Cooling device

Abstract

This invention provides a cooling device, relating to the technical field of lasers. The cooling device includes: a deformable contact membrane, the front side of which is used to contact a laser; the cooling device further includes a flexible pipe located on the back side of the contact membrane, the flexible pipe being able to deform and compress the contact membrane after being filled with liquid; the number of flexible pipes is multiple, and the multiple flexible pipes compress the contact membrane at different positions.

Description

Technical Field

[0001] This invention relates to the field of laser technology, and in particular to a cooling device. Background Technology

[0002] Lasers, as high-power-density devices, are widely used in industrial processing, medical equipment, and scientific research. With the continuous increase in laser power, the heat generated also increases, making effective heat dissipation a key factor in ensuring stable laser operation and extending its lifespan. Traditional water-cooling technology dissipates heat by having water-cooling strips in close contact with the laser's sidewalls, transferring heat to a cooling water circulation system.

[0003] Currently, common water-cooling strips employ a standardized design, with their contact surfaces typically being planar or regularly curved, suitable for lasers with flat sidewalls or regular shapes. In practical applications, the water-cooling strips are mechanically fixed or filled with thermally conductive adhesive to form a tight contact with the laser sidewall, ensuring efficient heat conduction. For lasers with ordinary cylindrical or rectangular cross-sections, this design provides good heat dissipation.

[0004] However, in certain specialized applications, the sidewalls of lasers are designed with irregular shapes, potentially including protrusions, recesses, or other complex geometric features. These structures may be designed to meet specific optical performance, mechanical strength, or integration requirements. Because the contact surface of the water-cooling strip cannot accommodate this non-standard shape, a significant gap exists between the two, reducing the effective contact area and potentially creating an air layer within the gap, further hindering heat conduction.

[0005] Under current technological conditions, this mismatch in physical contact leads to a significant increase in thermal resistance, preventing heat from being transferred from the laser sidewalls to the water-cooling strips in a timely manner. Especially under high-power operation, the accumulation of localized heat can cause problems such as laser performance degradation, wavelength drift, and even device damage. Although heat dissipation efficiency can be compensated for by increasing the water-cooling system pressure or lowering the cooling water temperature, these methods increase system complexity and energy consumption. Summary of the Invention

[0006] The purpose of this invention is to provide a cooling device to alleviate the technical problem of small contact area between existing cooling devices and irregularly shaped devices to be cooled.

[0007] In a first aspect, the present invention provides a cooling device comprising: a deformable contact membrane, the front side of which is used to contact a laser;

[0008] The cooling device also includes flexible pipes located on the back side of the contact membrane. These flexible pipes are able to deform and compress the contact membrane after being filled with liquid.

[0009] There are multiple flexible tubes, which are pressed against the contact membrane at different locations.

[0010] Furthermore, the flexible pipe has a preset shape so that it can return to the preset shape after drainage.

[0011] Furthermore, the flexible conduit includes an inlet port and an outlet port, as well as a pipe body connecting the inlet port and the outlet port. Starting from the inlet port, the pipe body extends towards the contact membrane side, then bends or bends in the opposite direction, and then extends away from the contact membrane to the outlet port.

[0012] Furthermore, multiple flexible pipes are arranged in an array.

[0013] Furthermore, the number of rows in the array is less than or equal to the number of columns;

[0014] The inlet ports of multiple flexible pipes in the same row of the array are connected to the same inlet pipe; the outlet ports of multiple flexible pipes in the same row of the array are connected to the same outlet pipe.

[0015] In a second aspect, the present invention provides a cooling device comprising: a housing and a deformable contact membrane, the housing including an opening which is closed by the contact membrane, the housing and the deformable contact membrane defining an inner cavity.

[0016] The outer casing also includes a first plate and a second plate that both extend along a first direction. The first plate is spaced apart from the contact film. The second plate is connected to the contact film. The inner wall of the outer casing opposite to the contact film is spaced apart from the second plate.

[0017] There are multiple first and second boards, and the first and second boards are distributed alternately along the second direction, which is perpendicular to the first direction.

