High performance water mixing buffer tank

Abstract

The utility model discloses a kind of high-performance water mixing buffer tanks, belong to water mixing tank technical field, the water mixing buffer tank including for water mixing liquid cooling tank body, the tank body outer side is provided with water mixing flow guide part and hot water input pipe, the water mixing flow guide part with the hot water input pipe are communicated with the hollow inside of the tank body, the water mixing flow guide part is set to near the hot water input pipe, and the included angle between the water mixing flow guide part and the hot water input pipe is 90 degrees vertically;Several water mixing pipes for outputting water mixing are provided on the water mixing flow guide part, control valve is provided in the water mixing pipe, and several water mixing pipes are longitudinally equidistantly arranged on the tank body outer side;By vertically arranged hot water input pipe and water mixing flow guide part, forced hot water is formed along tank body inner wall spiral flow path, prolongs the contact time with cooling liquid, and longitudinally equidistantly distributed water mixing pipe and the setting of differentiating pipe diameter, solve the problem that traditional buffer tank mixes unevenly, response lag.

Description

Technical Field

[0001] This utility model relates to the field of mixing tank technology, specifically to a high-performance mixing buffer tank. Background Technology

[0002] Mixing buffer tanks are key components in fluid heat exchange systems, primarily used to balance temperature and flow fluctuations. They are commonly found in high-density data centers, central air conditioning, and underfloor heating systems. Their core structure typically consists of a tank, a flow guiding device, and flow regulation components, achieving fluid homogenization through physical mixing or mechanical assistance. In high-density data center cooling systems, the mixing buffer tank is connected in series between the terminal servers and the cooling unit (CDU), forming a three-tiered architecture of "terminal-buffer tank-cooling unit." Essentially, it mitigates the problem of sudden temperature rises in the coolant caused by instantaneous high loads on servers by dynamically mixing the return water from the terminal servers with the water stored in the buffer tank, preventing frequent start-ups or overload operation of the cooling unit due to thermal shock.

[0003] The core functions of a mixing buffer tank are threefold: temperature buffering, pressure stabilization, and system decoupling. In terms of temperature control, when sudden changes in terminal load trigger high-temperature return water, the fluid inside the tank achieves heat exchange through natural mixing or a flow-guiding structure, suppressing temperature fluctuations of the coolant entering the CDU and ensuring the thermal load adaptability of the cooling source equipment. The pressure stabilization function absorbs instantaneous pressure shocks through the elasticity of the tank's volume, reducing the risk of pipe vibration and seal failure. By isolating the terminal circulation and the cooling source circulation, the buffer tank allows for independent flow regulation of both, optimizing system energy efficiency and simplifying control logic. This is particularly suitable for multi-zone cooling scenarios requiring frequent start-stop operations or significant load differences.

[0004] While mixing buffer tanks are indispensable in thermal management, their mixing efficiency still faces technical bottlenecks. Insufficient mixing uniformity is the primary issue. Traditional designs rely on natural convection between hot water and coolant inside the tank, which can easily lead to stratification due to differences in flow rates. Under extreme loads, insufficient mixing can result in ineffective cooling and affect the normal operation of servers. Furthermore, the limited dynamic response capability of traditional mixing buffer tanks also restricts their performance. Fixed volume and flow channel design are difficult to adapt to sudden load changes, especially when computing power demands surge, the limitations of tank capacity and fluid paths may slow down the heat exchange rate. Utility Model Content

[0005] To address the problem of insufficient mixing efficiency in current mixing buffer tanks mentioned in the background section, a high-performance mixing buffer tank is proposed. The technical solution adopted by this utility model is as follows:

[0006] A high-performance mixing buffer tank includes a tank body for cooling the mixing liquid. A mixing guide section and a hot water inlet pipe are provided on one side of the outer periphery of the tank body. Both the mixing guide section and the hot water inlet pipe are connected to the hollow interior of the tank body. The mixing guide section is located near the hot water inlet pipe, and the angle between the mixing guide section and the hot water inlet pipe is 90 degrees, forming a perpendicular shape. A plurality of mixing pipes for outputting the mixed water are provided on the mixing guide section. Each mixing pipe is equipped with a control valve, and the plurality of mixing pipes are longitudinally and equidistantly arranged on the outer periphery of the tank body.

