Heat dissipation device and electrical cabinet

Abstract

The utility model discloses a heat dissipation device and an electrical cabinet, the heat dissipation device is used for heat dissipation of a heating source in a cabinet body, the heat dissipation device comprises an outer cover, an air-liquid heat exchanger and a heat dissipation fan, the bottom and the upper part of the outer cover are respectively provided with an air inlet and an air outlet, and the air-liquid heat exchanger is arranged in the outer cover and is provided with a plurality of air channels; the cooling fan comprises a fan box body and a fan body, and the fan box body is arranged at the air inlet and provided with a ventilation opening in the first horizontal direction; the fan body is arranged in the fan box, the axis of the fan body extends in the first direction, and the fan body is used for driving air to flow from the ventilation opening to the air outlet through the air inlet and the air passing channel. The electrical cabinet adopts the heat dissipation device. When the heat dissipation device is used for heat dissipation in the cabinet body, the liquid leakage risk is small, the occupied space is small, and the heating source in the cabinet body runs more safely.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of heat dissipation, and particularly relates to a heat dissipation device and an electrical cabinet. BACKGROUND

[0002] In the MW photovoltaic inverter or energy storage converter and other electrical cabinets, there are many internal devices in the product, and the heat generation is large, the heat source has high requirements on the working environment, and the efficiency and reliability of heat exchange are important guarantees for the normal operation of the device, so the air-liquid heat exchanger is widely used. The air temperature is significantly reduced after passing through the air-liquid heat exchanger, and the cooled air is quickly distributed around the heat source, thereby achieving the effect of heat dissipation. Then the air temperature passing through the heat source continues to rise, and circulates through the air duct and re-passes through the air-liquid heat exchanger. However, the existing heat dissipation scheme directly places the heat source in the heat dissipation air duct where the air-liquid heat exchanger is located. Corrosion and leakage will occur during long-term operation, and the leakage liquid on the surface of the heat source will cause damage to the normal operation of the heat source and potential safety hazards. In addition, the existing scheme is mostly a single heat dissipation air duct for heat dissipation of a single heat source. This heat exchange mode has very low space utilization efficiency, resulting in a large volume of the electrical cabinet. SUMMARY

[0003] The utility model aims at overcoming the above-mentioned defects or problems in the background art, and provides a heat dissipation device and an electrical cabinet. The heat dissipation device of the present application has small leakage risk and small space occupation when dissipating heat in the cabinet body, and the heat source in the cabinet body runs more safely.

[0004] To achieve the above-mentioned purpose, the utility model and its related embodiments adopt the following technical solutions, but are not limited to the following solutions:

[0005] The first technical solution and its related embodiments relate to a heat dissipation device for dissipating heat for a heat source inside a cabinet, comprising an outer cover, an air-liquid heat exchanger, and a heat dissipation fan. The bottom and top of the outer cover are respectively provided with an air inlet and an air outlet. The air-liquid heat exchanger is placed in the outer cover and is provided with a plurality of air passages. The heat dissipation fan comprises a fan box and a fan body. The fan box is arranged at the air inlet and is provided with a ventilation opening in the horizontal first direction. The fan body is arranged in the fan box and the axis extends in the first direction. The fan body is used to drive the air to flow from the air inlet and the air passage to the air outlet through the ventilation opening.

[0006] The second technical solution is based on the first technical solution, which is a preferred embodiment of the first technical solution. The projection of the air inlet and the air-liquid heat exchanger on the horizontal plane is completely staggered.

[0007] The third technical solution is based on the second technical solution, and is a preferred embodiment of the second technical solution. The air-liquid heat exchanger divides the outer cover into an air inlet cavity communicated with the air inlet and an air outlet cavity communicated with the air outlet along the air passing direction of the air passing channel. The air inlet cavity is provided with the air inlet at the bottom, and the air outlet cavity is provided with the air outlet at the top, and the projection of the air outlet on the projection plane perpendicular to the air passing direction of the air passing channel is completely staggered with the projection of the air-liquid heat exchanger on the projection plane.

[0008] The fourth technical solution is based on the third technical solution, and is a preferred embodiment of the third technical solution. The air passing channel passes air along the horizontal direction, and the outer cover is further provided with a containing cavity adapted to contain the air-liquid heat exchanger. The air-liquid heat exchanger is suspended from the bottom wall of the containing cavity. The bottom wall of the containing cavity is higher than the bottom wall of the air outlet cavity and lower than the bottom wall of the air inlet cavity.

