CN209844822U - Water-wind heat dissipation full-closed power cabinet - Google Patents

Abstract

The utility model relates to a water wind heat dissipation totally-enclosed power cabinet, including the cabinet body, wind chamber, water wind heat exchanger, centrifugal fan and a plurality of IGBT power module, the internal lower part of cabinet is equipped with main mounting panel, IGBT power module installs side by side in proper order on the main mounting panel, IGBT power module lateral wall encircles and installs airtight shell, airtight shell top intercommunication connection wind chamber, wind chamber top intercommunication water wind heat exchanger, water wind heat exchanger top intercommunication centrifugal fan, centrifugal fan air-out direction is equipped with the guide plate, the guide plate is right centrifugal fan's air-out is dredged, makes the air-out to cabinet body lower part flows, and the air-out through centrifugal fan attract by airtight shell's the ascending flow in bottom is right IGBT power module carries out the heat transfer. The utility model discloses can improve the operational reliability and the life-span of electric capacity, resistance and copper bar.

Description

Water-wind heat dissipation full-closed power cabinet

Technical Field

The utility model belongs to the technical field of the rack ventilation cooling, especially, relate to a totally-enclosed power cabinet of water wind heat dissipation.

Background

Along with the rapid development of wind energy, the wind power converter is required to be smaller in volume and higher in power density, the converter is applied to a sea environment or a high-humidity environment, more loss needs to be taken away under the unit volume, the cabinet is made into a fully-closed cabinet with a higher cabinet body protection grade, and for the converter cabinet with the power grade, the current better heat dissipation scheme is water-cooling heat dissipation. However, water-cooling heat dissipation can only take away the heat of the IGBT well, and for devices such as capacitors, resistors and copper bars, heat exchange is completed through a water-air heat exchanger and the devices in the cabinet, and then water is transferred to the devices, so that heat dissipation can be realized, and because of the secondary heat exchange process of the devices for air and air-water heat exchange, the heat dissipation effect of the devices is 5-10 ℃ lower than that of the air-cooled converter.

Therefore, based on the problems, the power cabinet capable of improving the operational reliability and the service life of the capacitor, the resistor and the copper bar and achieving efficient water-wind heat dissipation of the fully-closed cabinet is provided, and the power cabinet has important practical significance.

Disclosure of Invention

An object of the utility model is to overcome prior art not enough, provide one kind and can improve the operational reliability and the life-span of electric capacity, resistance and copper bar, can realize the radiating power cabinet of the high-efficient water wind of totally-enclosed rack.

The utility model provides a its technical problem take following technical scheme to realize:

the utility model provides a water wind heat dissipation totally enclosed power cabinet, includes the cabinet body, wind chamber, water wind heat exchanger, centrifugal fan and a plurality of IGBT power module, the internal lower part of cabinet is equipped with main mounting panel, IGBT power module installs side by side in proper order on the main mounting panel, IGBT power module lateral wall encircles and installs airtight shell, airtight shell top intercommunication connection wind chamber, wind chamber top intercommunication water wind heat exchanger, water wind heat exchanger top intercommunication centrifugal fan, centrifugal fan air-out direction is equipped with the guide plate, the guide plate is right centrifugal fan's air-out is dredged, makes the air-out orientation cabinet body lower part flows, and the air-out through centrifugal fan attract by the bottom of airtight shell rises to flow through IGBT power module is right IGBT power module carries out the heat transfer.

Furthermore, the air cavity is of a closed cavity structure.

Furthermore, guide plates are arranged between the centrifugal fans at the tops of the IGBT power modules and are adjacent to each other, and the guide plates are installed on the top wall of the cabinet body.

Furthermore, the cross section of the guide plate is in an inverted triangle shape.

Furthermore, the bottom of the closed shell is of an air-permeable structure.