[0018] The first and second plates define a meandering flow channel within the inner cavity;

[0019] The outer casing is provided with an inlet and an outlet that connect to a meandering flow channel, and the liquid flowing in the meandering flow channel can impact the contact membrane.

[0020] Furthermore, the second plate is slidably connected to the outer shell, and the sliding direction is the first direction.

[0021] Furthermore, the second board includes multiple sub-boards connected sequentially along a third direction;

[0022] In the third direction, the two outermost sub-plates slide with the outer shell along the first direction;

[0023] Furthermore, two adjacent sub-plates are slidably connected along the first direction.

[0024] Furthermore, of the outer shell and the sub-plate slidably connected to the outer shell, one is provided with a first dovetail groove and the other is provided with a first dovetail slider, the first dovetail slider being slidably connected in the first dovetail groove.

[0025] And / or, in two adjacent sub-plates, one sub-plate is provided with a second dovetail groove, and the other sub-plate is provided with a second dovetail slider, the second dovetail slider being slidably connected in the second dovetail groove.

[0026] Furthermore, an elastic reset member extending in the first direction is provided between the end of the sub-plate away from the contact film and the outer casing.

[0027] This invention has at least the following advantages or beneficial effects:

[0028] The present invention provides a cooling device comprising: a deformable contact membrane, the front side of which is used to contact a laser; the cooling device further comprising a flexible pipe located on the back side of the contact membrane, the flexible pipe being able to deform and compress the contact membrane after being filled with liquid; the number of flexible pipes is multiple, and the multiple flexible pipes compress the contact membrane at different positions.

[0029] The irregularly shaped surface of the device to be cooled is pressed tightly against the contact film. When cooling is required, coolant is injected into the flexible pipe. The expanded flexible pipe contacts and squeezes the contact film, thereby pushing the contact film outward. When there is a depression on the irregularly shaped surface of the device to be cooled outside the contact film, this part of the contact film will be pushed into the depression so that the contact film can fill the depression position of the irregularly shaped surface of the device to be cooled. This increases the contact area between the contact film and the irregularly shaped surface of the device to be cooled, and increases the heat conduction area between the device to be cooled and the contact film. The coolant then carries away the heat absorbed on the contact film, thereby achieving heat dissipation of the device to be cooled.

[0030] Another cooling device provided by the present invention includes: a housing and a deformable contact membrane, the housing including an opening, the opening being closed by the contact membrane, the housing and the deformable contact membrane defining an inner cavity; a first plate and a second plate, both extending along a first direction, are further disposed within the housing, the first plate being spaced apart from the contact membrane; the second plate being connected to the contact membrane, and an inner wall of the housing opposite to the contact membrane being spaced apart from the second plate; there are multiple first plates and second plates, which are alternately distributed along a second direction, the second direction being perpendicular to the first direction; the first plates and the second plates define a meandering flow channel within the inner cavity.

[0031] The irregularly shaped surface of the device to be cooled is pressed tightly against the contact film. A second plate, spaced apart, divides the contact film into multiple contact portions. A meandering flow channel turns inside each contact portion, and the flow segment in the meandering channel, moving towards the contact film, impacts the contact portion, causing each contact portion to bulge outwards. When cooling is required, coolant is injected into the meandering flow channel. The flowing coolant contacts and presses the contact film outwards. When there is a depression on the irregularly shaped surface of the device to be cooled outside the contact film, the corresponding contact portion will sink into the depression, allowing the contact film to fill the depression. This increases the contact area between the contact film and the irregularly shaped surface of the device to be cooled, increasing the thermal conductivity area between the device and the contact film. The coolant then carries away the heat absorbed by the contact film, thus achieving heat dissipation from the device to be cooled. Attached Figure Description

[0032] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 This is a side view of the cooling device provided in Embodiment 1 of the present invention;

[0034] Figure 2 This is a top view of the cooling device provided in Embodiment 1 of the present invention;

[0035] Figure 3 This is a top view of the cooling device provided in Embodiment 2 of the present invention;