[0009] The fifth technical solution is based on the third technical solution, and is a preferred embodiment of the third technical solution. The air outlet cavity is provided with a blocking wall opposite to the air-liquid heat exchanger. The air outlet is located at the top of the air outlet cavity.

[0010] The sixth technical solution is based on the fourth or fifth technical solution, and is a preferred embodiment of the fourth or fifth technical solution. The air passing channel passes air along a horizontal second direction. The second direction is perpendicular to the first direction. The length ratio of the air inlet cavity to the air outlet cavity along the second direction is greater than 1.5. The air inlet cavity is provided with a wind guide wall inclined from the air inlet to the air outlet cavity.

[0011] The seventh technical solution is based on the sixth technical solution, and is a preferred embodiment of the sixth technical solution. The air inlet cavity is provided with an air inlet part on each side along the first direction. The air inlet cavity is further provided with a wind gathering part between the two air inlet parts. The air inlet part protrudes away from the side of the wind gathering part close to the air outlet cavity. The bottom of each air inlet cavity is provided with an air inlet. The wind guide wall is arranged on the air inlet part. The number of the heat dissipation fans is equal to the number of the air inlets, and each heat dissipation fan corresponds to one air inlet.

[0012] The eighth technical solution is based on the seventh technical solution, and is a preferred embodiment of the seventh technical solution. The side of the wind gathering part away from the air outlet cavity is further provided with a wind guide wall. The wind guide wall is higher than the wind guide wall and is inclined from the bottom to the side close to the air outlet cavity.

[0013] The ninth technical solution and related embodiments provide an electrical cabinet. The electrical cabinet comprises a cabinet body, at least one heat source and a heat dissipation device as described in any one of the first to sixth technical solutions. The heat source and the heat dissipation device are arranged in the cabinet body.

[0014] The tenth technical solution and related embodiments provide an electrical cabinet, comprising a cabinet body, at least one heat source and the heat dissipation device as described in the seventh or eighth technical solution, the heat source is located in the cabinet body and at least one heat source is located above the heat dissipation device; the cabinet body comprises a body, a first side wall and two second side walls, the first side wall is fixed to the body and perpendicular to the second direction, both of the second side walls have a fixed state of being fixed to the body and a separated state of being separated from the body, and the second side wall is perpendicular to the first direction in the fixed state; the outer cover is arranged on the first side wall, the air outlet is closer to the first side wall than the air inlet, and the side of the fan box body of the two heat dissipation fans away from each other is provided with a handle.

[0015] From the above description of the utility model and its specific embodiments, compared with the prior art, the technical solution and related embodiments of the utility model have the following beneficial effects due to the use of the following technical means:

[0016] In the first technical solution and related embodiments, the hot air in the cabinet body enters the outer cover through the ventilation opening and the air inlet and becomes cold air after passing through the air-liquid heat exchanger, and then the cold air flows into the cabinet body through the air outlet, realizing the recycling of the hot air in the cabinet body and the supply of cold air, thereby realizing the heat dissipation of the heat source in the cabinet body. Compared with the prior art in which the heat source is placed in the outer cover, the risk of liquid leakage of the air-liquid heat exchanger will not affect the heat source, the heat source runs more safely, and the heat dissipation device of the present application can dissipate heat for all heat sources in the cabinet body. Compared with the prior art in which a single heat dissipation air duct is used for the heat dissipation of a single heat source, the space occupied is smaller, which is conducive to the miniaturization of the cabinet body. The bottom and the upper part of the outer cover are respectively provided with an air inlet and an air outlet, the heat dissipation fan comprises a fan box body and a fan body, the fan box body is arranged at the air inlet and is provided with a ventilation opening along the horizontal first direction; the fan body is arranged in the fan box body and the axis extends along the first direction, which is used to drive the air to flow from the ventilation opening to the air outlet through the air inlet and the air duct. Therefore, even if the air-liquid heat exchanger leaks, the leaked liquid is not easy to enter the cabinet body through the air outlet under the action of gravity. Due to the flow of the heat dissipation air flow, the leaked liquid is also not easy to flow into the air inlet by overcoming the resistance of the heat dissipation air flow. Even if the leaked liquid enters the air inlet, the fan box body can catch the leaked liquid from the air inlet, thereby avoiding the influence on the inside of the cabinet body when the air-liquid heat exchanger leaks. In addition, the air inlet and the air outlet are respectively arranged on the bottom and the upper part of the outer cover, which makes the air inlet and the air outlet away from each other, thereby avoiding the cold air of the air outlet directly entering the air inlet, but can circulate in the cabinet body before entering the air inlet, thereby improving the heat dissipation efficiency of the cabinet body.