The utility model has the advantages that:

the utility model discloses an installation a sealed wind chamber above the IGBT power module, wind chamber top again with water wind heat exchanger inlet end good sealing connection, water wind heat exchanger top installation a centrifugal fan, through centrifugal fan's the effect of induced drafting, form the negative pressure in the wind chamber, thereby inhale hot-blast to IGBT power module, this part hot-blast is through giving big stromatolite generating line heat dissipation again, carry out water wind heat exchanger through the wind chamber and accomplish the heat exchange with water, become the cooling gas flow that the temperature is low, then blow off through centrifugal fan, the cooling gas flow passes through the effect of guide plate again, enter IGBT power module inside, cool off electric capacity, resistance, copper bar in the power module, accomplish a heat dissipation cycle, the utility model discloses good, compact structure, effectively utilize the physical phenomenon that hot-air rises, the cold air sinks, and realize the heat dissipation circulation with the help of fan and guide plate, the heat dissipation device is suitable for heat dissipation of a cabinet body provided with the IGBT power module.

Drawings

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus are not intended to limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.

Fig. 1 is a schematic structural view of a water-air heat dissipation fully-enclosed power cabinet provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an IGBT power module in a water-wind heat dissipation fully-enclosed power cabinet provided by an embodiment of the present invention;

in the figure:

the device comprises a fully-closed cabinet body-12, a water-air heat exchanger-2, a centrifugal fan-1, an IGBT-6, a thin film capacitor-10, a large laminated bus-11, an air cavity-3, a main mounting plate-13, an alternating current copper bar-8, a discharge resistor-7, a water cooling plate-5, a closed shell-9, a guide plate-14 and an IGBT power module-4.

Detailed Description

First, it should be noted that the specific structures, features, advantages, etc. of the present invention will be described in detail below by way of example, but all the descriptions are only for illustrative purpose and should not be construed as forming any limitation to the present invention. Furthermore, any single feature described or implicit in any embodiment or any single feature shown or implicit in any drawing may still be combined or subtracted between any of the features (or equivalents thereof) to obtain still further embodiments of the invention that may not be directly mentioned herein. In addition, for the sake of simplicity, the same or similar features may be indicated in only one place in the same drawing.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The present invention will be described in detail with reference to fig. 1 to 2.

Example 1

Fig. 1 is a schematic structural view of a water-air heat dissipation fully-enclosed power cabinet provided in an embodiment of the present invention; fig. 2 is a schematic structural diagram of an IGBT power module in a water-wind heat dissipation fully-enclosed power cabinet provided by an embodiment of the present invention; as shown in fig. 1-2, the water-air heat dissipation fully-enclosed power cabinet provided in this embodiment includes a cabinet body 12, an air cavity 3, a water-air heat exchanger 2, a centrifugal fan 1, and a plurality of IGBT power modules 4, wherein a main mounting plate 13 is disposed at a lower portion of the cabinet body 12, the IGBT power modules 4 are sequentially mounted on the main mounting plate 13 side by side, an enclosed casing 9 is mounted around a side wall of the IGBT power module 4, it should be noted that the IGBT power module 4 is mounted and fixed with the enclosed casing 9 by using conventional means such as bolts, rivets, welding and the like mature in the prior art, the top of the enclosed casing 9 is connected with the air cavity 3, the air cavity 3 is an enclosed cavity structure, the top of the air cavity 3 is communicated with the water-air heat exchanger 2, the top of the water-air heat exchanger 2 is communicated with the centrifugal fan 1, a guide plate 14 is disposed in an air outlet direction of the centrifugal fan 1, the guide, and the outlet air flows to the lower part of the cabinet body 12, is sucked by the centrifugal fan 1, rises from the bottom of the closed shell 9, flows through the IGBT power module 4, and exchanges heat with the IGBT power module 4.

Furthermore, the present invention can also be considered that a guide plate 14 is disposed between the centrifugal fans 1 at the tops of the adjacent IGBT power modules 4, so that the guide plate 14 not only can dredge the outlet air of the centrifugal fans 1, but also can avoid the mutual interference of the outlet air between the centrifugal fans 1 at the tops of the adjacent IGBT power modules 4, which can not realize the circulation of the outlet air well; for ease of installation, it is contemplated that the baffle 14 is mounted to the top wall of the cabinet 12; in order to better channel the outlet air, the cross section of the air deflector 14 may be an inverted triangle.

It should be noted that the bottom of the sealed housing 9 is of an air-permeable structure, and specifically, it may be considered that the bottom of the sealed housing 9 has no baffle, or the bottom of the sealed housing 9 has a baffle, but the baffle is of a hollow structure, so long as the bottom of the sealed housing 9 is of an air-permeable structure, and the bottom of the sealed housing is not limited to a specific structural shape.

