Load liquid cooling system and load temperature control method

Abstract

This invention discloses a load-based liquid cooling system, comprising: a load heat exchange structure for absorbing heat from a load device; a flow regulating device for regulating the flow rate of fluid entering the load heat exchange structure; an adsorption refrigeration system for absorbing heat from an introduced heat source fluid to prepare a cryogenic fluid, including a heat source fluid inlet for introducing the heat source fluid, wherein the fluid exiting the fluid outlet of the load heat exchange structure can form a heat source fluid for supplying to the heat source fluid inlet; and a controller capable of controlling the flow regulating device to adjust the flow rate according to the temperature of the fluid exiting the fluid outlet of the load heat exchange structure, so that the temperature of the fluid exiting the fluid outlet of the load heat exchange structure is within a preset temperature range. The above-described load-based liquid cooling system effectively solves the problem of low heat source utilization in current adsorption refrigeration equipment. This invention also discloses a method for controlling the temperature of the load device.

Description

Technical Field

[0001] This invention relates to the field of load liquid cooling technology, and more specifically, to a load liquid cooling system and a load temperature control method. Background Technology

[0002] When applying adsorption refrigeration equipment, the heat generated by the heat source load is mainly utilized. However, the heat generated by the heat source load is not stable because its operation is not constant. The heat generated by the heat source load generally needs to be absorbed by a heat exchange fluid and then carried away. For ease of description, this heat exchange fluid is generally referred to as the heat source fluid, which is relative to the adsorption refrigeration equipment and is used in the desorption phase of the equipment.

[0003] In the process of developing this invention, the inventors discovered at least the following problems in the prior art: A heat source fluid is supplied to the adsorption bed of the adsorption refrigeration equipment for desorption and heat release. The temperature of the heat source fluid determines the desorption effect, and large or small temperature fluctuations will severely affect the desorption effect. Therefore, the heat source utilization rate of current adsorption refrigeration equipment remains low. Summary of the Invention

[0004] In view of this, the first objective of the present invention is to provide a load liquid cooling system that can effectively solve the problem that the heat source utilization rate of current adsorption refrigeration equipment is still not high. The second objective of the present invention is to provide a load device temperature control method.

[0005] To achieve the first objective mentioned above, the present invention provides the following technical solution:

[0006] A load-bearing liquid cooling system, comprising:

[0007] A load heat exchange structure is used to absorb heat from a load device;

[0008] A flow regulating device is used to regulate the flow rate of fluid entering the load heat exchange structure;

[0009] An adsorption refrigeration system for absorbing heat from an introduced heat source fluid to prepare a cryogenic fluid includes a heat source fluid inlet for introducing the heat source fluid, wherein the fluid exiting the fluid outlet of the load heat exchange structure is capable of forming a heat source fluid for supplying to the heat source fluid inlet.

[0010] The controller is capable of controlling the flow regulating device to adjust the flow rate according to the fluid temperature exiting the fluid outlet of the load heat exchange structure, so that the fluid temperature exiting the fluid outlet of the load heat exchange structure is within a preset temperature range.

[0011] In the aforementioned load-based liquid cooling system, when using the heat generated by the load device as the driving heat source for desorption of the adsorbent in the adsorption refrigeration system, the required temperature for desorption is extremely high. By regulating the flow rate in the load heat exchange structure using a flow regulating device, the flow rate can be adjusted according to the heating efficiency of the load device, ensuring that the fluid temperature consistently meets the requirements of the adsorption refrigeration system. Because the outlet temperature is controlled within an acceptable range, it is not allowed to become excessively high, thus still guaranteeing the cooling requirements of the load device. Therefore, in the aforementioned load-based liquid cooling system, the flow rate in the load heat exchange structure is regulated by the flow regulating device to ensure that the outlet temperature is neither too low nor too high, thus guaranteeing both the desorption requirements of the adsorption refrigeration system and the utilization rate of the heat source fluid, while also meeting the heat exchange requirements of the load heat exchange structure. In summary, the aforementioned load-based liquid cooling system effectively solves the problem of the still low heat source utilization rate in current adsorption refrigeration equipment.

[0012] In some technical solutions, the preset temperature range is T. 1y With 1.03*T 1y Between, where T 1y The preset temperature is the optimal resolution temperature range of the current adsorption refrigeration system.

[0013] In some technical solutions, the adsorption refrigeration system further includes a heat source fluid outlet that cooperates with the heat source fluid inlet, the fluid inlet of the load heat exchange structure is connected to the heat source fluid outlet, and the fluid outlet of the load heat exchange structure is connected to the heat source fluid inlet.

[0014] In some technical solutions, the flow regulating device is a heat source fluid drive pump with adjustable drive power, and the flow regulating device is connected in series with the heat exchange channel of the load heat exchange structure; the controller can control the drive power of the heat source fluid drive pump according to the fluid temperature discharged from the fluid outlet of the load heat exchange structure.

[0015] In some technical solutions, the flow regulating device is a flow distribution valve. The inlet of the flow distribution valve is connected to the heat source fluid outlet, and the first outlet of the multiple outlets of the flow distribution valve is connected to the fluid inlet of the load heat exchange structure. The flow distribution valve can adjust the flow rate of the fluid entering the first outlet.

[0016] In some technical solutions, a heat replenishment device is also included. The second outlet of the multiple outlets of the flow distribution valve is connected to the inlet of the heat replenishment channel of the heat replenishment device, and the outlet of the heat replenishment channel of the heat replenishment device is connected to the heat source fluid inlet. The controller can adjust the heat replenishment power of the heat replenishment device according to the fluid temperature at the outlet of the heat replenishment channel so that the temperature at the outlet of the heat replenishment channel is within the preset temperature range.

