CN204335272U - an uninterruptible power supply - Google Patents

Abstract

The utility model relates to an uninterruptible power supply, which comprises a cabinet and a plurality of functional modules arranged in the cabinet. The top of the cabinet is provided with an air outlet and a ventilation device, and the bottom of the cabinet is provided with an air inlet. At the same time, at least one of the functional modules is provided with There is an independent cooling air duct. The solution of the utility model improves the heat dissipation performance of the product by setting an independent heat dissipation air duct in the functional module of the UPS product, so as to meet the heat dissipation demand of the high power density UPS product.

Description

an uninterruptible power supply

technical field

The utility model relates to the field of electrical technology, and more specifically relates to an uninterruptible power supply.

Background technique

Modular uninterruptible power supply (Uninterruptible Power System, UPS) system has been widely used because of its advantages of convenient maintenance and capacity expansion. As the power density of UPS systems increases, higher requirements are placed on the heat dissipation of UPS products. However, UPS products currently on the market can only dissipate heat through fans, and there is no reasonable air duct inside the product, resulting in low heat dissipation efficiency.

Utility model content

The technical problem to be solved by the utility model is to provide an uninterruptible power supply with better heat dissipation performance in view of the above-mentioned defects of the prior art.

The technical scheme that the utility model solves its technical problem adopts is:

Construct an uninterruptible power supply, including a cabinet and a plurality of functional modules arranged in the cabinet, the top of the cabinet is provided with an air outlet and a ventilation device, and the bottom of the cabinet is provided with an air inlet; wherein at least one The functional module is provided with an independent cooling air duct.

In the uninterruptible power supply described in the utility model, wherein, the functional module includes an inverter module, and a first cooling air duct is arranged in the inverter module; wherein,

The first cooling air duct includes a first lower air inlet located at the bottom of the inverter module and a first upper air outlet located at the top of the inverter module, and the first radiator in the inverter module is arranged on the above the first cooling air duct.

In the uninterruptible power supply described in the present utility model, wherein, the capacitor in the inverter module is arranged on the first cooling air duct, and the capacitor and the first heat sink in the inverter module are The other components are arranged in isolation from the first heat dissipation air duct.

In the uninterruptible power supply described in the utility model, wherein, the functional module includes a balanced circuit module, and a second cooling air duct is arranged in the balanced circuit module; wherein,

The second cooling air duct includes a second lower air inlet located at the bottom of the balanced circuit module and a second upper air outlet located at the top of the balanced circuit module, and the second heat sink in the balanced circuit module is arranged on the on the second cooling air duct.

In the uninterruptible power supply described in the present utility model, the inductor in the balanced circuit module is arranged on the second heat dissipation air duct, and the inductor in the balanced circuit module except the inductor and the second radiator Other components are arranged in isolation from the second heat dissipation air duct.

In the uninterruptible power supply described in the utility model, wherein, the functional module includes a rectification module, and a third cooling air duct is arranged in the rectification module; wherein,

The third heat dissipation air passage includes a third air inlet arranged at the bottom of the rectification module and a third air outlet located at the top of the rectification module, a fan is arranged at the third air inlet, and the third air outlet There is a third radiator.

In the uninterruptible power supply described in the present utility model, other devices in the rectification module except the third heat sink are arranged in isolation from the third heat dissipation air duct.

The uninterruptible power supply described in the utility model, wherein, the functional module includes an inverter module, a balance circuit module and a rectification module at the same time, and the rectification module, the balance circuit module and the inverter module follow a bottom-up sequentially arranged in the cabinet; wherein,

The rectifier circuit parallel inductor connected to the rectifier module is arranged on one side of the rectifier module, and the filter capacitor component and inverter filter inductor connected to the balanced circuit module are arranged on one side of the balanced circuit module.

In the uninterruptible power supply described in the utility model, a dust-proof net is arranged at the air inlet hole.

In the uninterruptible power supply described in the utility model, the ventilation device is a centrifugal fan.

The beneficial effect of the utility model is that: by setting an independent heat dissipation air duct in the functional module inside the UPS product, the heat dissipation performance of the product is improved, so as to meet the heat dissipation demand of the high power density UPS product.

Description of drawings

The utility model will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:

Fig. 1 is a schematic diagram of the overall structure of an uninterruptible power supply in a preferred embodiment of the present invention;

Fig. 2 is a structural schematic diagram of an inverter module in a preferred embodiment of the present invention;

Fig. 3 is a structural schematic diagram II of an inverter module in a preferred embodiment of the present invention;

Fig. 4 is a schematic structural diagram of a balanced circuit module in a preferred embodiment of the present invention;

Fig. 5 is a structural schematic diagram of a rectifier module in a preferred embodiment of the present invention;

Fig. 6 is a second structural schematic diagram of a rectification module in a preferred embodiment of the present invention.

