main air duct	C2	Reactor cavity
				W22	Second branch air duct	C3	DC distribution input cavity
P1	V-shaped partition board	C4	AC distribution output cavity
				P2	Reactor baffle	C5	Capacitor pool cavity
		C6	Inverter output cavity

The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides an inverter cabinet.

In the embodiment of the present invention, as shown in fig. 1, the inverter cabinet includes a cabinet body a0, a first main blower F1, a first main air duct W11 and a first branch air duct W12 are provided in the cabinet body a0, the first main air duct W11 is provided with a first main air inlet and a first main air outlet 01, the first branch air duct W12 is communicated with the first main air duct W11, and the first branch air duct W12 is provided with a first branch air outlet 02; the first main blower F1 is disposed at the first main air inlet for driving the external air into the first main air duct W11.

In this embodiment, the inverter cabinet is used for installing the contravariant unit to protect the contravariant unit. The interior space of the inverter cabinet a0 is partitioned by partitions or the like to form a plurality of chambers, and the respective components of the inverter unit are mounted thereon. Wherein, part of the chambers are communicated with each other or with the outside, thereby forming a first heat dissipation air duct W1, and the first heat dissipation air duct W1 includes a first main air duct W11 and a first branch air duct W12.

When the inversion unit needs to be cooled, the first main fan F1 is turned on. The first main fan F1 may specifically be a centrifugal fan. When the first main fan F1 works, the first main fan F1 drives outside air to enter the first heat dissipation air duct W1, so as to provide cooling air input for the whole first heat dissipation air duct W1, and the cold air passes through the first main air duct W11 and flows out of the first main air outlet 01, thereby taking away heat of the corresponding component of the inverter unit; meanwhile, as the first branch air duct W12 is communicated with the first main air duct W11, part of cold air in the first main air duct W11 enters the first branch air duct W12 and flows out of the first branch air outlet 02, and heat of a corresponding component of the inverter unit is taken away. Therefore, the first main duct W11 and the first branch duct W12 may dissipate heat from different parts of the inverter unit.

Wherein, compare in setting up two independent heat dissipation wind channels side by side and dispel the heat to the inverter unit, this technical scheme is through setting up first main wind channel W11 and drawing forth first branch road wind channel W12, can avoid two air inlet ends in independent heat dissipation wind channel side by side to get the problem that wind was disturbed each other, can provide good ventilation cooling condition for the inverter unit, improves complete machine radiating efficiency.

In an embodiment, the inverter cabinet further includes a first branch blower F3, the first branch blower F3 is disposed in the first main air duct W11 and/or the first branch air duct W12, and a wind pressure of the first branch blower F3 is smaller than a wind pressure of the first main blower F1, so as to drive a portion of air in the first main air duct W11 into the first branch air duct W12.

Specifically, the first branch fan F3 may be an axial fan, and the first main fan F1 is a high-power fan, and the first branch fan F3 is a low-power fan. Thus, when the first main fan F1 drives the external cold air to enter the first main air duct W11, most of the cold air flows through the first main air duct W11 and flows out of the first main air outlet 01, and a small part of the cold air flows through the first branch air duct W12 and flows out of the first branch air outlet 02 under the driving of the first branch fan F3, so that effective heat dissipation of different parts of the inverter unit is realized. Therefore, in the present embodiment, by providing the first branch fan F3, the heat dissipation capability of the first branch duct W12 can be enhanced, thereby improving the heat dissipation efficiency of the inverter cabinet.

In an embodiment, a second main air duct W21 is further disposed in the cabinet a0, and the second main air duct W21 is provided with a second main air inlet and a second main air outlet; the inverter cabinet further includes a second main blower F2, and the second main blower F2 is disposed at the second main air inlet and is used for driving outside air to enter the second main air duct W21.

In this embodiment, part of the cavities of the inverter cabinet a0 are communicated or communicated with the outside, so as to form a second heat dissipation channel, which includes a second main air duct W21 and a second branch air duct W22. When the inverter unit needs to be cooled, the second main fan F2 may be turned on simultaneously, in addition to the first main fan F1 and the first branch fan F3. The second main fan F2 may specifically be a centrifugal fan. When the second main fan F2 works, the outside air is driven to enter the second heat dissipation air duct W2, cooling air input is provided for the whole second heat dissipation air duct W2, and the cold air flows out from the second main air outlet through the second main air duct W21, so that heat of corresponding parts of the inverter unit is taken away. In this embodiment, by adding the second heat dissipation air duct W2, the heat dissipation capability of the inverter cabinet can be enhanced, and the heat dissipation efficiency of the inverter cabinet can be improved.

In one embodiment, the first main air inlet and the second main air inlet are located on the same surface of the cabinet a0, and a partition is disposed outside the cabinet a0 between the first main air inlet and the second main air inlet.