[0017] In some technical solutions, a heat source drive pump is provided at the heat source fluid inlet or heat source fluid outlet.

[0018] In some technical solutions, the heating device is an electric heating device.

[0019] In some technical solutions, the heating device is the heating end of a mechanical refrigeration system.

[0020] In some technical solutions, a cooling supplement device is also included. The cooling supplement channel of the cooling supplement device is connected in series with the inlet of the load heat exchange structure. When the fluid flow rate discharged from the fluid outlet of the load heat exchange structure reaches the preset flow rate, the controller can control the cooling supplement power of the cooling supplement device according to the fluid temperature discharged from the fluid outlet of the load heat exchange structure, so that the fluid temperature discharged from the fluid outlet of the load heat exchange structure is within the preset temperature range.

[0021] Some technical solutions also include a natural cooling device, wherein the cooling device includes a temperature control channel capable of exchanging heat with the cooling channel, and the temperature control channel is connected to the fluid outlet or return port of the natural cooling device.

[0022] In some technical solutions, the adsorption refrigeration system includes an adsorption bed, a condenser, and an evaporator;

[0023] The adsorption bed includes an adsorption chamber containing an adsorbent and a heat exchange channel capable of exchanging heat with the adsorbent in the adsorption chamber.

[0024] The evaporation chamber of the evaporator is optionally connected to the adsorption chambers corresponding to different adsorptions in the multiple adsorption beds through the first valve group. The evaporator is also provided with a cryogenic fluid channel for heat exchange with the liquid adsorption working fluid in the evaporation chamber. The inlet end of the cryogenic fluid channel is connected to the cryogenic fluid return port, and the outlet end is connected to the cryogenic fluid outlet.

[0025] The condenser's condensing chamber is optionally connected to the adsorption chambers corresponding to different adsorption beds in the plurality of adsorption beds through a second valve group. The condenser is also provided with a cooling fluid channel for exchanging heat with the gaseous adsorption working fluid in the condensing chamber. The inlet of the cooling fluid channel is connected to the cooling fluid inlet, and the inlet of the cooling fluid channel is connected to the cooling fluid outlet.

[0026] One end of each heat exchange channel is optionally connected to the heat source fluid inlet via a first multi-way valve, and the other end of each heat exchange channel is optionally connected to the heat source fluid outlet via a second multi-way valve.

[0027] One end of each heat exchange channel is optionally connected to a cooling fluid inlet via a third multi-way valve, and the other end of each heat exchange channel is optionally connected to a cooling fluid outlet via a fourth multi-way valve.

[0028] To achieve the second objective mentioned above, the present invention also provides a method for controlling the temperature of a load device. This method includes the following steps: adjusting the flow rate of fluid entering the load heat exchange structure so that the temperature of the fluid exiting the load heat exchange structure is within a preset temperature range; and supplying the fluid outlet of the load heat exchange structure to the heat source fluid inlet of an adsorption refrigeration system, so that the adsorption refrigeration system can prepare cryogenic fluid through the heat source fluid introduced via the heat source fluid inlet. In the above-mentioned load device temperature control method, similar to the load liquid cooling system in any of the above technical solutions, the flow rate of the heat exchange fluid in the load heat exchange structure that absorbs heat from the load device is controlled to ensure that the fluid outlet temperature of the load heat exchange structure is within a stable range. Since the above-mentioned load liquid cooling system has the aforementioned technical effects, this load device temperature control method should also have corresponding technical effects.

[0029] Some technical solutions also include:

[0030] When the fluid flow rate of the load heat exchange structure reaches the preset flow rate, the adjustment of the fluid flow rate of the load heat exchange structure is stopped, and the fluid temperature at the fluid inlet of the load heat exchange structure is adjusted so that the fluid outlet temperature of the load heat exchange structure is within the preset temperature range.

[0031] In some technical solutions, the flow rate of the fluid entering the load heat exchange structure can be adjusted so that the temperature of the fluid exiting the load heat exchange structure is within a preset temperature range, as follows:

[0032] Adjust the fluid distribution ratio of the heat source fluid outlet of the adsorption refrigeration system to divide it into two parts according to the adjusted distribution ratio, so as to supply the load heat exchange structure and the heat replenishment device respectively, so that the fluid temperature of the fluid outlet of the load heat exchange structure is within the preset temperature range.

[0033] Adjust the heating power of the heating device to ensure that the fluid outlet temperature of the heating device is within a preset temperature range;

[0034] The step of supplying the fluid from the fluid outlet of the load heat exchange structure to the heat source fluid inlet of the adsorption refrigeration system, so that the heat source fluid introduced through the heat source fluid inlet can be used to prepare a cryogenic fluid, includes:

[0035] The fluid exiting from the heat exchanger structure and the fluid exiting from the heat replenishment device are jointly supplied to the heat source fluid inlet of the adsorption refrigeration system, so that the adsorption refrigeration system can prepare cryogenic fluid through the heat source fluid introduced through the heat source fluid inlet. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of a load liquid cooling system provided in an embodiment of the present invention;

[0038] Figure 2 This is a schematic diagram of another load liquid cooling system provided in an embodiment of the present invention;

[0039] Figure 3 This is a schematic diagram of the adsorption refrigeration system provided in an embodiment of the present invention.

[0040] The following labels are shown in the attached diagram:

[0041] Adsorption refrigeration system 1. Load heat exchange structure 2. Load device 3. Natural cooling device 4. Flow regulating device 5. Flow distribution valve 6. Compression refrigeration system 7. Cooling supplement device 8.

