Heat exchange equipment and liquid cooling system thereof

Abstract

The invention relates to the technical field of electronic equipment heat dissipation, in particular to heat exchange equipment and a liquid cooling system thereof.The heat exchange equipment comprises a fixing assembly, heat exchange plate sets and a sealing assembly, the heat exchange plate sets are arranged in the fixing assembly, and the sealing assembly is arranged between the heat exchange plate sets and on the outer ring; the liquid cooling system comprises a machine case, a cooling liquid pump, a cooling pipe set, a cooling tower and heat exchange equipment, and the machine case, the heat exchange equipment and the cooling tower are connected through the cooling pipe set. The cooling efficiency is further improved by improving the structure of the heat exchange plate set, increasing the cold water circulation speed, reducing the circulation speed of high-temperature cooling liquid and additionally arranging cooling water circulation structures inside and outside the heat exchange plate set; therefore, the problem that the required cooling effect cannot be achieved due to the fact that the heat exchange efficiency of the heat exchange equipment and the liquid cooling system thereof is reduced after multiple times of circulation is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation of electronic equipment, and in particular to a heat exchange device and a liquid cooling system thereof. Background Art

[0002] With the development of electronic equipment, the internal temperature control technology of electronic equipment has also been developed. At present, air cooling or liquid cooling is usually used to cool down servers, computers and other equipment; compared with air cooling technology, immersion liquid cooling technology that uses its own circulation to achieve cooling effect can save about 70% of electricity, achieving energy saving and environmental protection; currently, liquid cooling technology is commonly used in shell heat exchangers and plate heat exchangers. When cooling electronic equipment, plate heat exchangers can be used for liquid cooling; in plate heat exchangers, heat sources and cold sources flow through different channels, and they flow through alternately stacked metal plates. Since the temperature of the heat source is higher than that of the cold source, the heat will be transferred from the heat source through the plate to the cold source to achieve heat transfer.

[0003] Today's data center computer rooms mainly use mature air cooling technology, such as industrial air conditioning, but due to the high energy consumption of the air conditioning equipment itself, the PUE value of the data center computer room is generally high. In order to solve the heat dissipation problem of high-power IT equipment, data centers have begun to adopt liquid cooling technology. Compared with air, the thermal conductivity of liquid is much higher, so the cooling efficiency of liquid cooling technology is significantly higher than that of air cooling, which can effectively solve the heat dissipation problem of high-power IT equipment and reduce the energy consumption of the cooling system. In the data center computer room currently using liquid cooling technology, the common liquid cooling heat exchange equipment cannot quickly return to the appropriate temperature after a cycle of heat exchange, which easily leads to poor subsequent heat exchange effect; the prior art has proposed a good solution to this problem, such as the liquid cooling heat exchange equipment with patent number CN219802907U, which adjusts the air temperature inside the liquid cooling heat exchange equipment by setting a cooling component, thereby adjusting the temperature of the heat exchange component to adjust its temperature to room temperature or a preset temperature, thereby solving the problem of poor heat exchange effect caused by the inability to reasonably adjust the internal temperature of the liquid cooling heat exchange equipment in the prior art.

[0004] Although the prior art solves the problem that the internal temperature of the heat exchange device is high during the heat exchange cycle after the liquid-cooled heat exchange device with a shell performs a heat exchange once, resulting in poor heat exchange effect, the following problems still exist: when heat exchange is performed on computers and servers, the use of plate heat exchangers for immersion liquid cooling can save more electricity and have higher cooling efficiency; when the operating temperature of the chassis is high, the temperature of the electrolyte flowing into the plate heat exchanger is too high, which will cause the plates in the plate heat exchanger to heat up quickly, and the heat conductivity of air is lower than that of liquid. The cooling efficiency of air cooling is low and can only cool the outside of the plate heat exchanger, while the plates in the plate heat exchanger still cool down slowly. At this time, the cold water circulation needs to simultaneously heat exchange the plates with increased temperature and the circulating high-temperature electrolyte. Moreover, when the cold water circulation is slow, the heat exchange efficiency will be lower. If the electrolyte flows out of the plate heat exchanger too quickly, it will also lead to poor cooling effect. In addition, there is a heat concentration area at the hot coolant circulation position of the plate heat exchanger (refer to Fig.12 In the middle), this area does not overlap with the cooling water circulation position, and the heat exchange efficiency is low.

