Oil-immersed high-frequency switching power supply box

Abstract

The utility model discloses an oil-immersed high-frequency switching power supply box, which comprises a box body, an oil outlet and an oil inlet are arranged on the box body so that insulating oil can enter and exit from the box body conveniently during cyclic utilization, a circulating cooling mechanism is connected outside the box body, the circulating cooling mechanism comprises a cooling box communicated with the oil outlet and an oil storage tank communicated with the oil inlet, and the oil storage tank is connected with the cooling box. The cooling box is communicated with the oil storage tank; and a stirring wheel for preventing the insulating oil from being solidified is also arranged in the box body. According to the oil-immersed high-frequency switching power supply box, the circulating cooling mechanism is arranged outside the box body to replace a cooling pipeline originally arranged in the box body, insulating oil is recycled, the size of the box body is effectively controlled, meanwhile, the heat dissipation effect of the insulating oil is guaranteed, the insulating oil is not prone to being solidified, and the service life of the oil-immersed high-frequency switching power supply box is prolonged. And each electrical element in the box body is effectively protected.

Description

Technical Field

[0001] The utility model relates to the technical field of high-frequency switching power supplies, in particular to an oil-immersed high-frequency switching power supply box. Background Art

[0002] When a high-frequency switching power supply is working, the high-frequency switching power supply is generally placed in a power supply box with a heat dissipation structure. The power supply box can be divided into two types according to its heat dissipation method: air-cooled type and liquid-cooled type. The air-cooled type uses devices such as fans to make the air flow and take away heat. The liquid-cooled type can be further divided into contact liquid cooling or non-contact liquid cooling. The non-contact liquid cooling mainly cools the air by introducing a coolant isolated from the power supply into the power supply box to achieve heat dissipation of the power supply. The contact liquid cooling mainly cools the power supply by immersing the power supply in insulating oil and using the insulating oil for heat dissipation.

[0003] Among the above several heat dissipation methods, the air-cooled type has poor heat dissipation effect, is greatly affected by the ambient temperature, and is prone to cause dust in the air to contact the power supply, resulting in aging and reduced service life. The non-contact liquid cooling method has a fair effect, but it is necessary to ensure the sealing of the coolant. Otherwise, once it leaks and contacts the power supply, it will pose a great safety hazard. The oil-immersed liquid cooling can isolate dust and has a better heat dissipation effect than the air-cooled type. However, after long-term operation, the overall temperature of the oil rises, and the insulating oil can only dissipate heat by contacting the air through the side wall of the box. When the external temperature is relatively high, its heat dissipation effect will also decrease. In order to ensure the heat dissipation effect, it is also necessary to set up a cooling pipeline equipped with a coolant circulation pump in the power supply box to cool the insulating oil, and the cooling pipeline occupies a large space, directly resulting in an increase in the volume of the power supply box; in addition, considering costs, the quality of the insulating oil used by ordinary enterprises is not particularly stable, and it is very easy to become viscous and difficult to flow after the temperature rises, thus having an adverse impact on heat dissipation.

[0004] Therefore, in combination with the above existing technical problems, it is necessary to provide a new technical solution. Content of the Utility Model

[0005] The purpose of the utility model is to provide an oil-immersed high-frequency switching power supply box that can efficiently dissipate heat without increasing the volume of the power supply box and the insulating oil is not prone to viscous solidification.

[0006] To solve the above technical problems, the utility model provides an oil-immersed high-frequency switching power supply box, and the specific technical solution is as follows:

[0007] An oil-immersed high-frequency switching power supply box includes a box body. An oil outlet and an oil inlet are provided on the box body to facilitate the entry and exit of insulating oil when it is recycled. A circulating cooling mechanism is connected to the outside of the box body. The circulating cooling mechanism includes a cooling box communicated with the oil outlet and an oil storage tank communicated with the oil inlet, and the cooling box and the oil storage tank are communicated with each other. A stirring wheel for preventing the insulating oil from solidifying is also arranged inside the box body.