[0017] In the second technical solution and related embodiments, the projection of the air inlet and the air-liquid heat exchanger on the horizontal plane is completely staggered. Compared with the solution in which the projection of the air inlet and the air-liquid heat exchanger on the horizontal plane at least partially overlaps, the solution is more conducive to avoiding the leakage liquid from entering the cabinet through the air inlet under the action of gravity, further increases the resistance of the leakage liquid flowing to the air inlet when the air-liquid heat exchanger leaks, and further avoids the risk of leakage liquid at the air inlet when the air-liquid heat exchanger leaks.

[0018] In the third technical solution and related embodiments, the air-liquid heat exchanger separates the outer cover into an air inlet cavity communicating with the air inlet and an air outlet cavity communicating with the air outlet along the air passing direction of the air passing channel; the bottom of the air inlet cavity is provided with the air inlet, and the upper part of the air outlet cavity is provided with the air outlet, and the projection of the air outlet and the air-liquid heat exchanger on the air passing direction of the air passing channel is completely staggered, further increasing the resistance of the leakage liquid flowing to the air outlet when the air-liquid heat exchanger leaks, and further avoiding the risk of leakage liquid at the air outlet when the air-liquid heat exchanger leaks.

[0019] In the fourth technical solution and related embodiments, the air passing channel passes air along the horizontal direction, and the outer cover is further provided with a containing cavity suitable for containing the air-liquid heat exchanger, and the air-liquid heat exchanger is suspended on the bottom wall of the containing cavity. The bottom wall of the containing cavity is higher than the bottom wall of the air outlet cavity and lower than the bottom wall of the air inlet cavity. Therefore, even if the air-liquid heat exchanger leaks, the leakage liquid accumulates at the bottom of the containing cavity and is not easy to flow upward into the bottom of the air inlet cavity. On the other hand, the leakage liquid also accumulates at the bottom of the air outlet cavity and is not easy to flow upward through the air passing channel into the containing cavity. The leakage liquid is more dispersed and is not easy to leak out of the air inlet due to excessive accumulation, further avoiding the risk of leakage of the heat dissipation device.

[0020] In the fifth technical solution and related embodiments, the air outlet cavity is provided with a blocking wall opposite to the air-liquid heat exchanger, and the air outlet is located at the top of the air outlet cavity. Therefore, even if the air-liquid heat exchanger leaks, the leakage liquid will be blown to the blocking wall under the driving of the cooling air flow, and then fall into the bottom of the air outlet cavity under the action of gravity, thereby further increasing the resistance of the leakage liquid leaking out of the air outlet, and avoiding the risk of leakage of the heat dissipation device.

[0021] In the sixth technical solution and related embodiments, the length of the air inlet cavity and the air outlet cavity along the second direction is greater than 1.5, which is more conducive to increasing the length of the air inlet along the second direction, thereby being conducive to increasing the air inlet amount and improving the heat dissipation efficiency of the heat dissipation device. The air inlet cavity is provided with an air guide wall inclined upward from the air inlet to the direction close to the air outlet cavity. On the one hand, it is conducive to guiding the air flow of the air inlet to the air passing channel of the air flow heat exchanger. On the other hand, it is more conducive to reducing the volume of the air inlet cavity and the volume of the outer cover, thereby reducing the volume of the heat dissipation device.

[0022] In the seventh technical solution and related embodiments, the air inlet part protrudes from the side of the air gathering part away from the air outlet cavity, and the bottom of each air inlet cavity is provided with an air inlet, which is more conducive to reducing the volume of the air inlet cavity, thereby more conducive to reducing the volume of the outer cover and the volume of the heat dissipation device, and the arrangement of the two air inlets is more conducive to increasing the air inlet amount and improving the heat dissipation efficiency of the heat dissipation device. In addition, the gap between the two heat dissipation fans is large, which can better cooperate with the cabinet body.

[0023] In the eighth technical solution and related embodiments, the air gathering part is further provided with an air guide wall away from the air outlet cavity, the air guide wall is higher than the air guide wall and inclined from bottom to top towards the direction close to the air outlet cavity, which further reduces the volume of the air gathering part, thereby reducing the volume of the air inlet cavity, and is more conducive to the application of the heat dissipation device in the cabinet body.