Specifically, the first main air inlet is located at the top surface of the cabinet a0, and the first main air outlet 01 is located at the side surface of the cabinet a 0; the first branch air outlet 02 is positioned on the bottom surface of the cabinet body A0; the second main air inlet is positioned on the top surface of the cabinet A0, and the second main air outlet is positioned on the bottom surface of the cabinet A0. Therefore, in this embodiment, the overall heat dissipation of the inverter cabinet is managed in a partitioned manner, and is divided into the first heat dissipation air duct W1 and the second heat dissipation air duct W2, which all use top air inlet and bottom air outlet, a partition (such as a partition) is arranged at the top of the cabinet body a0 to separate the top area into two independent air inlet areas, the module side air inlet area I1 and the ac output side air inlet area I2, so that the air inlet ends of the first heat dissipation air duct W1 and the second heat dissipation air duct W2 can be prevented from affecting each other, good ventilation and heat dissipation conditions can be provided for the inverter unit, and the overall heat dissipation efficiency is improved.

In an embodiment, the first main air duct W11 includes a module chamber C1 and a reactor chamber C2, and the first main air inlet, the module chamber C1, the reactor chamber C2 and the first main air outlet 01 are sequentially communicated.

Specifically, the module cavity C1 is used for installing a module of the inverter unit, and the reactor cavity C2 is used for installing a reactor of the inverter unit. When the inverter normally works, the air at the top of the cabinet flows into a module side air inlet area I1 through shutters at the top of the cabinet under the driving of a first main fan F1, and then the low-temperature air enters a module cavity C1 through the first main fan F1 to provide heat dissipation for the module in the cavity. In this space, under the influence of the first branch fan F3 on the side of the module chamber C1, the first heat dissipation air duct W1 splits the air flow into two paths and flows to the downstream space. Because the power of the first branch fan F3 is smaller than that of the first main fan F1, most of air in the module cavity C1 flows into the reactor cavity C2 under the driving of the first main fan F1, and finally high-temperature air in the first main air duct W11 leaves the inverter through the first main air outlet 01, so that the purpose of cooling the module and the reactor in the inverter unit is achieved.

In an embodiment, the first branch duct W12 includes a dc distribution input cavity C3 and an ac distribution output cavity C4, and the module cavity C1, the dc distribution input cavity C3, the ac distribution output cavity C4 and the first branch outlet 02 are sequentially communicated.

Specifically, the dc power distribution input cavity C3 is used for installing a dc input power distribution copper bar of the inverter unit, and the ac power distribution output cavity C4 is used for installing an ac output power distribution copper bar of the inverter unit. For the first branch air duct W12, under the action of the first branch fan F3, the collected air in the partial module cavity C1 enters the direct-current power distribution input cavity C3, then enters the alternating-current power distribution output cavity C4, converges at the tail end of the second heat dissipation air duct W2 (the second main air duct W21), and leaves the cabinet through the first branch air outlet 02, so that the heat dissipation of the direct-current input power distribution copper bar of the inverter unit is realized. Wherein, will be the first branch road fan F3 of direct current distribution input chamber C3 heat dissipation usefulness and place in module chamber C1 side, form first branch road wind channel W12, compare in placing first branch road fan F3 in direct current distribution input chamber C3 top module air inlet region, can avoid first branch road fan F3 to extract too much amount of wind and lead to first main fan F1 to carry the amount of wind not enough, cause module chamber C1 temperature rise abnormity.

In an embodiment, the second main air duct W21 includes a capacitor pool chamber C5 and an ac distribution output chamber C4, and the second main air inlet, the capacitor pool chamber C5, the ac distribution output chamber C4 and the second main air outlet are sequentially communicated; wherein the second main air outlet is coincident with the first branch air outlet 02.

Specifically, the capacitor cell C5 is used for mounting an ac/dc capacitor of the inverter unit. When the inverter normally works, the air at the top of the cabinet flows into an air inlet area I2 at the alternating current output side through a louver at the top of the cabinet under the driving of a second main fan F2, then the low-temperature air passes through the second main fan F2 to enter a capacitor cell cavity C5 to provide a heat dissipation condition for an alternating current capacitor and a direct current capacitor in the cavity, then the air enters an alternating current distribution output cavity C4 under the driving of a first branch fan F3, and is merged with the air from the direct current distribution cavity of a first branch air duct W12 in the space to provide heat dissipation for an alternating current distribution output copper bar, and then the air leaves the cabinet through a second main air outlet (a first branch air outlet 02).

In one embodiment, a second branch air duct W22 is further disposed in the cabinet a0, and the second branch air duct W22 is provided with a second branch air outlet 03; the second branch air duct W22 includes an inverter output cavity C6, an ac distribution output cavity C4, an inverter output cavity C6 and a second branch air outlet 03 which are sequentially communicated.

