Two-phase cold plate capable of observing flow pattern

Abstract

The utility model discloses a two-phase cold plate capable of observing a flow pattern, which comprises a bottom plate, the surface of the bottom plate is locally recessed to form an accommodating groove, and a capillary structure is mounted in the accommodating groove; the inside of the bottom plate is hollow, and the side edge of the bottom plate is provided with an inlet / outlet for liquid to enter and exit; the upper cover plate is installed on the bottom plate, and after the bottom plate is covered with the upper cover plate, the containing groove of the bottom plate is exposed; the upper cover plate comprises an upper metal plate and a lower transparent plate, the metal plate is provided with a hollow part, and the hollow part and the containing groove are consistent in shape and size. The transparent glass layer is designed and can be used for observing the heat exchange state of two-phase fluid on the surface of the capillary structure.

Description

Technical Field

[0001] This utility model relates to the field of two-phase cold plates. More specifically, this utility model relates to a two-phase cold plate with observable flow patterns. Background Technology

[0002] Currently, the flow state of the two-phase heat transfer process in a two-phase cold plate cannot be accurately determined by the pressure and temperature data at the inlet and outlet, which brings great difficulty to the calculation of the two-phase heat transfer process. Therefore, it is necessary to design a two-phase cold plate that can effectively determine the flow pattern and thus select the appropriate calculation model for calculation based on the flow pattern. Utility Model Content

[0003] To achieve these objectives and other advantages according to the present invention, a preferred embodiment of the present invention provides a two-phase cold plate with observable flow patterns, comprising:

[0004] The base plate has a partially recessed surface forming a receiving groove, and a capillary structure is installed inside the receiving groove; the base plate is hollow inside, and inlets and outlets for liquid to enter and exit are provided on the side of the base plate;

[0005] An upper cover plate is installed on the base plate and covers the base plate, exposing the receiving groove of the base plate; the upper cover plate includes an upper metal plate and a lower transparent plate, the metal plate having a hollow portion, the hollow portion and the receiving groove having the same shape and size.

[0006] The capillary structure includes a capillary base plate and capillary protrusions. The capillary base plate is surface-mounted in the receiving groove, and a number of elongated capillary protrusions are spaced apart on the capillary base plate.

[0007] According to a preferred embodiment of the present invention, an inlet / outlet flange is installed on the side of the base plate corresponding to the position of the inlet / outlet.

[0008] According to a preferred embodiment of the present invention, a sealing groove is provided on the upper surface of the base plate, and a sealing ring is installed in the sealing groove.

[0009] According to a preferred embodiment of the present invention, the receiving groove is n-shaped, and the capillary protrusion is also n-shaped, which is composed of three sub-capillary protrusions, and the adjacent two sub-capillary protrusions are spaced apart.

[0010] According to a preferred embodiment of the present invention, it further includes a heat source plate, of which at least two are attached to the bottom of the base plate.

[0011] According to a preferred embodiment of the present invention, the transparent plate is a transparent quartz glass plate.

[0012] According to a preferred embodiment of the present invention, the upper cover plate is mounted on the base plate by screws.

[0013] According to a preferred embodiment of the present invention, the heat source plate includes a hollow plate body, a heating wire, and a heat spreader plate. The plate body is divided into an inner space near the bottom plate and an outer space away from the bottom plate by the heat spreader plate, and the heating wire is disposed in the outer space.

[0014] This invention offers at least the following advantages: It incorporates a transparent glass layer for observing the heat transfer state of two-phase fluids on the surface of a capillary structure. Furthermore, a capillary structure is sintered inside the base plate, improving the heat transfer efficiency of the two-phase working fluid and increasing the surface heat transfer coefficient of the heat source region.

[0015] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the two-phase cold plate in this utility model, which allows for observation of the flow pattern.

[0017] Figure 2 This is a schematic diagram of the heat source plate in this utility model. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0019] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0020] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation of this utility model.

[0021] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0022] like Figure 1-2 As shown, a preferred embodiment of this utility model provides a two-phase cold plate with observable flow patterns, comprising:

[0023] The base plate 1 has a partially recessed surface forming a receiving groove 2, and a capillary structure 3 is installed inside the receiving groove 2; the base plate 1 is hollow inside, and the side of the base plate 1 is provided with an inlet and outlet for liquid to enter and exit; an inlet and outlet flange 4 is installed on the side of the base plate 1 corresponding to the position of the inlet and outlet.

[0024] The upper cover plate 5 is installed on the bottom plate 1, and the upper cover plate 5 covers the bottom plate 1, exposing the receiving groove of the bottom plate 1; the upper cover plate includes an upper metal plate 5-1 and a lower transparent plate 5-2, the metal plate has a hollow part 5-1-1, and the hollow part 5-1-1 has the same shape and size as the receiving groove.

