Air-water cooling and heat storage integrated heat dissipation device and heat dissipation method

Abstract

The invention relates to the technical field of liquid cooling heat dissipation, in particular to an air-water cooling and heat storage integrated heat dissipation device and heat dissipation method.The air-water cooling and heat storage integrated heat dissipation device comprises a cooling module and an emergency module, and the emergency module comprises an energy storage unit and an emergency water pump; the cooling module is used for cooling the cooling liquid flowing through the load; when the cooling module breaks down, the input end and the output end of the cooling module are closed, the emergency water pump is opened, and cooling liquid flowing through the load is cooled through the emergency water pump and the energy storage unit; the emergency module is added in the heat dissipation device, the energy storage unit in the emergency module can absorb redundant cooling capacity when the temperature of the cooling liquid is low, after the cooling module breaks down, circulation of the cooling liquid can be maintained through the emergency water pump, and the cooling capacity stored in the energy storage unit can be used for continuously cooling the load; the risk of equipment failure caused by the heat dissipation problem is greatly reduced, the reliability and the stability of equipment operation are improved, and the economic loss and the service influence caused by equipment shutdown are reduced.

Description

Technical Field

[0001] The present invention relates to the field of liquid cooling technology, and in particular to a heat dissipation device and a heat dissipation method integrating air-water cooling and heat storage. Background Art

[0002] At present, high-power chips and data centers and other equipment mostly use liquid cooling for heat dissipation. For the liquid cooling system under the water-cooled condenser, it mainly relies on external seawater or fresh water to realize the external output of system heat, and there is a risk of loss of system function after water outage. On the other hand, when the liquid cooling source water pump fails, there is also a risk of system liquid supply failure. With the extensive use of domestically produced chips, instantaneous excessive power consumption occurs from time to time, and the failure of the cooling system caused by water outage will seriously affect the heat dissipation of related equipment, which can easily cause damage to related equipment.

[0003] In view of this, overcoming the defects of the prior art is an urgent problem to be solved in the field of this technology. Summary of the invention

[0004] The technical problem to be solved by the present invention is how to improve the reliability of the liquid cooling system and solve the system cooling problem under extreme conditions such as system failure.

[0005] The present invention adopts the following technical solution:

[0006] In a first aspect, a heat dissipation device integrating air-water cooling and heat storage is provided, comprising: a cooling module 1 and an emergency module 2, wherein the emergency module 2 comprises an energy storage unit 20 and an emergency water pump 21;

[0007] The output end of the cooling module 1 is connected to the input end of the energy storage unit 20, the output end of the energy storage unit 20 is connected to one end of the pipeline flowing through the load, and the other end of the pipeline flowing through the load is connected to the input end of the cooling module 1; one end of the emergency water pump 21 is connected to the input end of the energy storage unit 20, and the other end of the emergency water pump 21 is connected to the other end of the pipeline flowing through the load;

[0008] The cooling module 1 is used to cool the coolant flowing through the load;

[0009] When the cooling module 1 fails, the input and output ends of the cooling module 1 are closed, the emergency water pump 21 is turned on, and the coolant flowing through the load is circulated and cooled through the emergency water pump 21 and the energy storage unit 20 .

[0010] Preferably, the energy storage unit 20 includes a heat exchange cold plate 200, a heat transfer fin 201, a plurality of energy storage materials 202 and a cover plate 203; the energy storage materials 202 are sequentially arranged on both sides of the heat exchange cold plate 200; the heat transfer fin 201 is arranged on the heat exchange cold plate 200 and is located between every two energy storage materials 202; the cover plate 203 covers the energy storage material 202;

[0011] The input end of the heat exchange cold plate 200 is connected to the output end of the cooling module 1, and the output end of the heat exchange cold plate 200 is connected to one end of a pipeline flowing through the load; the heat exchange cold plate 200 and the heat transfer fins 201 are used to transfer heat in the coolant to the energy storage material 202;

[0012] When the load thermal power consumption is lower than or equal to a preset threshold, the energy storage unit 20 is used to store excess cold in the coolant; when the load thermal power consumption is greater than the preset threshold, the energy storage unit 20 is used to absorb heat in the coolant.

[0013] Preferably, a temperature sensor 204 is provided on each energy storage material 202, and the temperature sensor 204 is used to monitor the temperature of the corresponding energy storage material 202;

[0014] The control system is used to receive the temperature of the energy storage material 202 monitored by the temperature sensor 204, and if it is monitored that the temperature of the energy storage material 202 continues to decrease, and the difference between the temperature of the energy storage material 202 and the temperature of the coolant is less than a preset threshold, the working state of the cooling module 1 or the flow rate of the coolant is adjusted;

[0015] If it is monitored that the temperature of the energy storage material 202 continues to rise, the control system evaluates how long the emergency heat dissipation can be maintained based on the temperature monitored by the temperature sensor 204 and takes emergency measures.

[0016] Preferably, the cooling module 1 comprises a circulation unit 10, and the circulation unit 10 comprises at least one circulation water pump 100 and at least one circulation ball valve 101;

[0017] The circulating ball valve 101 is arranged between the output end of the circulating water pump 100 and the input end of the energy storage unit 20, and the input end of the circulating water pump 100 is connected to the other end of the pipeline flowing through the load; by opening the circulating ball valve 101 and the corresponding circulating water pump 100, the coolant circulates in the pipeline.

[0018] Preferably, the cooling module 1 further comprises an external water cooling unit 11, and the external water cooling unit 11 comprises a plate heat exchanger 110 and an external water pump 111; the external water pump 111 is arranged in a liquid supply tank, and the output end of the external water pump 111 is connected to the input end of the plate heat exchanger 110, and the output end of the plate heat exchanger 110 is connected to the liquid supply tank;

[0019] The pipeline between the other end of the pipeline flowing through the load and the circulating water pump 100 flows through the plate heat exchanger 110 , so that the coolant flowing through the load is cooled by the plate heat exchanger 110 .

