Liquid cooling server heat dissipation and waste heat recovery power generation system and method

Abstract

The invention discloses a liquid cooling server heat dissipation and waste heat recovery power generation system and method. Relates to the technical field of server heat dissipation and thermoelectric power generation. The heat dissipation unit comprises a condenser, a heat dissipation device and a cooling liquid pump, the condenser is arranged in the box body and above the liquid level of the cooling liquid, and the heat dissipation device is sequentially communicated with the condenser and the cooling liquid pump; the thermoelectric power generation unit comprises a thermoelectric power generation sheet group and a fan group, the hot end of the thermoelectric power generation sheet group is connected with the box body, and the fan group is arranged at the cold end of the thermoelectric power generation sheet group. The hot end of the thermoelectric power generation sheet group is heated through the cooling liquid, the cold end of the thermoelectric power generation sheet group is cooled through the fan group, and the temperature difference is formed at the cold and hot ends of the thermoelectric power generation sheet group to generate electric energy; cooling liquid steam which is heated to boil is condensed through the condenser and then flows back in the hose, and the cooling liquid in the hose is cooled through the radiator.

Description

Technical Field

[0001] The present invention relates to the technical field of server heat dissipation and thermoelectric power generation, and more specifically, to a liquid-cooled server heat dissipation and waste heat recovery power generation system and method. Background Art

[0002] Driven by the development of electronic information technology, people's demand for online resources is increasing day by day, bringing a huge energy burden to high-performance computing and data centers. In a data center, in addition to the energy consumption of electronic information devices, other energy consumption comes from cooling, lighting, and various other auxiliary devices. Among them, 40% of the energy is used for the heat dissipation of data center servers. The cooling methods for data centers include air cooling and liquid cooling. Liquid cooling technology is widely popular due to its low energy consumption, low noise, high heat dissipation efficiency, etc.

[0003] Further recycling the low-grade waste heat generated by the data center can further improve the energy utilization rate. Thermoelectric power generation technology is a new energy technology that directly converts thermal energy into electrical energy using the Seebeck effect. A thermoelectric power generation chip is an electronic device that uses thermoelectric power generation technology. When there is a temperature difference between the cold surface and the hot surface of the thermoelectric power generation chip, the p-type and n-type semiconductor thermocouple arms simultaneously drive the movement of holes and electrons, thereby generating a potential difference for power generation. The thermoelectric power generation chip has the advantages of compact structure, no moving parts, reliable performance, maintenance-free, no noise, etc., and can work stably for a long time.

[0004] Chinese Patent CN116182605A discloses a waste heat recovery and heat dissipation device for a server cabinet. This patent uses a cooling medium to absorb the heat of the server to generate a steam medium. The working medium gas inside the housing of the rotating mechanism expands after being heated by the steam medium, driving the heat dissipation structure to work and dissipating heat from the server cabinet, but the conversion efficiency is low, and the maintenance cost of the mechanical structure of the transmission device is high. Chinese Patent CN219676542U discloses a waste heat recovery system integrated with a server system. This patent uses a heat exchanger in the waste heat recovery system to collect waste heat and uses a heat-insulated coolant tank to store the waste heat for heat preservation to prevent heat from flowing into the external air, but the recovered waste heat is not effectively utilized.

[0005] Therefore, how to provide a liquid-cooled server heat dissipation and waste heat recovery power generation system with higher conversion efficiency and lower maintenance cost is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the present invention provides a liquid-cooled server heat dissipation and waste heat recovery power generation system and method, aiming to solve one of the problems in the above background art and achieve higher conversion efficiency and lower maintenance cost.

