Adsorption refrigeration system, server liquid cooling system, adsorption bed use method and medium

Abstract

This invention discloses an adsorption refrigeration system, a server liquid cooling system, an adsorption bed usage method, and a medium. The adsorption refrigeration system includes an adsorption bed and a heat source supply port. The heat source supply port is connected to a heat exchange channel of the adsorption bed to supply heat source fluid to the heat exchange channel. The adsorption bed is provided with an adsorbent to exchange heat with the heat exchange channel, and also includes an electric heating device for heating the fluid supplied to the heat exchange channel. During use, periodic operation can effectively avoid the problem of continuous decline in desorption and adsorption efficiency. Furthermore, the above method reduces the maintenance cost of the adsorption bed system. Online maintenance is also possible, making maintenance more convenient. In summary, this invention effectively solves the problem of poor performance of current adsorption bed systems.

Description

Technical Field

[0001] This invention relates to the field of adsorption refrigeration technology, and more specifically, to an adsorption refrigeration system, a server liquid cooling system, an adsorption bed usage method, and a medium. Background Technology

[0002] The adsorption refrigeration system mainly involves three structures: adsorption bed, condenser and evaporator. Multiple adsorption beds can be set up in parallel and / or in series. The specific connection method of the adsorption refrigeration system can refer to the current regenerative cycle, thermal wave cycle and multi-stage cycle, etc.

[0003] Generally, during the adsorption stage, a heat source fluid is introduced into the adsorption bed to desorb the gaseous adsorbent. The condenser is used to remove the desorbed gaseous adsorbent from the adsorption bed and dissipate heat through the introduced cooling fluid, thus condensing it into a liquid adsorbent. Desorption is typically considered complete when the adsorption bed has fully desorbed the gaseous adsorbent.

[0004] Furthermore, a low-temperature cooling fluid can be introduced into the adsorption bed again to cool it down and allow it to enter the adsorption stage. At this time, the gaseous adsorbent in the chamber where the adsorbent is located is absorbed by the adsorbent, and the outlet of the evaporator's evaporation chamber is used to connect to the adsorption chamber of the adsorption bed so that the adsorbent in the evaporation chamber is continuously absorbed by the adsorbent. In this way, the evaporator can achieve evaporation and heat absorption.

[0005] In practical applications, the evaporator will not work if the heat source disappears temporarily or the temperature drops to a level that is insufficient for desorption.

[0006] In practical applications, the adsorption efficiency of adsorption beds decreases with long-term use, resulting in poor adsorption effects and significantly increasing the overall cost of using adsorption beds.

[0007] In the process of realizing this invention, the inventors discovered at least the following problems in the prior art: the current adsorption effect of adsorption beds is not good. Summary of the Invention

[0008] In view of this, the first objective of the present invention is to provide an adsorption refrigeration system, a server liquid cooling system, an adsorption bed usage method and medium, which can effectively solve the problem of poor adsorption effect of current adsorption beds.

[0009] To achieve the first objective, the present invention provides the following technical solution:

[0010] An adsorption refrigeration system includes an adsorption bed and a heat source supply port, wherein the heat source supply port is connected to a heat exchange channel of the adsorption bed for supplying a heat source fluid to the heat exchange channel; the adsorption bed is provided with an adsorbent to exchange heat with the heat source fluid in the heat exchange channel, and further includes an electric heating device for heating the heat source fluid entering the heat exchange channel.

[0011] During use, due to the instability of the heat source temperature, especially when driven by a low-temperature heat source, some adsorbent in the adsorption bed may not be fully desorbed due to surface tension, uneven heat transfer, and other reasons during long-term use. When the adsorbent is not desorbed, it needs to release heat to cool down during the adsorption stage. Since the adsorbent has a high specific heat capacity, this results in a large amount of heat absorption. During the desorption stage, this remaining adsorbent needs to absorb heat from the heat source, and this cycle repeats, making it difficult to improve desorption and adsorption efficiency. As the usage time increases, desorption and adsorption efficiency gradually decreases. However, by adding an electric heating device, it can be periodically turned on to ensure the heat source temperature reaches a sufficient level. When the temperature is sufficient and the heating time of the adsorption bed is adequate, the remaining adsorbent in the adsorption bed is more easily released at a higher temperature, and even areas with delayed heat transfer will receive sufficient heat, effectively forcing the release of the remaining adsorbent and preventing it from affecting desorption and adsorption efficiency. During use, periodic operation can effectively prevent the continuous decline in desorption and adsorption efficiencies. Furthermore, the aforementioned methods result in lower maintenance costs for the adsorption bed system and allow for online maintenance, making maintenance more convenient. In summary, this adsorption bed system effectively solves the problem of poor performance in current adsorption bed systems.

[0012] In some technical solutions, the electric heating device is disposed between the heat source supply port and the heat exchange channel to heat the heat source fluid to be entered into the heat exchange channel.

[0013] In some technical solutions, the maximum heating temperature of the electric heating device is not lower than the optimal desorption temperature of the adsorbent.

[0014] In some technical solutions, a heat source outlet and a drive pump are also included. The outlet end of the heat exchange channel is optionally connected to one of the heat source outlet and the inlet of the electric heating device through a first valve device. The drive pump enables the fluid to circulate between the electric heating device and the heat exchange channel.

[0015] In some technical solutions, a pressure detector for detecting the pressure of the adsorption chamber of the adsorption bed and / or a flow detector for detecting the flow rate of the working fluid at the outlet of the adsorption chamber are also included.