[0020] Preferably, the external water cooling unit 11 further includes a tubular heat exchanger 112, the output end of the external water pump 111 is connected to the input end of the tubular heat exchanger 112, and the output end of the tubular heat exchanger 112 is connected to the input end of the plate heat exchanger 110;

[0021] The cooling module 1 further includes a refrigeration unit 12, and the refrigeration unit 12 includes an evaporator 120 and a condenser 121; the liquid outlet of the evaporator 120 is connected to the input end of the condenser 121, and the pipeline of the output end of the condenser 121 flows through the tubular heat exchanger 112 and then is connected to the liquid inlet end of the evaporator 120;

[0022] The pipeline between the other end of the pipeline flowing through the load and the circulating water pump 100 also flows through the evaporator 120;

[0023] The evaporator 120 is provided with liquid refrigerant. When the coolant from the load flows through the evaporator 120, the liquid refrigerant in the evaporator 120 absorbs the heat of the coolant and becomes a gaseous refrigerant. The condenser 121 is used to liquefy the gaseous refrigerant and cool the liquefied refrigerant through the tubular heat exchanger 112. The liquefied and cooled liquid refrigerant returns to the evaporator 120 for circulation.

[0024] Preferably, the refrigeration unit 12 further includes an air cooler 122, the input end of the air cooler 122 is connected to the output end of the condenser 121, and the output end of the air cooler 122 is connected to the liquid inlet end of the evaporator 120;

[0025] When it is monitored that the temperature of the refrigerant flowing back to the evaporator 120 is greater than or equal to the threshold temperature, the liquefied refrigerant is cooled by the air cooler 122 , and the cooled refrigerant flows back to the evaporator 120 .

[0026] Preferably, the cooling module 1 further comprises a three-way valve 13, a first port of the three-way valve 13 is connected to the other end of the pipeline flowing through the load, a second port of the three-way valve 13 is connected to the input end of the circulating water pump 100, and a third port of the three-way valve 13 is connected to the pipeline flowing through the evaporator 120;

[0027] When the temperature of the coolant flowing through the load is lower than a preset temperature, the first port and the second port of the three-way valve 13 are connected to cool the coolant through the external water cooling unit 11;

[0028] When the temperature of the coolant flowing through the load is higher than or equal to the preset temperature, the second port of the three-way valve 13 is closed, and the first port and the third port of the three-way valve 13 are connected to cool the coolant through the refrigeration unit 12 .

[0029] In a second aspect, a heat dissipation method integrating air-water cooling and heat storage is provided, the heat dissipation method being applicable to the heat dissipation device integrating air-water cooling and heat storage as described in the first aspect, the heat dissipation method comprising:

[0030] Cooling the coolant flowing through the load by the cooling module 1;

[0031] When the cooling module 1 fails, the input and output ends of the cooling module 1 are closed, the emergency water pump 21 is turned on, and the coolant flowing through the load is circulated and cooled through the emergency water pump 21 and the energy storage unit 20 .

[0032] Preferably, the cooling module 1 includes a three-way valve 13, an external water cooling unit 11 and a refrigeration unit 12;

[0033] The cooling module 1 cools down the coolant flowing through the load, including:

[0034] When the temperature of the coolant flowing through the load is lower than a preset temperature, the first port and the second port of the three-way valve 13 are connected to cool the coolant through the external water cooling unit 11;

[0035] When the temperature of the coolant flowing through the load is higher than or equal to the preset temperature, the second port of the three-way valve 13 is closed, and the first port and the third port of the three-way valve 13 are connected to cool the coolant through the refrigeration unit 12 .

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] The present invention adds an emergency module 2 to the heat dissipation device. The energy storage unit 20 in the emergency module 2 can absorb excess cold when the coolant temperature is low. After a failure of the cooling module 1, not only can the emergency water pump 21 maintain the circulation of the coolant, but the cold stored in the energy storage unit 20 can also be used to continuously cool the load, thereby greatly reducing the risk of equipment failure due to heat dissipation problems, improving the reliability and stability of equipment operation, and reducing economic losses and business impacts caused by equipment downtime. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It is a structural schematic diagram of a heat dissipation device integrating air-water cooling and heat storage provided by an embodiment of the present invention;

[0040] Figure 2 is a structural schematic diagram of an energy storage unit provided by an embodiment of the present invention;

[0041] Figure 3 is a schematic structural diagram of a circulation unit provided by an embodiment of the present invention;

[0042] Figure 4 It is a specific structural schematic diagram of a heat dissipation device integrating air-water cooling and heat storage provided by an embodiment of the present invention;

[0043] Figure 5 It is a flow chart of a heat dissipation method integrating air-water cooling and heat storage provided in an embodiment of the present invention.

[0044] In all drawings, the same reference numerals refer to the same structure, wherein:

[0045] Cooling module 1, circulation unit 10, circulation water pump 100, circulation ball valve 101, external water cooling unit 11, plate heat exchanger 110, external water pump 111, tubular heat exchanger 112, refrigeration unit 12, evaporator 120, condenser 121, air cooler 122, three-way valve 13, emergency module 2, energy storage unit 20, heat exchange cold plate 200, heat transfer fins 201, energy storage material 202, cover plate 203, temperature sensor 204, emergency water pump 21. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0047] Unless the context requires otherwise, throughout the specification and claims, the term "including" is to be interpreted as open inclusion, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner, that is, although they may be carried in the embodiments or examples of the above terms due to reasons such as the order and position of appearance, it is not limited to that they can be carried in combination by one embodiment or example.

[0048] In the description of the present invention, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, the meaning of "multiple" is two or more. In addition, for example, the same type of nouns may be described as two independent individuals by adding "A" and "B" at the end. In this case, the corresponding features defined as "A" and "B" are only used to distinguish the same type of individuals for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.