[0025] The capillary structure 3 includes a capillary base plate and capillary protrusions. The capillary base plate is attached to the receiving groove 2, and a number of elongated capillary protrusions are spaced apart on the capillary base plate.

[0026] In the above technical solution, the refrigerant or other fluids enter the base plate 1 from the inlet in a subcooled or low-dryness state (dryness less than 0.1). After absorbing heat and evaporating through the capillary structure 3, the fluid flows out from the outlet, changing to a state with higher dryness (dryness greater than 0.6). During this process, the capillary structure increases the heat exchange area and improves the evaporation efficiency of the working fluid. The capillary protrusions are designed to increase the heat exchange area as the fluid flows through, thereby improving heat exchange efficiency.

[0027] The state of the working fluid evaporation process can be observed through the transparent plate above (which can be transparent quartz glass), and it can be determined whether it is a bubbly flow, a slug flow, or an annular flow. This allows for further calculation of the heat transfer capacity of the two-phase heat transfer process, enabling more accurate prediction of the characteristics of the two-phase heat transfer process.

[0028] According to a preferred embodiment of the present invention, a sealing groove is provided on the upper surface of the base plate 1, and a sealing ring is installed in the sealing groove.

[0029] According to a preferred embodiment of the present invention, the receiving groove is n-shaped and the capillary protrusion is also n-shaped, which is composed of three sub-capillary protrusions, and the adjacent two sub-capillary protrusions are spaced apart to form multiple gaps.

[0030] According to a preferred embodiment of the present invention, it further includes a heat source plate 6, of which there are at least two, which are surface-mounted on the bottom of the base plate 1.

[0031] According to a preferred embodiment of the present invention, the upper cover plate 5 is installed on the base plate 1 by screws 7, which is convenient to install and has a firm connection.

[0032] According to a preferred embodiment of the present invention, the heat source plate 6 includes a hollow plate body 6-1, a heating wire 6-2, and a heat spreader 6-3. The plate body is divided into an inner space near the bottom plate and an outer space away from the bottom plate by the heat spreader, and the heating wire is disposed in the outer space.

[0033] In the above technical solution, by setting up a heat spreader 6-3, the heat generated by the heating wire can be uniformly heated, and then further uniformly heated by the air in the outer space, so that the heating of the base plate 1 is more uniform, avoiding the uneven heating caused by the heating wire directly contacting the base plate.

[0034] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A two-phase cold plate with observable flow patterns, characterized in that, include: The base plate has a partially recessed surface forming a receiving groove, and a capillary structure is installed inside the receiving groove; the base plate is hollow inside, and inlets and outlets for liquid to enter and exit are provided on the side of the base plate; The upper cover plate is installed on the bottom plate and covers the bottom plate, exposing the receiving groove of the bottom plate; the upper cover plate includes an upper metal plate and a lower transparent plate, the metal plate has a hollow part, and the shape and size of the hollow part are the same as those of the receiving groove. The capillary structure includes a capillary base plate and capillary protrusions. The capillary base plate is mounted face-fitted in the receiving groove, and a number of elongated capillary protrusions are spaced apart on the capillary base plate, with adjacent capillary protrusions spaced apart.

2. The two-phase cold plate with observable flow pattern according to claim 1, characterized in that, Inlet and outlet flanges are installed on the side of the base plate at the positions corresponding to the inlet and outlet.

3. The two-phase cold plate with observable flow pattern according to claim 1, characterized in that, The upper surface of the base plate is provided with a sealing groove, and a sealing ring is installed in the sealing groove.

4. The two-phase cold plate with observable flow pattern according to claim 1, characterized in that, The receiving groove is n-shaped, and the capillary protrusion is also n-shaped, which is composed of three sub-capillary protrusions, with adjacent sub-capillary protrusions spaced apart.

5. The two-phase cold plate with observable flow pattern according to claim 1, characterized in that, It also includes heat source plates, of which there are at least two, which are face-mounted to the bottom of the base plate.

6. The two-phase cold plate with observable flow pattern according to claim 1, characterized in that, The transparent plate is a transparent quartz glass plate.

7. The two-phase cold plate with observable flow pattern according to claim 1, characterized in that, The upper cover plate is mounted on the base plate by screws.

8. The two-phase cold plate with observable flow pattern according to claim 5, characterized in that, The heat source plate includes a hollow plate body, heating wires, and a heat spreader. The plate body is divided into an inner space near the bottom plate and an outer space away from the bottom plate by the heat spreader. The heating wires are disposed in the outer space.

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