[0008] Preferably, a cooling pipe is arranged in the cooling box. The cooling pipe is spiral. Two ends of the cooling pipe extend outwards from two sides of the cooling box respectively to form a cooling pipe inlet and a cooling pipe outlet. The cooling pipe inlet is communicated with the oil outlet, and the cooling pipe outlet is communicated with the oil storage tank.

[0009] Preferably, a plurality of refrigeration sheets are also arranged in the cooling box, and the refrigeration sheets are uniformly attached to the side surface of the cooling pipe.

[0010] Preferably, a pump body is also arranged between the cooling box and the oil storage tank. The inlet of the pump body is connected to the cooling pipe outlet, and the outlet of the pump body is connected to the inlet of the oil storage tank to facilitate providing power for the circulating insulating oil.

[0011] Preferably, a support plate for dividing the interior of the box body into upper and lower parts is arranged near the bottom side inside the box body. Electrical components in the box body are all installed on the support plate. The stirring wheel is located in the lower part of the box body, and a plurality of oil passing holes are formed in the support plate to communicate the upper and lower parts of the box body.

[0012] Preferably, the oil outlet is located on the side wall of the lower part of the box body, the oil inlet is located on the side wall of the upper part of the box body, and the stirring wheel is close to the oil outlet.

[0013] Preferably, a temperature sensor is also arranged inside the box body, and the temperature sensor is electrically connected to the pump body.

[0014] The oil-immersed high-frequency switching power supply box of the present invention has the following beneficial effects:

[0015] For the oil-immersed high-frequency switching power supply box of the present invention, by arranging a circulating cooling mechanism outside the box body to replace the cooling pipeline originally arranged inside the box body, the insulating oil is recycled. While effectively controlling the volume of the box body, the heat dissipation effect of the insulating oil is ensured, and the insulating oil is not easy to solidify, effectively protecting each electrical component inside the box body;

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, become obvious in part from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0017] To more clearly illustrate the technical solution of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is an oil-immersed high-frequency switching power supply box;

[0019] Figure 2 It is Figure 1 the structural schematic diagram of the circulating cooling mechanism in

[0020] Among them, 1 - box body; 11 - oil outlet; 12 - oil inlet; 13 - temperature sensor; 2 - support plate; 21 - oil passing hole; 3 - stirring wheel; 4 - cooling box; 41 - cooling pipe; 411 - cooling pipe inlet; 412 - cooling pipe outlet; 42 - refrigeration chip; 43 - pump body; 5 - oil storage tank. Specific embodiments

[0021] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation of the present utility model.

[0022] Embodiment

[0023] Please refer to Figures 1 to 2 , an oil-immersed high-frequency switching power supply box, including a box body 1. The box body 1 is provided with an oil outlet 11 and an oil inlet 12 to facilitate the entry and exit of insulating oil during recycling. A circulating cooling mechanism is connected to the outside of the box body. The circulating cooling mechanism includes a cooling box 4 communicated with the oil outlet 11 and an oil storage tank 5 communicated with the oil inlet 12. The cooling box and the oil storage tank are communicated with each other; a stirring wheel 3 for preventing the solidification of insulating oil is further provided inside the box body 1.

[0024] A cooling pipe 41 is provided in the cooling box 4. The cooling pipe is spiral. The two ends of the cooling pipe extend outward from both sides of the cooling box to form a cooling pipe inlet 411 and a cooling pipe outlet 412. The cooling pipe inlet is communicated with the oil outlet, and the cooling pipe outlet is communicated with the oil storage tank.

[0025] A plurality of refrigeration chips 42 are further provided in the cooling box 41. The refrigeration chips are evenly attached to the side surface of the cooling pipe.

[0026] A pump body 43 is also provided between the cooling box 4 and the oil storage tank 5. The inlet of the pump body is connected to the outlet of the cooling pipe, and the outlet of the pump body is connected to the inlet of the oil storage tank to facilitate providing power for the circulating insulating oil.