[0007] Preferably, the mixing pipe on the mixing guide section includes a first mixing pipe, a second mixing pipe, and a third mixing pipe. The first mixing pipe is located on the outer periphery of the tank near the bottom, the second mixing pipe is located on the outer periphery of the tank in the middle, and the third mixing pipe is located on the outer periphery of the tank near the top.

[0008] Preferably, the mixing guide section further includes a mixing guide pipe that gathers and connects the first mixing pipe, the second mixing pipe and the third mixing pipe, and the top of the mixing guide pipe has a guide pipe outlet.

[0009] Preferably, the hot water inlet pipe on the tank body is at the same horizontal plane as the first mixing pipe.

[0010] Preferably, the diameters of the mixing pipes are arranged in such a way that the first mixing pipe is smaller than the second mixing pipe, which is smaller than the third mixing pipe.

[0011] Preferably, both the mixing guide section and the hot water input pipe are tangentially arranged to the outer surface of the tank.

[0012] Preferably, the can body is composed of a straight cylinder, an upper seal and a lower seal to form a closed space inside the can body. The upper seal is fixedly installed at the top of the hollow straight cylinder, and the lower seal is fixedly installed at the bottom of the straight cylinder.

[0013] Preferably, a plurality of support legs are fixedly provided on the outer periphery of the bottom of the lower seal, and anti-slip pads are fixedly provided on the bottom of the support legs.

[0014] Preferably, a pressure relief valve for controlling the internal pressure of the tank is fixedly provided on the outer periphery of the top of the upper seal, and the pressure relief valve is connected to the inside of the tank.

[0015] Preferably, a plurality of temperature sensors are fixedly installed on the inner wall of the tank, with the temperature sensors corresponding to the opening of the mixing pipe on the inner wall of the tank.

[0016] The beneficial effects of this high-performance mixing buffer tank are as follows:

[0017] 1. The vertically arranged hot water inlet pipe and mixing guide force the hot water to form a spiral flow path along the inner wall of the tank, extending the contact time with the coolant and achieving sufficient heat exchange between the high-temperature hot water and the low-temperature coolant. This prevents the cold source equipment from overloading due to instantaneous high-temperature shocks. It has the advantages of enhancing mixing efficiency through kinetic energy conversion, reducing the frequency of cold source start-up and shutdown, and improving system stability.

[0018] 2. By using longitudinally equidistant mixing pipes with differentiated pipe diameters, and by independently adjusting the mixing pipes at different locations through control valves, a temperature gradient is formed by utilizing the difference in distance from the hot water input pipe (the mixing pipes farther from the input pipe output low-temperature water, while those closer output medium-temperature water), which meets the multi-level temperature buffering requirements. It also has the advantages of dynamic temperature graded control, adapting to sudden changes in terminal load scenarios, and reducing the adjustment pressure of cold source equipment. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the mixing buffer tank in an embodiment of the high-performance mixing buffer tank of this utility model;

[0020] Figure 2 This is a schematic diagram of the main structure of the mixing buffer tank in an embodiment of this utility model;

[0021] Figure 3 This is a cross-sectional view of the mixing buffer tank in an embodiment of the present invention.

[0022] Figure 4 This is a top view of the mixing buffer tank in an embodiment of the present invention.

[0023] The components include: 1. Tank body; 2. Mixing water guide section; 3. Temperature sensor; 101. Straight cylinder; 102. Upper seal; 103. Lower seal; 104. Hot water input pipe; 105. Support legs; 106. Anti-slip pads; 107. Pressure relief valve; 201. Mixing water guide pipe; 202. First mixing water pipe; 203. Second mixing water pipe; 204. Third mixing water pipe; 205. Guide pipe outlet. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] like Figure 1-4As shown, a high-performance mixing buffer tank includes a tank body 1 for cooling the mixing liquid. A mixing guide section 2 and a hot water input pipe 104 are provided on one side of the outer periphery of the tank body 1. Both the mixing guide section 2 and the hot water input pipe 104 are connected to the hollow interior of the tank body 1. The mixing guide section 2 is located near the hot water input pipe 104, and the angle between the mixing guide section 2 and the hot water input pipe 104 is 90 degrees, forming a perpendicular shape. A plurality of mixing pipes for outputting mixed water are provided on the mixing guide section 2. Each mixing pipe is equipped with a control valve, and the plurality of mixing pipes are longitudinally and equidistantly arranged on the outer periphery of the tank body 1.