[0049] When describing some embodiments, the expressions "coupling", "coupling" and "connection" and their derivatives may be used. For example, when describing some embodiments, the term "connection" may be used to indicate that two or more components are in direct physical or electrical contact with each other. For another example, when describing some embodiments, the term "coupling" may be used to indicate that two or more components are in direct physical or electrical contact. However, the terms "connection" or "coupling" may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other, such as "optical path coupling", "wireless connection", etc. The embodiments disclosed herein are not necessarily limited to the contents of the present invention.

[0050] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0051] Embodiment 1:

[0052] In traditional heat dissipation devices that only have a single cooling function, once the cooling system fails, it can only rely on manual emergency repairs or the equipment is shut down to wait for repairs. During the repair period, the equipment is likely to be damaged due to poor heat dissipation, resulting in serious consequences such as production interruption and data loss.

[0053] At present, with the extensive use of domestically produced chips, instantaneous excessive power consumption often occurs. Failure of the heat dissipation system will seriously affect the heat dissipation of related equipment and more easily cause damage to related equipment. In order to solve the above problems, this embodiment provides a heat dissipation device that integrates air-water cooling and heat storage, such as Figure 1 As shown, it includes: a cooling module 1 and an emergency module 2, the emergency module 2 includes an energy storage unit 20 and an emergency water pump 21; the output end of the cooling module 1 is connected to the input end of the energy storage unit 20, the output end of the energy storage unit 20 is connected to one end of the pipeline flowing through the load, and the other end of the pipeline flowing through the load is connected to the input end of the cooling module 1; one end of the emergency water pump 21 is connected to the input end of the energy storage unit 20, and the other end of the emergency water pump 21 is connected to the other end of the pipeline flowing through the load; the cooling module 1 is used to cool the coolant flowing through the load; when the cooling module 1 fails, the input and output ends of the cooling module 1 are closed, the emergency water pump 21 is opened, and the coolant flowing through the load is circulated and cooled through the emergency water pump 21 and the energy storage unit 20.

[0054] Among them, when the heat dissipation device operates normally, the cooling module 1 continuously cools down the coolant that has absorbed heat flowing out of the load, restores it to a suitable low temperature state, and then sends it back to the load for the next round of heat absorption cycle. In this process, the energy storage unit 20 in the emergency module 2 will make full use of its own heat storage characteristics to absorb and store excess cold when the coolant temperature is relatively low (for example, when it has just been cooled by the cooling module 1). Once the cooling module 1 fails and cannot cool down the coolant normally, the input and output ends of the cooling module 1 are closed (by setting ball valve A and ball valve B at the input and output ends of the cooling module 1 respectively), and then the emergency water pump 21 is turned on. Correspondingly, a ball valve C is provided at the front end of the emergency water pump 21, and the ball valve C is used to control the circulation of the loop where the emergency water pump 21 is located. The emergency water pump 21 will drive the coolant to circulate in the closed loop formed by the energy storage unit 20 and the pipeline flowing through the load. Since the energy storage unit 20 has previously stored a certain amount of cold energy, when the coolant circulates through the energy storage unit 20, the cold energy is released, thereby cooling the coolant. This ensures that the load can still be effectively cooled in an emergency situation, maintains the normal working state of the load, and avoids equipment damage due to insufficient heat dissipation.

[0055] In one embodiment, the energy storage unit 20 has multiple functions in the heat dissipation device: absorbing cold when the load is low power, releasing cold when the load is high power, and cooperating with the emergency water pump 21 for emergency heat dissipation after the cooling module 1 fails. Among them, releasing cold when the load is high power and cooperating with the emergency water pump 21 for emergency heat dissipation after the cooling module 1 fails can be performed simultaneously or separately, that is, the cold can be released after the cooling module 1 fails and the emergency water pump 21 can be cooperated for emergency heat dissipation, or the cooling module 1 can release cold in the normal working state to relieve the working pressure of the cooling module 1 and reduce energy consumption, etc. For specific descriptions, please refer to the following embodiments.

[0056] In order to absorb the cold in the coolant in advance and release the cold when the system needs it, in one embodiment, the specific structure of the energy storage unit 20 is described below. Figure 1 and Figure 2As shown, the energy storage unit 20 includes a heat exchange cold plate 200, a heat transfer fin 201, a plurality of energy storage materials 202 and a cover plate 203; the energy storage materials 202 are sequentially arranged on both sides of the heat exchange cold plate 200; the heat transfer fin 201 is arranged on the heat exchange cold plate 200 and is located between every two energy storage materials 202; the cover plate 203 covers the energy storage material 202; the input end of the heat exchange cold plate 200 is connected to the output end of the cooling module 1, and the output end of the heat exchange cold plate 200 is connected to one end of the pipeline flowing through the load; the heat exchange cold plate 200 and the heat transfer fin 201 are used to transfer the heat in the coolant to the energy storage material 202; when the load thermal power consumption is lower than or equal to the preset threshold, the energy storage unit 20 is used to store the excess cold in the coolant; when the load thermal power consumption is greater than the preset threshold, the energy storage unit 20 is used to absorb the heat in the coolant.

[0057] First, from a structural point of view, the heat exchange cold plate 200 is a key component for heat transfer, and its input end is connected to the output end of the cooling module 1, so that the coolant output from the cooling module 1 can flow into the heat exchange cold plate 200. When the coolant flows through the heat exchange cold plate 200, since the heat exchange cold plate 200 has good thermal conductivity, the heat in the coolant begins to be transferred to the heat exchange cold plate 200. The heat transfer fins 201 provided on the heat exchange cold plate 200 further enhance the heat conduction effect. The presence of the heat transfer fins 201 increases the heat exchange area, so that the heat in the heat exchange cold plate 200 can be transferred to the energy storage material 202 more quickly and fully.