[0007] To achieve the above object, on the one hand, the present invention provides a liquid-cooled server heat dissipation and waste heat recovery power generation system, including:

[0008] A box body, the interior of the box body is filled with a coolant, the box body is provided with an opening, a box cover is provided at the opening end of the box body, and the box body is detachably connected to the box cover;

[0009] A heat dissipation unit, including a condenser, a radiator and a coolant pump. The condenser is arranged inside the box body and above the coolant liquid level. The radiator and the coolant pump are arranged outside the box body. The inlet of the radiator is connected to the outlet of the condenser through a hose, the outlet of the coolant pump is connected to the inlet of the condenser through a hose, and the inlet of the coolant pump and the outlet of the radiator are connected through a hose. The coolant vapor that is heated and boiled is condensed by the condenser and then falls back into the box body under the action of gravity, and the coolant in the hose is cooled by the radiator;

[0010] A thermoelectric power generation unit, including a thermoelectric power generation chip group and a fan group. The thermoelectric power generation chip group is arranged on the outer side of the box body away from the box cover, the hot end of the thermoelectric power generation chip group is connected to the box body, the fan group is arranged at the cold end of the thermoelectric power generation chip group, the hot end of the thermoelectric power generation chip group is heated by the coolant, and the cold end of the thermoelectric power generation chip group is cooled by the fan group. A temperature difference is formed between the hot and cold ends of the thermoelectric power generation chip group to generate electric energy.

[0011] Further, it further includes fins, the fins are arranged at the cold end of the thermoelectric power generation chip group, and the fan group is arranged facing the fins, and the fins are used to improve the cooling effect of the fan group on the cold end of the thermoelectric power generation chip group.

[0012] Further, a communication port is arranged at the top of the box body, there are two communication ports, and the hoses connected to the inlet and outlet of the condenser extend out of the box body through the two communication ports.

[0013] Further, the communication ports are arranged at the top of the box body, there are two communication ports, the outlet and inlet of the condenser are connected to two sections of the hoses, and the two hoses respectively extend out of the box body through the two communication ports.

[0014] Further, an O-ring is arranged between the box cover and the box body for sealing.

[0015] Further, a cooling fan is arranged on the radiator, the cooling fan faces the radiator, and the cooling fan is detachably connected to the radiator through bolts, and the cooling fan is used to improve the heat dissipation effect of the radiator on the coolant.

[0016] Further, it is characterized in that a thermal conductive interface material is coated between the thermoelectric power generation sheet group and both the box body and the fins.

[0017] On the other hand, the present invention provides a method for liquid-cooled server heat dissipation and waste heat recovery power generation. Using the above-mentioned liquid-cooled server heat dissipation and waste heat recovery power generation system, it includes the following steps:

[0018] Step 1: Fill the box body with a coolant. The liquid level height of the coolant is lower than the bottom of the condenser and higher than the top of the thermoelectric power generation unit.

[0019] Step 2: Turn on the coolant pump and the cooling fan. The coolant in the box body is heated and boils to generate steam, which condenses on the condenser and then flows back. The circulating coolant in the condenser absorbs heat and warms up. The coolant is driven by the coolant pump to flow into the radiator, and the cooling fan provides forced convection of the coolant to cool the circulating coolant flowing through the external radiator.

[0020] Step 3: Turn on the fan group to provide forced convection to lower the temperature of the cold end of the thermoelectric power generation sheet group, forming a temperature difference between the hot and cold ends of the thermoelectric power generation sheet group to generate electric energy.

[0021] Through the above technical solutions, compared with the prior art, the present invention discloses a liquid-cooled server heat dissipation and waste heat recovery power generation system. The hot end of the thermoelectric power generation sheet group is heated by the coolant, and the cold end of the thermoelectric power generation sheet group is cooled by the fan group. A temperature difference is formed between the hot and cold ends of the thermoelectric power generation sheet group to generate electric energy. The inside of the box body is dissipated by the loop composed of the condenser, the radiator, and the coolant pump. The condenser condenses the boiling coolant steam and then flows back in the hose, and the radiator cools the coolant in the hose. The fixed cooling fan with the radiator generates forced convection to improve the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0023] Figure 1 It is a schematic structural diagram of the liquid-cooled server heat dissipation and waste heat recovery power generation system provided by the present invention;

[0024] Figure 2 It is a schematic structural diagram of the box body provided by the present invention;

[0025] Figure 3 It is a schematic structural diagram of the cooling unit provided by the present invention;

[0026] Figure 4 Schematic structural diagram of the thermoelectric power generation unit provided by the present invention;

[0027] Figure 5 Schematic diagram of a partially closed loop of the cooling unit provided by the present invention;

[0028] Figure 6 Assembly schematic diagram of the condenser, hose and box body provided by the present invention;

[0029] Figure 7 Assembly schematic diagram of the radiator and the cooling fan provided by the present invention.