[0005] In view of the above situation, in order to overcome the above technical problems, the present invention provides a heat exchange device and a liquid cooling system thereof. Summary of the invention

[0006] The present invention provides a heat exchange device and a liquid cooling system thereof, which solve the problem that when the temperature of a chassis is high, the electrolyte transfers heat to the inside of the heat exchange device, and the circulating cooling water cannot directly absorb the heat of the high-temperature electrolyte, thereby causing low efficiency of the heat exchange device. By improving the structure of the heat exchange plate group, increasing the circulation speed of cold water, reducing the circulation speed of the high-temperature coolant, and adding a cooling water circulation structure inside and outside the heat exchange plate group, the cooling efficiency is further improved, thereby solving the problem that the heat exchange efficiency of the heat exchange device and its liquid cooling system is reduced after multiple cycles, and the required cooling effect cannot be achieved.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A heat exchange device comprises a fixing component, a heat exchange plate group and a sealing component; the heat exchange plate group comprises an outer plate, a cold plate, a hot plate and a bottom plate; the outer plate is arranged at the leftmost end, the bottom plate is arranged at the rightmost end, the cold plate and the hot plate are alternately installed between the outer plate and the bottom plate, the front of the cold plate and the back of the hot plate form a cooling water space, and the front of the hot plate and the back of the cold plate form a cooling liquid space; the sealing component is arranged between the cold plate and the hot plate; the fixing component is arranged on the outer ring of the heat exchange plate group; the coolant flows into the cooling liquid space, passes through the surface of the hot plate for a deceleration cycle and flows out of the cooling liquid space, and a part of the cooling water flows into The cooling water space contacts the back of the hot plate and then flows out of the cooling water space. The cooling water and the coolant are in contact with each other through the metal plate to exchange heat, thereby increasing the thermal conductivity and slowing down the flow rate of the high-temperature coolant. At the same time, the flow rate of the cooling water is increased. The high-temperature coolant is fully cooled before flowing out, and part of the cooling water will flow to the heat accumulation area of ​​the hot plate to cool the hot plate and the high-temperature coolant again; another part of the cooling water flows into the sealing assembly, circulates around the cold plate and the outer ring of the hot plate for one cycle, and flows out, thereby cooling the heat exchange equipment as a whole and its surrounding environment, thereby ensuring that the heat exchange efficiency of the heat exchange equipment will not decrease with the increase of working time.

[0009] Preferably, the hot plate includes a hot plate body, a cooling liquid through hole, a contact groove, a sealing installation groove and a cooling hole group; the cooling liquid through hole is opened on the four corners of the hot plate body; the contact groove is opened on the other side of the hot plate body, presenting a fishbone structure; the sealing installation groove is symmetrically opened on the front and back sides of the hot plate body; the cooling hole group is symmetrically opened above and below the right side of the hot plate body.

[0010] In the above scheme, a contact groove is provided on the back of the heat plate body and is arranged in a fishbone-shaped structure to increase the contact area between the coolant and the cooling water, so that the coolant and the cooling water are fully in contact with each other to achieve the expected cooling effect.

[0011] Preferably, the cooling hole group includes cooling inlet holes and cooling outlet holes; the aperture of the cooling inlet holes gradually decreases from the side facing the bottom plate to the side facing the outer plate; the aperture of the cooling outlet holes gradually decreases from the side facing the outer plate to the side facing the bottom plate.

[0012] In the above scheme, by setting the cooling inlet hole and the cooling outlet hole, the cooling water flows from the cooling water space to the space where the cooling hole group is located. The space is located at the edge of the high-temperature coolant inflow and outflow position, and the high-temperature coolant can be pre-cooled and secondary cooled when it flows in and out. Since the back of the middle section of the hot plate is provided with a contact groove, the contact area with the cooling water is increased, and the heat exchange time of the middle section is longer, so the heat is easily exchanged away, and the high-temperature coolant continues to flow in and out at the coolant through hole position. This position is a position where the high-temperature coolant continuously flows through, and heat is easy to accumulate. The cooling hole group is provided to cool the heat accumulation area of ​​the hot plate.

[0013] Preferably, the cold plate includes a cold plate body, a contact convex surface, a cooling water through hole and a second sealing mounting groove, wherein the cooling water through holes are provided at the four corners of the cold plate body and have a diameter equal to that of the cooling liquid through hole; the contact convex surface is provided on the front side of the cold plate body and cooperates with the contact groove; the second sealing mounting groove has the same structure as the first sealing mounting groove and is symmetrically provided on the front and back sides of the cold plate body.

[0014] In the above scheme, the surface of the cold plate is provided with a contact convex surface that cooperates with the back of the hot plate to increase the contact area between the coolant and the cooling water, and the convex surface is in a downward fishbone shape. Since the cooling water flows in a downward direction, under this structure, the contact area can be increased while facilitating the rapid flow of cooling water, so that the cooling water in the cooling water space is always maintained at a lower temperature.

[0015] Preferably, the sealing assembly includes a cold plate sealing ring, a hot plate sealing ring and a cooling sealing ring; the cold plate sealing ring is installed on a sealing installation groove, and includes a circulation sealing ring, a through-hole sealing ring and a cooling sealing ring; the circulation sealing ring is a structure with arc protrusions at the upper and lower ends; the through-hole sealing ring cooperates with the cooling water through-hole and the coolant through-hole; the cooling sealing ring is arranged between the circulation sealing ring and the through-hole sealing ring and connects the two; the hot plate sealing ring has the same structure as the cold plate sealing ring, and is installed opposite to the cold plate sealing ring; the cooling sealing ring is installed on the outer ring of the heat exchange plate group.

