Adsorption refrigeration temperature control system, liquid cooling system and adsorption refrigeration temperature control method

Abstract

This invention discloses an adsorption refrigeration temperature control system, comprising: an adsorption bed, wherein an adsorption chamber of the adsorption bed is provided with an adsorbent; a cryogenic fluid supply port for supplying cryogenic fluid to a cooling object to absorb heat from the cooling object; a cold storage device, which is connected to the cryogenic fluid supply port to supply cryogenic fluid to the cold storage device; and an evaporator, wherein the evaporation chamber of the evaporator is used to supply gaseous adsorbent to the adsorption chamber, and is further provided with a cryogenic fluid channel capable of exchanging heat with the liquid adsorbent in the evaporation chamber, the cryogenic fluid channel being connected to the cold storage device to supply cryogenic fluid to the cold storage device. The above-described adsorption refrigeration temperature control system can effectively solve the problem of poor temperature control performance in adsorption refrigeration systems. This invention also discloses a liquid cooling system including the above-described adsorption refrigeration device and an adsorption refrigeration temperature control method.

Description

Technical Field

[0001] This invention relates to the field of adsorption refrigeration technology, and more specifically, to an adsorption refrigeration temperature control system, a liquid cooling system including the above-mentioned adsorption refrigeration temperature control system, and an adsorption refrigeration temperature control method. Background Technology

[0002] Currently, data center air conditioning units mainly rely on the traditional method of converting electrical energy into mechanical energy for cooling. The high power consumption and heat generated by data centers, as well as the inexhaustible natural cooling sources, are not fully utilized. This waste heat utilization cooling solution can make full use of the heat of the data center, without the need for compressor cooling, and can still provide the cooling capacity required by the data center.

[0003] In the process of realizing this invention, the inventors discovered that the prior art has at least the following problems: In the adsorption refrigeration system, due to the different adsorption states at different stages of the adsorption phase, such as the different adsorption saturation, the temperature of the connected prepared freezing fluid is not uniform, which is not conducive to supplying it to the object to be cooled. Summary of the Invention

[0004] In view of this, the first objective of the present invention is to provide an adsorption refrigeration device that can effectively solve the problem of instability during the adsorption stage of the adsorption refrigeration device. The second objective of the present invention is to provide a liquid cooling system including the above-mentioned adsorption refrigeration device. The third objective of the present invention is to provide an adsorption refrigeration temperature control method.

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

[0006] An adsorption refrigeration temperature control system, comprising:

[0007] An adsorption bed, wherein the adsorption chamber of the adsorption bed is provided with an adsorbent;

[0008] A chilled fluid supply port is used to supply chilled fluid to the object being cooled in order to absorb heat from the object being cooled;

[0009] A cold storage device, which is connected to the chilled fluid supply port to supply chilled fluid to the chilled fluid supply port.

[0010] An evaporator is provided, wherein the evaporation chamber of the evaporator is used to supply gaseous adsorbent to the adsorption chamber, and a cryogenic fluid channel is provided to exchange heat with the liquid adsorbent in the evaporation chamber. The cryogenic fluid channel can be connected to the cold storage device to supply cryogenic fluid to the cold storage device.

[0011] In the aforementioned adsorption refrigeration system, in at least one application scenario, the refrigerant supply port is connected to the cooling channel inlet of the object being cooled. When the adsorption bed connected to the evaporator chamber enters the adsorption stage, the adsorbent inside the evaporator evaporates under low pressure in the adsorption chamber, and then absorbs heat from the refrigerant in the refrigerant channel to prepare the refrigerant. After the prepared refrigerant flows out of the refrigerant outlet, it can first enter the cold storage device, where it can mix with the refrigerant already stored. The mixed refrigerant can then flow from the cold storage device back to the refrigerant supply port to supply the object being cooled. In the aforementioned adsorption refrigeration system, in at least one application state, the refrigerant obtained at the evaporator first enters the cold storage device for mixing, and then is supplied to the object being cooled. This can result in a more uniform temperature of the refrigerant supplied to the object being cooled. This is because the adsorption efficiency of the adsorption chamber connected to the evaporator is not consistent throughout the adsorption stage. This causes fluctuations in the evaporator's evaporation efficiency within each adsorption stage, resulting in fluctuations in the outlet temperature of the prepared refrigerant. These fluctuations correspond to different adsorption stages, and therefore, the fluctuations are regular throughout the refrigeration process. By first passing the prepared refrigerant through a cold storage device for mixing, these fluctuations can be effectively mitigated, resulting in a stable cooling efficiency for the object being cooled and allowing for better cooling. Furthermore, if the return fluid from the object being cooled flows back into the refrigerant channel, the evaporator can maintain stable operation. In summary, the above-described adsorption refrigeration temperature control system effectively solves the problem of poor temperature control in adsorption refrigeration systems.