[0016] In some technical solutions, the electric heating device has at least two levels of heating power.

[0017] In some technical solutions, a controller is also included, which can control the electric heating device to operate at a first power, and control the electric heating device to start operating at a second power when the detection value detected by the pressure detector and / or flow detector in real time decreases to a first preset value, and stop operating at the second power after the detection value of the pressure detector and / or flow detector decreases to a second preset value; the second power is greater than the first power; the second preset flow rate is not greater than the first preset flow rate.

[0018] In some technical solutions, a second valve device is also included, wherein one end of the heat exchange channel of each of the plurality of adsorption beds is optionally connected to the heat source supply port through the second valve device, and the other end is optionally connected to the heat source discharge port through the second valve device.

[0019] In some technical solutions, a third valve device, a cooling fluid supply port, and a cooling fluid outlet are also included. One end of the heat exchange channel corresponding to the plurality of adsorption beds is optionally connected to the cooling fluid supply port through the third valve device, and the other end is optionally connected to the cooling fluid outlet through the third valve device.

[0020] Some technical solutions include condensers and evaporators;

[0021] The evaporation chamber of the evaporator is optionally connected to the adsorption chambers corresponding to different adsorption beds in the plurality of adsorption beds through the first valve group. The evaporator is also provided with a refrigeration fluid channel for heat exchange with the liquid adsorption working fluid in the evaporation chamber.

[0022] 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.

[0023] The heat source supply port and the drive pump are connected to the inlet of the electric heating device through a liquid inlet three-way valve. One end of each heat exchange channel is optionally connected to the outlet of the electric heating device through a first multi-way valve. The other end of each heat exchange channel is respectively connected to the liquid inlet of a second multi-way valve. The liquid outlet of the second multi-way valve is provided with a valve body to optionally supply liquid to the heat source outlet and the drive pump.

[0024] One end of each heat exchange channel is optionally connected to a cooling fluid supply port via a third multi-way valve, and the other end of each heat exchange channel is connected to a fourth multi-way valve and connected to a cooling fluid outlet.

[0025] The cooling fluid passage is connected in series between the third multi-way valve and the cooling fluid supply port.

[0026] To achieve the second objective, the present invention also provides a server liquid cooling system, which includes any of the aforementioned adsorption refrigeration systems, a cooling tower, and a server liquid cooling device. The cooling tower provides cooling fluid to the adsorption bed of the adsorption refrigeration system, and the hot water outlet of the server liquid cooling device is connected to the heat source supply port of the adsorption refrigeration system. Since the aforementioned adsorption refrigeration system has the above-mentioned technical effects, the server liquid cooling system with this adsorption refrigeration system should also have corresponding technical effects.

[0027] To achieve the third objective, the present invention also provides a method for using an adsorption bed, comprising: heating a heat source fluid entering the adsorption bed using an electric heating device. Since both this adsorption bed usage method and the aforementioned adsorption refrigeration system employ electric heating, the server liquid cooling system should also possess the corresponding technical effects.

[0028] In some technical solutions, heating the heat source fluid entering the adsorption bed by means of an electric heating device includes: gradually increasing the heating power of the electric heating device so that the temperature of the heat source fluid entering the adsorption bed increases gradually.

[0029] In some technical solutions, the stepwise increase of the heating power of the electric heating device includes: at the current heating level, acquiring in real time the detection values ​​of the working fluid outlet flow rate and / or the adsorption chamber pressure of the adsorption bed, and when the detection values ​​decrease to the preset value corresponding to the current power level, controlling the heating power of the electric heating device to increase to the corresponding value of the next heating level.

[0030] To achieve the fourth objective, the present invention also provides a computer-readable storage medium for storing a computer program that, when executed by a processor, implements the adsorption bed usage method as described in any of the preceding claims. Attached Figure Description

[0031] 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.

[0032] Figure 1 This is a schematic diagram of an adsorption refrigeration system provided in an embodiment of the present invention;

[0033] Figure 2This is a schematic diagram of another adsorption refrigeration system provided in an embodiment of the present invention.

[0034] The following labels are shown in the attached diagram:

[0035] 1. Adsorption bed; 2. Heat source supply port; 3. Heat exchange channel; 4. Electric heating device; 5. Heat source outlet; 6. Drive pump; 7. Condenser; 8. Evaporator; 9. First valve group; 10. Second valve group; 11. Liquid inlet three-way valve; 12. First multi-way valve; 13. Second multi-way valve; 14. Third multi-way valve; 15. Fourth multi-way valve; 16. Cooling fluid channel; 17. Switch valve; 18. Cooling fluid supply port; 19. Cooling fluid outlet; 20. Refrigeration fluid channel; 21. Three-way structure. Detailed Implementation

[0036] This invention discloses an adsorption refrigeration system to effectively solve the problem of poor adsorption effect in current adsorption beds.

[0037] 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.

[0038] Please see Figures 1-2 , Figure 1 This is a schematic diagram of an adsorption refrigeration system provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of another adsorption refrigeration system provided in an embodiment of the present invention.

[0039] In some embodiments, an adsorption refrigeration system is provided, including an adsorption bed 1, a heat source supply port 2, and an electric heating device 4, and may also include a condenser 7, an evaporator 8, etc.