[0024] The ninth technical solution and related embodiments have the technical advantages of any one of the first to sixth technical solutions.

[0025] The tenth technical solution and related embodiments have the technical advantages of the seventh or eighth technical solution. The cold air sent by the heat dissipation device to the inside of the cabinet body returns to the air inlet after passing through each heat source, which can take away the heat of each heat source, and the heat dissipation efficiency is high. The air outlet is closer to the first side wall than the air inlet, which is conducive to the air inlet and installation of the heat dissipation device. The outer cover is arranged on the first side wall, the second side wall and the body have a separated state, and the side of the fan box body of each heat dissipation fan away from each other is provided with a handle, so that the corresponding heat dissipation fan can be detached from the second side wall, which is conducive to the maintenance of the heat dissipation device. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0027] Figure 1 is a schematic view of the electrical cabinet of the embodiment of the present application;

[0028] Figure 2 is Figure 1 is a left view of the electrical cabinet of the embodiment of the present application;

[0029] Figure 3 is Figure 2 is a sectional view in the A-A direction.

[0030] MAIN REFERENCE MARK DESCRIPTION:

[0031] Cabinet 10; first side wall 11; second side wall 12; body 13; heat source 20; heat dissipation device 100; cover 30; air inlet cavity 31; air inlet part 311; air inlet 01; air guide wall 3111; air gathering part 312; air guide wall 3121; accommodating cavity 32; accommodating groove 321; air outlet cavity 33; first wall 331; baffle wall 332; air outlet 02; air-liquid heat exchanger 40; heat dissipation fan 50; fan box 51; fan body 52; ventilation opening 53; handle 54. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are preferred embodiments of the utility model, and should not be regarded as excluding other embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0033] In the claims, the description and the above drawings of the utility model, unless otherwise explicitly limited, the terms such as 'first','second' or 'third' are used to distinguish different objects, and are not used to describe a specific order.

[0034] In the claims, the description and the above drawings of the utility model, unless otherwise explicitly limited, for the orientation words, such as the terms 'center', 'transverse','vertical', 'horizontal','vertical', 'top', 'bottom', 'inner', 'outer', 'upper', 'lower', 'front','rear', 'left', 'right', 'clockwise', 'counterclockwise' indicate the orientation or position relationship based on the orientation and position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not used to indicate or imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the utility model.

[0035] In the claims, the description and the above drawings of the utility model, unless otherwise explicitly limited, such as the terms 'fixedly connected' or 'fixedly connected', should be understood broadly, that is, any connection mode without displacement relationship and relative rotation relationship between the two, that is, it includes non-detachable fixed connection, detachable fixed connection, integration and fixed connection through other devices or elements.

[0036] In the claims, the description and the above drawings of the utility model, such as the terms 'including', 'having' and their variants, are intended to mean 'including but not limited to'.

[0037] Referring to Figures 1-3 , Figures 1-3An electrical cabinet is shown, comprising a cabinet body 10, at least one heat source 20 and a heat dissipation device 100.

[0038] The cabinet body 10 is in the shape of a cuboid, and comprises a body 13, a first side wall 11 and two second side walls 12. The first side wall 11 is fixed to the body 13 and is perpendicular to the second direction. The two second side walls 12 each have a fixed state in which they are fixed to the body 13 and a separated state in which they are separated from the body 13, and in the fixed state the second side walls 12 are perpendicular to the first direction. In this embodiment, the width direction of the cabinet body is the first direction, the length direction is the second direction, and the height direction is the third direction, and the first direction, the second direction and the third direction are orthogonal. That is, in this embodiment, the third direction is the vertical direction, and the first direction and the second direction are both horizontal directions and are perpendicular to each other.

[0039] Referring to Figures 1-2 , the heat source 20 and the heat dissipation device 100 are both arranged in the cabinet body 10, and the at least one heat source 20 is located above the heat dissipation device 100. The heat dissipation device 100 is arranged on the inner surface of the first side wall 11. The heat dissipation device 100 can be used to dissipate heat for the heat source 20 inside the cabinet body 10, and comprises an outer cover 30, an air-liquid heat exchanger 40 and a heat dissipation fan 50. Figures 1-3 Only one heat source 20 is shown in

[0040] The outer cover 30 is arranged on the inner surface of the first side wall 11, and the bottom and the top of the outer cover 30 are respectively provided with an air inlet 01 and an air outlet 02. In this embodiment, the air outlet 02 is closer to the first side wall 11 than the air inlet 01.