[0030] Wherein: 1 is the box body; 2 is the box cover; 3 is the heat dissipation unit; 31 is the condenser; 32 is the radiator; 33 is the coolant pump; 34 is the hose; 35 is the cooling fan; 4 is the thermoelectric power generation unit; 41 is the thermoelectric power generation chip group; 42 is the fan group; 43 is the fin; 5 is the communication port. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] See Figure 1-7 , the embodiments of the present invention disclose a liquid-cooled server heat dissipation and waste heat recovery power generation system, including:

[0033] The box body 1 is filled with coolant inside, the box body 1 is provided with an opening, the opening end of the box body 1 is provided with a box cover 2, the box body 1 and the box cover 2 are detachably connected, and the coolant is used as a heat transfer medium to dissipate heat through the coolant;

[0034] The heat dissipation unit 3 includes a condenser 31, a radiator 32 and a coolant pump 33. The condenser 31 is arranged inside the box body 1, the radiator 32 and the coolant pump 33 are arranged outside the box body 1, and the condenser 31 is arranged above the liquid level of the coolant. The radiator 32 and the coolant pump 33 are arranged outside the box body 1. The inlet of the radiator 32 is communicated with the outlet of the condenser 31 through a hose 34, the outlet of the coolant pump 33 is communicated with the inlet of the condenser 31 through a hose 34, and the inlet of the coolant pump 33 and the outlet of the radiator 32 are communicated through a hose 34. By setting up a loop composed of the condenser 31, the radiator 32 and the coolant pump 33 to dissipate heat inside the box body 1, the condenser 31 condenses the boiling coolant steam and then returns to the box body 1 under the action of gravity, and the radiator 32 cools the coolant in the hose 34;

[0035] The thermoelectric power generation unit 4 includes a thermoelectric power generation sheet group 41 and a fan group 42. The thermoelectric power generation sheet group 41 is arranged on the outer side of the box body 1 away from the box cover 2. The hot end of the thermoelectric power generation sheet group 41 is connected to the box body 1. The fan group is arranged at the cold end of the thermoelectric power generation sheet group 41. The hot end of the thermoelectric power generation sheet group 41 is heated by a coolant, and the cold end of the thermoelectric power generation sheet group 41 is cooled by the fan group 42. A temperature difference is formed between the hot and cold ends of the thermoelectric power generation sheet group 41 to generate electric energy.

[0036] In this embodiment, it further includes fins 43. The fins 43 are arranged at the cold end of the thermoelectric power generation sheet group 41. The fan group 42 is arranged facing the fins 43. The fins 43 are used to improve the cooling effect of the fan group 42 on the cold end of the thermoelectric power generation sheet group 41.

[0037] In this embodiment, a communication port 5 is arranged at the top of the box body 1. There are two communication ports 5. The hoses 34 connected to the inlet and outlet of the condenser 31 extend out of the box body 1 through the two communication ports 5.

[0038] In this embodiment, an O-ring is arranged between the box cover 2 and the box body 1 for sealing.

[0039] In this embodiment, a cooling fan 35 is arranged on the radiator 32. The cooling fan 35 faces the radiator 32. The cooling fan 35 is detachably connected to the radiator 32 by bolts. The cooling fan 35 is used to improve the heat dissipation effect of the radiator 32 on the coolant.

[0040] In this embodiment, a thermal interface material is coated between the thermoelectric power generation sheet group 41 and both the box body 1 and the fins 43.

[0041] On the other hand, the present invention provides a method for liquid-cooled server heat dissipation and waste heat recovery power generation. Using the above-mentioned liquid-cooled server heat dissipation and waste heat recovery power generation system, it includes the following steps:

[0042] Step 1: Fill the box body 1 with a coolant. The liquid level height of the coolant is lower than the bottom of the condenser 31, and the liquid level height of the coolant is higher than the top of the thermoelectric power generation unit 4.