[0026] In this embodiment, a mixing guide section 2 with an included angle of 90 degrees and a hot water inlet pipe 104 are provided on the outer periphery of the tank body 1. Several mixing pipes on the mixing guide section 2 are longitudinally and equidistantly arranged on the outer periphery of the tank body 1, and each mixing pipe is equipped with a control valve. This allows the hot water to be cooled to enter the tank body 1 through the hot water inlet pipe 104 and flow inside the tank body 1 under the action of water flow, thereby mixing with the coolant inside the tank body 1 to lower the temperature of the hot water (this coolant is provided by other components of the mixing buffer tank accessory, not shown in the figure). Because the mixing guide section 2 is located on the outer periphery of the tank body 1 near the hot water inlet pipe 104, the mixed water is fully mixed inside the tank body 1 before entering the mixing guide section 2 for output, ensuring that the hot water in the tank body 1 is properly cooled. The tank 1 has sufficient space and time for mixing. The kinetic energy provided by the hot water input pipe 104 when hot water is input and the kinetic energy provided by the cooled mixed water output from the mixing guide section 2 provide a sufficient energy basis for the mixed water inside the tank 1, ensuring that the mixed water inside the tank 1 has enough energy for gravity-flow agitation and mixing. Several mixing pipes are longitudinally and equidistantly arranged on the outer periphery of the tank 1. The connection and closure of the mixing pipes are controlled by the control valve, thereby realizing the outflow of mixed water from different positions inside the tank 1. Due to the different spacing between the several mixing pipes and the hot water input pipe 104, the temperature of the mixed water output from the mixing pipe far from the hot water input pipe 104 is lower than that of the mixing water output from the mixing pipe close to the hot water input pipe 104, thus meeting different temperature buffering requirements.

[0027] In one embodiment, the mixing pipe on the mixing guide section 2 includes a first mixing pipe 202, a second mixing pipe 203, and a third mixing pipe 204. The first mixing pipe 202 is located on the outer periphery of the tank 1 near the bottom, the second mixing pipe 203 is located on the outer periphery of the tank 1 in the middle, and the third mixing pipe 204 is located on the outer periphery of the tank 1 near the top.

[0028] In this embodiment, by arranging the first mixing pipe 202, the second mixing pipe 203, and the third mixing pipe 204 at equal intervals in the longitudinal direction, the spacing between the different mixing pipes and the hot water input pipe 104 is differentiated. This ensures that even when the hot water temperature input to the mixing buffer tank is different under different operating conditions, the temperature of the mixing body output by the mixing guide section 2 still meets the actual required temperature range.

[0029] In one embodiment, the water mixing guide section 2 further includes a water mixing guide pipe 201 that gathers and connects the first water mixing pipe 202, the second water mixing pipe 203 and the third water mixing pipe 204, and the top of the water mixing guide pipe 201 is provided with a guide pipe outlet 205.

[0030] In this embodiment, the mixing guide section 2 further includes a mixing guide pipe 201 that collects the outputs of the first mixing pipe 202, the second mixing pipe 203 and the third mixing pipe 204, and the top of the mixing guide pipe 201 is provided with a guide pipe outlet 205. The mixing water flowing out of each mixing pipe is collected through the mixing guide pipe 201 and then output for circulation cooling.

[0031] In one embodiment, the hot water inlet pipe 104 provided on the tank 1 is at the same horizontal plane as the first mixing pipe 202.

[0032] In this embodiment, the hot water inlet pipe 104 is located near the bottom of the tank 1, thereby satisfying the differentiated spacing requirements between the hot water pipe and the first mixing pipe 202, the second mixing pipe 203, and the third mixing pipe 204.