[0040] The adsorption bed 1 mainly includes an adsorption chamber, an adsorbent, and a heat exchange channel 3. The adsorption chamber contains the adsorbent, and the heat exchange channel 3 allows for heat exchange with the adsorbent. When a high-temperature fluid flows through the heat exchange channel 3, the adsorbent absorbs heat from the high-temperature fluid and desorbs the gaseous adsorbent, which is then discharged from the adsorption chamber and enters the condenser 7. When a low-temperature fluid flows through the heat exchange channel 3, the adsorbent releases heat to the low-temperature fluid, causing the gaseous adsorbent in the adsorption chamber to be adsorbed by the adsorbent. Then, the gaseous adsorbent in the evaporator 8 can continuously enter the adsorption chamber.

[0041] The heat source supply port 2 is connected to the heat exchange channel 3 of the adsorption bed 1 to supply heat source fluid to the heat exchange channel 3. In use, the heat source supply port 2 is connected to the heat exchange fluid outlet of the heat source equipment. After the heat exchange fluid absorbs heat in the heat source equipment, it forms a high-temperature fluid and then enters the heat exchange channel 3 of the adsorption bed 1 from the heat source supply port 2 to heat the adsorbent.

[0042] The electric heating device 4 is used to heat the fluid entering the heat exchange channel 3. The fluid entering the heat exchange channel 3 refers to the fluid that is about to flow into the heat exchange channel 3. The fluid can come from the heat source supply port 2 or from the outlet end of the heat exchange channel 3. The electric heating device 4 can heat the fluid and then supply it to the inlet end of the heat exchange channel 3.

[0043] Specifically, the electric heating device 4 can be installed between the heat source supply port 2 and the heat exchange channel 3 to heat the heat source fluid. Alternatively, the electric heating device 4 can be connected in parallel with the heat source supply port 2, in which case the inlet of the electric heating device 4 can be connected to the outlet of the heat exchange channel 3, and the outlet can be connected to the inlet of the heat exchange channel 3, for circulating flow. The electric heating device 4 can include a flow pipe and an electric heating wire installed on the flow pipe; of course, the electric heating device 4 can also be other forms of fluid heating device.

[0044] In some embodiments, by providing an electric heating device 4, when the heat source is unable to meet the desorption requirements in the short term due to equipment failure, maintenance, or other issues, resulting in the inability to cool, the electric heating device 4 can be activated to provide appropriate supplementary heating, ensuring that the evaporator 8 continues to evaporate and cool. Although electric heating consumes a lot of energy for occasional, small-scale supplementary cooling, its maintenance and purchase costs are low. If the operating time within its lifespan is very short, the increased power consumption cost is lower than the purchase and maintenance costs of the compressor system. Therefore, compared to adding other supplementary cooling devices, the electric heating device 4 has the lowest cost.

[0045] In some embodiments, during use, due to the instability of the heat source temperature, especially when driven by a low-temperature heat source, the adsorbent in adsorption bed 1 may not be fully desorbed during the desorption stage due to factors such as surface tension and uneven heat transfer. When the adsorbent fails to be desorbed, it needs to release heat to cool down before entering the adsorption stage. Since the adsorbent has a relatively high specific heat capacity, this results in a large amount of heat absorption. Upon re-entering the desorption stage, this remaining adsorbent needs to absorb heat again, and this process repeats, making it difficult to improve desorption and adsorption efficiency. As the usage time increases, the desorption and adsorption efficiency gradually decreases. After adding the electric heating device 4, it can be turned on periodically or periodically as needed to ensure that the heat source temperature reaches a sufficient level. When the temperature is sufficient and the heating time of the adsorption bed 1 is sufficient, the residual adsorbent in the adsorption bed 1 is more easily released at a higher temperature, and the parts that are not heat-transferring in time will also receive sufficient heat, thereby effectively forcing the release of the residual adsorbent and improving or preventing the residual adsorbent from affecting the desorption and adsorption efficiency. During use, periodic activation can effectively avoid the problem of continuous decline in desorption and adsorption efficiency. At the same time, the above method not only reduces the system maintenance cost of the adsorption bed 1, but also allows for online maintenance, making maintenance more convenient. In summary, this adsorption bed 1 system can effectively solve the problem of poor performance of the current adsorption bed 1 system.

[0046] Especially in low-temperature driven adsorption beds, the temperature of the low-temperature heat source fluid is generally between 40 and 60 degrees Celsius. When water is used as the adsorption medium, residues are easily generated because the micropores of the adsorbent are not uniform. However, when a high-temperature heat source fluid is used, such as above 80 degrees Celsius, the residues can be removed very well.

[0047] In some embodiments, to better remove residues and ensure sufficient removal, the maximum heating temperature of the electric heating device 4 can be set to be no lower than the optimal desorption temperature of the adsorbent. The maximum heating temperature of the electric heating device 4 refers to the highest temperature at which the heat source fluid can be heated; when this cannot be measured precisely, it can be measured by the highest temperature of the heating surface. Of course, the final temperature of the heat source fluid after heating is also related to the flow rate. In practical design, the maximum heating power of the electric heating device 4 can be set correspondingly to its flow area; the larger the flow area, the greater the maximum heating power, and the maximum flow rate within the current flow area can be considered. The maximum heating power of the electric heating device 4 is related not only to the heating surface area but also to the heating temperature.

[0048] The optimal desorption temperature of the adsorbent is generally designed during the design of the adsorption bed 1 to accommodate the temperature range of the heat source. For example, when applied to a server liquid cooling system, the temperature range of the hot water that the server liquid cooling equipment can discharge needs to be considered. Of course, it can also be inferred from the material and structure of the adsorbent itself.