[0043] Step 2: Turn on the coolant pump 33 and the cooling fan 35. The coolant in the box body 1 is heated and boils to generate steam, which condenses on the condenser 31 and then returns. The circulating coolant in the condenser 31 absorbs heat and warms up. The coolant is driven by the coolant pump 33 to flow into the radiator 32. The cooling fan 35 provides forced coolant convection to cool the circulating coolant flowing through the external radiator 32.

[0044] Step 3: Turn on the fan group 42 to provide forced convection to reduce the temperature of the cold end of the thermoelectric power generation sheet group 41. A temperature difference is formed between the hot and cold ends of the thermoelectric power generation sheet group 41 to generate electric energy.

[0045] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method section.

[0046] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A liquid-cooled server heat dissipation and waste heat recovery power generation system, characterized in that Comprising: A box body, the interior of the box body is filled with coolant, the box body is provided with an opening, the opening end of the box body is provided with a box cover, and the box body is detachably connected to the box cover; A heat dissipation unit, including a condenser, a radiator and a coolant pump. The condenser is arranged inside the box body and above the liquid level of the coolant. The radiator and the coolant pump are arranged outside the box body. The inlet of the radiator is communicated with the outlet of the condenser through a hose, the outlet of the coolant pump is communicated with the inlet of the condenser through a hose, and the inlet of the coolant pump is communicated with the outlet of the radiator through a hose. The coolant vapor that is heated and boiled is condensed by the condenser and then falls back into the box body under the action of gravity, and the coolant in the hose is cooled by the radiator; A thermoelectric generation unit, including a thermoelectric generation chip group and a fan group. The thermoelectric generation chip group is arranged on the outer side of the box body away from the box cover, the hot end of the thermoelectric generation chip group is connected to the box body, the fan group is arranged at the cold end of the thermoelectric generation chip group, the hot end of the thermoelectric generation chip group is heated by the coolant, the cold end of the thermoelectric generation chip group is cooled by the fan group, and a temperature difference is formed between the hot and cold ends of the thermoelectric generation chip group to generate electric energy.

2. The liquid cooling server heat dissipation and waste heat recovery power generation system according to claim 1, wherein, It further includes fins, the fins are arranged at the cold end of the thermoelectric generation chip group, and the fan group is arranged facing the fins, and the fins are used to improve the cooling effect of the fan group on the cold end of the thermoelectric generation chip group.

3. The liquid-cooled server heat dissipation and waste heat recovery power generation system according to claim 1, wherein, A communication port is arranged at the top of the box body, there are two communication ports, and the hoses communicated with the inlet and outlet of the condenser extend out of the box body through the two communication ports.

4. A liquid-cooled server heat dissipation and waste heat recovery power generation system according to claim 1, characterized in that An O-ring is arranged between the box cover and the box body for sealing.

5. A liquid-cooled server heat dissipation and waste heat recovery power generation system according to claim 1, characterized in that, A cooling fan is arranged on the radiator, the cooling fan faces the radiator, and the cooling fan is detachably connected to the radiator through bolts, and the cooling fan is used to improve the heat dissipation effect of the radiator on the coolant.

6. A liquid-cooled server heat dissipation and waste heat recovery power generation system according to claim 1, characterized in that, A thermal interface material is coated between the thermoelectric generation chip group and the box body and the fins.

7. A method for heat dissipation and waste heat recovery power generation of a liquid-cooled server, characterized in that, Using a liquid-cooled server heat dissipation and waste heat recovery power generation system according to any one of the above claims 1-6, the method includes the following steps: Step 1: Fill the box body with coolant, the liquid level height of the coolant is lower than the bottom of the condenser, and the liquid level height of the coolant is higher than the top of the thermoelectric generation unit; Step 2: Turn on the coolant pump and the cooling fan. The coolant in the box body is heated and boiled to generate steam, which condenses on the condenser and then flows back. The circulating coolant in the condenser absorbs heat and rises in temperature. The coolant is driven by the coolant pump to flow into the radiator, and the cooling fan provides forced coolant convection to cool the circulating coolant flowing through the external radiator; Step 3: Turn on the fan group to provide forced convection to lower the temperature of the cold end of the thermoelectric generation chip group, and a temperature difference is formed between the hot and cold ends of the thermoelectric generation chip group to generate electric energy.

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