[0016] In the above scheme, the cold plate sealing ring and the hot plate sealing ring structure are composed of a circulation sealing ring, a through-hole sealing ring and a cooling sealing ring, so that when sealing, the coolant space and the cooling water space are separately sealed, and each interval of the through-hole seal is in an independent state, ensuring the sealing between the cooling water and the coolant, and no mixing occurs; at the same time, the cooling sealing ring is used to connect the circulation sealing ring and the through-hole sealing ring, which reduces the space occupied by the overall sealing structure, increases the available space for cooling water, improves the cooling efficiency, and also supports the through-hole sealing ring, so that it is stable in shape when in contact with high-temperature coolant for a long time and is not prone to leakage; at the same time, the cold plate sealing ring and the hot plate sealing ring are both integrated structures, which are easy to process and manufacture, and save costs.

[0017] Preferably, the cooling sealing ring includes a fixed outer ring, a water inlet through hole, a water outlet through hole, a connecting pipe and a circulation chamber; the inner ring of the fixed outer ring cooperates with the outer rings of the cold plate and the hot plate; the water inlet through hole is opened at the upper part of the fixed outer ring; the water outlet through hole is opened at the lower part of the fixed outer ring; a plurality of connecting pipes are provided, and are respectively installed on the water inlet through hole and the water outlet through hole; the circulation chamber is opened inside the fixed outer ring.

[0018] In the above scheme, a cooling sealing ring is arranged on the outer ring of the heat exchange plate group to cool the area around the heat exchange plate group to prevent the equipment and the surrounding air from being too hot, which will lead to a decrease in cooling efficiency. A fixed outer ring is arranged to be sleeved on the outer rings of the hot plate and the cold plate. At the same time, an arc groove for installing a fixed component is opened around the fixed outer ring, so that the cooling sealing ring can be stably fixed around the cold plate and the hot plate. A circulation cavity is opened inside the cavity so that cooling water can circulate after entering, thereby maintaining a low temperature inside the cavity and improving the heat exchange efficiency.

[0019] Preferably, the circulation chamber and the cooling sealing ring are in a communicating structure.

[0020] In the above scheme, since the cooling water flows from the cooling inlet hole to the cooling sealing ring position on the front side of the hot plate, and flows from the cooling outlet hole to the cooling sealing ring position on the back side of the hot plate, double-sided cooling is completed, and since the cooling sealing ring and the circulation chamber are connected, the cooling water entering the cooling sealing ring will circulate together with the cooling water in the circulation chamber.

[0021] A liquid cooling system comprises a chassis, a coolant pump, a cooling pipe group, a cooling tower and a heat exchange device; the cooling pipe group comprises a coolant pipe and a cooling water pipe; one end of the coolant pipe is connected to the chassis, and the other end is connected to the heat exchange device; the coolant pump is installed inside the coolant pipe; the cooling water pipe comprises a mainstream pipe and a branch pipe, one end of the mainstream pipe is connected to the heat exchange device, and the other end is connected to the cooling tower, one end of the branch pipe is connected to the mainstream pipe, and the other end is connected to a cooling sealing ring, cooling water flows out of the cooling tower through the mainstream pipe and the branch pipe, and flows into the cooling water space and the cooling sealing ring respectively.

[0022] Preferably, the mainstream pipeline includes a focusing channel and a pumping impeller; the focusing channel includes a main channel hole and a return channel hole; and the pumping impeller is installed in the mainstream pipeline.

[0023] In the above scheme, a pumping impeller is set to increase the cooling water circulation speed, quickly pump out the cooling water whose temperature has increased after heat exchange in the heat exchange equipment, and quickly flow the low-temperature cooling water into the heat exchange equipment to improve the heat exchange efficiency. The pumping impeller is installed horizontally so that its blades rotate to form a vortex in the flow-converging channel and gather toward the center of the flow-converging channel, and then cooperate with the pumping system at the bottom of the cooling tower, so that the concentrated water is pumped into the cooling tower and pumped out to the upper part of the cooling tower for cooling.

[0024] Preferably, the branch pipe includes an inlet pipe and a return pipe; one end of the inlet pipe is connected to the cooling water pipe, and the other end is connected to the upper part of the bottom plate; one end of the return pipe is connected to the return channel hole, and the other end is connected to the lower part of the outer plate.

[0025] In the above scheme, the water temperature at the bottom of the cooling tower is higher and the water temperature at the top is lower, so that the upper cooling water flows into the cooling sealing ring and quickly covers the entire cooling sealing ring under the action of gravity, and flows out from the bottom of the cooling sealing ring to the bottom of the cooling tower, shortening the heat exchange path and improving the cooling efficiency.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. Compared with the existing heat exchange equipment and its liquid cooling system, the present invention restricts the flow path of the high-temperature coolant in the heat exchange plate group, so that it can fully exchange heat in the heat exchange plate group and flow out after the temperature is reduced to the expected temperature. At the same time, by directing the cooling water to the vicinity of the heat plate where heat accumulation is likely to occur, on the one hand, the plate body is cooled, and on the other hand, the high-temperature coolant is pre-cooled and secondary cooled, thereby enhancing the cooling effect and improving the heat exchange efficiency of the heat exchange equipment.