[0042] Heat source fluid inlet 1-1, heat source fluid outlet 1-2, cooling fluid inlet 1-3, cooling fluid outlet 1-4, chilled fluid outlet 1-5, chilled fluid return outlet 1-6, adsorption bed 1-7, evaporator 1-8, condenser 1-9, first valve group 1-10, second valve group 1-11, first multi-way valve 1-12, second multi-way valve 1-13, third multi-way valve 1-14, fourth multi-way valve 1-15, heat exchange channel 1-16, chilled fluid channel 1-17, cooling fluid channel 1-18. Detailed Implementation

[0043] This invention discloses a load-cooled liquid cooling system, which can effectively solve the problem that the heat source utilization rate of current adsorption refrigeration equipment is still not high.

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Please see Figures 1-3 , Figure 1 This is a schematic diagram of a load liquid cooling system provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of another load liquid cooling system provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the adsorption refrigeration system provided in an embodiment of the present invention.

[0046] In some embodiments, a load liquid cooling system is provided, including a load heat exchange structure 2, a flow regulating device 5, an adsorption refrigeration system 1, and a controller.

[0047] The load heat exchange structure 2 is used to absorb heat from the load device 3. The load device 3 refers to a device with a relatively high heating temperature, which can heat the heat exchange fluid to obtain a heat source fluid that meets the needs of the adsorption refrigeration system 1. The load heat exchange structure 2 is, for example, the heat exchange structure of a high-power component in a server, such as a memory or CPU.

[0048] The flow regulating device 5 is used to regulate the flow rate of the fluid entering the load heat exchange structure 2, primarily for adjusting the fluid flow rate within the load heat exchange structure 2. The heat exchange fluid enters the load heat exchange structure 2 to absorb heat and then heats up; the specific temperature increase is related to the flow rate. If the channel flow area is fixed, the flow rate can be regulated by adjusting the flow velocity; if the flow velocity is fixed, the flow area can be adjusted. For example, if the load heat exchange structure 2 has multiple parallel channels, some parallel channels can be closed; alternatively, both the flow area and flow velocity can be adjusted. If the flow rate of the heat exchange fluid in the load heat exchange structure 2 changes, and if the heating power of the load device 3 is consistent, the temperature rise will change accordingly; conversely, if the heating power of the load device 3 changes, the flow rate can be adjusted to keep the temperature rise constant.

[0049] Adsorption refrigeration system 1 is used to absorb heat from an introduced heat source fluid to prepare a cryogenic fluid. Its specific structure can be found in existing technologies. Generally, adsorption refrigeration system 1 mainly includes an adsorption bed 1-7, an evaporator 1-8, and a condenser 1-9, forming an internal circulation of the adsorbed working fluid. Of course, adsorption refrigeration system 1 can also consist only of the adsorption bed 1-7 and the evaporator 1-8, or it can have other structural forms.

[0050] The adsorption refrigeration system 1 is equipped with a heat source fluid inlet 1-1 and generally a chilled fluid outlet 1-5. Other connection ports may also be provided, as described when necessary. The heat source fluid inlet 1-1 is used to introduce heat source fluid to heat the adsorbent, allowing it to regain its adsorption capacity. The chilled fluid outlet 1-5 is used to discharge chilled fluid, which is the evaporation of the adsorbent working fluid caused by adsorption. This evaporation provides a cooling effect, resulting in a chilled fluid with a lower temperature, which flows out from the chilled fluid outlet.

[0051] The fluid exiting the heat exchange structure 2 can serve as a heat source fluid to be supplied to the heat source fluid inlet 1-1. It should be noted that the exited fluid can be directly supplied to the heat source inlet to enter the adsorption bed 1-7 of the adsorption refrigeration system 1 for heating. Alternatively, it can be supplied indirectly to the heat source fluid inlet 1-1, such as by transferring the fluid exiting the heat exchange structure 2 to a heat exchanger, and then transferring heat to another fluid through the heat exchanger to supply the source fluid inlet.

[0052] After the corresponding fluid enters the load heat exchange structure 2, it absorbs heat from the load device 3 at the load heat exchange structure 2 to form a high-temperature fluid outflow. The temperature of the fluid is high enough to serve as a heat source fluid and enters the adsorption refrigeration system 1 to heat the adsorbent in the adsorption refrigeration system 1 so that the adsorbent desorbs the gaseous adsorbent working fluid.

[0053] The controller can adjust the flow rate of the flow regulating device 5 according to the fluid temperature exiting the fluid outlet of the load heat exchange structure 2, so that the fluid temperature exiting the fluid outlet of the load heat exchange structure 2 is within a preset temperature range. The preset range refers to the optimal desorption temperature range of the current adsorption refrigeration system 1, which is generally set according to the operating parameters of relevant equipment such as the load device 3 that can provide the heat source fluid, and then the adsorption refrigeration machine is designed accordingly. For example, in the current silica gel & water adsorption refrigeration system 1, some optimized heat source fluid temperatures can be between 65 degrees Celsius and 55 degrees Celsius. For a well-designed adsorption refrigeration system 1, the temperature of its heat source fluid cannot fluctuate too much, as this will affect the desorption time, which can easily lead to a vicious cycle in some adsorption refrigeration systems 1. Therefore, the temperature difference within the preset temperature range should not exceed 2 degrees Celsius, and the lowest temperature T within the preset temperature range should be [not specified]. l and the highest temperature T h The difference should not exceed 2 degrees Celsius.