[0033] In one embodiment, the diameters of the mixing pipes are such that the first mixing pipe 202 is smaller than the second mixing pipe 203, which is smaller than the third mixing pipe 204.

[0034] In this embodiment, the diameter of the first mixing pipe 202 is smaller than that of the second mixing pipe 203, which is smaller than that of the third mixing pipe 204, to ensure that the cooling effect of the output mixing body can reach the optimal level.

[0035] In one embodiment, both the mixing guide section 2 and the hot water input pipe 104 are tangentially disposed to the outer surface of the tank body 1.

[0036] In this embodiment, by tangentially arranging the mixing guide 2 and the hot water input pipe 104 on the outer periphery of the tank body 1, and by arranging the mixing guide 2 near the hot water input pipe 104, it is ensured that the hot water input into the hot water input pipe 104 flows along the inner wall of the tank body 1 for at least one round before being output, thus ensuring that the hot water has sufficient time to mix and cool.

[0037] In one embodiment, the tank body 1 is composed of a straight cylinder 101, an upper seal 102 and a lower seal 103 to form a closed space inside the tank body 1. The upper seal 102 is fixedly installed at the top of the hollow straight cylinder 101, and the lower seal 103 is fixedly installed at the bottom of the straight cylinder 101.

[0038] In this embodiment, both the upper seal 102 and the lower seal 103 are hemispherical and inwardly fastened at both ends of the straight cylinder 101. The hemispherical shape prevents the mixed water inside the tank 1 from losing too much kinetic energy during flow, ensuring that the mixed water has sufficient kinetic energy for mixing and cooling.

[0039] In one embodiment, a plurality of support legs 105 are fixedly provided on the outer periphery of the bottom of the lower seal 103, and anti-slip pads 106 are fixedly provided on the bottom of the support legs 105.

[0040] In this embodiment, the bottom of the lower seal 103 is provided with a support bracket 105 and an anti-slip pad 106 to support and fix the tank 1, so as to avoid the loss caused by the collapse of the tank 1.

[0041] In one embodiment, a pressure relief valve 107 for controlling the internal pressure of the tank 1 is fixedly provided on the outer periphery of the top of the upper seal 102, and the pressure relief valve 107 is connected to the inside of the tank 1.

[0042] In this embodiment, the pressure relief valve 107 is used to maintain the pressure inside the tank 1 to prevent the tank 1 from rupturing and being damaged due to increased internal pressure caused by the large flow rate of the hot water inlet pipe 104.

[0043] In one embodiment, a plurality of temperature sensors 3 are fixedly installed on the inner wall of the tank 1, and the temperature sensors 3 are correspondingly installed on the inner wall of the tank 1 near the opening of the mixing pipe.

[0044] In this embodiment, a number of temperature sensors 3 are provided on the inner wall of the tank 1. In particular, the temperature sensors 3 provided adjacent to the mixing pipe are used to measure the actual temperature of the mixed water output from the mixing guide section 2, so as to ensure that the output temperature of the mixed water meets the actual requirements.

[0045] The specific working principle of this high-performance mixing buffer tank is as follows:

[0046] The working principle of this high-performance mixing buffer tank is based on dynamic heat exchange and fluid kinetic energy regulation to achieve efficient water mixing. After high-temperature hot water is vertically injected into the tank 1 through the hot water inlet pipe 104, the water flow forms a spiral flow trajectory along the inner wall of the tank 1 due to the tangential structure between the tank 1 and the mixing guide 2, which prolongs the contact time with the coolant in the tank. Heat transfer is achieved through natural convection and turbulence. The high-temperature hot water gradually releases heat and homogenizes with the low-temperature coolant during the rotation process. At the same time, the kinetic energy injected through the hot water inlet pipe 104 drives the fluid in the tank to generate self-flowing agitation, forming a continuous heat exchange driving force to ensure the dynamic balance of the mixing process. The mixed water is output through longitudinally equidistant mixing pipes. Due to differences in spacing and gradually changing diameters between these pipes and the hot water inlet pipe 104, a temperature gradient is created. Pipes farther from the inlet pipe have a longer mixing path and longer contact time, resulting in lower-temperature mixed water, while pipes closer to the inlet pipe output medium-temperature mixed water. By independently controlling the opening and closing of valves on each mixing pipe, the output water temperature can be precisely adjusted to meet multi-level buffering requirements. The internal pressure of tank 1 is regulated in real-time by a pressure relief valve 107 to prevent overpressure risks caused by instantaneous high flow rates. Temperature sensor 3 continuously monitors the outlet temperature of the mixing pipes, forming a closed-loop feedback mechanism to ensure the output water temperature remains stable within a preset range. This design, through fluid path optimization and kinetic energy conversion, solves the problems of uneven mixing and delayed response in traditional buffer tanks. Especially in high-density data center cooling scenarios, it can effectively mitigate the impact of sudden load changes on the cooling source equipment, ensuring system energy efficiency and stability.