[0036] Figure 4 This is a top view of the cooling device provided in Embodiment 2 of the present invention after it is fitted with the irregularly shaped surface of the device to be cooled;

[0037] Figure 5 This is a side view of the movable plate of the cooling device provided in Embodiment 2 of the present invention;

[0038] Figure 6 This is a side view of the cooling device provided in Embodiment 2 of the present invention after one of its sub-plates has been moved;

[0039] Figure 7 This is a cross-sectional view of the connection between two adjacent sub-plates of the movable plate of the cooling device provided in Embodiment 2 of the present invention;

[0040] Figure 8 This is a side view of the movable plate of the cooling device provided in Embodiment 3 of the present invention after one of its sub-plates has been moved.

[0041] Figure 9 This is a schematic diagram of a cooling device provided in an embodiment of the present invention.

[0042] Icons: 1-Contact membrane; 2-Flexible pipe; 3-Inlet pipe; 4-Outlet pipe; 52-Left side wall; 53-Front side wall; 54-Rear side wall; 55-Upper side wall; 56-Lower side wall; 6-First plate; 7-Second plate; 71-Sub-plate; 8-Elastic reset component; 9-Second dovetail slider;

[0043] 10-Cooling device; 11-Base plate; 12-Laser. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0046] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0047] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention 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, they should not be construed as limitations on this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0048] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0049] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] Example 1

[0051] like Figure 1 and Figure 2 As shown, the cooling device 10 provided by the present invention includes: a housing and a deformable contact membrane 1. The housing has an opening on one side, the contact membrane 1 is connected to the housing and closes the opening, and the contact membrane 1 is in a taut state. The front side of the contact membrane 1 (the side facing the outside of the housing) is used to contact the laser 12. The contact membrane 1 is deformable under the action of external force and returns to its original shape after the external force is removed.

[0052] The material of contact membrane 1 is based on existing technology and can be a metal-polymer composite material. For example, metal foil, metal mesh (copper, aluminum) or thermally conductive fibers can be embedded in a polymer matrix (such as silicone) to meet the requirements of deformability, thermal conductivity and providing a welding interface, so that it can be welded and fixed to the shell.

[0053] The cooling device 10 also includes flexible pipes 2, which are disposed inside the housing and located on the back side of the contact membrane 1. The flexible pipes 2 are very close to the contact membrane 1. The flexible pipes 2 can deform after being filled with liquid, such as by increasing their diameter and / or length. After deformation, they can squeeze the contact membrane 1, thereby squeezing the contact membrane 1 outward. There are multiple flexible pipes 2, and multiple flexible pipes 2 squeeze the contact membrane 1 at different positions.

[0054] In use, the irregularly shaped surface of the device to be cooled is pressed tightly against the contact film 1. When cooling is required, coolant is injected into the flexible pipe 2. The expanded flexible pipe 2 contacts and squeezes the contact film 1, thereby pushing the contact film 1 outward. When there is a depression on the irregularly shaped surface of the device to be cooled on the outside of the contact film 1, this part of the contact film 1 will be pushed into the depression so that the contact film 1 can fill the depression position of the irregularly shaped surface of the device to be cooled, thereby increasing the contact area between the contact film 1 and the irregularly shaped surface of the device to be cooled, increasing the heat conduction area between the device to be cooled and the contact film 1, and the coolant then carries away the heat absorbed on the contact film 1, thereby achieving heat dissipation of the device to be cooled.

[0055] The flexible pipe 2 has a preset shape so that it can return to the preset shape after the liquid is drained.

[0056] The preset shape refers to the fixed shape of the flexible pipe 2, which can be maintained without being subjected to other external forces (including but not limited to the internal pressure formed by liquid filling). The flexible pipe 2 can be made of a relatively rigid material, thus minimizing its deformation, because even if there are irregular surfaces on the device to be cooled, the depth of the depressions on those surfaces will not be too high. A rigid flexible pipe 2 can maintain its preset shape and restore it after liquid drainage, avoiding different shapes after each drainage, which would cause the flexible pipe 2 to abut against the contact membrane 1 at different locations during the next liquid filling.