[0049] In server liquid cooling systems, where the heat source temperature can be between 45 and 75 degrees Celsius, the maximum heating temperature of the electric heating device 4 can exceed 75 degrees Celsius, such as 80 degrees Celsius. During use, the electric heating device 4 periodically raises the heat source temperature to 80 degrees Celsius and maintains it for a period of time, such as about half an hour, or for a duration consistent with the preset desorption time. This can be repeated for several consecutive desorption stages to ensure that the residual adsorbent in the adsorption bed 1 is fully desorbed.

[0050] In some embodiments, considering that the fluid temperature flowing out of the heat exchange channel 3 is still relatively high during residue removal or short-term supplemental heating via the electric heating device 4, this fluid can be utilized to reduce energy consumption. Based on this, the adsorption refrigeration system can further include a heat source outlet 5 and a drive pump 6. The outlet of the heat exchange channel 3 can be optionally connected to either the heat source outlet 5 or the inlet of the electric heating device 4 via a first valve device (such as the switching valve 17 and the three-way structure 21 described later). The drive pump 6 enables the fluid to circulate between the electric heating device 4 and the heat exchange channel 3. This allows the outlet of the heat exchange channel 3 to be disconnected from the heat source outlet 5 and connected to the inlet of the electric heating device 4 during residue removal or supplemental heating via the electric heating device 4. When the drive pump 6 is activated, the fluid circulates between the heat exchange channel 3 and the electric heating device 4, which facilitates heat reuse and avoids heat loss. The drive pump 6 can be installed in the heat exchange channel 3, such as between the heat source supply port 2 and the heat exchange channel 3, or between the heat source discharge port 5 and the heat exchange channel 3.

[0051] Furthermore, a detection device can be installed to monitor the desorption state of the adsorption bed 1 in real time, to determine whether there is still adsorbent desorbed from the adsorbent, and to further determine the desorption efficiency. This allows the device to determine whether the residue is effectively removed during the removal process by the electric heating device 4, and also to determine the operating time of the electric heating device 4. During the process of removing residue by the electric heating device 4, the detection device will detect the desorption of a portion of the adsorbate from the adsorbent. This indicates that the residual adsorbate has been desorbed. As the electric heating device 4 continues to operate, if the detection device no longer detects the desorption of adsorbate or the desorbed adsorbate mass is very low, then the residue removal is considered complete.

[0052] Specifically, the detection equipment could be a pressure detector used to detect the pressure in the adsorption chamber of adsorption bed 1. This is because when the adsorbate is desorbed and enters the adsorption chamber, it will inevitably cause an increase in the pressure in the adsorption chamber. However, the increase is relatively small and is affected by many factors, making detection difficult. But the detection method is relatively simple.

[0053] Specifically, the detection equipment can be a flow detector used to detect the flow rate of the working medium outlet of the adsorption chamber. This is because when the working medium is desorbed and enters the adsorption chamber, it will flow out from the working medium outlet of the adsorption chamber, and thus the flow rate can be detected.

[0054] The detection equipment can, of course, be other equipment, such as pressure detectors and flow detectors, or both. That is, the adsorption refrigeration system includes pressure detectors and / or flow detectors.

[0055] Furthermore, considering the characteristics of the adsorbent, if the heating temperature is raised too high at once, it can easily lead to a rapid increase in internal pressure, affecting the structural stability of the adsorbent. Therefore, it is preferable that the electric heating device 4 has multi-stage heating power, allowing the heating power to be increased step by step during use, so that the temperature of the heat source fluid entering the heat exchange channel 3 increases gradually.

[0056] Furthermore, the aforementioned detection equipment can be combined with the electric heating device 4 to increase the heating power. If the detection value does not change significantly, it can better reflect the good residue removal effect of the adsorption bed 1. This not only improves energy efficiency but also allows for better identification of residues that cannot be removed by heating, facilitating the assessment of the adsorption bed 1's operating status.

[0057] Specifically, three heating levels can generally be set. At adjacent heating levels, the temperature difference of the heat source flowing from the electric heating device 4 is preferably the same, and generally corresponds to the highest temperature of the heat source obtained by the adsorption bed 1 from the outside; that is, the higher the latter temperature, the greater the temperature difference. It should be noted that the heating level generally corresponds to the heating power, and the heating level corresponds to the fluid temperature after being heated by the electric heating device 4. The higher the required fluid temperature after heating, the greater the heating power will be. Of course, the fluid temperature after heating is also related to the current fluid temperature.

[0058] If the highest temperature of the heat source obtained by the adsorption bed 1 from the outside is 60 degrees Celsius: then when the electric heating device 4 operates at the first heating level, it can heat the flowing heat source water to 70 degrees Celsius before discharge; when the electric heating device 4 operates at the second heating level, it can heat the flowing heat source water to 80 degrees Celsius before discharge; when the electric heating device 4 operates at the third heating level, it can heat the flowing heat source water to 90 degrees Celsius before discharge. In other embodiments, other heating levels can also be used, and this application does not specifically limit them. When performing periodic or cyclical removal of residues, the following steps can be performed:

[0059] Step 110: Turn on the electric heating device 4 and set it to the first heating level.

[0060] Step 120: When the electric heating device 4 is operating at the first heating level, the detection value detected by the detection device is obtained in real time, and when the detection value is lower than the first preset value, the electric heating device 4 is controlled to switch to the second heating level.