[0058] The energy storage material 202 has specific thermophysical properties and can absorb and store cold. The cover plate 203 covering the energy storage material 202 plays a protective role, preventing external factors from interfering with the energy storage material 202, and ensuring that it can stably perform the function of heat storage. In one embodiment, the energy storage material 202 can be water or eutectic salt. Under different load thermal power consumption conditions, the working mode of the energy storage unit 20 is also different. When the load thermal power consumption is lower than or equal to the preset threshold, it means that the heat generated by the load at this time is relatively small, and the temperature of the coolant after cooling by the cooling module 1 may be too low, and there is excess cold. At this time, the energy storage unit 20 will play its function of storing cold, and the excess cold in the coolant will be transferred to the energy storage material 202 for storage through the heat exchange cold plate 200, the heat transfer fin 201 and other components, so that the temperature of the coolant can be maintained at a more suitable level, avoiding the adverse effects of the coolant temperature on the entire heat dissipation system and the load.

[0059] When the thermal power consumption of the load is greater than the preset threshold, the large amount of heat generated by the load will cause the coolant to absorb more heat, resulting in a trend of increasing the coolant temperature. In this case, the cold previously stored in the energy storage unit 20 will come into play. Through the reverse heat transfer effect of the heat exchange cold plate 200, the heat transfer fins 201 and other components, the cold stored in the energy storage material 202 is transferred back to the coolant, thereby ensuring the stability of the coolant temperature, so that the heat dissipation device can continue to effectively dissipate heat for the load and maintain the normal operation of the load.

[0060] For example, some high-precision electronic chips are more sensitive to temperature changes, and too much cold energy may cause the chip performance to deteriorate. By storing excess cold energy in the energy storage unit 20, the coolant temperature can be maintained in a more suitable range to ensure the normal operation of the chip. When the device is in a high-load operation state, such as when the server cluster is processing a large number of data tasks, the load thermal power consumption is greater than the preset threshold. At this time, the cold energy stored in the energy storage unit 20 can ensure the stability of the coolant temperature. This can effectively prevent the coolant temperature from being too high and causing the device to overheat, thereby ensuring that the server cluster can continuously and stably process data tasks, and avoid serious consequences such as system crashes and data loss due to heat dissipation problems.

[0061] In one embodiment, referring to Figure 2 , a temperature sensor 204 is provided on each energy storage material 202, and the temperature sensor 204 is used to monitor the temperature of the corresponding energy storage material 202. The control system is used to receive the temperature of the energy storage material 202 monitored by the temperature sensor 204, and if it is monitored that the temperature of the energy storage material 202 continues to decrease, and the difference between the temperature of the energy storage material 202 and the temperature of the coolant is less than a preset threshold, the working state of the cooling module 1 or the flow rate of the coolant is adjusted; if it is monitored that the temperature of the energy storage material 202 continues to rise, the control system evaluates the time that the emergency heat dissipation can be maintained according to the temperature monitored by the temperature sensor 204, and takes emergency measures.

[0062] Among them, a temperature sensor 204 is set on each energy storage material 202, one of the main purposes of which is to achieve accurate monitoring of the internal temperature of the energy storage unit 20. During the normal operation of the heat dissipation device, the temperature information of the energy storage material 202 can be obtained in real time through the temperature sensor 204. The temperature information can be fed back to the control system of the entire heat dissipation system. For example, when the energy storage unit 20 is storing cold, the control system can determine the progress and status of the cold storage based on the data of the temperature sensor 204. If the temperature sensor 204 shows that the temperature of the energy storage material 202 has dropped to a temperature close to that of the coolant, it means that the cold storage may be close to the saturation state, and the control system can adjust the working state of the cooling module 1 or parameters such as the flow rate of the coolant accordingly to avoid excessive cooling and energy waste.

[0063] In the emergency situation where the cooling module 1 fails, since the energy storage unit 20 needs to use the stored cold to provide heat dissipation guarantee for the load, the temperature sensor 204 can help determine the remaining cold in the energy storage material 202. For example, if the temperature sensor 204 detects that the temperature of the energy storage material 202 rises rapidly, this means that the cold in the energy storage material 202 is being released rapidly, which may be due to excessive heat consumption of the load or too long emergency heat dissipation time. At this time, the control system can evaluate the time that the emergency heat dissipation can be maintained based on the data of the temperature sensor 204, and can take some emergency measures, such as reducing the power of the load (if feasible) or sounding an alarm to remind the operator to perform emergency maintenance, so as to ensure that effective measures can be taken to protect the load equipment before the cold of the energy storage material 202 is exhausted.

[0064] From the perspective of long-term operation, the temperature data of the energy storage material 202 recorded by the temperature sensor 204 can be used to evaluate the performance of the heat dissipation device. By analyzing these temperature data, the working efficiency of the energy storage unit 20 under different load conditions can be understood.

[0065] In one embodiment, Figure 3 As shown, the cooling module 1 includes a circulation unit 10, and the circulation unit 10 includes at least one circulation water pump 100 and at least one circulation ball valve 101; the circulation ball valve 101 is arranged between the output end of the circulation water pump 100 and the input end of the energy storage unit 20, and the input end of the circulation water pump 100 is connected to the other end of the pipeline flowing through the load; by opening the circulation ball valve 101 and the corresponding circulation water pump 100, the coolant circulates in the pipeline.

[0066] The circulating water pump 100 serves as a power source for the circulation of the coolant, and its input end is connected to the other end of the pipeline flowing through the load. When the load is running, the coolant will flow out of the pipeline flowing through the load and enter the input end of the circulating water pump 100. After the circulating water pump 100 is powered on and started, a certain pressure will be generated, causing the coolant to be sucked in from its input end, and through the action of the impeller and other components inside the water pump, the coolant is pushed out from the output end at a certain pressure and flow rate.