[0028] 2. The present invention provides a cooling sealing ring. On the one hand, the cooling sealing ring is used to perform secondary fixation on the overall equipment to enhance the sealing and stability of the equipment under high temperature and high pressure. At the same time, the inner sealing structure is cooled by contact with the inner sealing structure, thereby ensuring the service life of the rubber seal, ensuring that it does not deform, and preventing leakage due to sealing failure. On the other hand, part of the cooling water flows into the cooling water space, and the other part flows into the cooling sealing ring to cool the temperature of the heat exchange equipment and the surrounding air, ensuring that the temperature of the heat exchange equipment and its surroundings will not increase with the increase of working time during heat exchange, resulting in a decrease in heat exchange efficiency.

[0029] 3. The present invention provides a cooling pipe group to divert cooling water to the cooling water space and the cooling sealing ring. Based on the cooling principle of the cooling tower, the cooling water pipe path is shortened and a pumping impeller is provided to increase the circulation speed of the cooling water, thereby ensuring that the cooling water in the heat exchange equipment remains at a low temperature and continuously exchanging heat with the high-temperature coolant, thereby enhancing the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the structure of the heat exchange device of the present invention;

[0033] Figure 3 An exploded view of the heat exchange plate assembly of the present invention;

[0034] Figure 4 This is a schematic diagram of the front structure of the cold plate of the present invention;

[0035] Figure 5 It is a schematic diagram of the back structure of the cold plate of the present invention;

[0036] Figure 6 It is a schematic diagram of the heat plate structure of the present invention;

[0037] Figure 7 It is a schematic diagram of the cold plate sealing ring structure of the present invention;

[0038] Figure 8 It is a schematic diagram of the structure of the cooling sealing ring of the present invention;

[0039] Fig. 9 It is a schematic diagram of the communication structure between the circulation chamber and the cooling sealing ring of the present invention;

[0040] Fig.10 It is a schematic diagram of the structure of the liquid cooling system of the present invention;

[0041] Fig.11 It is a schematic diagram of the flow direction of cooling water and coolant of the present invention;

[0042] Fig.12 It is a schematic diagram of the heat concentration area of ​​the existing plate heat exchanger;

[0043] In the figure: a, cooling water space; b, cooling liquid space; c, heat exchange equipment; 1, fixing assembly; 2, heat exchange plate group; 21, outer plate; 22, cold plate; 221, cold plate body; 222, contact convex surface; 223, cooling water through hole; 224, sealing installation groove 2; 23, hot plate; 231, hot plate body; 232, cooling liquid through hole; 233, contact groove; 234, sealing installation groove 1; 235, cooling hole group; 2351, cooling inlet hole; 2352, cooling outlet hole; 24, bottom plate; 3, sealing assembly; 31, cold plate sealing ring; 311, circulation sealing ring; 312 , through-hole sealing ring; 313, cooling sealing ring; 32, hot plate sealing ring; 33, cooling sealing ring; 331, fixed outer ring; 332, water inlet through hole; 333, water outlet through hole; 334, connecting pipe; 335, circulation chamber; 4, chassis; 5, coolant pump; 6, cooling pipe group; 61, coolant pipe; 62, cooling water pipe; 621, mainstream pipe; 6211, converging channel; 62111, main channel hole; 62112, reflux channel hole; 6212, pumping impeller; 622, tributary pipe; 6221, inlet pipe; 6222, reflux pipe; 7, cooling tower. DETAILED DESCRIPTION

[0044] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0045] See also Figures 1 to 11 The present invention provides a heat exchange device and a liquid cooling system thereof, and the technical solution is as follows:

[0046] As a specific embodiment of the present invention, refer to Figure 1 , Figure 2 and Figure 3 A heat exchange device includes a fixed component 1, a heat exchange plate group 2 and a sealing component 3; the heat exchange plate group 2 includes an outer plate 21, a cold plate 22, a hot plate 23 and a bottom plate 24; the outer plate 21 is arranged at the leftmost end, the bottom plate 24 is arranged at the rightmost end, the cold plate 22 and the hot plate 23 are alternately installed between the outer plate 21 and the bottom plate 24, the front of the cold plate 22 and the back of the hot plate 23 form a cooling water space a, and the front of the hot plate 23 and the back of the cold plate 22 form a cooling liquid space b; the sealing component 3 is arranged between the cold plate 22 and the hot plate 23; the fixed component 1 is arranged on the outer ring of the heat exchange plate group 2; the coolant flows into the cooling liquid space b, passes through the surface of the hot plate 23 for a deceleration cycle and flows out of the cooling liquid space b, Part of the cooling water flows into the cooling water space a, contacts the back of the heat plate 23, and then flows out of the cooling water space a. The cooling water and the coolant are in contact with each other through the metal plate to exchange heat, thereby increasing the thermal conductivity and slowing down the flow rate of the high-temperature coolant. At the same time, the flow rate of the cooling water is increased, and the high-temperature coolant is fully cooled before flowing out. Part of the cooling water will flow to the heat plate 23 where heat is easily accumulated to cool the heat plate 23 and the high-temperature coolant again. Another part of the cooling water flows into the sealing assembly 3, circulates around the outer circle of the cold plate 22 and the hot plate 23, and flows out to cool the entire heat exchange plate group 2 and its surrounding environment, thereby ensuring that the heat exchange efficiency of the heat exchange plate group 2 will not decrease with the increase in working time.