[0061] Step 130: When the electric heating device 4 is working at the second heating level, the detection value detected by the detection device is obtained in real time. When the detection value is lower than the second preset value and the detection value is never higher than the third preset value, the electric heating device 4 is controlled to stop working. When the detection value is lower than the second preset value and the detection value is never higher than the third preset value, the electric heating device 4 is controlled to work at the third heating level.

[0062] Step 140: When the electric heating device 4 is working at the third heating level, the detection value detected by the detection equipment is obtained in real time, and when the detection value is lower than the fourth preset value, the electric heating device 4 is controlled to stop working.

[0063] The first, second, and fourth preset values ​​can be equal. The third preset value must be at least greater than the second preset value. Alternatively, the fourth, second, first, and third preset values ​​can increase sequentially.

[0064] When a controller is provided, the controller can be enabled to perform control according to steps 110 to 140.

[0065] When a flow detector is used as the aforementioned detection device, a controller can be set up for automatic control to facilitate automatic control. Specifically, the controller can control the electric heating device 4 to operate at a first power. While the electric heating device 4 is operating at the first power, when the real-time detection value detected by the flow detector decreases to a first preset flow rate, the electric heating device 4 is controlled to start operating at a second power. While the electric heating device 4 is operating at the second power, when the detection value detected by the flow detector decreases to a second preset flow rate, it stops operating at the second power. After stopping operating at the second power, the electric heating device 4 can either operate at a third power or be shut down. The second power is greater than the first power, and the third power should be greater than the second power. The higher the power, the higher the temperature of the heat source fluid, resulting in a higher temperature of the adsorption bed 1. The second preset flow rate is not greater than the first preset flow rate; specifically, the first preset flow rate can be equal to the second preset flow rate.

[0066] With the above setup, a lower heat source fluid can be used to heat the adsorption bed 1 to remove residues until very little gaseous adsorbent is desorbed. Then, a higher heat source fluid is used to heat the adsorption bed 1. At this higher temperature, any remaining residue will be further desorbed from the adsorbent under the higher heat source fluid heating, until very little gaseous adsorbent is desorbed. At this point, it can generally be considered that the remaining adsorbent has been effectively desorbed. However, if a significant amount of residue may still remain, an even higher heat source can be introduced to further desorb the remaining adsorbent from the adsorbent.

[0067] In some embodiments, to enable continuous cooling or reduce cooling downtime in the adsorption refrigeration system, multiple adsorption beds 1 are typically provided. The adsorption start and end points of the multiple adsorption beds 1 are staggered so that there is always an adsorption bed 1 in the adsorption phase, thus enabling continuous cooling. The adsorption refrigeration system may also include a second valve device (such as a first multi-way valve 12 and a second multi-way valve 13). One end of the heat exchange channel 3 of each of the multiple adsorption beds 1 is optionally connected to the heat source supply port 2 via the second valve device, and the other end is optionally connected to the heat source discharge port 5 via the second valve device. The second valve device can be a reversing valve, or it can be a valve group, such as using two multi-way valves for control, or it can be multiple one-way valves. In operation, with multiple adsorption beds 1, when one adsorption bed 1 enters the desorption stage, the second valve device allows the heat source fluid entering through the heat source supply port 2 to enter the heat exchange channel 3 of that adsorption bed 1 and then flow out from the heat source outlet 5. Conversely, when one adsorption bed 1 enters the adsorption stage, the second valve device prevents the heat source fluid entering through the heat source supply port 2 from entering the heat exchange channel 3 of that adsorption bed 1, thus ceasing desorption. As shown in the attached diagram, if only two adsorption beds 1 are provided, one adsorption bed 1 will desorb while the other adsorbs, and this process will alternate.

[0068] In some embodiments, during the adsorption stage, it is also necessary to introduce a cryogenic fluid into the adsorption bed 1. Therefore, a cooling fluid supply port 18 and a cooling fluid outlet 19 are generally provided. For the adsorption bed 1, the cooling fluid and the aforementioned heat source fluid can flow through the same heat exchange channel 3, or they can flow through other channels. If they flow through the same heat exchange channel 3, then one end of the heat exchange channel 3 corresponding to multiple adsorption beds 1 can be optionally connected to the cooling fluid supply port 18 through a third valve device (such as including a third multi-way valve 14 and a fourth multi-way valve 15), and the outlet end can be optionally connected to the cooling fluid outlet 19 through a third valve device.

[0069] The third valve device can be configured similarly to the second valve device, and can be a valve group or a reversing valve. Specifically, it can be configured as needed. During use, when an adsorption bed 1 enters the desorption stage, the corresponding valve port of the second valve device needs to open, allowing fluid from the heat source supply port 2 to enter the heat exchange channel 3 of the adsorption bed 1, and then flow out from the heat exchange channel 3 to enter the heat source discharge port 5, and finally be discharged. At this time, the adsorbent desorbs the adsorbent working fluid. Meanwhile, because the corresponding valve port of the third valve device is closed, the cooling fluid from the cooling fluid supply port 18 cannot enter the adsorption bed 1. When the adsorption bed 1 needs to enter the adsorption stage, the corresponding valve port of the second valve device closes, preventing fluid from the heat source supply port 2 from entering the heat exchange channel 3 of the adsorption bed 1; and the corresponding valve port of the third valve device opens, allowing the cooling fluid from the cooling fluid supply port 18 to enter the adsorption bed 1 for adsorption.

[0070] In some embodiments, as shown in the appendix Figure 1 As shown, a typical adsorption refrigeration system will be equipped with a condenser 7 and an evaporator 8.