[0057] The flexible conduit 2 includes an inlet port and an outlet port, as well as a tube body connecting the inlet and outlet ports. The tube body can be a corrugated pipe. The inlet port and outlet port 4 are fixed relative to the outer shell. The tube body is bent or kinked within the outer shell. Specifically, the tube body starts from the inlet port, extends towards the contact membrane 1, then bends or kinks in the opposite direction, and extends away from the contact membrane 1 to the outlet port, roughly forming a "U" shape. After the flexible conduit 2 is filled with liquid, its bend or kinked position moves towards the contact membrane 1, thereby squeezing the contact membrane 1 outward.

[0058] The contact membrane 1 is roughly rectangular. Flexible channels 2 can be set in the length and height directions of the rectangle so that multiple flexible channels 2 are arranged in an array to cover as much of the irregular surface of the device to be cooled as possible.

[0059] The number of rows in the array is less than or equal to the number of columns; the inlet ports of multiple flexible pipes 2 in the same row of the array are connected to the same inlet pipe 3; the outlet ports of multiple flexible pipes 2 in the same row of the array are connected to the same outlet pipe 4.

[0060] like Figure 1 and Figure 2 As shown, for example, a 3*5 array arrangement can be used, meaning the array has three flexible pipes 2 in the height direction and five flexible pipes 2 in the length direction, for a total of fifteen flexible pipes 2. The inlet ports of the five flexible pipes 2 in the same row are connected to the same inlet pipe 3, and the outlet ports are connected to the same outlet pipe 4. In this way, only three inlet pipes 3 and three outlet pipes 4 are needed to achieve liquid inflow and outflow. Fewer inlet pipes 3 and outlet pipes 4 are required.

[0061] Example 2

[0062] like Figure 3 As shown, the similarity with Embodiment 1 is that in both Embodiment 1 and Embodiment 2, a deformable contact film 1 is used to contact the irregular surface of the device to be cooled, and the thrust required for the deformation of the contact film 1 comes from the thrust generated when the coolant flows.

[0063] Specifically, the cooling device 10 provided by the present invention includes: a housing and a deformable contact membrane 1. The shape of the housing can be, but is not limited to, a cube. In other possible implementations, the shape of the housing can also be an irregular shape.

[0064] The material of contact membrane 1 is based on existing technology and can be a metal-polymer composite material. For example, metal foil, metal mesh (copper, aluminum) or thermally conductive fibers can be embedded in a polymer matrix (such as silicone) to meet the requirements of deformability, thermal conductivity and providing a welding interface, so that it can be welded and fixed to the shell.

[0065] The housing includes an opening, and the housing does not have a right side wall to form the aforementioned opening. The opening is closed by a contact membrane 1. The other sides of the housing include an upper side wall 55, a lower side wall 56, a left side wall 52, a front side wall 53, and a rear side wall 54. The upper side wall 55, lower side wall 56, left side wall 52, front side wall 53, and rear side wall 54 are connected to each other. The housing and the deformable contact membrane 1 define an inner cavity, wherein the four sides of the contact membrane 1 can be connected to the upper side wall 55, lower side wall 56, front side wall 53, and rear side wall 54 respectively, thereby completely blocking the right side opening of the housing.

[0066] like Figure 3 and Figure 4 As shown, the outer casing also includes a first plate 6 and a second plate 7 extending along a first direction (left-right direction in this embodiment). The upper and lower ends of the first plate 6 and the second plate 7 are respectively connected to the upper sidewall 55 and the lower sidewall 56 of the outer casing. Figure 3 As shown, the first plate 6 is positioned on the left side, with its left end connected to the left side wall 52 of the outer casing, and its right end spaced apart from the contact film 1. The right end of the second plate 7 is connected to the contact film 1, and its left end is spaced apart from the left side wall 52.