Detailed ways

The uninterruptible power supply of the preferred embodiment of the utility model is shown in Figure 1, including a cabinet 10 and a plurality of functional modules arranged in the cabinet 10, the top of the cabinet 10 is provided with a ventilation device 13, and the bottom of the cabinet 10 is provided with an air inlet 11 ; Among them, at least one functional module is provided with an independent cooling air duct. Under the action of the ventilation device 13 on the top of the cabinet 10, the external cold air enters the inside of the cabinet 10 from the air inlet 11 at the bottom of the cabinet 10, and goes out from the air outlet 12 on the top of the cabinet 10, and runs through the entire inside of the cabinet 10 from bottom to top, forming a The total heat dissipation channel in the cabinet 10 takes away the heat generated by the equipment in the cabinet 10 during operation. An independent heat dissipation air duct is provided in the functional modules inside the cabinet 10, which can facilitate the airflow throughout the entire cabinet 10 to enter into a single functional module, so as to realize better heat dissipation of a single functional module and improve the overall heat dissipation performance of UPS products.

In the above embodiment, the ventilation device 13 is preferably a centrifugal fan, and the number of centrifugal fans can be set according to requirements, for example, two centrifugal fans are set on the top of the cabinet 10 . The centrifugal fan can realize air circulation in the cabinet 10 and take away the heat in the cabinet 10 .

In the above embodiments, the functional modules include but are not limited to the inverter module 20 , the balance circuit module 30 and the rectifier module 40 . In addition to the above-mentioned functional modules, there are other necessary devices provided in the cabinet 10, such as the filter capacitor assembly 60, the inverter output inductor 70, etc., which will not be described in detail here.

In a specific embodiment, the above-mentioned functional modules include an inverter module 20, and a first cooling air passage is arranged in the inverter module 20; The air outlet 21 and the first upper air outlet 22 located on the top of the inverter module 20, the first radiator 24 in the inverter module 20 is arranged on the first heat dissipation air duct. The use of the first heat sink 24 can absorb the heat generated by other components in the inverter module 20 during operation, and convert the heat into the first heat dissipation air duct. Driven by the ventilation device 13 at the top of the cabinet 10, the airflow entering the cabinet 10 enters the interior of the inverter module 20 from the first lower air inlet 21, and takes away the heat in the inverter module 20 after passing through the first radiator 24. The air flows out from the first upper air outlet 22 into the cabinet 10 , and finally flows out from the air outlet 12 on the top of the cabinet 10 .

Preferably, other components in the inverter module 20 except capacitors (not shown) and the first heat sink 24 are isolated from the first heat dissipation air duct, so as to reduce the impact of dust accumulated on the inverter module 20 during the ventilation process. The influence of other components in the UPS can improve the stability of UPS products and prolong the service life of products. Since the capacitor generates a large amount of heat during operation, it is placed separately on the first heat dissipation air duct for better heat dissipation; the operating temperature of other devices can be absorbed and transferred to the first heat dissipation air duct by the first heat sink.

In another specific embodiment, the above-mentioned functional modules include a balanced circuit module 30, and a second cooling air duct is arranged in the balanced circuit module 30; The air outlet (not shown) and the second upper air outlet 31 located on the top of the balanced circuit module 30, the second heat sink 33 in the balanced circuit module 30 is arranged on the second cooling air duct. The use of the second heat sink 33 can absorb the heat generated by other components in the balance circuit module 30 when they are in operation, and convert the heat into the second heat dissipation air duct. Driven by the ventilation device 13 on the top of the cabinet 10, the airflow entering the cabinet 10 enters the interior of the inverter module 20 from the second lower air inlet, and after passing through the second radiator 33, it takes away the heat in the balance circuit module 30, from The second upper air outlet 31 flows out into the cabinet 10 , and finally flows out from the air outlet 12 on the top of the cabinet 10 .

Preferably, other devices in the balanced circuit module 30 except the inductor and the second heat sink 33 are isolated from the second heat dissipation air duct, so as to reduce the influence of dust accumulated in the ventilation process on other devices in the balanced circuit module 30 , Improve the stability of UPS products and prolong the service life of products. Since the inductor generates a lot of heat during work, it is placed separately on the second heat dissipation air duct for better heat dissipation; the operating temperature of other devices can be absorbed by the second heat sink 33 and transferred to the second heat dissipation air duct. .

In another specific embodiment, the above-mentioned functional modules include a rectification module 40 (that is, an SCR module), and a third heat dissipation air passage is arranged in the rectification module 40; There are three air inlets 41 and a third air outlet 42 located on the top of the rectification module 40 . The third air inlet 41 is provided with a fan, and the third air outlet 42 is provided with a third radiator 44 . Since the rectifier module 40 is a high-power device, it generates a relatively high temperature during operation. Therefore, a separate fan 43 is provided inside the rectifier module 40, which can improve the heat dissipation efficiency inside the rectifier module 40, thereby improving the overall heat dissipation efficiency of the UPS product. The number of fans 43 can be set according to specific needs, for example, three fans can be set.

Preferably, other components in the rectification module 40 except the third heat sink 44 are isolated from the third heat dissipation air duct, so as to reduce the influence of dust accumulated in the ventilation process on other components in the rectification module 40, and improve the efficiency of UPS products. Stability and prolong the service life of the product.