[0041] In this embodiment, referring to Figure 3 , the outer cover 30 is sequentially provided with an air inlet cavity 31, a containing cavity 32 and an air outlet cavity 33 along the second direction, Figure 3 In this embodiment, the second direction is the left-right direction, the first direction is the front-rear direction, the air inlet cavity 31 is located on the left side of the containing cavity 32, the air outlet cavity 33 is located on the right side of the containing cavity 32, the length of the air inlet cavity 31 and the air outlet cavity 33 along the second direction is greater than 1.5, and the air outlet cavity 33 protrudes upward relative to the containing cavity 32.

[0042] The structure of the air inlet cavity 31 will be introduced first, referring to Figures 1-2 , Figure 1 In this embodiment, the first direction is the left-right direction, the second direction is the front-rear direction, Figure 2 In this embodiment, the first direction is the left-right direction, the second direction is the front-rear direction, the air inlet cavity 31 is provided with an air inlet portion 311 on each side along the first direction, the air inlet cavity 31 is further provided with a wind gathering portion 312 between the two air inlet portions 311, and the side of the air inlet portion 311 that is away from the air outlet cavity 33 is relative to the wind gathering portion 312 Figure 1The middle left side) is convex and the bottom of each air inlet part 311 is provided with an air inlet 01, that is, the bottom of the air inlet cavity 31 is provided with an air inlet 01; the air inlet part 311 is provided with an air guide wall 3111 inclined from the air inlet 01 to the direction close to the air outlet cavity 33, and the air collecting part 312 is away from the side of the air outlet cavity 33 Figure 1 The middle left side) is also provided with an air guide wall 3121 which is higher than the air guide wall 3111 and is inclined from bottom to top to the direction close to the air outlet cavity 33. That is, the number of air inlets 01 is two, and the two air inlets 01 are arranged along the first direction.

[0043] Referring to Figure 3 , the accommodation cavity 32 is used to accommodate the air-liquid heat exchanger 40 and the bottom thereof is provided with an accommodation groove 321, the air-liquid heat exchanger 40 is suspended on the bottom wall of the accommodation cavity 32, the bottom wall of the accommodation cavity 32 is higher than the bottom wall of the air outlet cavity 33 and lower than the bottom wall of the air inlet cavity 31.

[0044] The air outlet cavity 33 away from the air inlet cavity 31 is provided with a blocking wall 332 perpendicular to the second direction, the top of the air outlet cavity 33 is provided with a first wall 331, and the air outlet 02 is arranged on the first wall 331, so that the air outlet 02 is located in the upper part or even the top of the air outlet cavity 33. In the embodiment, the blocking wall 332 is attached to and fixed with the first side wall 11 of the cabinet body.

[0045] The air-liquid heat exchanger 40 is arranged in the outer cover 30 and divides the outer cover 30 along the second direction into the air inlet cavity 31 communicated with the air inlet 01 and the air outlet cavity 33 communicated with the air outlet 02. In the embodiment, the air-liquid heat exchanger 40 is arranged in the accommodation cavity 32 and spaced apart from the accommodation groove 321, the air-liquid heat exchanger 40 is opposite to the blocking wall 332, the air-liquid heat exchanger 40 is provided with a plurality of air passing channels passing air in the second direction, the projection of the air-liquid heat exchanger 40 on the projection plane perpendicular to the air passing direction of the air passing channel is completely staggered, that is, the air passing channel passes air in the horizontal direction, the air-liquid heat exchanger 40 divides the outer cover 30 along the air passing direction of the air passing channel into the air inlet cavity 31 communicated with the air inlet 01 and the air outlet cavity 33 communicated with the air outlet 02, and the projection of the air outlet 02 on the projection plane perpendicular to the air passing direction of the air passing channel is completely staggered with the air-liquid heat exchanger 40. Therefore, in the embodiment, the projection of the air inlet 01 on the horizontal plane is completely staggered with the air-liquid heat exchanger 40.