[0054] Specifically, the preset temperature range can be T. 1y With 1.03*T 1y Between, where T 1yThe preset temperature represents the lowest temperature T in the current range. l , and 1.03*T 1y T represents the highest temperature in the current range. h That is, the settings are made according to the fluctuation range of the adsorption refrigeration system 1 and the heat source fluid. For example, for a server, the heat source fluid it provides can generally fluctuate between 53 degrees Celsius and 57 degrees Celsius. Therefore, the optimal desorption temperature of the adsorption refrigeration system 1 can be designed to be 55 degrees Celsius. At this point, T... 1y It can be set to 54.2 degrees Celsius, then 1.03 * T. 1y It is around 55.8 degrees Celsius.

[0055] When the controller is performing control, the fluid temperature exiting the fluid outlet of the load heat exchange structure 2 can be lower than the aforementioned minimum temperature T. l At this time, the flow rate in the load heat exchange structure 2 can be reduced by controlling the flow rate adjustment device 5, thereby increasing the fluid outlet temperature of the load heat exchange structure 2. The fluid temperature exiting the fluid outlet of the load heat exchange structure 2 is higher than the aforementioned maximum temperature T. h At this time, the flow rate in the load heat exchange structure 2 can be increased by controlling the flow rate regulation device 5, thereby reducing the fluid outlet temperature of the load heat exchange structure 2. The specific control method is PID regulation. Considering the adjustment delay, the fluid temperature exiting the fluid outlet of the load heat exchange structure 2 is lower than 1.01T. 1y At this time, the flow rate regulating device 5 is adjusted to reduce the flow rate in the load heat exchange structure 2. The reduction range can be further determined based on the change in temperature difference. The fluid temperature exiting the fluid outlet of the load heat exchange structure 2 is higher than 1.02T. 1y At the same time, the flow rate regulating device 5 is adjusted to increase the flow rate in the load heat exchange structure 2. The increase can be further determined based on the change in temperature difference. Specific control steps can refer to existing technologies, where one parameter is adjusted in real time within the system to change another parameter to a stable range.

[0056] In the aforementioned load-based liquid cooling system, when the heat generated by the load device 3 is used as the driving heat source for desorption of the adsorbent in the adsorption refrigeration system 1, the required temperature for desorption is extremely high. The flow rate regulation device 5 adjusts the flow rate in the load heat exchange structure 2 to adjust the flow rate based on the heating efficiency of the load device 3, ensuring that the fluid temperature consistently meets the requirements of the adsorption refrigeration system 1. Because the outlet temperature is controlled within an acceptable range, it is not allowed to become excessively high, thus maintaining the cooling requirements of the load device 3. Therefore, in the aforementioned load-based liquid cooling system, the flow rate in the load heat exchange structure 2 is regulated by the flow rate regulation device 5 to ensure that the outlet temperature is neither too low nor too high, thus guaranteeing both the desorption requirements of the adsorption refrigeration system 1 and the utilization rate of the heat source fluid, while also meeting the heat exchange requirements of the load heat exchange structure 2. In summary, the aforementioned load-based liquid cooling system effectively solves the problem of low heat source utilization in current adsorption refrigeration equipment.

[0057] In some embodiments, the fluid outlet of the load heat exchange structure 2 can be connected to the heat source fluid inlet 1-1. This allows the high-temperature fluid prepared in the load heat exchange structure 2 to be directly used as a heat source fluid to flow into the adsorption refrigeration system 1 to heat the adsorbent. Compared to using a heat exchanger between the two, this better avoids heat loss and makes better use of the heat dissipated by the load device 3.

[0058] In some embodiments, the fluid flowing out of the load heat exchange structure 2 can be discarded after releasing heat to the refrigerant of the adsorption refrigeration system 1. For example, the fluid can release heat as it flows through the adsorption refrigeration system 1 and then be discharged for disposal; or the fluid can flow through a corresponding heat exchanger to transfer heat to the corresponding fluid to form a heat source fluid, and then be discharged after cooling for disposal.

[0059] In some embodiments, considering the load device 3, the heating power may be significantly reduced. This reduction is only reflected in the smaller heating surface area, while the surface temperature should be higher than the aforementioned preset temperature range. In this case, if the fluid flowing out of the load heat exchange structure 2 releases heat to the refrigerant of the adsorption refrigeration system 1, and the resulting fluid temperature can meet the cooling requirements of the load device 3, then the resulting fluid can be directly returned to the load device 3. While ensuring that the outlet temperature meets the requirements, a larger flow rate of heat source fluid can be obtained to better enable the adsorption refrigeration system 1 to perform adsorption refrigeration.

[0060] In some embodiments, such as the heat source fluid outlet 1-2 on the adsorption refrigeration system 1 that cooperates with the heat source fluid inlet 1-1, the heat source fluid outlet 1-2 can be directly connected to the fluid inlet of the load heat exchange structure 2, so that the fluid from the heat source fluid outlet 1-2 returns directly to the load heat exchange structure 2. The cooperation between the heat source fluid outlet 1-2 and the heat source fluid inlet 1-1 means that the heat source fluid introduced from the heat source fluid inlet 1-1, after releasing heat, will flow out from the heat source fluid outlet 1-2 to the outside of the adsorption refrigeration system 1.

[0061] Based on the above description, it can be seen that the channels in the load heat exchange structure 2 and the corresponding heat exchange channels 1-16 in the adsorption refrigeration system 1 can form a circulation channel. After the fluid absorbs heat in the load heat exchange structure 2, it flows to the adsorption refrigeration system 1 to release heat. After releasing heat in the adsorption refrigeration system 1, it flows back to the load heat exchange structure 2 to absorb heat again.