[0071] The evaporator 8 has an evaporation chamber that can be optionally connected to the adsorption chambers of different adsorption beds 1 in the plurality of adsorption beds 1 via a first valve group 9. The evaporator 8 also has a chilled fluid channel 20 for heat exchange with the liquid adsorbent in the evaporation chamber. The chilled fluid channel 20 is used to cool the object being cooled. Generally, the chilled fluid channel 20 and the channel in the object being cooled form a circulating flow, so that after absorbing heat in the object being cooled, it flows back into the chilled fluid channel 20 and then releases heat in the evaporator 8, causing the liquid adsorbent in the evaporation chamber to evaporate and carry away the heat. When the adsorption bed 1 is in the adsorption stage, the adsorption chamber of the adsorption bed 1 is connected to the evaporation chamber, allowing the gaseous adsorbent in the evaporation chamber to enter the adsorption chamber and be adsorbed by the adsorbent. The first valve group 9 can be a multi-way valve or a valve group formed by combining multiple switching valves. As shown in the attached figure, the outlet of the evaporation chamber is connected to the adsorption chamber of each adsorption bed 1 via multiple switching valves. It should be noted that there can be one evaporator 8 or multiple evaporators 8.

[0072] The condensing chamber of the condenser 7 is optionally connected to the adsorption chambers of different adsorption beds 1 in the plurality of adsorption beds 1 through the second valve group 10. The condenser 7 is also provided with a cooling fluid channel 16 for heat exchange with the gaseous adsorbent in the condensing chamber. The cooling fluid channel 16 mainly introduces external cooling water to absorb heat from the gaseous adsorbent in the condensing chamber, so that the gaseous adsorbent can be condensed into a liquid adsorbent, so that gaseous adsorbent can be continuously drawn from the corresponding adsorption chamber. When the adsorption bed 1 is in the desorption stage, the adsorption chamber of the adsorption bed 1 is connected to the condensing chamber. The second valve group 10 can be a multi-way valve or a valve group formed by a combination of multiple switching valves. As shown in the figure, the inlet of the condensing chamber is connected to the adsorption chamber of each adsorption bed 1 through multiple switching valves. It should be noted that there can be one condenser 7 or multiple condensers 7.

[0073] The heat source supply port 2 and the drive pump 6 are connected to the inlet of the electric heating device 4 through the liquid inlet three-way valve 11, so that the electric heating device 4 can obtain heat source fluid from the heat source supply port 2 or from the outlet of the drive pump 6.

[0074] Each heat exchange channel 3 is optionally connected to the outlet of the electric heating device 4 via a first multi-way valve 12, as shown in the attached diagram. If only two adsorption beds 1 are provided, the first multi-way valve 12 can be a three-way valve. The inlet of the first multi-way valve 12 is connected to the outlet of the electric heating device 4, and each outlet of the first multi-way valve 12 is connected to one end of each heat exchange channel 3. When an adsorption bed 1 enters the desorption stage (which is also the actual process of removing residues), the fluid from the outlet of the electric heating device 4 enters the corresponding heat exchange channel 3 through the first multi-way valve 12.

[0075] Each heat exchange channel 3 has its other end connected to the inlet valve of the second multi-way valve 13. The outlet valve of the second multi-way valve 13 is equipped with a valve body to selectively supply liquid to the heat source outlet 5 and the drive pump 6. That is, when heat source fluid flows through the heat exchange channel 3, the corresponding valve port of the heat exchange channel 3 needs to be opened so that the heat source fluid after heat release can flow out from the outlet valve of the second multi-way valve 13. When only two adsorption beds 1 are provided, the second multi-way valve 13 can be a three-way valve. The valve body can also be a three-way valve or a switching valve 17. Specifically, as shown in the attached figure, the outlet valve of the second multi-way valve 13 is connected to the inlet of the drive pump 6 and the switching valve 17 through a three-way structure 21, while the other end of the switching valve 17 is connected to the heat source outlet 5. When removing residue, the drive pump 6 is turned on, and the inlet of the electric heating device 4 is connected to the outlet of the drive pump 6 through the liquid inlet three-way valve 11, so that the high-temperature fluid pumped in by the drive pump 6 enters the electric heating device 4. After being heated, it enters the corresponding heat exchange channel 3 through the first multi-way valve 12, and then enters the three-way structure 21 through the liquid inlet of the second multi-way valve 13. At this time, the switch valve 17 is closed, so the fluid enters the inlet of the drive pump 6. When passing through an external heat source fluid, the drive pump 6 is turned off, and the heating function of the electric heating device 4 is also turned off. At this time, the fluid entering through the heat source supply port 2 enters the first multi-way valve 12 through the electric heating device 4, then enters the corresponding heat exchange channel 3, and then flows from the second multi-way valve 13 and the switch valve 17 to the heat source outlet 5.

[0076] One end of each heat exchange channel 3 is optionally connected to the cooling fluid supply port 18 via a third multi-way valve 14, and the other end of each heat exchange channel 3 is connected to a fourth multi-way valve 15 and a cooling fluid outlet 19. When configured as a dual-bed structure, the third multi-way valve 14 and the fourth multi-way valve 15 are preferably both three-way valves. That is, the inlet of each heat exchange channel 3 is connected to each outlet of the third multi-way valve 14, and the inlet of the third multi-way valve 14 is connected to the cooling fluid supply port 18; the outlet of each heat exchange channel 3 is connected to each inlet of the fourth multi-way valve 15, and the outlet of the fourth multi-way valve 15 is connected to the cooling fluid outlet 19.