[0046] Referring to Figures 1-2 , the number of heat dissipation fans 50 is equal to and one-to-one corresponds to the number of air inlets 01, the heat dissipation fan 50 includes a fan box body 51 and a fan body 52, the fan box body 51 is arranged at the air inlet 01 and is provided with a ventilation opening 53 along the horizontal first direction; the fan body 52 is arranged in the fan box body 51 and the axis thereof extends along the first direction, which is used to drive air to flow from the ventilation opening 53 to the air inlet 01 and the air passing channel to the air outlet 02. The sides of the fan box bodies 51 of the two heat dissipation fans 50 away from each other are provided with handles 54.

[0047] In the embodiment, the hot air in the cabinet 10 enters the outer cover 30 through the air vent 53 and the air inlet 01, and becomes cold air after passing through the air-liquid heat exchanger 40. Then the cold air flows into the cabinet 10 through the air outlet 02, realizing the recycling of the hot air in the cabinet 10 and the supply of cold air, thereby realizing the heat dissipation of the heat source 20 in the cabinet 10. Compared with the prior art in which the heat source 20 is placed in the outer cover 30, the liquid leakage risk of the air-liquid heat exchanger 40 does not affect the heat source 20, the heat source 20 runs more safely, and the heat dissipation device 100 of the application can dissipate heat for all heat sources 20 in the cabinet 10. Compared with the prior art in which a single heat dissipation air duct is used for the heat dissipation of a single heat source 20, the space occupied is smaller, which is conducive to the miniaturization of the cabinet 10. The bottom and the upper part of the outer cover 30 are respectively provided with the air inlet 01 and the air outlet 02, the heat dissipation fan 50 includes a fan box 51 and a fan body 52, the fan box 51 is arranged at the air inlet 01 and is provided with an air vent 53 along the horizontal first direction; the fan body 52 is arranged in the fan box 51 and the axis extends along the first direction, which is used to drive the air to flow from the air vent 53 to the air outlet 02 through the air inlet 01 and the air duct. Therefore, even if the air-liquid heat exchanger 40 leaks, the leaked liquid is not easy to enter the cabinet 10 through the air outlet 02 under the action of gravity. Due to the flow of the heat dissipation air flow, the leaked liquid is also not easy to flow into the air inlet 01 by overcoming the resistance of the heat dissipation air flow. Even if the leaked liquid enters the air inlet 01, the fan box 51 can also catch the leaked liquid from the air inlet 01, thereby avoiding the influence on the inside of the cabinet 10 when the air-liquid heat exchanger 40 leaks. In addition, the air inlet 01 and the air outlet 02 are respectively arranged at the bottom and the upper part of the outer cover 30, so that the air inlet 01 and the air outlet 02 are far away from each other, thereby avoiding the cold air of the air outlet 02 directly entering the air inlet 01, but can circulate in the cabinet 10 first and then enter the air inlet 01, thereby improving the heat dissipation efficiency of the inside of the cabinet 10.

[0048] In the embodiment, the projection of the air inlet 01 and the air-liquid heat exchanger 40 on the horizontal plane is completely staggered, which is more conducive to avoiding the leakage of the liquid into the cabinet 10 through the air inlet 01 under the action of gravity, further increases the resistance of the leaked liquid flowing to the air inlet 01 when the air-liquid heat exchanger 40 leaks, and further avoids the leakage risk of the air inlet 01 when the air-liquid heat exchanger 40 leaks.

[0049] In the embodiment, the air-liquid heat exchanger 40 divides the outer cover 30 into an air inlet cavity 31 communicated with the air inlet 01 and an air outlet cavity 33 communicated with the air outlet 02 along the air passing direction of the air passing channel. The air inlet cavity 31 is provided with the air inlet 01 at the bottom, and the air outlet cavity 33 is provided with the air outlet 02 at the top. The projection of the air outlet 02 on the air passing direction of the air passing channel is completely staggered with the air-liquid heat exchanger 40, further increasing the resistance of the leaked liquid flowing to the air outlet 02 when the air-liquid heat exchanger 40 leaks, thereby further avoiding the risk of liquid leakage at the air outlet 02 when the air-liquid heat exchanger 40 leaks.