It should be noted that the water-wind heat exchanger 2 is a common water-wind heat exchange product in the market, such as a JX051-002 product of a tin-free heat exchanger factory.

It should be noted that the IGBT power module 4 may be considered as any existing IGBT power module; in this embodiment, the IGBT power module 4 is an existing IGBT power module, and specifically refer to patent CN 201721073695.1; specifically, as shown in fig. 2, the IGBT power module 4 includes an IGBT 6, an ac copper bar 8, a thin-film capacitor 10, a water-cooling plate 5, and a discharge resistor 7, wherein the IGBT 6 dissipates heat through the water-cooling plate 5, and the ac copper bar 8, the thin-film capacitor 10, the discharge resistor 7, and other devices dissipate heat through the water-air heat exchanger 2 and the centrifugal fan 1 in the cabinet; it should be noted that a plurality of the IGBT power modules 4 are electrically connected by the upper large laminated bus bar 11, and the large laminated bus bar 11 is installed in the air cavity 3.

It should be noted that, the fixing and connecting method of the present invention adopts conventional means such as bolts, rivets, welding, etc. which are mature in the prior art, and is not described herein again, but due to the above reasons, the repeated reproduction of the technicians in the field will not be affected.

As an example, in the present invention, a sealed air cavity is installed above the IGBT power module, the air cavity is connected with the air inlet end of the water-air heat exchanger in a good sealing manner, a centrifugal fan is installed above the water-air heat exchanger, when the power cabinet starts to work, a negative pressure is formed in the air cavity by the suction effect of the centrifugal fan, so as to suck hot air into the IGBT power module in the sealed enclosure, and after this part of hot air is cooled by the large laminated bus bar, the water-air heat exchanger and water complete heat exchange through the air cavity, and become a cooling air flow with low temperature, and then blow out through the centrifugal fan, and the cooling air flow enters the sealed enclosure through the effect of the guide plate, as shown in fig. 1, the arrow indicates an air flow channel, and cools the capacitor, resistor, copper bar and other structures of the IGBT power module, thereby completing a heat dissipation cycle The structure is compact, the physical phenomena of hot air rising and cold air sinking are effectively utilized, and heat dissipation circulation is realized by means of the fan and the guide plate.

To sum up, the utility model discloses can provide one kind and can improve the operational reliability and the life-span of electric capacity, resistance and copper bar, can realize the radiating power cabinet of the high-efficient water wind of totally enclosed rack.

The above embodiments are described in detail, but the above description is only for the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims (5)

1. The utility model provides a totally-enclosed power cabinet of water wind heat dissipation which characterized in that: including the cabinet body, wind chamber, water wind heat exchanger, centrifugal fan and a plurality of IGBT power module, the internal lower part of cabinet is equipped with main mounting panel, IGBT power module installs side by side in proper order on the main mounting panel, IGBT power module lateral wall encircles and installs airtight shell, airtight shell top intercommunication connects the wind chamber, wind chamber top intercommunication water wind heat exchanger, water wind heat exchanger top intercommunication centrifugal fan, centrifugal fan air-out direction is equipped with the guide plate, the guide plate is right centrifugal fan's air-out is dredged, makes the air-out to the flow of cabinet body lower part, and the air-out through centrifugal fan attract by the bottom of airtight shell rises to flow through IGBT power module is right IGBT power module carries out the heat transfer.

2. The water-wind heat dissipation fully-enclosed power cabinet according to claim 1, characterized in that: the air cavity is of a closed cavity structure.

3. The water-wind heat dissipation fully-enclosed power cabinet according to claim 1, characterized in that: guide plates are arranged between the centrifugal fans at the tops of the IGBT power modules which are adjacent to each other, and the guide plates are installed on the top wall of the cabinet body.

4. The water-wind heat dissipation fully-enclosed power cabinet according to claim 3, characterized in that: the cross section of the guide plate is in an inverted triangle shape.

5. The water-wind heat dissipation fully-enclosed power cabinet according to claim 1, characterized in that: the bottom of the closed shell is of an air-permeable structure.