[0047] As a specific embodiment of the present invention, refer to Figure 4 and Figure 5The hot plate 23 includes a hot plate body 231, a cooling liquid through hole 232, a contact groove 233, a sealing installation groove 234 and a cooling hole group 235; the cooling liquid through hole 232 is opened on the four corners of the cold plate body 221; the contact groove 233 is opened on the other side of the hot plate body 231, and is a fishbone-shaped structure; the contact groove 233 is opened on the back of the hot plate body 231 and is arranged in a fishbone-shaped structure, so that the contact area between the coolant and the cooling water is increased, so that the coolant and the cooling water are fully in contact to achieve the expected cooling effect; at the same time, the overall thickness of the hot plate body 231 can be adjusted according to the pressure of the coolant and the cooling water in the equipment, which is set to 3mm here, reducing the thickness of the hot plate body 231, thereby improving the efficiency of heat exchange; the sealing installation groove 234 is symmetrically opened on the front and back sides of the hot plate body 231; the cooling hole group 235 is symmetrically opened above and below the right side of the hot plate body 231. The cooling hole group 235 includes a cooling inlet hole 2351 and a cooling outlet hole 2352; the aperture of the cooling inlet hole 2351 gradually decreases from the side facing the bottom plate 24 to the side facing the outer plate 21; the aperture of the cooling outlet hole 2352 gradually decreases from the side facing the outer plate 21 to the side facing the bottom plate 24. The cooling inlet hole 2351 and the cooling outlet hole 2352 are arranged to allow cooling water to flow from the cooling water space a to the space where the cooling hole group 235 is located. The space is located at the edge of the high-temperature coolant inflow position and the outflow position, respectively, and pre-cooling and secondary cooling can be performed when the high-temperature coolant flows in and out. This position is also where the heat of the hot plate 23 is easily accumulated. Since the hot plate 2 A contact groove 233 is provided on the back of the middle section to increase the contact area with the cooling water. The heat exchange time in the middle section is longer, so the heat is easily exchanged away. The high-temperature coolant continues to flow in and out of this position, and the heat is easily accumulated. The cooling hole group 235 is provided to cool the heat plate 23 where the heat is easily accumulated. The aperture of the cooling inlet hole 2351 gradually decreases from the side facing the bottom plate 24 to the side facing the outer plate 21, so that the cooling water can flow into the cooling inlet hole 2351 under pressure, and it is convenient to flow out under pressure from the cooling outlet hole 2352, so that the space forms a rapid flow cycle, ensuring that the cooling water in the space is always low-temperature cooling water.

[0048] As a specific embodiment of the present invention, refer to Figure 6The cold plate 22 includes a cold plate body 221, a contact convex surface 222, a cooling water through hole 223 and a sealing installation groove 224. The thickness of the cold plate body 221 is set to 3mm, which is the same as the hot plate body 231. Considering the thermal conductivity and cost issues, the cold plate body 221 and the hot plate body 231 use aluminum as the plate material; the cooling water through hole 223 is opened at the four corners of the cold plate body 221, and the diameter is equal to the cooling liquid through hole 232; the contact convex surface 222 is set on the front of the cold plate body 221, and is in contact with the contact groove 23 3; the surface of the cold plate 22 is provided with a contact convex surface 222 that cooperates with the back of the hot plate 23 to increase the contact area between the coolant and the cooling water, and the convex surface is in a downward fishbone shape. Since the cooling water flows in a downward direction, under this structure, the contact area can be increased while facilitating the rapid flow of cooling water, so that the cooling water in the cooling water space a is always maintained at a lower temperature; the sealing installation groove 224 has the same structure as the sealing installation groove 1 234, and is symmetrically opened on the front and back sides of the cold plate body 221.