[0077] The cooling fluid channel 16 is connected in series between the third multi-way valve 14 and the cooling fluid supply port 18, so that after the external cooling fluid enters from the cooling fluid supply port 18, it first enters the cooling fluid channel 16, absorbs heat from the gaseous adsorption working fluid in the condenser 7, and then enters the corresponding heat exchange channel 3 through the third multi-way valve 14, so that the adsorption bed 1 enters the adsorption stage.

[0078] Of course, the cooling fluid channel 16 and the heat exchange channel 3 can also be connected in parallel.

[0079] For ease of control, the first valve group 9, the second valve group 10, the inlet three-way valve 11, the first multi-way valve 12, the second multi-way valve 13, the third multi-way valve 14, the fourth multi-way valve 15, and the switching valve 17 are all electrically controlled valves, which are all connected to the controller and can be controlled by the controller; moreover, the control port of the electric heating device 4 and the control port of the drive pump 6 are both connected to the controller and can be controlled by the controller.

[0080] In some embodiments, as shown in the appendix Figure 2 As shown, the electric heating device 4 can also be installed between the liquid inlet three-way valve 11 and the above-mentioned three-way structure 21. In this case, the electric heating device 4 is connected in series between the three-way structure 21 and the liquid inlet three-way valve 11, and the drive pump 6 can be installed at the outlet end of the electric heating device 4.

[0081] Based on the adsorption refrigeration system provided in the above embodiments, the present invention also provides a server liquid cooling system. This server liquid cooling system includes any one of the adsorption refrigeration systems described in the above embodiments, and further includes a cold tower and a server liquid cooling device. The cold tower provides cooling water to the adsorption bed 1 of the adsorption refrigeration system, and the hot water outlet of the server liquid cooling device is connected to the heat source supply port 2 of the adsorption refrigeration system. Since this server liquid cooling system uses the adsorption refrigeration system described in the above embodiments, the beneficial effects of this server liquid cooling system are explained in the above embodiments. The cold tower can also supply liquid to the server liquid cooling device. A portion of the water from the cold tower enters the server liquid cooling device, absorbs heat to form a high-temperature fluid, and then enters the heat source supply port 2 to desorb the corresponding adsorption bed 1. A portion of the water from the cold tower directly enters the corresponding heat exchange channel 3 to adsorb the corresponding adsorption bed 1, and also enters the condenser 7 to cool the gaseous adsorbent in the condenser 7.

[0082] Based on the adsorption refrigeration system provided in the above embodiments, the present invention also provides a method for using an adsorption bed, which includes the following steps: heating the adsorption bed 1 by electric heating, and heating the bed to a temperature greater than the highest temperature of the heat source obtained within a predetermined time period. Since this method also uses electric heating, the beneficial effects of this method are explained in the above embodiments.

[0083] It should be noted that heating the adsorption bed 1 by electric heating can be achieved through the electric heating device 4 in the aforementioned adsorption refrigeration system, thereby heating the heat exchange fluid flowing in the heat exchange channel 3. Heating the fluid to a temperature higher than the highest temperature of the heat source within a predetermined time period is beneficial for removing residues accumulated over the predetermined time period, especially when no high-temperature fluid is obtained in the adsorption bed 1 for an extended period. For example, if the historical duration is three days and the highest temperature of the fluid entering through the heat source supply port 2 is 60 degrees Celsius, then the temperature of the adsorbent in the adsorption bed 1 or the fluid in the heat exchange channel 3, after being heated by electric heating, can be raised to 70 degrees Celsius to remove residues. Alternatively, the historical duration could be one week, and the highest temperature of the fluid entering through the heat source supply port 2 within that week would be Th; in this case, the temperature after electric heating could be T. h +C, where C can be 5℃, 20℃, 50℃, etc.

[0084] In some embodiments, the heating power of the electric heating device 4 can be gradually increased so that the temperature of the heat source fluid entering the adsorption bed 1 increases gradually, in order to avoid the problem that the internal air pressure will increase rapidly due to the heating temperature rising too high at once, thereby affecting the structural stability of the adsorbent.

[0085] To facilitate automatic control, multiple heating levels can be preset. During the heating process of the electric heating device 4 at the current heating level, the detection values ​​of the working fluid outlet flow rate and / or adsorption chamber pressure of the adsorption bed 1 are obtained in real time. When the detection value decreases to the preset value corresponding to the current power level, the heating power of the electric heating device 4 is controlled to increase to the corresponding value of the next heating level.

[0086] Embodiments of this application may also be computer-readable storage media storing computer program instructions that, when executed by a processor, cause the processor to perform the steps in the methods of using an adsorption bed according to various embodiments of this application as described above in this specification.

[0087] The computer-readable storage medium may be any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may, for example, include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: electrical connections having one or more wires, portable disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0088] 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.

[0089] 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. An adsorption refrigeration system, characterized by: It includes an adsorption bed (1) and a heat source supply port (2), the heat source supply port (2) being connected to the heat exchange channel (3) of the adsorption bed (1) for supplying heat source fluid to the heat exchange channel (3); the adsorption bed (1) is provided with an adsorbent to exchange heat with the heat source fluid in the heat exchange channel (3), and also includes an electric heating device (4) for heating the heat source fluid supplied to the heat exchange channel (3).