[0012] In some technical solutions, a first connecting device that is connected in parallel with the cold storage device and can be shut off is also included. One end of the first connecting device is connected to the outlet of the chilled fluid channel, and the other end is connected to the chilled fluid supply port.

[0013] Some technical solutions also include a chilled fluid return port, which is used to return the chilled fluid that has absorbed heat from the cooled object and can be connected to the inlet of the chilled fluid channel.

[0014] In some technical solutions, a second closable connecting device is also included, with one end of the second connecting device connected to the outlet of the cold storage device and the other end connected to the inlet of the refrigeration fluid channel.

[0015] Some technical solutions also include a drive pump for driving the fluid flow in the refrigeration fluid channel.

[0016] In some technical solutions, the inlet of the drive pump is connected to the refrigerated fluid return port and the outlet of the second connecting device, and the outlet of the drive pump can be optionally connected to the inlet of the refrigerated fluid channel and the inlet of the cold storage device through a valve device.

[0017] In some technical solutions, the first connecting device includes a first switching valve, the second connecting device includes a second switching valve, and a third switching valve is provided at the refrigerant return port; the outlet of the refrigerant channel is connected to the inlet of the cold storage device through a fourth switching valve; the outlet of the refrigerant channel, the inlet of the first switching valve, and the inlet of the fourth switching valve are connected through a three-way structure; the valve device is a fifth switching valve, one end of which is connected between the outlet of the drive pump and the inlet of the refrigerant channel, and the other end is connected between the fourth switching valve and the inlet of the cold storage device.

[0018] In some technical solutions, the first switching valve, the third switching valve, and the fourth switching valve are all flow regulating valves.

[0019] Some technical solutions include a condenser, a first cooling fluid interface, and a second cooling fluid interface;

[0020] The first end of each heat exchange channel is optionally connected to the heat source supply port via a first multi-way valve, and the second end of each heat exchange channel is optionally connected to the heat source discharge port via a second multi-way valve.

[0021] The evaporation chamber of the evaporator can optionally be connected to the adsorption chambers corresponding to different adsorption beds in the plurality of adsorption beds through a first valve group;

[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 first end of each heat exchange channel is optionally connected to the first cooling fluid interface via a third multi-way valve, and the second end of each heat exchange channel is optionally connected to the second cooling fluid interface via a fourth multi-way valve, so that cooling fluid can be optionally introduced.

[0024] To achieve the second objective mentioned above, the present invention also provides a liquid cooling system comprising any of the aforementioned adsorption refrigeration devices, including a cooling object and a cooling heat exchange channel capable of exchanging heat with a heating element in the cooling object. One end of the cooling heat exchange channel is connected to the chilled fluid supply port of the adsorption refrigeration device, and the other end is connected to the chilled fluid return port of the adsorption refrigeration device. Since the aforementioned adsorption refrigeration device possesses the above-mentioned technical effects, an adsorption refrigeration device having this adsorption refrigeration device should also possess corresponding technical effects.

[0025] To achieve the third objective mentioned above, the present invention also provides a temperature control method for an adsorption refrigeration system. Specifically, this method includes the following steps: introducing the cryogenic fluid prepared by the adsorption refrigeration system into a cold storage tank to mix with the existing cryogenic fluid in the cold storage tank for storage; and supplying the stored cryogenic fluid in the cold storage tank to the object being cooled. Since this temperature control method, like one of the aforementioned methods of using the adsorption refrigeration temperature control system, utilizes the storage function of a cold storage device to mitigate fluctuations in the cryogenic fluid, this adsorption refrigeration system temperature control method should also possess corresponding technical advantages. Attached Figure Description

[0026] 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.

[0027] Figure 1 This is a schematic diagram of the liquid cooling system provided in an embodiment of the present invention.