In another specific embodiment, the functional modules include the inverter module 20, the balance circuit module 30 and the rectification module 40 at the same time, and the rectification module 40, the balance circuit module 30 and the inverter module 20 are arranged in the cabinet in order from bottom to top 10, wherein the inverter module 20 can also be divided into a left inverter module and a right inverter module, the rectifier circuit parallel inductor 50 connected to the rectifier module 40 is arranged on the side of the rectifier module 40, and the filter connected to the balance circuit module 30 The capacitor component 60 and the inverter filter inductor 70 are arranged on one side of the balance circuit module 30 . The cold air flows from the air inlet through the bottom rectifier module 40, the rectifier circuit parallel inductor 50, the middle inverter filter inductor 70, the balance circuit module 30 and the filter capacitor assembly 60, then the top left inverter module and right inverter module, and then It is drawn out by the top centrifugal fan to form a bottom-up air duct system. The components with large heat generation, such as the rectifier circuit parallel inductor 50, the filter capacitor assembly 60, and the inverter filter inductor 70, are independently arranged in the cabinet 10, which can increase its heat dissipation efficiency. The inverter module 20, the balance circuit module 30, the rectifier module 40 and the filter capacitor assembly mentioned above can all be installed in the cabinet 10 through guide rails, so as to facilitate installation and maintenance.

Preferably, a dust-proof net is provided at the air inlet 11 at the bottom of the cabinet 10 in the above embodiment to prevent external dust from entering the cabinet 10, reduce the impact of dust on the modules and components in the cabinet, and improve the stability of the UPS product. Extend product life.

To sum up, the utility model improves the heat dissipation performance of the product by setting an independent heat dissipation air duct in the functional module inside the UPS product, so as to meet the heat dissipation demand of the high power density UPS product.

It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should belong to the protection scope of the appended claims of the present utility model.

Claims (10)

1. An uninterruptible power supply, comprising a cabinet (10) and a plurality of functional modules arranged in the cabinet (10), the top of the cabinet (10) is provided with an air outlet (12) and a ventilation device (13) , the bottom of the cabinet (10) is provided with an air inlet (11); it is characterized in that at least one of the functional modules is provided with an independent cooling air duct. 2. The uninterruptible power supply according to claim 1, wherein the functional module comprises an inverter module (20), and a first cooling air duct is arranged in the inverter module (20); wherein, The first cooling air passage includes a first lower air inlet (21) located at the bottom of the inverter module (20) and a first upper air outlet (22) located at the top of the inverter module (20), the The first radiator (24) in the inverter module (20) is arranged on the first cooling air passage. 3. The uninterruptible power supply according to claim 2, characterized in that, the capacitor in the inverter module (20) is arranged on the first cooling air duct, and the inverter module (20) removes the Capacitors and other components other than the first heat sink (24) are arranged in isolation from the first heat dissipation air duct. 4. The uninterruptible power supply according to claim 1, characterized in that, the functional modules include a balanced circuit module (30), and a second cooling air duct is arranged in the balanced circuit module (30); wherein, The second cooling air duct includes a second lower air inlet located at the bottom of the balanced circuit module (30) and a second upper air outlet (31) located at the top of the balanced circuit module (30), and the balanced circuit module The second radiator (33) in (30) is arranged on the second heat dissipation air duct. 5. The uninterruptible power supply according to claim 4, characterized in that, the inductance in the balanced circuit module (30) is arranged on the second cooling air duct, and the balanced circuit module (30) except the The inductor and other components other than the second heat sink (33) are arranged in isolation from the second heat dissipation air channel. 6. The uninterruptible power supply according to claim 1, characterized in that, the functional modules include a rectification module (40), and a third cooling air duct is arranged in the rectification module (40); wherein, The third heat dissipation air passage includes a third air inlet (41) arranged at the bottom of the rectification module (40) and a third air outlet (42) at the top of the rectification module (40), the third air inlet A fan (43) is arranged at the air outlet (41), and a third radiator (44) is arranged at the third air outlet (42). 7. The uninterruptible power supply according to claim 6, characterized in that, other devices in the rectification module (40) except the third heat sink (44) are isolated from the third heat dissipation air duct set up. 8. The uninterruptible power supply according to claim 1, characterized in that, the functional modules simultaneously comprise an inverter module (20), a balance circuit module (30) and a rectification module (40), and the rectification module (40) , the balance circuit module (30) and the inverter module (20) are arranged in the cabinet (10) in order from bottom to top; wherein, The rectifier circuit parallel inductor (50) connected to the rectifier module (40) is arranged on one side of the rectifier module (40), and the filter capacitor assembly (60) connected to the balance circuit module (30) and the inverter filter The inductor (70) is arranged on one side of the balance circuit module (30). 9. The uninterruptible power supply according to claim 1, characterized in that a dust-proof net is arranged at the air inlet hole (11). 10. The uninterruptible power supply according to claim 1, characterized in that the ventilation device (13) is a centrifugal fan.