JPH03183198A - Cooling structure for immersed power supply - Google Patents

Abstract

PURPOSE:To provide a high-efficiency power supply with stabilized cooling capacity by immersing a DC-DC converter in coolant. CONSTITUTION:A DC-DC converter module 2 is housed in a container 1 and inserted into a connector 6 provided on the inner wall of the container. The container holds coolant 3, which may be water or fluorocarbon. The container includes, in its upper portion, a cooling plate 8 for cooling the coolant 3 carrying heat from the DC-DC converter module 2, and a cold plate 4 having coolant channels 5 in it. The cold plate cools the coolant through the cooling plate, thereby cooling the DC-DC converter efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cooling structure for a submerged power supply used in an electronic computer.

[Prior Art] Conventionally, power supplies have generally been cooled by forced air cooling using a fan provided at the bottom of the power supply.

However, in recent years, as electronic circuits have become more highly integrated, power consumption has increased, and power supplies with larger capacities and smaller sizes have come to be used. In this case, with the conventional forced air cooling mentioned above, the heat sink becomes large and downsizing cannot be expected, and if the air volume of the fan is increased, noise regulations cannot be met, so soundproofing measures must be taken. Instead of the forced air cooling mentioned above, a liquid cooling system is used.

In this type of cooling structure, as shown in Fig. 3, a circuit board 2 is inserted into a connector provided on the inside bottom of a storage container l made of metal, etc., and a space above the refrigerant liquid 3 and the container is filled with heat. An exchanger 4 was provided as a condenser and was designed to be cooled by water or other refrigerant.

Note that, as the refrigerant liquid 3, various fluorocarbons and the like, which are usually non-corrosive and non-dissociative solutions, are used.

[Problems to be Solved by the Invention] However, the conventional liquid cooling type cooling structure described above does not allow air to enter through the storage container l or other non-condensable air generated from parts inside the storage container l. The disadvantage is that the gas is concentrated around the heat exchanger 4, preventing liquefaction and reducing the cooling capacity over time.

Such a drawback is that when the heat exchanger 4 is installed in the refrigerant liquid 3,
Although the cooling capacity can be stabilized without depending on the impurity content in the refrigerant liquid 3, there is a problem that the cooling capacity itself is inferior to that when the heat exchanger 4 is installed in the space above the refrigerant liquid. Ta.

Furthermore, it has been pointed out that in the conventional structure, since the storage container l and the heat exchanger 4 are integrated, maintainability is poor, and unless the reliability is improved, the number of man-hours required for backtracking after assembly will increase.

The present invention was made in view of the above circumstances, and
The challenge is to provide a cooling structure for an immersed power supply that has stable cooling capacity and is efficient.

[Means for Solving the Problems] In order to solve the above problems, the present invention has the following configuration. That is, the bulk rectifier of the electronic computer, I) C-
In a multi-converter power supply system composed of a DC converter and a power supply control circuit section, a container is provided to house the DC-DC converter that is cooled by being immersed in a refrigerant liquid, and the container is filled with the refrigerant liquid. D in the refrigerant liquid
A cold plate in which the C-DC converter is immersed and which is provided with a cooling plate immersed in the refrigerant liquid and has a flow path for the refrigerant liquid inside is installed on the upper part of the container, and furthermore, the refrigerant in the container is An O-ring for sealing the liquid is interposed between the cold plate and the container.

[Embodiment] FIGS. 1 and 2 are cross-sectional views of an embodiment of the present invention. The DC-DC converter module 2 is inserted into a connector 6 provided on the inner surface of a storage container 1 filled with a refrigerant liquid 3, and is housed within the storage container 1. As the refrigerant liquid 3, water and various fluorocarbons can be used.

The upper part of the storage container l is provided with a cooling plate 8 for cooling the refrigerant liquid 3 to which heat has been transferred from the DC-DC converter module 2, and a flow path 5 through which the refrigerant liquid flows inside.
A cold plate 4 is attached with screws 7.

The cooling plates 8 are plate-shaped bodies, and are provided in plural on the inner surface of the cold plate 4 and immersed in the refrigerant liquid 3. There are two types of this: an integral type that is provided integrally with the cold plate 4, and a separate type that is attached to the cold plate 4 with screws or the like, but either can be used.

In this case, it is possible to set the area of the cooling plate 8 in contact with the refrigerant liquid 3 to a size that can exhibit an appropriate cooling capacity based on thermal analysis calculations from the power supply container, and an efficient immersion power supply can be obtained. .

Further, the cold plate 4 is made of a metal with excellent thermal conductivity, and a material such as brass is selected, for example.

With the above structure, the heat transfer surface 12 and the cooling plate 8
6. On the other hand, the refrigerant liquid 3 in the storage container 1 is cooled in the upper part of the side wall of the storage container 1.
By inserting the O-ring 10 into the container 1, the inside of the container 1 is sealed, and air is prevented from entering from the outside.

[Effects of the Invention] As explained above, the present invention is characterized by filling a refrigerant liquid into a container that accommodates a DC-DC conch, and adding DC to the refrigerant liquid.
- A cold plate in which the DC converk is immersed, a cold plate immersed in the refrigerant liquid, and a flow path for the refrigerant liquid inside is installed at the top of the container, so that the cooling plate in the refrigerant liquid is immersed. The cooling capacity is stabilized by heat exchange with
It also has the effect of creating an efficient immersion power source.

[Brief explanation of drawings]

Fig. 1 is a side sectional view showing an embodiment of the immersion power supply of the present invention, Fig. 2 is a front sectional view showing an embodiment of the immersion power supply of the invention, and Fig. 3 is a conventional liquid cooling module. FIG. l: Storage container 2: DC-DC converter 3:
Refrigerant liquid 4: Cold plate 5: Channel
6: Connector 7: Screw 8: Cooling plate 9: Groove 10: 0 ring

Claims (1)

[Claims] A bulk rectifier of an electronic computer, a DC-DC converter,
In a multi-converter power supply system consisting of a power supply control circuit section, a DC-DC converter is cooled by being immersed in a refrigerant liquid.
A container for storing the DC converter is provided, the container is filled with a refrigerant liquid, the DC-DC converter is immersed in the refrigerant liquid, and a cooling plate is provided to be immersed in the refrigerant liquid. A cold plate forming a flow path for a refrigerant liquid is installed at the top of the container, and an O-ring for sealing the refrigerant liquid in the container is interposed between the cold plate and the container. Cooling structure for immersion power supply.