[0049] As a specific embodiment of the present invention, refer to Figure 7 and Figure 8The sealing assembly 3 includes a cold plate sealing ring 31, a hot plate sealing ring 32 and a cooling sealing ring 33; the cold plate sealing ring 31 is installed on the sealing installation groove 234, and includes a circulation sealing ring 311, a through-hole sealing ring 312 and a cooling sealing ring 313; the circulation sealing ring 311 is a convex structure with arcs at both ends; the through-hole sealing ring 312 cooperates with the cooling water through-hole 223 and the cooling liquid through-hole 232; the cooling sealing ring 313 is arranged between the circulation sealing ring 311 and the through-hole sealing ring 312 and connects the two; the hot plate sealing ring 32 has the same structure as the cold plate sealing ring 31, and is installed opposite to the cold plate sealing ring 31; the cold plate sealing ring 31 and the hot plate sealing ring 32 are composed of the circulation sealing ring 311, the through-hole sealing ring 312 and the cooling sealing ring 313 at the same time, so that when sealing, the cooling water space a and the cold plate space a are The cooling liquid space b is sealed separately, and the seal of each interval through hole is in an independent state, which ensures the sealing between the cooling water and the cooling liquid and prevents mixing; at the same time, the cooling sealing ring 313 is used to connect the circulation sealing ring 311 and the through hole sealing ring 312, which reduces the space occupied by the overall sealing structure, increases the available space for cooling water, improves the cooling efficiency, and also supports the through hole sealing ring 312, so that it has a stable shape when in contact with high-temperature coolant for a long time and is not prone to leakage. The sealing structure material here is silicone rubber, which can maintain its shape and elasticity in a long-term high-temperature working environment, and enhance the sealing performance and service life of the equipment; at the same time, the cold plate sealing ring 31 and the hot plate sealing ring 32 are both integrated structures, which are easy to process and manufacture, and save costs. The cooling sealing ring 33 is installed on the outer ring of the heat exchange plate group 2. The cooling seal ring 33 includes a fixed outer ring 331, a water inlet through hole 332, a water outlet through hole 333, a connecting pipe 334 and a circulation chamber 335; the inner ring of the fixed outer ring 331 cooperates with the outer rings of the cold plate 22 and the hot plate 23; the water inlet through hole 332 is opened at the upper part of the fixed outer ring 331; the water outlet through hole 333 is opened at the lower part of the fixed outer ring 331; a plurality of connecting pipes 334 are provided, and are respectively installed on the water inlet through hole 332 and the water outlet through hole 333; a plurality of cooling seal rings 33 are connected in series through the connecting pipe 334, so as to facilitate the installation of the heat exchange plate group 2; the circulation chamber 335 is opened at The interior of the fixed outer ring 331; a cooling sealing ring 33 is set on the outer ring of the heat exchange plate group 2 to cool the area around the heat exchange plate group 2 to prevent the equipment and the surrounding air from being too hot, which will reduce the cooling efficiency. The fixed outer ring 331 is sleeved on the outer rings of the hot plate 23 and the cold plate 22. At the same time, an arc groove for the installation of the fixed component 1 is opened around the fixed outer ring 331, so that the cooling sealing ring 33 can be stably fixed around the cold plate 22 and the hot plate 23. A circulation chamber 335 is opened inside the chamber so that cooling water can circulate after entering, so that the internal temperature is kept low and the heat exchange efficiency is improved.

[0050] As a specific embodiment of the present invention, refer to Fig. 9The circulation chamber 335 and the cooling seal ring 313 are in a communication structure. Since the cooling water will flow from the cooling inlet hole 2351 to the cooling seal ring 313 position on the front of the hot plate 23, and flow from the cooling outlet hole 2352 to the cooling seal ring 313 position on the back of the hot plate 23, double-sided cooling is completed, and since the cooling seal ring 313 and the circulation chamber 335 are in a communication structure, the cooling water entering the cooling seal ring 313 will circulate together with the cooling water in the circulation chamber 335.

[0051] As a specific embodiment of the present invention, refer to Fig.10 A liquid cooling system includes a chassis 4, a coolant pump 5, a cooling pipe group 6, a cooling tower 7 and a heat exchange device c; the cooling pipe group 6 includes a coolant pipe 61 and a cooling water pipe 62; one end of the coolant pipe 61 is connected to the chassis 4, and the other end is connected to the heat exchange device c; the coolant pump 5 is installed inside the coolant pipe 61; the cooling water pipe 62 includes a mainstream pipe 621 and a branch pipe 622, one end of the mainstream pipe 621 is connected to the heat exchange device c, and one end is connected to the cooling tower 7, one end of the branch pipe 622 is connected to the mainstream pipe 621, and one end is connected to the cooling sealing ring 33, the cooling water flows out of the cooling tower 7 through the mainstream pipe 621 and the branch pipe 622, and flows into the cooling water space a and the cooling sealing ring 33 respectively.

[0052] As a specific embodiment of the present invention, refer to Fig.11 , the mainstream pipeline 621 includes a focusing channel 6211 and a pumping impeller 6212; the focusing channel 6211 includes a main channel hole 62111 and a return channel hole 62112; the pumping impeller 6212 is installed in the mainstream pipeline 621; by setting the pumping impeller 6212, the cooling water circulation speed is increased, the cooling water with a higher temperature after heat exchange in the heat exchange device c is quickly pumped out, and the low-temperature cooling water quickly flows into the heat exchange device c, thereby improving the heat exchange efficiency. The pumping impeller 6212 is installed horizontally, so that its blades rotate to form a vortex in the focusing channel 6211, and after gathering to the center of the focusing channel 6211, it cooperates with the pumping system at the bottom of the cooling tower 7, so that the concentrated water is cooled Tower 7 is drawn in and the cooling water is drawn out to the upper part of the cooling tower 7; the branch pipe 622 includes an inlet pipe 6221 and a return pipe 6222; one end of the inlet pipe 6221 is connected to the cooling water pipe 62, and the other end is connected to the upper part of the bottom plate 24; one end of the return pipe 6222 is connected to the return channel hole 62112, and the other end is connected to the lower part of the outer plate 21; the water temperature at the lower part of the cooling tower 7 is higher, and the water temperature at the upper part is lower, so that the upper cooling water flows into the cooling sealing ring 33, and under the action of gravity, it quickly covers the entire cooling sealing ring 33, and flows out from the lower part of the cooling sealing ring 33 to the lower part of the cooling tower 7, shortening the heat exchange path, improving the cooling efficiency, and increasing the circulation speed of the entire liquid cooling system, thereby improving the heat exchange efficiency.