[0067] The circulation ball valve 101 controls the flow direction of the coolant. When the circulation ball valve 101 is in the open state, the coolant pushed out from the output end of the circulation water pump 100 can smoothly pass through the circulation ball valve 101 and then flow to the input end of the energy storage unit 20. During normal heat dissipation operation, by reasonably opening the corresponding circulation ball valve 101 and starting the corresponding circulation water pump 100, a complete coolant circulation path can be established. The coolant flows out from the load, is pressurized and changes the flow direction by the circulation water pump 100, and then smoothly enters the energy storage unit 20 through the control of the circulation ball valve 101. After heat exchange and other operations (such as transferring heat to the energy storage material 202, etc.) are performed in the energy storage unit 20, it will return to the load along the corresponding path, thereby completing a round of coolant circulation and achieving continuous heat dissipation of the load.

[0068] In one embodiment, by adjusting the opening of the circulating ball valve 101 and selecting to start different numbers or different powers of circulating water pumps 100, the flow rate and flow velocity of the coolant can be flexibly controlled. Multiple pairs of circulating water pumps 100 and circulating ball valves 101 can be provided. Figure 3 Taking two pairs as an example, one is used and the other is used as a backup to prevent redundancy and reduce power consumption and cost.

[0069] For example, when the load heat power consumption is large, the opening of the circulation ball valve 101 can be appropriately increased and the circulating water pump 100 with a larger power can be started, so that the coolant can circulate in the system at a faster speed and a larger flow rate, thereby more efficiently taking away the heat generated by the load and ensuring the heat dissipation effect; conversely, when the load heat power consumption is small, the opening of the circulation ball valve 101 can be correspondingly reduced and a circulating water pump 100 with a smaller power can be selected, which can not only meet the heat dissipation requirements, but also save energy to a certain extent. More specific settings and startup methods are not described in detail in this embodiment.

[0070] This embodiment includes two cooling modes for the cooling liquid flowing through the load, namely, an external water cooling mode and a refrigeration mode. Next, the structures in the two modes and their respective working states will be specifically described.

[0071] Among them, in the external water cooling mode: in order to cool the coolant in the circulation pipeline, in one embodiment, Figure 4As shown, the cooling module 1 also includes an external water cooling unit 11, and the external water cooling unit 11 includes a plate heat exchanger 110 and an external water pump 111; the external water pump 111 is arranged in a liquid supply tank (not shown in the figure), and the output end of the external water pump 111 is connected to the input end of the plate heat exchanger 110, and the output end of the plate heat exchanger 110 is connected to the liquid supply tank; the pipeline between the other end of the pipeline flowing through the load and the circulating water pump 100 flows through the plate heat exchanger 110, so as to cool the coolant flowing through the load through the plate heat exchanger 110.

[0072] Among them, the external water pump 111 is used as the power source of the entire external water cooling unit 11 and is arranged in the liquid supply pool. When the external water pump 111 is started, external water (usually ordinary water as a cooling medium) is extracted from the liquid supply pool and pushed to the input end of the plate heat exchanger 110 at a certain pressure. The liquid supply pool can be replaced with sea water or river water. The plate heat exchanger 110 contains many separated channels inside, so that different fluids (referring to the extracted external water and the coolant flowing through the load) can exchange heat without mixing with each other.

[0073] When the external water is pushed from the external water pump 111 and enters the input end of the plate heat exchanger 110, it will flow in a specific channel inside the plate heat exchanger 110. At the same time, the part of the coolant flowing through the load pipeline between it and the circulating water pump 100 will also flow into another set of channels of the plate heat exchanger 110. Since the two fluids are closely adjacent to each other in the plate heat exchanger 110 but do not mix with each other, there will be heat transfer between them. Normally, the temperature of the external water is relatively low (because it comes from the liquid supply pool, and new external water is constantly added to maintain a relatively low temperature state), while the coolant flowing through the load has a higher temperature after absorbing the heat generated by the load. According to the principle of heat transfer, heat will be transferred from the high-temperature coolant to the low-temperature external water. In the plate heat exchanger 110, the coolant transfers its own heat to the external water by fully exchanging heat with the external water, thereby reducing its own temperature.

[0074] After the heat exchange is completed, the external water flows out from the output end of the plate heat exchanger 110 with the heat absorbed from the coolant and returns to the liquid supply pool. The cooled coolant flows out from the other outlet of the plate heat exchanger 110, continues to flow along the circulation pipeline, and enters the subsequent links such as the circulating water pump 100, so as to participate in the entire heat dissipation cycle again and continue to dissipate heat for the load.

[0075] In one embodiment, by reasonably adjusting the power of the external water pump 111, the flow rate and flow velocity of the external water can be controlled, thereby affecting the efficiency of heat exchange in the plate heat exchanger 110. For example, when the load heat power consumption is large and the temperature of the coolant rises rapidly, the power of the external water pump 111 can be appropriately increased to increase the flow rate and flow velocity of the external water, so that heat exchange can be performed more quickly and fully in the plate heat exchanger 110, and the temperature of the coolant can be reduced more efficiently; conversely, when the load heat power consumption is small and the temperature of the coolant rises less, the power of the external water pump 111 can be appropriately reduced to save energy while ensuring the cooling effect of the coolant.

[0076] In the cooling mode: when the external water cooling unit 11 cannot meet the cooling demand of the coolant flowing through the load (specifically, it can be determined by detecting the temperature of the coolant after flowing through the external water cooling unit 11), this embodiment also proposes another cooling mode. In one embodiment, referring to Figure 4 The external water cooling unit 11 also includes a tubular heat exchanger 112 , the output end of the external water pump 111 is connected to the input end of the tubular heat exchanger 112 , and the output end of the tubular heat exchanger 112 is connected to the input end of the plate heat exchanger 110 .