[0050] In the embodiment, the air passing channel passes air in the horizontal direction, and the outer cover 30 is further provided with a containing cavity 32 suitable for containing the air-liquid heat exchanger 40. The air-liquid heat exchanger 40 is suspended on the bottom wall of the containing cavity 32. The bottom wall of the containing cavity 32 is higher than the bottom wall of the air outlet cavity 33 and lower than the bottom wall of the air inlet cavity 31. Therefore, even if the air-liquid heat exchanger 40 leaks, the leaked liquid will accumulate at the bottom of the containing cavity 32 and is not easy to flow upward into the bottom of the air inlet cavity 31. On the other hand, the leaked liquid will also accumulate at the bottom of the air outlet cavity 33 and is not easy to flow upward through the air passing channel into the containing cavity 32. The leaked liquid is more dispersed and is not easy to leak out of the air inlet 01 due to excessive accumulation, thereby further avoiding the risk of liquid leakage of the heat dissipation device 100.

[0051] In the embodiment, the air outlet cavity 33 is provided with a blocking wall 332 opposite to the air-liquid heat exchanger 40. The air outlet 02 is located at the top of the air outlet cavity 33. Therefore, even if the air-liquid heat exchanger 40 leaks, the leaked liquid will be blown to the blocking wall 332 under the driving of the cooling air flow and then fall into the bottom of the air outlet cavity 33 under the action of gravity, thereby further increasing the resistance of the leaked liquid leaking out of the air outlet 02 and avoiding the risk of liquid leakage of the heat dissipation device 100.

[0052] In the embodiment, the length of the air inlet cavity 31 and the air outlet cavity 33 along the second direction is greater than 1.5, which is more conducive to increasing the length of the air inlet 01 along the second direction, thereby being conducive to increasing the air inlet amount and improving the heat dissipation efficiency of the heat dissipation device 100. The air inlet cavity 31 is provided with a wind guide wall 3111 inclined upward from the air inlet 01 to the direction close to the air outlet cavity 33. On the one hand, it is conducive to guiding the air flow of the air inlet 01 to the air passing channel of the air flow heat exchanger. On the other hand, it is more conducive to reducing the volume of the air inlet cavity 31 and the volume of the outer cover 30, thereby reducing the volume of the heat dissipation device 100.

[0053] In the embodiment, the air inlet part 311 protrudes from the side of the air gathering part 312 away from the air outlet cavity 33, and the bottom of each air inlet cavity 31 is provided with an air inlet 01. Compared with the scheme in which the air inlet part 311 does not protrude from the air gathering part 312, the volume of the air inlet cavity 31 is reduced, thereby the volume of the outer cover 30 and the volume of the heat dissipation device 100 are reduced. The arrangement of the two air inlets 01 is beneficial to increasing the air inlet amount and improving the heat dissipation efficiency of the heat dissipation device 100. In addition, the gap between the two heat dissipation fans 50 is large, which is beneficial to better cooperation with the cabinet body 10.

[0054] In the embodiment, the air gathering part 312 is further provided with an air guide wall 3121 away from the air outlet cavity 33. The air guide wall 3121 is higher than the air guide wall 3111 and is inclined from bottom to top towards the direction close to the air outlet cavity 33, thereby further reducing the volume of the air gathering part 312, and reducing the volume of the air inlet cavity 31, which is beneficial to the application of the heat dissipation device 100 in the cabinet body 10.

[0055] In the embodiment, the cold air sent by the heat dissipation device 100 to the inside of the cabinet body 10 returns to the air inlet 01 after passing through each heat source 20, thereby taking away the heat of each heat source 20, and the heat dissipation efficiency is high. The air outlet 02 is closer to the first side wall 11 than the air inlet 01, which is beneficial to the air inlet and installation of the heat dissipation device 100. The outer cover 30 is arranged on the first side wall 11, the second side wall 12 and the body 13 are in a separated state, and the side of the fan box 51 of each heat dissipation fan 50 away from each other is provided with a handle 54, so that the corresponding heat dissipation fan 50 can be detached from the second side wall 12, which is beneficial to the maintenance of the heat dissipation device 100.

[0056] The above description and embodiment are used to explain the protection scope of the utility model, but do not constitute the limitation of the protection scope of the utility model. Through the inspiration of the utility model or the above embodiment, the modification, equivalent replacement or other improvement of the utility model embodiment or one part of the technical features can be obtained by the ordinary skill in the art combined with the common knowledge, the ordinary skill in the art and / or the prior art through logical analysis, reasoning or limited test, which should be included in the protection scope of the utility model.