[0028] The following labels are shown in the attached diagram:

[0029] 11. Adsorption bed; 2. Heat source supply port; 3. Heat exchange channel; 4. First cooling fluid interface; 6. Heat source outlet; 5. Second cooling fluid interface; 7. Condenser; 8. Evaporator; 9. First valve group; 10. Second valve group; 11. Refrigeration fluid supply port; 12. First multi-way valve; 13. Second multi-way valve; 14. Third multi-way valve; 15. Fourth multi-way valve; 16. Cooling channel; 17. Refrigeration fluid channel; 18. Refrigeration fluid return port; 19. Cold storage device; 20. Cooling object; 21. First connecting device; 22. Three-way structure; 23. Second connecting device; 24. Drive pump; 25. First switching valve; 26. Second switching valve; 27. Third switching valve; 28. Fourth switching valve; 29. ​​Fifth switching valve; 30. Sixth switching valve. Detailed Implementation

[0030] This invention discloses an adsorption refrigeration device that can effectively solve the problem of instability during the adsorption stage of an adsorption refrigeration device.

[0031] 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.

[0032] Please see Figure 1 , Figure 1 This is a schematic diagram of the liquid cooling system provided in an embodiment of the present invention.

[0033] In some embodiments, an adsorption refrigeration temperature control system is provided. Specifically, the adsorption refrigeration temperature control system mainly includes an adsorption bed 1, a cryogenic fluid supply port 11, a cold storage device 19, and an evaporator 8.

[0034] The adsorption chamber of adsorption bed 1 is equipped with an adsorbent, and the working fluid used in conjunction with the adsorbent can flow through the adsorption chamber and the evaporation chamber of evaporator 8, as well as through condenser 7. The working fluid and adsorbent are combined to form a working fluid pair. In an adsorption refrigeration system, multiple sets of working fluid pairs can be provided. One adsorbent can correspond to multiple working fluids, or multiple adsorbents can correspond to one working fluid.

[0035] For adsorption bed 1, there are two main working states: adsorption and desorption, which are generally carried out in stages. In the adsorption state, a low-temperature fluid is used to cool adsorption bed 1, allowing the adsorbent in adsorption bed 1 to adsorb the gaseous working medium, thus ensuring continuous adsorption capacity of the adsorption chamber until the adsorbent reaches a preset saturation state. Taking physical adsorption as an example, the gaseous working medium will liquefy into a liquid state, maintaining a low-pressure state within the adsorption chamber to continuously draw in gaseous working medium, such as continuously adsorbing the gaseous working medium from evaporator 8, allowing evaporator 8 to continuously evaporate and absorb heat. Of course, adsorption bed 1 can also obtain gaseous working medium from external sources instead of from evaporator 8. In the desorption state, a high-temperature fluid is generally used to heat the adsorption bed 1, causing the adsorbent in the adsorbent to desorb from the adsorbent and re-form a gaseous adsorbent. The gaseous adsorbent enters the condenser 7, where it is liquefied into a liquid adsorbent. Alternatively, the adsorbent can be discharged to the outside.

[0036] The adsorption bed 1 typically has a heat exchange channel 3 for heat exchange with the adsorbent in the adsorption chamber. This heat exchange channel 3 refers to a channel capable of carrying at least a high-temperature fluid (heat source fluid) during the desorption phase of the adsorption bed 1. During the adsorption phase, the heat exchange channel 3 can be closed or used to carry a low-temperature fluid. The heat exchange channel 3 can exchange heat with the adsorbent, ensuring that during the desorption phase, a high-temperature fluid flows through it, keeping the entire adsorption chamber at a high temperature. After absorbing heat, the adsorbent desorbs a gaseous adsorbent, which absorbs heat from the high-temperature fluid in the heat exchange channel 3. This gaseous adsorbent can be discharged to the outside or into the condensation chamber of the condenser 7, where it is condensed back into a gaseous adsorbent. It should be noted that a heat exchange channel 3 can be provided to alternately circulate high-temperature fluid and low-temperature fluid; or a heat exchange channel 3 can be provided specifically for low-temperature fluid, while another channel can be provided specifically for high-temperature fluid; or only a heat exchange channel 3 can be provided for either high-temperature or low-temperature fluid, and the adsorption or desorption stage of the adsorption bed 1 is not carried out through fluid, but through other heat-conducting structures, such as metal heat-conducting components, for heat dissipation.