[0077] The cooling module 1 also includes a refrigeration unit 12, which includes an evaporator 120 and a condenser 121; the liquid outlet of the evaporator 120 is connected to the input end of the condenser 121, and the pipeline of the output end of the condenser 121 flows through the tubular heat exchanger 112 and is connected to the liquid inlet end of the evaporator 120; the pipeline between the other end of the pipeline flowing through the load and the circulating water pump 100 also flows through the evaporator 120; the evaporator 120 is provided with a liquid refrigerant, and when the coolant from the load flows through the evaporator 120, the liquid refrigerant in the evaporator 120 absorbs the heat of the coolant and becomes a gaseous refrigerant, and the condenser 121 is used to liquefy the gaseous refrigerant, and cool the liquefied refrigerant through the tubular heat exchanger 112, and the liquefied and cooled liquid refrigerant returns to the evaporator 120 for circulation.

[0078] Among them, after the external water pump 111 flows out from the output end, it will enter the tubular heat exchanger 112. In the tubular heat exchanger 112, the external water will undergo a certain degree of heat exchange with the refrigerant to be processed later (the heat exchange with the refrigerant will be described in detail later), and then flow to the plate heat exchanger 110 to continue to participate in the cooling process of the coolant (because the output end of the tubular heat exchanger 112 is connected to the input end of the plate heat exchanger 110). In one embodiment, external water can also be provided to the tubular heat exchanger 112 and the plate heat exchanger 110 separately. In order to save energy consumption, this embodiment adopts the same water supply structure.

[0079] The coolant flowing through the pipeline of the load between it and the circulating water pump 100 will flow through the evaporator 120. Liquid refrigerant is stored inside the evaporator 120. Since the temperature of the coolant is high after absorbing the heat generated by the load, and the temperature of the liquid refrigerant is relatively low. When the coolant flows through the evaporator 120, according to the principle of heat transfer, the heat of the coolant will be transferred to the liquid refrigerant, so that the liquid refrigerant will absorb a large amount of heat and then change from liquid to gaseous refrigerant. The gaseous refrigerant will flow out from the liquid outlet of the evaporator 120 and enter the input end of the condenser 121. The main function of the condenser 121 is to reliquefy the gaseous refrigerant. Through some specific refrigeration technologies and equipment structures (such as compression, heat dissipation and other mechanisms), the gaseous refrigerant releases heat after being processed inside the condenser 121, thereby turning back into liquid refrigerant.

[0080] The liquefied refrigerant flows out from the output end of the condenser 121, and the pipeline first flows through the tubular heat exchanger 112. At this time, the temperature of the liquid refrigerant is still relatively high, and heat is exchanged again with the external water in the tubular heat exchanger 112. Through the heat exchange with the external water, the temperature of the liquid refrigerant will be further reduced, making it more suitable to return to the evaporator 120 to participate in the cooling cycle of the coolant again.

[0081] The liquid refrigerant cooled by the tubular heat exchanger 112 will flow out from its output end, and then return to the liquid inlet end of the evaporator 120 along the connecting pipe, and participate in the entire refrigeration cycle again. Through the coordinated work between the evaporator 120, the condenser 121 and the tubular heat exchanger 112, the heat of the coolant flowing through the load is continuously absorbed, converted into gaseous refrigerant, and then liquefied and cooled before returning to the evaporator 120, achieving continuous and efficient cooling of the coolant to meet the heat dissipation requirements when the external water cooling unit 11 cannot meet the cooling requirements.

[0082] If the load power is very high, the temperature of the coolant flowing through the evaporator 120 is very high, resulting in a high temperature of the refrigerant vaporized in the evaporator 120. After being liquefied by the condenser 121, the tubular heat exchanger 112 alone cannot cool down the liquefied refrigerant in time, thereby affecting the operation of the evaporator 120. In one embodiment, referring to Figure 4 The refrigeration unit 12 further includes an air cooler 122 , an input end of the air cooler 122 is connected to an output end of the condenser 121 , and an output end of the air cooler 122 is connected to a liquid inlet end of the evaporator 120 .

[0083] When the load power is very high, a large amount of heat is transferred to the coolant, causing the temperature of the coolant flowing through the evaporator 120 to rise significantly. In the evaporator 120, due to the high temperature of the coolant, the liquid refrigerant absorbs a large amount of heat and vaporizes, and the temperature of the vaporized refrigerant is also correspondingly high. Afterwards, the high-temperature gaseous refrigerant enters the condenser 121, and changes back to liquid in the condenser 121 through a specific condensation mechanism (such as compression and heat dissipation).

[0084] However, when it is monitored that the temperature of the refrigerant flowing back to the evaporator 120 is greater than or equal to the threshold temperature, it indicates that the tubular heat exchanger 112 cannot meet the cooling demand of the liquefied refrigerant at this time, and the liquefied refrigerant is cooled by the air cooler 122, and the cooled refrigerant flows back to the evaporator 120. The threshold temperature needs to be determined according to the current heat dissipation demand, and the specific value is not specifically limited in this embodiment. In one embodiment, the evaporator 120 has a sensor for monitoring the temperature of the refrigerant therein.

[0085] Since the refrigerant temperature is too high at this time, the heat exchange between the tubular heat exchanger 112 and the external water is not enough to quickly and effectively reduce its temperature. This is because the cooling capacity of the tubular heat exchanger 112 is limited by the external water temperature, flow rate and its own heat exchange efficiency. When this happens, the air cooler 122 begins to intervene.

[0086] The air cooler 122 uses air as a cooling medium, and its input end receives the liquefied refrigerant still in a high-temperature state output from the condenser 121. Inside the air cooler 122, there is a series of heat dissipation fins or pipe structures (not shown in the figure), in which the high-temperature liquefied refrigerant flows. At the same time, the external air blows through these heat dissipation structures under the action of equipment such as a fan. According to the principle of heat exchange, the heat of the high-temperature liquefied refrigerant will be transferred to the air, and the air will take away the heat, thereby achieving the cooling of the liquefied refrigerant. The temperature of the liquefied refrigerant cooled by the air cooler 122 is reduced to a suitable level, and then flows out from the output end of the air cooler 122, smoothly enters the liquid inlet end of the evaporator 120, and re-participates in the entire refrigeration cycle. In this way, it is ensured that the evaporator 120 can work continuously and stably, and that the coolant can effectively transfer heat to the refrigerant in the evaporator 120, maintaining the efficient operation of the entire heat dissipation system.