Claims

1. A heat dissipating device (100) for dissipating heat from a heat source (20) inside a cabinet (10), characterized in that, The heat dissipation device comprises a housing (30), an air inlet (01) and an air outlet (02) arranged at the bottom and top of the housing (30) respectively; an air-liquid heat exchanger (40) arranged in the housing (30) and provided with a plurality of air passing channels; and a heat dissipation fan (50) comprising a fan box (51) and a fan body (52), the fan box (51) is arranged at the air inlet (01) and provided with a ventilation opening (53) along a first horizontal direction, the fan body (52) is arranged in the fan box (51) and has an axis extending along the first direction, and the fan body (52) is used to drive air to flow from the ventilation opening (53) to the air outlet (02) through the air inlet (01) and the air passing channels.

2. A heat dissipating device (100) as claimed in claim 1, characterized in that The air inlet (01) and the projection of the air-liquid heat exchanger (40) on a horizontal plane are completely staggered.

3. A heat dissipating device (100) as claimed in claim 2, characterized in that The air-liquid heat exchanger (40) divides the housing (30) into an air inlet cavity (31) and an air outlet cavity (33) along the air passing direction of the air passing channels, the air inlet cavity (31) is in communication with the air inlet (01), and the air outlet cavity (33) is in communication with the air outlet (02); the bottom of the air inlet cavity (31) is provided with the air inlet (01), the upper part of the air outlet cavity (33) is provided with the air outlet (02), and the projection of the air outlet (02) on a projection plane perpendicular to the air passing direction of the air passing channels is completely staggered with the projection of the air-liquid heat exchanger (40) on the projection plane.

4. A heat dissipating device (100) as claimed in claim 3, characterized in that The air passing channels pass air along a horizontal direction, and the housing (30) is further provided with a containing cavity (32) suitable for containing the air-liquid heat exchanger (40), the air-liquid heat exchanger (40) is suspended from the bottom wall of the containing cavity (32), and the bottom wall of the containing cavity (32) is higher than the bottom wall of the air outlet cavity (33) and lower than the bottom wall of the air inlet cavity (31).

5. A heat dissipating device (100) as claimed in claim 3, characterized in that The air outlet cavity (33) is provided with a blocking wall (332) opposite to the air-liquid heat exchanger (40), and the air outlet (02) is located at the top of the air outlet cavity (33).

6. A heat dissipating device (100) according to claim 4 or 5, characterized in that The air passing channels pass air along a second horizontal direction, the second direction is perpendicular to the first direction, the length ratio of the air inlet cavity (31) to the air outlet cavity (33) along the second direction is greater than 1.5, and the air inlet cavity (31) is provided with a wind guide wall (3111) inclined upward and toward the air outlet cavity (33).

7. A heat dissipating device (100) as claimed in claim 6, characterized in that The air inlet cavity (31) is provided with an air inlet part (311) on each side along the first direction, and the air inlet cavity (31) is further provided with a wind gathering part (312) between the two air inlet parts (311), the air inlet part (311) is protruded from the side of the wind gathering part (312) away from the air outlet cavity (33), and the bottom of each air inlet cavity (31) is provided with an air inlet (01); the wind guide wall (3111) is arranged on the air inlet part (311); the number of the heat dissipation fans (50) is equal to the number of the air inlets (01) and one-to-one corresponding.

8. A heat dissipating device (100) as claimed in claim 7, characterized in that The side of the wind gathering part (312) away from the air outlet cavity (33) is further provided with a wind guide wall (3121), the wind guide wall (3121) is higher than the wind guide wall (3111) and inclined upward and toward the air outlet cavity (33).

9. An electrical cabinet, characterized in that The cabinet (10), at least one heat source (20) and the heat dissipation device (100) as claimed in any one of claims 1-6 are included, the heat source (20) and the heat dissipation device (100) are both placed in the cabinet (10).

10. An electrical cabinet, characterized in that The cabinet (10), at least one heat source (20) and the heat dissipation device (100) as claimed in claim 7 or 8 are included, the heat source (20) is placed in the cabinet (10) and at least one heat source (20) is placed above the heat dissipation device (100); the cabinet (10) includes a body (13), a first side wall (11) and two second side walls (12), the first side wall (11) is fixed to the body (13) and perpendicular to the second direction, the two second side walls (12) both have a fixed state of being fixed to the body (13) and a separated state of being separated from the body (13), and in the fixed state the second side wall (12) is perpendicular to the first direction; the outer cover (30) is installed on the first side wall (11), the air outlet (02) is closer to the first side wall (11) than the air inlet (01), and the fan box (51) of the two heat dissipation fans (50) is provided with a handle (54) on the side away from each other.

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