[0027] A support plate 2 that divides the interior of the box body into upper and lower parts is provided near the bottom side inside the box body 1. The electrical components in the box body are all installed on the support plate. The stirring wheel 3 is located in the lower part of the box body. A plurality of oil passing holes 21 are provided on the support plate to communicate the upper and lower parts of the box body.

[0028] The oil outlet 11 is located on the side wall of the lower part of the box body, and the oil inlet 12 is located on the side wall of the upper part of the box body. The stirring wheel is close to the oil outlet 11.

[0029] A temperature sensor 13 is also provided inside the box body 1. The temperature sensor is electrically connected to the pump body 43.

[0030] In the oil-immersed high-frequency switching power supply of this embodiment, during operation, the insulating oil temperature inside the box body is detected by the temperature sensor 13. When the temperature reaches the preset value, the pump body 43 receives the signal and operates. The insulating oil in the box body is pumped out from the oil outlet through the cooling pipe 41. The insulating oil is cooled by the cooling box and then enters the oil storage tank for caching, and then enters the box body again through the oil inlet 12. During this process, the stirring wheel 3 keeps rotating to make the insulating oil in a fluctuating state, preventing the blockage of the oil outlet and the influence on the electrical components caused by the increase in the viscosity of the insulating oil due to too high oil temperature.

[0031] The beneficial effect of the present utility model is that by replacing the cooling pipeline originally provided inside the box body with an external circulating cooling mechanism for the box body, the insulating oil is recycled, effectively controlling the volume of the box body while ensuring the heat dissipation effect of the insulating oil, and the insulating oil is not prone to solidification, effectively protecting the electrical components inside the box body.

[0032] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, and variations to the above embodiments within the scope of the present utility model.

Claims

1. An oil-immersed high-frequency switching power supply box, characterized in that: The invention comprises a box body (1), the box body (1) is provided with an oil outlet (11) and an oil inlet (12) for facilitating the entry and exit of insulating oil into and out of the box body during recycling, the box body is externally connected with a circulating cooling mechanism, the circulating cooling mechanism comprises a cooling box (4) connected to the oil outlet (11) and an oil storage tank (5) connected to the oil inlet (12), the cooling box and the oil storage tank being connected to each other; the box body (1) is also internally provided with a stirring wheel (3) for preventing the insulating oil from solidifying.

2. The oil-immersed high-frequency switching power supply box according to claim 1 is characterized in that: The cooling box (4) is provided with a cooling pipe (41), which is spiral-shaped, with two ends of the cooling pipe extending from two sides of the cooling box to the outside to form a cooling pipe inlet (411) and a cooling pipe outlet (412), the cooling pipe inlet is connected to the oil outlet, and the cooling pipe outlet is connected to the oil storage tank.

3. The oil-immersed high-frequency switching power supply box according to claim 2 is characterized in that: The cooling box (4) is also provided with a plurality of cooling fins (42), which are evenly attached to the sides of the cooling pipe.

4. The oil-immersed high-frequency switching power supply box according to claim 2 is characterized in that: A pump body (43) is also provided between the cooling box (4) and the oil storage tank (5), the inlet of the pump body being connected to the outlet of the cooling pipe, and the outlet of the pump body being connected to the inlet of the oil storage tank so as to provide power for circulating insulating oil.

5. The oil-immersed high-frequency switching power supply box according to claim 1 is characterized in that: A support plate (2) is provided near the bottom of the box body (1) to divide the inside of the box body into an upper part and a lower part. The electrical components in the box body are mounted on the support plate. The stirring wheel (3) is located at the lower part of the box body. A plurality of oil holes (21) are provided on the support plate to connect the upper part and the lower part of the box body.

6. The oil-immersed high-frequency switching power supply box according to claim 5 is characterized in that: The oil outlet (11) is located on the lower side wall of the box body, the oil inlet (12) is located on the upper side wall of the box body, and the stirring wheel is close to the oil outlet.

7. The oil-immersed high-frequency switching power supply box according to claim 4 is characterized in that: A temperature sensor (13) is also provided in the box body (1), and the temperature sensor is electrically connected to the pump body (43).

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