2. The sorptive refrigeration system of claim 1, wherein, The electric heating device (4) is disposed between the heat source supply port (2) and the heat exchange channel (3) for heating the heat source fluid to be entered into the heat exchange channel (3).

3. The sorptive refrigeration system of claim 2, wherein, The maximum heating temperature of the electric heating device (4) is not lower than the optimal desorption temperature of the adsorbent.

4. The sorptive refrigeration system of claim 1, wherein, It also includes a heat source outlet (5) and a drive pump (6). The outlet end of the heat exchange channel (3) is optionally connected to one of the heat source outlet (5) and the inlet of the electric heating device (4) through a first valve device. The drive pump (6) is used to realize the circulation of fluid between the electric heating device (4) and the heat exchange channel (3).

5. The sorptive refrigeration system of claim 2, wherein, It also includes a pressure detector for detecting the pressure of the adsorption chamber of the adsorption bed (1) and / or a flow detector for detecting the flow rate of the working fluid outlet of the adsorption chamber.

6. The sorptive refrigeration system of claim 5, wherein, The electric heating device (4) has at least two levels of heating power.

7. The sorptive refrigeration system of claim 5, wherein, It also includes a controller, which can control the electric heating device (4) to operate at a first power, and control the electric heating device (4) to start operating at a second power when the detection value detected by the pressure detector and / or flow detector in real time decreases to a first preset value, and stop operating at the second power after the detection value detected by the pressure detector and / or flow detector decreases to a second preset value; the second power is greater than the first power; The second preset flow rate is not greater than the first preset flow rate.

8. The sorptive refrigeration system according to any one of claims 1 to 7, characterized in that It also includes a second valve device, wherein one end of the heat exchange channel of each of the plurality of adsorption beds (1) is optionally connected to the heat source supply port (2) through the second valve device, and the other end is optionally connected to the heat source discharge port (5) through the second valve device.

9. The adsorption refrigeration system according to claim 8, characterized in that, It also includes a third valve device, a cooling fluid supply port (18) and a cooling fluid outlet (19). One end of the heat exchange channel (3) corresponding to the plurality of adsorption beds (1) is optionally connected to the cooling fluid supply port (18) through the third valve device, and the other end is optionally connected to the cooling fluid outlet (19) through the third valve device.

10. The adsorption refrigeration system according to claim 1, characterized in that, Includes a condenser (7) and an evaporator (8); The evaporation chamber of the evaporator (8) is optionally connected to the adsorption chambers of different adsorption beds (1) in the plurality of adsorption beds (1) through the first valve group (9). The evaporator (8) is also provided with a refrigeration fluid channel (20) for exchanging heat with the liquid adsorption working fluid in the evaporation chamber. The condenser (7) has its condensation chamber connected to the adsorption chambers of different adsorption beds (1) in the plurality of adsorption beds (1) via the second valve group (10). The condenser (7) is also provided with a cooling fluid channel (16) for exchanging heat with the gaseous adsorption working fluid in the condensation chamber. The heat source supply port (2) and the drive pump (6) are connected to the inlet of the electric heating device (4) through the liquid inlet three-way valve (11). One end of each heat exchange channel (3) is optionally connected to the outlet of the electric heating device (4) through the first multi-way valve (12). The other end of each heat exchange channel (3) is connected to the liquid inlet of the second multi-way valve (13). The liquid outlet of the second multi-way valve (13) is connected to a valve body to optionally supply liquid to the heat source outlet (5) and the drive pump (6). One end of each heat exchange channel (3) is optionally connected to the cooling fluid supply port (18) via a third multi-way valve (14), and the other end of each heat exchange channel (3) is connected to the cooling fluid outlet (19) via a fourth multi-way valve (15); The cooling fluid passage (16) is connected in series between the third multi-way valve (14) and the cooling fluid supply port (18).

11. A server liquid cooling system, comprising a cooling tower and server liquid cooling equipment, characterized in that, It also includes the adsorption refrigeration system as described in any one of claims 1-10, wherein the cold tower is capable of providing cooling fluid to the adsorption bed of the adsorption refrigeration system, and the hot water outlet of the server liquid cooling equipment is connected to the heat source supply port of the adsorption refrigeration system.

12. A method of using an adsorption bed, characterized in that, include: The adsorption bed is heated by electric heating to a temperature greater than the highest temperature obtained from the heat source within a historical period of time, wherein the historical period of time is not less than three adsorption cycles.

13. The method of using the adsorption bed according to claim 12, characterized in that, The heating of the adsorption bed by electric heating is as follows: The heat source fluid supplied to the adsorption bed (1) is heated by an electric heating device (4).

14. The method of using the adsorption bed according to claim 12, characterized in that, The heating of the heat source fluid entering the adsorption bed (1) by the electric heating device (4) includes: The heating power of the electric heating device (4) is gradually increased so that the temperature of the heat source fluid entering the adsorption bed (1) increases step by step.

15. The method of using the adsorption bed according to claim 13, characterized in that, The stepwise increase of the heating power of the electric heating device (4) includes: Under the current heating setting, the detection values ​​of the working fluid outlet flow rate and / or adsorption chamber pressure of the adsorption bed (1) are obtained in real time, and when the detection value decreases to the preset value corresponding to the current power setting, the heating power of the electric heating device (4) is controlled to increase to the corresponding value of the next heating setting.

16. A computer-readable storage medium, characterized in that, Used to store a computer program, which, when executed by a processor, implements the method of using the adsorption bed as described in any one of claims 12 to 14.

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