[0062] In some embodiments, the flow regulating device 5 can be a heat source fluid drive pump with adjustable drive power. The flow rate can be changed by altering the flow velocity. Specifically, the flow regulating device 5 can be connected in series with the channel of the load heat exchange structure 2, either at the inlet or outlet of the load heat exchange structure 2, to change its own inlet and outlet pressures by altering its own drive power. The controller can control the drive power of the heat source fluid drive pump based on the fluid temperature exiting the fluid outlet of the load heat exchange structure 2. The heat source fluid drive pump is a type of fluid pump, such as a water pump, whose drive power can be changed by altering the impeller speed.

[0063] In some embodiments, considering that the adsorption refrigeration system 1 is sensitive not only to the temperature of the heat source fluid but also to its flow rate, the flow regulating device 5 can be a flow distribution valve 6. The flow distribution valve 6 can adjust the flow rate of the fluid entering the first outlet, selectively directing part or all of the inlet fluid to the first outlet, while distributing the rest to the second outlet. If the flow distribution valve 6 only includes a first outlet and a second outlet, the inlet fluid can be adjusted as needed to adjust the ratio of fluid entering the first outlet and the second outlet, thereby changing the flow rates at the first and second outlets.

[0064] The inlet of the flow distribution valve 6 is connected to the heat source fluid outlet 1-2, and the first outlet of the multiple outlets of the flow distribution valve 6 is connected to the fluid inlet of the load heat exchange structure 2, so that the fluid from the heat source fluid outlet 1-2 can be partially or completely selected to enter the first outlet as needed, and then enter the load heat exchange structure 2, so that the fluid flow rate in the load heat exchange structure 2 can be regulated.

[0065] The flow distribution valve 6 can be a valve structure including at least one valve port with an adjustable opening degree. By adjusting the valve port opening degree, the proportion of fluid flow passing through the valve port can be changed, thereby achieving regulation. Specifically, two such valve structures can be provided, one valve structure located between the inlet and the first outlet, and the other valve structure located between the inlet and the second outlet. Of course, the flow distribution valve 6 can also refer to existing technologies.

[0066] In some embodiments, when only a portion of the fluid flowing out of the heat source fluid outlets 1-2 enters the first outlet, the remaining fluid can be discharged through other outlets for other uses or not for disposal.

[0067] Furthermore, in order to ensure that the flow rate of the heat source fluid entering the heat source fluid inlet 1-1 is stable, other fluids can be heated before being supplied to the heat source fluid inlet 1-1. Combined with the fluid flowing out of the load heat exchange structure 2, the flow rate of the heat source fluid entering the heat source fluid inlet 1-1 is the same as the flow rate of the heat source fluid exit 1-2. A stable flow rate of heat source fluid is more conducive to the orderly desorption and adsorption of the adsorption refrigeration system 1.

[0068] Specifically, a heat replenishment device can be provided, wherein the second outlet of the multiple outlets of the flow distribution valve 6 is connected to the inlet of the heat replenishment channel of the heat replenishment device, and the outlet of the heat replenishment channel of the heat replenishment device is connected to the heat source fluid inlet 1-1. The heat replenishment device may be an electric heating device or the heating end of a mechanical refrigeration system, such as the condensation heat exchange structure of a compression refrigeration system 7.

[0069] Furthermore, the controller can adjust the heating power of the heating device based on the fluid temperature at the outlet of the heating channel to ensure that the outlet temperature of the heating channel is within the preset temperature range. For the electric heating device, the electric heating power can be adjusted; for the compression refrigeration system 7, the compressor's compression refrigeration system 7 can be adjusted. In this case, the flow regulating device 5 can have multiple second outlets to connect to different heating devices. The compression refrigeration system 7 mainly includes a compressor in continuous circulation, a condensing heat exchange structure, a throttling element, and an evaporating heat exchange structure.

[0070] When a flow distribution valve 6 is installed, a heat source drive pump can also be installed at the heat source fluid inlet 1-1 or the heat source fluid outlet 1-2 to drive the fluid flow of the entire circulation system. In this case, the heat source drive pump can maintain a constant drive power.

[0071] In some embodiments, considering the limited flow of the load heat exchange structure 2, the load device 3 may also experience fluctuations in heat generation power. A cooling supplement device 8 can be further provided, specifically, the cooling supplement channel of the cooling supplement device 8 is connected in series with the inlet of the load heat exchange structure 2.

[0072] When the flow rate of the load heat exchange structure 2 reaches the maximum allowable value, and no further flow can be added, the cooling device 8 can be turned on to cool the fluid entering the load heat exchange structure 2 in order to prevent its outlet temperature from being too high.

[0073] Specifically, the controller can adjust the cooling power of the cooling device 8 based on the fluid temperature at the outlet of the load heat exchange structure 2 when the fluid flow rate reaches the preset flow rate, ensuring that the fluid temperature at the outlet of the load heat exchange structure 2 remains within the preset temperature range. The preset flow rate is generally the maximum allowable flow rate of the load heat exchange structure 2; excessive flow rate with a constant cross-sectional area will result in a very high flow velocity. The cooling power of the cooling device 8 can be adjusted based on its cooling characteristics. If the cooling device 8 is a heat exchanger with two channels, one for cooling and the other for temperature control, the power can be adjusted by regulating the flow rate of the temperature control channel.

[0074] In some embodiments, a natural cooling device 4 is generally also provided. In this case, the supplementary cooling device 8 may include a temperature-controlled channel capable of exchanging heat with the supplementary cooling channel. The temperature-controlled channel is connected to the fluid outlet or return port of the natural cooling device 4. This allows the cooling fluid flowing out of the fluid outlet of the natural cooling device 4 to flow through the temperature-controlled channel to cool the fluid in the cooling channel.