[0067] There are multiple first plates 6 and second plates 7, arranged alternately along the second direction (the front-to-back direction in this embodiment). It should be noted that the projection of the right end of the first plate 6 in the front-to-back direction falls on the second plate 7, and correspondingly, the projection of the left end of the second plate 7 in the front-to-back direction falls on the first plate 6. The first plates 6 and second plates 7 define a meandering flow channel within the inner cavity. A liquid inlet can be formed on the front sidewall 53 of the outer casing, and the liquid inlet is positioned to the left; a liquid outlet can be formed on the rear sidewall 54 of the outer casing, and the liquid outlet is also positioned to the left. Figure 3 As shown, from front to back, the first plates 6 are designated A1, A2, A3...An, and the corresponding second plates 7 are designated B1, B2, B3...Bm. A first transverse flow channel is formed between the front sidewall 53 and A1, and a first longitudinal flow channel is formed by the gap between A1 and the contact film 1; a second transverse flow channel is formed between A1 and B1, a second longitudinal flow channel is formed by the gap between B1 and the left sidewall 52, a third transverse flow channel is formed between B1 and A2, and so on, thus forming a meandering flow channel.

[0068] Before cooling, the irregularly shaped surface of the device to be cooled is pressed tightly against the contact film 1. A second plate 7, spaced apart, divides the contact film 1 into multiple contact portions. Furthermore, the meandering flow channel turns inside each contact portion, and the flow segment in the meandering channel flowing towards the contact film 1 impacts the contact portion, causing each contact portion to tend to bulge outwards. When cooling is required, coolant is injected into the meandering flow channel. The flowing coolant contacts and presses the contact film 1 outwards. When there is a depression on the irregularly shaped surface of the device to be cooled outside the contact film 1, the corresponding contact portion will sink into the depression, allowing the contact film 1 to fill the depression. This increases the contact area between the contact film 1 and the irregularly shaped surface of the device to be cooled, increasing the thermal conductivity area between the device to be cooled and the contact film 1. The coolant then carries away the heat absorbed by the contact film 1, thereby achieving heat dissipation from the device to be cooled.

[0069] The second plate 7 is slidably connected to the outer shell, and the sliding direction is left and right.

[0070] like Figure 3 and Figure 4 As shown, after the coolant impacts the contact film 1, if there is a depression on the irregular surface of the device to be cooled, the contact film 1 can drive the corresponding second plate 7 to move towards the device to be cooled, thereby causing the contact film 1 to generate a larger deformation and fit more tightly with the irregular surface. In this embodiment, the second plate 7 has three plates in the front-to-back direction. When the depression is located at the position corresponding to the middle second plate 7, the front and back second plates 7 remain stationary, while only the third second plate 7 moves to the right, thereby causing the middle of the contact film 1 to generate a larger displacement.

[0071] The second plate 7 includes a plurality of sub-plates 71 connected sequentially along a third direction (vertical in this embodiment); in the vertical direction, the two outermost sub-plates 71 slide with the outer shell in the left and right directions respectively; and adjacent sub-plates 71 slide and connect in the left and right directions.

[0072] like Figure 5 As shown, by dividing the second plate 7 into multiple sub-plates 71 that slide together vertically, vertical partitions can be formed. For example, in this embodiment, a second plate 7 is formed by four sub-plates 71. When the recessed position is located in the area corresponding to the middle two sub-plates 71, such as... Figure 6 As shown, the top and bottom sub-plates 71 remain stationary, while only the two middle sub-plates 71 move to the right, thereby allowing the middle area of ​​the contact film 1 to better fit the recessed surface.

[0073] It should be noted that the upper edge of the topmost sub-plate 71 is slidably connected to the upper sidewall 55 of the outer shell, and the lower edge of the bottommost sub-plate 71 is slidably connected to the lower sidewall 56 of the outer shell.

[0074] like Figure 7 As shown, to ensure smoother sliding between the sub-plate 71 and the outer casing without wobbling, one of the outer casing and the sub-plate 71 slidably connected to it can be provided with a first dovetail groove, and the other with a first dovetail slider, which is slidably connected within the first dovetail groove. Similarly, in two adjacent sub-plates 71, one sub-plate 71 can be provided with a second dovetail groove, and the other sub-plate 71 can be provided with a second dovetail slider 9, which is slidably connected within the second dovetail groove. The cooperation between the dovetail-shaped (trapezoidal) slider and the groove can form a stable limit in both the vertical and front-back directions, thereby making the movement of the sub-plate 71 smoother in the left-right direction.