[0087] In one embodiment, referring to Figure 4 A ball valve D and a ball valve E are respectively provided on the pipeline between the condenser 121 and the tubular heat exchanger 112, and on the pipeline between the condenser 121 and the air cooler 122. The two ball valves are opened and closed respectively, and two methods are selected to cool the liquid refrigerant according to different needs.

[0088] In order to facilitate timely switching of the two cooling modes according to the temperature of the coolant flowing through the load, in one embodiment, continue to refer to Figure 4 The cooling module 1 also includes a three-way valve 13, a first port of the three-way valve 13 is connected to the other end of the pipeline flowing through the load, a second port of the three-way valve 13 is connected to the input end of the circulating water pump 100, and a third port of the three-way valve 13 is connected to the pipeline flowing through the evaporator 120; when the temperature of the coolant flowing through the load is lower than a preset temperature, the first port and the second port of the three-way valve 13 are connected to cool the coolant through the external water cooling unit 11; when the temperature of the coolant flowing through the load is higher than or equal to the preset temperature, the second port of the three-way valve 13 is closed, and the first port and the third port of the three-way valve 13 are connected to cool the coolant through the refrigeration unit 12.

[0089] The temperature reduction method of the external water cooling unit 11 and the temperature reduction method of the refrigeration unit 12 are described above and will not be described in detail here.

[0090] This embodiment adds an emergency module 2 to the heat dissipation device. The energy storage unit 20 in the emergency module 2 can absorb excess cooling when the coolant temperature is low. After the cooling module 1 fails, not only can the emergency water pump 21 maintain the circulation of the coolant, but the cold stored in the energy storage unit 20 can also be used to continuously cool the load, greatly reducing the risk of equipment failure due to heat dissipation problems, improving the reliability and stability of equipment operation, and reducing economic losses and business impacts caused by equipment downtime. At the same time, two cooling modes for the coolant flowing through the load are switched according to the power of the load, achieving effective heat dissipation of the load while also improving the stability of the load.

[0091] Embodiment 2:

[0092] In Example 1, a heat dissipation device integrating air-water cooling and heat storage is proposed. In this embodiment, a heat dissipation method integrating air-water cooling and heat storage is proposed. Figure 5 As shown, the heat dissipation method includes:

[0093] Step 101: Cooling the coolant flowing through the load by the cooling module 1.

[0094] Wherein, the step 101 specifically includes: when the temperature of the coolant flowing through the load is lower than the preset temperature, the first port and the second port of the three-way valve 13 are opened to cool the coolant through the external water cooling unit 11; when the temperature of the coolant flowing through the load is higher than or equal to the preset temperature, the second port of the three-way valve 13 is closed, and the first port and the third port of the three-way valve 13 are opened to cool the coolant through the refrigeration unit 12.

[0095] The preset temperature can be determined according to the actual load, and is not specifically limited in this embodiment. The cooling method of the external water cooling unit 11 and the cooling method of the refrigeration unit 12 are referred to above, and will not be repeated here.

[0096] Step 102: When the cooling module 1 fails, the input and output ends of the cooling module 1 are closed, the emergency water pump 21 is turned on, and the coolant flowing through the load is circulated and cooled through the emergency water pump 21 and the energy storage unit 20.

[0097] When the cooling module 1 fails and cannot cool the coolant normally, the input and output ends of the cooling module 1 are closed, and then the emergency water pump 21 is turned on. The emergency water pump 21 drives the coolant to circulate in the closed loop formed by the energy storage unit 20 and the pipeline flowing through the load. Since the energy storage unit 20 has stored a certain amount of cold energy, when the coolant circulates through the energy storage unit 20, the cold energy is released, thereby cooling the coolant, so as to ensure that the load can still be effectively cooled in an emergency, maintain the normal working state of the load, and avoid equipment damage due to insufficient heat dissipation.

[0098] The specific structure of the air-water cooling and heat storage integrated heat dissipation device is referred to Example 1 and will not be further described in this embodiment.

[0099] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat dissipation device integrating air-water cooling and heat storage, characterized in that: include: A cooling module (1) and an emergency module (2), wherein the emergency module (2) comprises an energy storage unit (20) and an emergency water pump (21); The output end of the cooling module (1) is connected to the input end of the energy storage unit (20), the output end of the energy storage unit (20) is connected to one end of a pipeline flowing through a load, and the other end of the pipeline flowing through the load is connected to the input end of the cooling module (1); one end of the emergency water pump (21) is connected to the input end of the energy storage unit (20), and the other end of the emergency water pump (21) is connected to the other end of the pipeline flowing through the load; The cooling module (1) is used to cool the coolant flowing through the load; When the cooling module (1) fails, the input end and the output end of the cooling module (1) are closed, the emergency water pump (21) is turned on, and the coolant flowing through the load is circulated and cooled through the emergency water pump (21) and the energy storage unit (20).

2. The air-water cooling and heat storage integrated heat dissipation device according to claim 1 is characterized in that: The energy storage unit (20) comprises a heat exchange cold plate (200), a heat transfer fin (201), a plurality of energy storage materials (202) and a cover plate (203); the energy storage materials (202) are sequentially arranged on both sides of the heat exchange cold plate (200); the heat transfer fin (201) is arranged on the heat exchange cold plate (200) and is located between every two energy storage materials (202); the cover plate (203) covers the energy storage material (202); The input end of the heat exchange cold plate (200) is connected to the output end of the cooling module (1), and the output end of the heat exchange cold plate (200) is connected to one end of a pipeline flowing through a load; the heat exchange cold plate (200) and the heat transfer fins (201) are used to transfer heat in the coolant to the energy storage material (202); When the load thermal power consumption is lower than or equal to a preset threshold, the energy storage unit (20) is used to store excess cold in the coolant; when the load thermal power consumption is greater than the preset threshold, the energy storage unit (20) is used to absorb heat in the coolant.