[0075] Furthermore, a control valve can be provided, which is used to control the heat exchange power between the cooling channel and the temperature control channel, such as controlling whether heat exchange occurs between the two channels, and / or controlling the magnitude of the heat exchange power. Specifically, the control valve can control the flow rate in the cooling channel and / or the temperature control channel, controlling the flow rate to adjust the heat exchange power, and / or controlling whether the fluid flows to control whether heat exchange is activated. The form of the control valve is not limited.

[0076] In some embodiments, the provided adsorption refrigeration system 1 may specifically include an evaporator 1-8, a condenser 1-9, and multiple adsorption beds 1-7.

[0077] The corresponding adsorption bed 1-7 includes an adsorption chamber containing adsorbent and a heat exchange channel 1-16 that exchanges heat with the adsorbent in the adsorption chamber. When a heat source fluid is introduced into the heat exchange channel 1-16, the adsorbent begins to desorb the gaseous adsorbent working substance, and the desorbed gaseous adsorbent working substance enters the condenser 1-9. When a cooling fluid is introduced, the adsorbent cools down to begin adsorbing the adsorbent working substance, and then forms a suction force on the gaseous adsorbent working substance in the evaporator 1-8, causing the evaporator 1-8 to continue evaporating to form a gaseous adsorbent working substance, thereby carrying away heat.

[0078] The evaporation chamber of the evaporator 1-8 can be optionally connected to the adsorption chambers corresponding to different adsorption processes in multiple adsorption beds 1-7 via the first valve group 1-10. This allows the adsorption chamber of some adsorption beds 1-7 to be connected to the evaporation chamber while disconnected from the condensation chamber during the adsorption phase. The evaporator 1-8 is also equipped with a cryogenic fluid channel 1-17 for heat exchange with the liquid adsorbent in the evaporation chamber. The inlet end of the cryogenic fluid channel 1-17 is connected to the cryogenic fluid return port 1-6, and the outlet end is connected to the cryogenic fluid outlet 1-5. This allows the liquid adsorbent remaining in the evaporation chamber to continue evaporating after the gaseous adsorbent is drawn away from the adsorption chamber during the adsorption phase. During the evaporation process, the cryogenic fluid absorbs heat, resulting in the temperature of the cryogenic fluid outlet 1-5 being lower than that of the cryogenic fluid inlet.

[0079] The condensing chamber of condenser 1-9 is optionally connected to the adsorption chambers of different adsorption beds 1-7 in the plurality of adsorption beds 1-7 through the second valve group 1-11. This allows the adsorption chamber of some adsorption beds 1-7 to be connected to the condensing chamber while disconnected from the evaporation chamber during the desorption phase. Condenser 1-9 is also provided with a cooling fluid channel 1-18 for heat exchange with the gaseous adsorbent in the condensing chamber. The inlet of cooling fluid channel 1-18 is connected to a cooling fluid inlet 1-3, and the inlet of cooling fluid channel 1-18 is connected to a cooling fluid outlet 1-4. This allows the condensing chamber to receive the gaseous adsorbent when it discharges from the adsorption chamber during the desorption phase, and then transfer heat to the cooling fluid in cooling fluid channel 1-18, so that the cooling fluid entering cooling fluid channel 1-18 is heated and then discharged from the outlet.

[0080] Each heat exchange channel 1-16 has one end optionally connected to the heat source fluid inlet 1-1 via a first multi-way valve 1-12, and the other end optionally connected to the heat source fluid outlet 1-2 via a second multi-way valve 1-13. This allows heat source fluid to be introduced through the first multi-way valve 1-12 when the corresponding adsorption bed 1-7 enters the desorption stage, and the heat source fluid releases heat and exits through the second multi-way valve 1-13.

[0081] Each heat exchange channel 1-16 has one end optionally connected to the cooling fluid inlet 1-3 via a third multi-way valve 1-14, and the other end optionally connected to the cooling fluid outlet 1-4 via a fourth multi-way valve. This allows cooling fluid to be introduced through the third multi-way valve 1-14 when the corresponding adsorption bed 1-7 enters the adsorption stage, and the cooling fluid releases heat and exits through the fourth multi-way valve 1-15.

[0082] It should be noted that the heat exchange channel 1-16 and the cooling fluid channel 1-18 can be connected in series or in parallel.

[0083] In some embodiments, the adsorption refrigeration system 1 may be connected in a manner similar to current regenerative cycles, thermal wave cycles, and multi-stage cycles.

[0084] As attached Figure 1 , 2 As shown, the cooling device is a heat exchanger, including a cooling channel and a temperature control channel, which can exchange heat with each other. The cooling channel is connected between the heat source fluid outlet 1-2 and the inlet of the load heat exchange structure 3, while the two ends of the temperature control channel are connected to the inlet and outlet of the natural cooling device, respectively. The cooling fluid inlet 1-3 is connected to the outlet of the natural cooling device 4, and the cooling fluid outlet 1-4 is connected to the inlet of the natural cooling device 4.

[0085] The cooling channel is also connected in parallel to a connecting channel, which connects the heat source fluid outlet 1-2 and the inlet of the load heat exchange structure 3. The control valve includes two flow valves respectively installed on the cooling channel and the connecting channel. By adjusting their opening degrees, the temperature of the fluid entering the load heat exchange structure 3 is changed.

[0086] The cooling channels of the condenser and the heat exchange channels of the adsorption bed are connected in series or in parallel at the cooling fluid inlet 1-3 and the cooling fluid outlet 1-4, while the attached... Figure 1 , 2 It achieves series connection.