[0037] Evaporator 8 is the evaporator of the adsorption refrigeration system. The evaporation chamber of evaporator 8 supplies gaseous adsorbent to the adsorption chamber. It also includes a cryogenic fluid channel 17 for heat exchange with the liquid adsorbent in the evaporation chamber. The cryogenic fluid channel 17 can directly penetrate the evaporation chamber for direct heat exchange through the pipe wall. In operation, the cryogenic fluid introduced through the cryogenic fluid channel 17 transfers heat to the liquid adsorbent in the evaporation chamber. The liquid adsorbent evaporates into a gaseous state, carrying away the heat. The gaseous adsorbent enters the adsorption chamber, releases heat, and is absorbed by the adsorbent in the chamber. The released heat is then absorbed and transferred out through a heat transfer conductor or fluid.

[0038] A chilled fluid supply port 11 is used to supply chilled fluid to the cooling object 20 for heat absorption from the cooling object 20. A chilled fluid return port can also be provided to guide the chilled fluid that has absorbed heat from the cooling object 20 back. In use, a cooling heat exchange channel can be provided, which can be used to exchange heat with the cooling object 20, primarily receiving heat from the cooling object 20. The cooling heat exchange channel can be integrated into the cooling object 20, or into the adsorption refrigeration device; the specific configuration can be determined according to needs. The inlet end of the cooling heat exchange channel is connected to the chilled fluid supply port 11, and the outlet end is connected to the chilled fluid return port 18. The cooling object 20 can be an air conditioning unit for heat exchange with ambient air, or a heat-generating device such as a server.

[0039] The outlet of the cold storage device 19 can be connected to the chilled fluid supply port 11 to supply chilled fluid to the chilled fluid supply port 11. Specifically, the cold storage device 19 can be directly connected to the chilled fluid supply port 11 through a channel, or optionally through a valve device. The specific connection method is not required, as long as the connection structure allows the chilled fluid discharged from the outlet of the cold storage device 19 to enter the chilled fluid supply port 11 for further supply to the cooling object 20 when needed. The cold storage device 19 generally has multiple openings, which serve as inlets and outlets respectively. Of course, for some cold storage devices 19, the inlet and outlet can be the same opening.

[0040] The cold storage device 19 can store chilled fluid in two ways: one is to receive a lower-temperature fluid and discharge it when needed, meaning the inflow and outflow are not required to be synchronized; the other is to receive external fluid while simultaneously discharging a corresponding volume of fluid. Since the discharged fluid is a mixed fluid, its temperature will be relatively high. After continuous operation for a period of time, the fluid in the cavity of the cold storage device 19 will become increasingly closer to the external fluid. The cold storage device 19 can be a cold storage tank or an energy storage tank.

[0041] The chilled fluid passage 17 can be connected to the cold storage device 19 to supply chilled fluid to the cold storage device 19. The chilled fluid passage 17 and the cold storage device 19 can be directly connected or indirectly connected, such as indirectly connected through a valve. When a valve is provided, connection can be achieved when necessary, but at least when needed, the chilled fluid flowing out of the chilled fluid passage 17 can flow into the cold storage device 19. The fluid entering the chilled fluid passage 17 can be an external fluid or a fluid returning from the cooled object 20; in this case, a corresponding chilled fluid return port 18 can be provided.

[0042] In the aforementioned adsorption refrigeration system, in at least one application scenario, the refrigerant supply port 11 is connected to the inlet of the channel of the object being cooled 20. When the adsorption bed 1 connected to the evaporation chamber of the evaporator 8 enters the adsorption stage, the adsorbent inside the evaporator 8 evaporates under low pressure in the adsorption chamber, and then absorbs heat from the refrigerant in the refrigerant channel 17 to prepare the refrigerant. After the prepared refrigerant flows out of the refrigerant outlet, it can first enter the cold storage device 19, where it can mix with the refrigerant stored in the cold storage device 19. The mixed refrigerant can then flow from the cold storage device 19 back to the refrigerant supply port 11 to supply the object being cooled 20 for cooling. In the aforementioned adsorption refrigeration system, in at least one application state, the refrigerant obtained at the evaporator 8 can first enter the cold storage device 19 for mixing, and then be supplied to the object being cooled 20. This can make the temperature of the refrigerant supplied to the object being cooled 20 more uniform. This is because, due to the adsorption chamber connected to evaporator 8, the adsorption efficiency of evaporator 8 is not consistent throughout the adsorption stage. This causes fluctuations in the evaporation efficiency of evaporator 8 within each adsorption stage, resulting in fluctuations in the outlet temperature of the prepared cryogenic fluid. These fluctuations correspond to different adsorption stages, and therefore, the fluctuations are regular throughout the refrigeration process. By first passing the prepared cryogenic fluid through the cold storage device 19 for mixing, the fluctuations can be effectively mitigated, ensuring a stable cooling efficiency for the object being cooled 20 and allowing for better cooling. Furthermore, if the refluxed fluid from the object being cooled 20 returns to the cryogenic fluid channel 17, the evaporator 8 can maintain stable operation. In summary, the above-described adsorption refrigeration temperature control system effectively solves the problem of poor temperature control in adsorption refrigeration systems.