[0053] Working process: the coolant pump 5 draws the high-temperature coolant in the chassis 4 into the heat exchange device c, and flows into the coolant space b through the coolant through hole 232. The cooling water flows from the cooling tower 7 into the cooling water space a and the cooling sealing ring 33. The cooling water space a and the coolant space b are arranged alternately, so that the cooling water in the cooling water space a and the high-temperature coolant in the coolant space b can be heat exchanged. After the heat exchange is completed, the coolant flows back to the chassis 4 through the coolant pipe 61, and the cooling water flows back to the cooling tower 7 through the reflux pipe 6222 and the focusing channel 6211.

[0054] The coolant pump 5 is turned on to extract the high-temperature coolant in the upper layer of the chassis 4 into the heat exchange device c. The high-temperature coolant flows through the coolant pipe 61 to the upper coolant through hole 232, and flows out from the upper coolant through hole 232 to the coolant space b, filling the coolant space b and gathering at the lower coolant through hole 232 to flow out; at the same time, the cooling water flows out from the upper layer of the cooling tower 7 through the mainstream pipe 621 to the cooling water through hole 223, and flows out through the cooling water through hole 223 to the cooling water space a, passes through the contact convex surface 222 and the contact concave surface 224, and flows out to the cooling water space a. The groove 233 performs heat exchange with the high-temperature coolant in the coolant space b, and a part of the coolant flowing into the coolant space a flows through the cooling inlet hole 2351 to the space formed by the inner wall of the cooling sealing ring 313 and the front of the heat plate body 231, thereby cooling the part of the heat plate body 231 that is prone to heat accumulation, and at the same time, pre-cooling the high-temperature coolant that has just flowed in, and performing secondary cooling on the coolant that is about to flow out of the coolant space b; the coolant flowing in through the cooling inlet hole 2351 flows out from the cooling outlet hole 2352 to the back of the heat plate body 231, thereby improving the cooling effect and Under the connection structure between the temperature sealing ring 313 and the circulation chamber 335, the cooling water in the circulation chamber 335 is continuously circulated to ensure that the cooling water in the heat exchange device c is continuously in a low temperature state; a part of the cooling water passing through the mainstream pipe 621 flows into the cooling sealing ring 33 through the inlet pipe 6221, and flows into each cooling sealing ring 33 through the connecting pipe 334 to cool the heat exchange plate group 2. When the cooling sealing ring 33 is filled with cooling water, it starts to circulate, and the cooling water that completes the heat exchange flows out through the return pipe 6222 below, and is connected to the cooling water space a. The cooling water flowing out flows into the focusing channel 6211, and is pumped by the pumping impeller 6212 to increase the cooling water circulation speed, so that the cooling water forms a vortex in the focusing channel 6211. Under the action of the pumping system at the bottom of the cooling tower 7, the cooling water that has completed the heat exchange flows to the lower part of the cooling tower 7. After the action of the cooling tower 7, the cooling water that has completed the heat exchange is cooled and pumped to the top of the cooling tower 7, and then flows out from the upper cooling water pipe 62 to complete the circulation; after the coolant in the coolant space b completes the heat exchange, it returns to the chassis 4 through the lower coolant pipe 61.

[0055] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected, and the scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. A heat exchange device, comprising a fixing assembly (1), characterized in that: The invention also comprises a heat exchange plate group (2) and a sealing assembly (3); the heat exchange plate group (2) comprises an outer plate (21), a cold plate (22), a hot plate (23) and a bottom plate (24); the outer plate (21) is arranged at the leftmost end, the bottom plate (24) is arranged at the rightmost end, the cold plate (22) and the hot plate (23) are alternately installed between the outer plate (21) and the bottom plate (24), the front side of the cold plate (22) and the back side of the hot plate (23) form a cooling water space (a), and the front side of the hot plate (23) and the back side of the cold plate (22) form a cooling liquid space (b). The sealing component (3) is arranged between the cold plate (22) and the hot plate (23); the fixing component (1) is arranged on the outer ring of the heat exchange plate group (2); the coolant flows into the coolant space (b), passes through the surface of the hot plate (23), circulates once after deceleration, and flows out of the coolant space (b); a part of the coolant flows into the cooling water space (a), contacts the back of the hot plate (23), and flows out of the cooling water space (a); another part of the coolant flows into the sealing component (3), circulates once on the outer rings of the cold plate (22) and the hot plate (23), and flows out.