[0087] As attached Figure 2 As shown, the heat replenishment device is a compression refrigeration system, which includes a compressor, a condensing structure, a throttling element and an evaporating structure arranged in sequence. The evaporating structure can cool the frozen fluid, while the condensing structure, as the heating end, can heat the fluid distributed from the flow distribution valve 6 and then return it to the heat source fluid inlet.

[0088] Based on the load liquid cooling system provided in the above embodiments, the present invention also provides a temperature control method for the load device 3. This method includes the following steps: Step S100, adjusting the fluid flow rate entering the load heat exchange structure 2 so that the fluid temperature exiting the fluid outlet of the load heat exchange structure 2 is within a preset temperature range; Step S200, supplying the fluid outlet of the load heat exchange structure 2 to the heat source fluid inlet 1-1 of the adsorption refrigeration system 1, so that the adsorption refrigeration system can prepare cryogenic fluid through the heat source fluid introduced through the heat source fluid inlet 1-1. In the above-described temperature control method for the load device 3, the flow rate of the heat exchange fluid in the load heat exchange structure 2, which absorbs heat from the load device 3, is also controlled to ensure that the fluid outlet temperature of the load heat exchange structure 2 is within a stable range. Therefore, the same control method is used as in the load liquid cooling system in the above embodiments. For the beneficial effects of this temperature control method for the load device 3, please refer to the above embodiments.

[0089] Specifically, the temperature control method for the load device 3 can be based on the liquid cooling equipment for the load device 3 provided in any of the above embodiments to achieve the corresponding steps.

[0090] In some embodiments, the temperature control method for the load device 3 further includes step S300: when the fluid flow rate of the load heat exchange structure 2 reaches a preset flow rate, stopping the adjustment of the fluid flow rate of the load heat exchange structure 2, and adjusting the fluid temperature at the fluid inlet of the load heat exchange structure 2 so that the fluid outlet temperature of the load heat exchange structure 2 is within a preset temperature range. As in some of the above embodiments, a supplementary cooling device 8 is used to supplement the fluid temperature at the inlet of the load heat exchange structure 2. When the flow rate reaches the preset flow rate and cannot be further adjusted, the temperature of the load heat exchange structure 2 can be controlled by the supplementary cooling device 8 to ensure the cooling requirements of the load device 3.

[0091] In some embodiments, step S100 may specifically include:

[0092] Step S110: Adjust the fluid distribution ratio of the heat source fluid outlet 1-2 of the adsorption refrigeration system 1 to divide it into two parts according to the distribution ratio, so as to supply the load heat exchange structure 2 and the heat replenishment device respectively, so that the fluid temperature of the fluid outlet of the load heat exchange structure 2 is within the preset temperature range.

[0093] Step S120: Adjust the heating power of the heating device so that the fluid outlet temperature of the heating device is within the preset temperature range.

[0094] For specific implementation methods, refer to the flow distribution valve 6 in some of the above embodiments.

[0095] Step 200 should be as follows: the fluid exported from the fluid outlet of the load heat exchange structure 2 and the fluid outlet of the heat replenishment device are jointly supplied to the heat source fluid inlet 1-1 of the adsorption refrigeration system 1, so that the adsorption refrigeration system can prepare freezing fluid through the heat source fluid introduced through the heat source fluid inlet 1-1.

[0096] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0097] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A load-bearing liquid cooling system, characterized in that, include: The load heat exchange structure (2) is used to absorb heat from the load device (3); A flow regulating device (5) is used to regulate the flow rate of fluid entering the load heat exchange structure (2); An adsorption refrigeration system (1) for absorbing heat from an introduced heat source fluid to prepare a refrigerated fluid includes a heat source fluid inlet (1-1) for introducing the heat source fluid, and the fluid discharged from the fluid outlet of the load heat exchange structure (2) is capable of forming a heat source fluid for supply to the heat source fluid inlet (1-1). The controller is capable of controlling the flow regulating device (5) to adjust the flow rate according to the fluid temperature discharged from the fluid outlet of the load heat exchange structure (2) so that the fluid temperature discharged from the fluid outlet of the load heat exchange structure (2) is within a preset temperature range.

2. The load liquid cooling system according to claim 1, characterized in that, The preset temperature range is T. 1y With 1.03*T 1y Between, where T 1y This is the preset temperature.

3. The load liquid cooling system according to claim 1, characterized in that, The adsorption refrigeration system (1) further includes a heat source fluid outlet (1-2) that cooperates with the heat source fluid inlet (1-1). The fluid inlet of the load heat exchange structure (2) is connected to the heat source fluid outlet (1-2), and the fluid outlet of the load heat exchange structure (2) is connected to the heat source fluid inlet (1-1).

4. The load liquid cooling system according to claim 3, characterized in that, The flow regulating device (5) is a heat source fluid drive pump with adjustable drive power. The flow regulating device (5) is connected in series with the heat exchange channel (1-16) of the load heat exchange structure (2). The controller can control the drive power of the heat source fluid drive pump according to the fluid temperature output from the fluid outlet of the load heat exchange structure (2).

5. The load liquid cooling system according to claim 3, characterized in that, The flow regulating device (5) is a flow distribution valve (6). The inlet of the flow distribution valve (6) is connected to the heat source fluid outlet (1-2). The first outlet of the multiple outlets of the flow distribution valve (6) is connected to the fluid inlet of the load heat exchange structure (2). The flow distribution valve (6) can adjust the flow rate of the fluid entering the first outlet.