3. The air-water cooling and heat storage integrated heat dissipation device according to claim 2 is characterized in that: A temperature sensor (204) is provided on each energy storage material (202), and the temperature sensor (204) is used to monitor the temperature of the corresponding energy storage material (202); The control system is used to receive the temperature of the energy storage material (202) monitored by the temperature sensor (204), and if it is monitored that the temperature of the energy storage material (202) continues to decrease, and the difference between the temperature of the energy storage material (202) and the temperature of the coolant is less than a preset threshold, adjust the working state of the cooling module (1) or the flow rate of the coolant; If it is monitored that the temperature of the energy storage material (202) continues to rise, the control system evaluates how long the emergency heat dissipation can be maintained based on the temperature monitored by the temperature sensor (204) and takes emergency measures.

4. The air-water cooling and heat storage integrated heat dissipation device according to claim 1, characterized in that: The cooling module (1) comprises a circulation unit (10), wherein the circulation unit (10) comprises at least one circulation water pump (100) and at least one circulation ball valve (101); The circulating ball valve (101) is arranged between the output end of the circulating water pump (100) and the input end of the energy storage unit (20), and the input end of the circulating water pump (100) is connected to the other end of a pipeline flowing through a load; by opening the circulating ball valve (101) and the corresponding circulating water pump (100), the coolant circulates in the pipeline.

5. The air-water cooling and heat storage integrated heat dissipation device according to claim 4 is characterized in that: The cooling module (1) further comprises an external water cooling unit (11), the external water cooling unit (11) comprising a plate heat exchanger (110) and an external water pump (111); the external water pump (111) is arranged in a liquid supply tank, the output end of the external water pump (111) is connected to the input end of the plate heat exchanger (110), and the output end of the plate heat exchanger (110) is connected to the liquid supply tank; The pipeline between the other end of the pipeline flowing through the load and the circulating water pump (100) flows through the plate heat exchanger (110), so as to cool the coolant flowing through the load through the plate heat exchanger (110).

6. The air-water cooling and heat storage integrated heat dissipation device according to claim 5, characterized in that: The external water cooling unit (11) further comprises a tubular heat exchanger (112), the output end of the external water pump (111) is connected to the input end of the tubular heat exchanger (112), and the output end of the tubular heat exchanger (112) is connected to the input end of the plate heat exchanger (110); The cooling module (1) further comprises a refrigeration unit (12), wherein the refrigeration unit (12) comprises an evaporator (120) and a condenser (121); the liquid outlet of the evaporator (120) is connected to the input end of the condenser (121), and the pipeline at the output end of the condenser (121) flows through the tubular heat exchanger (112) and is connected to the liquid inlet end of the evaporator (120); The pipeline between the other end of the pipeline flowing through the load and the circulating water pump (100) also flows through the evaporator (120); The evaporator (120) is provided with a liquid refrigerant. When the cooling liquid from the load flows through the evaporator (120), the liquid refrigerant in the evaporator (120) absorbs the heat of the cooling liquid and becomes a gaseous refrigerant. The condenser (121) is used to liquefy the gaseous refrigerant and cool the liquefied refrigerant through the tubular heat exchanger (112). The liquefied and cooled liquid refrigerant returns to the evaporator (120) for circulation.

7. The air-water cooling and heat storage integrated heat dissipation device according to claim 6, characterized in that: The refrigeration unit (12) further comprises an air cooler (122), wherein an input end of the air cooler (122) is connected to an output end of the condenser (121), and an output end of the air cooler (122) is connected to a liquid inlet end of the evaporator (120); When it is monitored that the temperature of the refrigerant returning to the evaporator (120) is greater than or equal to a threshold temperature, the liquefied refrigerant is cooled by the air cooler (122), and the cooled refrigerant flows back into the evaporator (120).

8. The air-water cooling and heat storage integrated heat dissipation device according to claim 6, characterized in that: The cooling module (1) further comprises a three-way valve (13), a first port of the three-way valve (13) being connected to the other end of a pipeline flowing through a load, a second port of the three-way valve (13) being connected to an input end of the circulating water pump (100), and a third port of the three-way valve (13) being connected to a pipeline flowing through the evaporator (120); When the temperature of the coolant flowing through the load is lower than a preset temperature, the first port and the second port of the three-way valve (13) are connected to cool the coolant through the external water cooling unit (11); When the temperature of the coolant flowing through the load is higher than or equal to a preset temperature, the second port of the three-way valve (13) is closed, and the first port and the third port of the three-way valve (13) are connected to cool the coolant through the refrigeration unit (12).

9. A heat dissipation method integrating air-water cooling and heat storage, characterized in that: The heat dissipation method is applicable to the heat dissipation device integrating air-water cooling and heat storage as claimed in any one of claims 1 to 8, and the heat dissipation method comprises: The cooling module (1) cools down the coolant flowing through the load; When the cooling module (1) fails, the input end and the output end of the cooling module (1) are closed, the emergency water pump (21) is turned on, and the coolant flowing through the load is circulated and cooled through the emergency water pump (21) and the energy storage unit (20).

10. The heat dissipation method integrating air-water cooling and heat storage according to claim 9, characterized in that: The cooling module (1) comprises a three-way valve (13), an external water cooling unit (11) and a refrigeration unit (12); The cooling of the coolant flowing through the load by the cooling module (1) comprises: When the temperature of the coolant flowing through the load is lower than a preset temperature, the first port and the second port of the three-way valve (13) are connected to cool the coolant through the external water cooling unit (11); When the temperature of the coolant flowing through the load is higher than or equal to a preset temperature, the second port of the three-way valve (13) is closed, and the first port and the third port of the three-way valve (13) are connected to cool the coolant through the refrigeration unit (12).

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