The second branch air duct W22 selects air introduced from the alternating current distribution output cavity C5, part of air in the second main air duct W21 is extracted to enter the inverter output cavity C6, heat dissipation conditions are provided for a connecting copper bar between the inverter and the transformer, and finally hot air is discharged to the surrounding environment through a second branch air outlet 03 of the inverter output cavity C6. The prototype verification shows that the requirement of heat dissipation of the copper bar in the output cavity C6 of the inverter can be met. The air duct layout can save the material cost required by independently arranging the air ducts in the inverter output cavity C6, and reduce the complexity of a heat dissipation system, so that the whole inverter has more use economy.

In one embodiment, there are two first main ducts W11, two first branch ducts W12 and two second main ducts W21, and one second branch duct W22; the two first main air flues W11, the two first branch air flues W12 and the two second main air flues W21 are respectively and symmetrically arranged based on the second branch air flue W22.

In the embodiment, the inverter adopts a mirror image structure layout to divide the whole inverter into two units, two ends are set as direct current distribution input, the middle is set as a module and alternating current distribution output, the structure layout of the whole inverter is compact, the space utilization rate is high, and the power density of the whole inverter can be improved.

In one embodiment, the module cavities C1 of the two first main air ducts W11 are communicated with each other, and a barrier is disposed between the first main air inlets of the two first main air ducts W11; and/or the reactor cavities C2 of the two first main air ducts W11 are isolated from each other.

In this embodiment, a blocking member is disposed at the top of the module cavity C1, and the blocking member may be a V-shaped partition plate P1: including the first swash plate towards first main fan F1 and the second swash plate towards second main fan F2, the open end that first swash plate and second swash plate are connected and are formed erects in module chamber C1 top, and the pointed end that first swash plate and second swash plate are connected and are formed is towards first main air outlet 01 one side. Further, the tip (lowest point) height of the V-shaped partition P1 may be set to be flush with the outlet height of the first main fan F1.

The V-shaped partition plate P1 can weaken mutual interference between air outlet end exhaust air flows of the two first main fans F1 (the centrifugal partition plate is used for air outlet all around), cold air can be guided towards the respective first main air outlet 01 direction along the two first main air channels W11, the heat dissipation capacity of the two parallel first main fans F1 is improved, the heat dissipation capacity of a downstream module is improved, and the cost of the radiator is reduced. Meanwhile, the two reactor cavities C2 are separated by the reactor partition plate P2, so that the first main air ducts W11 of the two inversion units of the whole machine are mutually independent, and heat dissipation is provided for modules and reactors in the two inversion units.

The utility model discloses still provide an inverter, this inverter include contravariant unit and inverter cabinet, and the concrete structure of this inverter cabinet refers to above-mentioned embodiment, because this inverter has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here. The inversion unit is at least partially disposed in the first main duct W11 and the first branch duct W12.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An inverter cabinet, comprising:

2. The inverter cabinet of claim 1, further comprising:

3. The inverter cabinet according to claim 1, wherein a second main air duct is further provided in the cabinet, and the second main air duct is provided with a second main air inlet and a second main air outlet;

4. The inverter cabinet as claimed in claim 3, wherein the first main air inlet and the second main air inlet are located at a same surface of the cabinet, and a partition is provided outside the cabinet between the first main air inlet and the second main air inlet.

5. The inverter cabinet according to claim 3, wherein the first main air duct includes a module chamber and a reactor chamber, and the first main air inlet, the module chamber, the reactor chamber, and the first main air outlet communicate in this order.

6. The inverter cabinet of claim 5, wherein the first branch duct comprises a DC distribution input cavity and an AC distribution output cavity, and the module cavity, the DC distribution input cavity, the AC distribution output cavity, and the first branch outlet are in communication in sequence.

7. The inverter cabinet of claim 6, wherein the second main air duct includes a capacitor pool cavity and the ac distribution output cavity, and the second main air inlet, the capacitor pool cavity, the ac distribution output cavity, and the second main air outlet are sequentially communicated;

and the second main air outlet is superposed with the first branch air outlet.

8. The inverter cabinet according to claim 7, wherein a second branch air duct is further provided in the cabinet body, and the second branch air duct is provided with a second branch air outlet;

9. The inverter cabinet according to any one of claims 3 to 8, wherein the first main air inlet is located at a top surface of the cabinet body, and the first main air outlet is located at a side surface of the cabinet body; and/or the presence of a gas in the gas,

the first branch air outlet is positioned on the bottom surface of the cabinet body; and/or the presence of a gas in the gas,

10. The inverter cabinet according to claim 8, wherein there are two each of the first main duct, the first branch duct, and the second main duct, and one each of the second branch duct;

11. The inverter cabinet according to claim 10, wherein the module cavities of the two first main air ducts are communicated with each other, and a barrier is disposed between the first main air inlets of the two first main air ducts; and/or the presence of a gas in the gas,

the reactor cavities of the two first main air ducts are mutually isolated.

12. An inverter, characterized in that the inverter comprises an inverter unit and the inverter cabinet of any one of claims 1 to 11, wherein the inverter unit is at least partially disposed in the first main duct and the first branch duct.