6. The load liquid cooling system according to claim 5, characterized in that, It also includes a heat replenishment device, wherein the second outlet of the multiple outlets of the flow distribution valve (6) is connected to the heat replenishment channel inlet of the heat replenishment device, and the heat replenishment channel outlet of the heat replenishment device is connected to the heat source fluid inlet (1-1); the controller can control the heat replenishment power of the heat replenishment device to adjust the temperature of the heat replenishment channel outlet according to the fluid temperature at the outlet of the heat replenishment channel so that the temperature at the outlet of the heat replenishment channel is within the preset temperature range.

7. The load liquid cooling system according to claim 6, characterized in that, A heat source drive pump is provided at the heat source fluid inlet (1-1) or heat source fluid outlet (1-2).

8. The load liquid cooling system according to claim 7, characterized in that, The heating device is an electric heating device.

9. The load liquid cooling system according to claim 7, characterized in that, The heating device is the heating end of the mechanical refrigeration system.

10. The load liquid cooling system according to any one of claims 1-9, characterized in that, It also includes a cooling device (8), the cooling channel of which is connected in series with the inlet of the load heat exchange structure (2). The controller can control the cooling power of the cooling device (8) according to the fluid temperature at the fluid outlet of the load heat exchange structure (2) when the fluid flow rate at the fluid outlet of the load heat exchange structure (2) reaches the preset flow rate, so that the fluid temperature at the fluid outlet of the load heat exchange structure (2) is within the preset temperature range.

11. The load liquid cooling system according to claim 10, characterized in that, It also includes a natural cooling device (4), and the supplementary cooling device (8) includes a temperature control channel that can exchange heat with the supplementary cooling channel, and the temperature control channel is connected to the fluid outlet or return port of the natural cooling device (4).

12. The load liquid cooling system according to claim 1, characterized in that, The adsorption refrigeration system (1) includes an adsorption bed (1-7), a condenser (1-9), and an evaporator (1-8). The adsorption bed (1-7) includes an adsorption chamber containing an adsorbent and a heat exchange channel (1-16) capable of exchanging heat with the adsorbent in the adsorption chamber. The evaporation chamber of the evaporator (1-8) is optionally connected to the adsorption chambers corresponding to different adsorptions in the multiple adsorption beds (1-7) through the first valve group (1-10). The evaporator (1-8) is also provided with a cryogenic fluid channel (1-17) for heat exchange with the liquid adsorption working fluid in the evaporation chamber. The inlet end of the cryogenic fluid channel (1-17) is connected to the cryogenic fluid return port (1-6), and the outlet end is connected to the cryogenic fluid outlet port (1-5). The condensing chamber of the condenser (1-9) is optionally connected to the adsorption chambers corresponding to different adsorption beds (1-7) among the plurality of adsorption beds (1-7) through the second valve group (1-11). The condenser (1-9) is also provided with a cooling fluid channel (1-18) for heat exchange with the gaseous adsorption working fluid in the condensing chamber. The inlet of the cooling fluid channel (1-18) is connected to the cooling fluid inlet (1-3), and the inlet of the cooling fluid channel (1-18) is connected to the cooling fluid outlet (1-4). One end of each of the heat exchange channels (1-16) is optionally connected to the heat source fluid inlet (1-1) via a first multi-way valve (1-12), and the other end of each of the heat exchange channels (1-16) is optionally connected to the heat source fluid outlet (1-2) via a second multi-way valve (1-13). One end of each of the heat exchange channels (1-16) is optionally connected to the cooling fluid inlet (1-3) via a third multi-way valve (1-14), and the other end of each of the heat exchange channels (1-16) is optionally connected to the cooling fluid outlet (1-4) via a fourth multi-way valve (1-15).

13. A method for temperature control of a load device, characterized in that, Includes the following steps: Adjust the fluid flow rate into the load heat exchange structure so that the fluid temperature exiting the fluid outlet of the load heat exchange structure is within a preset temperature range; The fluid exported from the fluid outlet of the load heat exchange structure is supplied to the heat source fluid inlet of the adsorption refrigeration system, so that the adsorption refrigeration system can prepare cryogenic fluid through the heat source fluid introduced through the heat source fluid inlet.

14. The server temperature control method according to claim 13, characterized in that, Also includes: When the fluid flow rate of the load heat exchange structure reaches the preset flow rate, the adjustment of the fluid flow rate of the load heat exchange structure is stopped, and the fluid temperature at the fluid inlet of the load heat exchange structure is adjusted so that the fluid outlet temperature of the load heat exchange structure is within the preset temperature range.

15. The server temperature control method according to claim 13, characterized in that, The adjustment of the fluid flow rate into the load heat exchange structure to ensure that the fluid temperature exiting the load heat exchange structure is within a preset temperature range is as follows: Adjust the fluid distribution ratio of the heat source fluid outlet of the adsorption refrigeration system to divide it into two parts according to the adjusted distribution ratio, so as to supply the load heat exchange structure and the heat replenishment device respectively, so that the fluid temperature of the fluid outlet of the load heat exchange structure is within the preset temperature range. Adjust the heating power of the heating device to ensure that the fluid outlet temperature of the heating device is within a preset temperature range; The step of supplying the fluid from the fluid outlet of the load heat exchange structure to the heat source fluid inlet of the adsorption refrigeration system, so that the heat source fluid introduced through the heat source fluid inlet can be used to prepare a cryogenic fluid, includes: The fluid exiting from the heat exchanger structure and the fluid exiting from the heat replenishment device are jointly supplied to the heat source fluid inlet of the adsorption refrigeration system, so that the adsorption refrigeration system can prepare cryogenic fluid through the heat source fluid introduced through the heat source fluid inlet.

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