[0047] The present invention and its embodiments have been described above. This description is not restrictive. The accompanying drawings are only one embodiment of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A high-performance mixing buffer tank, characterized in that: The system includes a tank (1) for mixing and cooling water. A mixing guide (2) and a hot water input pipe (104) are provided on one side of the outer periphery of the tank (1). The mixing guide (2) and the hot water input pipe (104) are both connected to the hollow interior of the tank (1). The mixing guide (2) is located near the hot water input pipe (104), and the angle between the mixing guide (2) and the hot water input pipe (104) is 90 degrees, which is perpendicular to each other. A plurality of mixing pipes for outputting mixed water are provided on the mixing guide (2). Each mixing pipe is equipped with a control valve, and the plurality of mixing pipes are longitudinally and equidistantly arranged on the outer periphery of the tank (1).

2. The high-performance mixing buffer tank according to claim 1, characterized in that: The mixing pipe on the mixing guide section (2) includes a first mixing pipe (202), a second mixing pipe (203) and a third mixing pipe (204). The first mixing pipe (202) is located on the outer periphery of the tank (1) near the bottom. The second mixing pipe (203) is located on the outer periphery of the tank (1) in the middle. The third mixing pipe (204) is located on the outer periphery of the tank (1) near the top.

3. A high-performance mixing buffer tank according to claim 2, characterized in that: The mixing guide section (2) further includes a mixing guide pipe (201) that gathers and connects the first mixing pipe (202), the second mixing pipe (203) and the third mixing pipe (204), and the mixing guide pipe (201) has a guide pipe outlet (205) at the top.

4. A high-performance mixing buffer tank according to claim 3, characterized in that: The hot water input pipe (104) installed on the tank (1) is at the same level as the first mixing pipe (202).

5. A high-performance mixing buffer tank according to claim 4, characterized in that: The diameters of the mixing pipes are such that the first mixing pipe (202) is smaller than the second mixing pipe (203) and the third mixing pipe (204).

6. A high-performance mixing buffer tank according to claim 1, characterized in that: Both the mixing guide section (2) and the hot water input pipe (104) are tangentially arranged to the outer surface of the tank (1).

7. A high-performance mixing buffer tank according to claim 1, characterized in that: The tank (1) is composed of a straight cylinder (101), an upper seal (102) and a lower seal (103) to form a closed space inside the tank (1). The upper seal (102) is fixedly installed on the top of the hollow straight cylinder (101), and the lower seal (103) is fixedly installed on the bottom of the straight cylinder (101).

8. A high-performance mixing buffer tank according to claim 7, characterized in that: The lower seal (103) is fixedly provided with a plurality of support legs (105) on the outer periphery of its bottom, and the support legs (105) are fixedly provided with anti-slip pads (106) on their bottoms.

9. A high-performance mixing buffer tank according to claim 8, characterized in that: The upper seal (102) is fixedly provided with a pressure relief valve (107) for controlling the internal pressure of the tank (1) and the pressure relief valve (107) is connected to the inside of the tank (1).

10. A high-performance mixing buffer tank according to claim 1, characterized in that: A number of temperature sensors (3) are fixedly installed on the inner wall of the tank (1), and the temperature sensors (3) are correspondingly installed on the inner wall of the tank (1) near the opening of the mixing pipe.

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