2. A heat exchange device according to claim 1, characterized in that: The hot plate (23) comprises a hot plate body (231), a cooling liquid through hole (232), a contact groove (233), a sealing installation groove (234) and a cooling hole group (235); the cooling liquid through hole (232) is provided at four corners of the hot plate body (231); the contact groove (233) is provided at the other side of the hot plate body (231), and the contact groove (233) is in a fishbone-shaped structure; the sealing installation groove (234) is symmetrically provided at the front and back sides of the hot plate body (231); and the cooling hole group (235) is symmetrically provided at the upper and lower sides of the right side of the hot plate body (231).

3. A heat exchange device according to claim 2, characterized in that: The cooling hole group (235) comprises a cooling inlet hole (2351) and a cooling outlet hole (2352); the aperture of the cooling inlet hole (2351) gradually decreases from the side facing the bottom plate (24) to the side facing the outer plate (21); and the aperture of the cooling outlet hole (2352) gradually decreases from the side facing the outer plate (21) to the side facing the bottom plate (24).

4. A heat exchange device according to claim 2, characterized in that: The cold plate (22) comprises a cold plate body (221), a contact convex surface (222), a cooling water through hole (223) and a second sealing installation groove (224); the cooling water through hole (223) is provided at four corners of the cold plate body (221); the contact convex surface (222) is provided on the front side of the cold plate body (221); the second sealing installation groove (224) has the same structure as the first sealing installation groove (234), and is symmetrically provided on the front and back sides of the cold plate body (221).

5. A heat exchange device according to claim 4, characterized in that: The sealing assembly (3) comprises a cold plate sealing ring (31), a hot plate sealing ring (32) and a cooling sealing ring (33); the cold plate sealing ring (31) is installed on a sealing installation groove (234) and comprises a circulation sealing ring (311), a through-hole sealing ring (312) and a cooling sealing ring (313); the circulation sealing ring (311) is a circular arc convex structure with symmetric upper and lower ends; the through-hole sealing ring (312) cooperates with the cooling water through-hole (223) and the cooling liquid through-hole (232); the cooling sealing ring (313) is arranged between the circulation sealing ring (311) and the through-hole sealing ring (312) and connects the two; the hot plate sealing ring (32) has the same structure as the cold plate sealing ring (31) and is installed opposite to the cold plate sealing ring (31); the cooling sealing ring (33) is installed on the outer ring of the heat exchange plate group (2).

6. A heat exchange device according to claim 5, characterized in that: The cooling sealing ring (33) comprises a fixed outer ring (331), a water inlet through hole (332), a water outlet through hole (333), a connecting pipe (334) and a circulation chamber (335); the inner ring of the fixed outer ring (331) is connected to the outer rings of the cold plate (22) and the hot plate (23) by interference fit; the water inlet through hole (332) is provided at the upper part of the fixed outer ring (331); the water outlet through hole (333) is provided at the lower part of the fixed outer ring (331); a plurality of connecting pipes (334) are provided and are respectively installed on the water inlet through hole (332) and the water outlet through hole (333); and the circulation chamber (335) is provided inside the fixed outer ring (331).

7. A heat exchange device according to claim 6, characterized in that: The circulation chamber (335) and the temperature-reducing sealing ring (313) are in a communicating structure.

8. A liquid cooling system, comprising the heat exchange device (c) according to any one of claims 1 to 7, characterized in that: It also includes a chassis (4), a coolant pump (5), a cooling pipe group (6) and a cooling tower (7); the cooling pipe group (6) includes a coolant pipe (61) and a cooling water pipe (62); one end of the coolant pipe (61) is connected to the chassis (4), and the other end is connected to the heat exchange device (c); the coolant pump (5) is installed inside the coolant pipe (61); the cooling water pipe (62) includes a mainstream pipe (621) and a branch pipe (622); one end of the mainstream pipe (621) is connected to the heat exchange device (c), and the other end is connected to the cooling tower (7); one end of the branch pipe (622) is connected to the mainstream pipe (621), and the other end is connected to the cooling seal ring (33); the cooling water flows out of the cooling tower (7) through the mainstream pipe (621) and the branch pipe (622), and flows into the cooling water space (a) and the cooling seal ring (33) respectively.

9. A liquid cooling system according to claim 8, characterized in that: The mainstream pipeline (621) includes a focusing channel (6211) and a pumping impeller (6212); the focusing channel (6211) includes a main channel hole (62111) and a return channel hole (62112); the pumping impeller (6212) is installed in the mainstream pipeline (621).

10. A liquid cooling system according to claim 9, characterized in that: The branch pipe (622) comprises an inlet pipe (6221) and a return pipe (6222); one end of the inlet pipe (6221) is connected to the cooling water pipe (62), and the other end is connected to the upper part of the bottom plate (24); one end of the return pipe (6222) is connected to the return channel hole (62112), and the other end is connected to the lower part of the outer plate (21).

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