[0075] Example 3

[0076] like Figure 8 As shown, based on Embodiment 2, an elastic reset member 8 extending in the left-right direction is provided between the end of the sub-plate 71 away from the contact film 1 and the outer shell.

[0077] After the coolant is drained, the subplate 71 can move to the left side wall 52 under the action of the elastic reset member 8 (e.g., a spring), thereby resetting to the initial state. In the initial state, the contact film 1 is a plane to facilitate the next contact with different irregular surfaces.

[0078] like Figure 9 As shown, the cooling device provided in this embodiment of the invention includes the cooling device 10 described above.

[0079] There are two cooling devices 10, located on opposite sides of the laser 12. Adjusting the distance between the two cooling devices 10 can clamp the laser 12 located in the middle position so that the contact film 1 of the cooling device 10 is in close contact with the side wall of the laser 12.

[0080] The cooling equipment also includes a base plate 11, and the cooling device 10 is slidably connected to the base plate 11 to adjust the distance between the two cooling devices 10.

[0081] The base plate 11 is also provided with cooling channels, so that the base plate 11 can cool the bottom surface of the laser 12.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. Cooling device, characterized in that The utility model relates to a liquid contactor, comprising: a shell and a deformable contact membrane (1), the shell comprising an opening, the opening being closed by the contact membrane (1), the shell and the deformable contact membrane (1) defining an inner cavity; the contact membrane (1) being deformable under an external force and returning to its original shape after the external force is removed; the shell further comprising a first plate (6) and a second plate (7) extending along a first direction, the first plate (6) being spaced apart from the contact membrane (1), and the second plate (7) being connected to the contact membrane (1), the inner wall of the shell opposite to the contact membrane (1) being spaced apart from the second plate (7); the first plate (6) and the second plate (7) are both multiple in number, and are alternately distributed one by one along a second direction, the second direction being perpendicular to the first direction; the first plate (6) and the second plate (7) define a serpentine flow channel in the inner cavity; the shell is provided with a liquid inlet and a liquid outlet communicating with the serpentine flow channel, and the flowing liquid in the serpentine flow channel can impact the contact membrane (1).

2. Cooling device according to claim 1, characterized in that The second plate (7) is in sliding connection with the shell, and the sliding direction is the first direction.

3. Cooling device according to claim 2, characterized in that The second plate (7) comprises a plurality of sub-plates (71) connected in sequence along a third direction; in the third direction, the two sub-plates (71) located at the outermost ends are respectively in sliding connection with the shell along the first direction; and the adjacent two sub-plates (71) are in sliding connection along the first direction.

4. Cooling device according to claim 3, characterized in that One of the shell and the sub-plate (71) in sliding connection with the shell is provided with a first dovetail groove, and the other is provided with a first dovetail slider, the first dovetail slider being in sliding connection in the first dovetail groove; and / or, one of the adjacent two sub-plates (71) is provided with a second dovetail groove, and the other is provided with a second dovetail slider (9), the second dovetail slider (9) being in sliding connection in the second dovetail groove.

5. Cooling device according to claim 3, characterized in that An elastic reset member (8) extending along the first direction is arranged between the end of the sub-plate (71) away from the contact membrane (1) and the shell.

6. The cooling device of claim 1, wherein The other side of the shell except the opening comprises an upper side wall (55), a lower side wall (56), a left side wall (52), a front side wall (53), and a rear side wall (54), and the upper side wall (55), the lower side wall (56), the left side wall (52), the front side wall (53), and the rear side wall (54) are connected to each other.

7. Cooling device according to claim 6, characterized in that The four sides of the contact membrane (1) are respectively connected to the upper side wall (55), the lower side wall (56), the front side wall (53), and the rear side wall (54), thereby completely shielding the right opening of the shell.

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