[0043] In some embodiments, considering the possibility of unstable cooling in the cooling object 20, a first connecting device 21 that is parallel to and closable with the cold storage device 19 can be further provided. One end of the first connecting device 21 is connected to the outlet of the chilled fluid channel 17, and the other end is connected to the chilled fluid supply port 11. The first connecting device 21 being closable means that it can be in an open or closed state. When the first connecting device 21 is in the open state, the chilled fluid flowing out of the cooling fluid channel outlet can enter the chilled fluid supply port 11 through the first connecting device 21. Because of the parallel connection, it can bypass the cold storage device 19, allowing for direct fluid supply. When the first connecting device 21 is in the closed state, the chilled fluid flowing out of the chilled fluid channel outlet can no longer flow to the chilled fluid supply port 11 through the first connecting device 21; in this case, it can be indirectly transmitted through the cold storage device 19. It should be noted that, if necessary, the chilled fluid flowing out of the chilled fluid channel 17 can be diverted so that a portion flows through the cold storage device 19 and then to the chilled fluid supply port 11, while the other portion flows directly to the chilled fluid supply port 11 through the first connecting device 21 which is in the open state.

[0044] With the above settings, when it is not necessary to remove fluctuations, or for other reasons, such as when the object being cooled 20 allows for fluctuations in the chilled fluid, the first connecting device 21 can be kept in the open state to reduce the overall flow resistance and improve the cooling efficiency.

[0045] In some embodiments, a corresponding chilled fluid return port 18 is generally provided, which can be used to guide back the chilled fluid that has absorbed heat from the cooled object 20, and can supply the returned fluid to the chilled fluid channel 17 through the inlet connected to the chilled fluid channel 17.

[0046] This is because, due to the working nature of the evaporator 8 in the adsorption refrigeration system, the temperature of the fluid entering the chilled fluid channel 17 should not be too high; generally, the temperature entering the channel is lower than the ambient temperature. Therefore, a chilled fluid return port 18 can be provided to recover the fluid that absorbs heat from the object being cooled 20. The temperature rise of this fluid can be controlled by the flow rate so that the temperature rise still meets the needs of the chilled fluid channel 17, that is, meets the evaporation needs of the evaporator 8.

[0047] In use, the cooling heat exchange channel of the object being cooled 20 can be connected between the chilled fluid supply port 11 and the chilled fluid return port 18, so that the chilled fluid enters the cooling heat exchange channel of the object being cooled 20 from the chilled fluid supply port 11, and then absorbs heat in the cooling heat exchange channel, causing the chilled fluid to heat up. The heated chilled fluid will flow into the chilled fluid return port 18, and can then re-enter the chilled fluid channel 17 to release heat and cool down, thus forming a cycle. It should be noted that the chilled fluid return port 18 being able to connect to the inlet of the chilled fluid channel 17 means that at least one operating state is required for the two to be connected to transfer fluid; other states are also possible.

[0048] In some embodiments, considering that the object being cooled 20 may have a stage where cooling is not required, while the evaporator 8 is still in an evaporation state, if the heat source fluid supplied to the adsorption bed 1 is continuously supplied, the adsorption refrigeration system will continue to cool. That is, the evaporator 8 continues to evaporate. To avoid wasting cooling capacity, a closable second connecting device 23 can be provided, wherein one end of the second connecting device 23 is connected to the outlet of the cold storage device 19, and the other end is connected to the inlet of the chilled fluid channel 17. This allows the fluid in the cold storage device 19 to re-enter the chilled fluid channel 17 through the second connecting channel for heat release and cooling, and then flow back to the cold storage device 19. This cycle allows the cold storage device 19 to accumulate more and more cooling capacity for future use.

[0049] It should be noted that the second connecting device 23 being closable means that it has at least two states: one is that it is open, and the other is that it is closed. When the second connecting device 23 is open, the fluid from the outlet of the cold storage device 19 can enter the inlet of the chilled fluid channel 17 through the second connecting device 23; while when the second connecting device 23 is closed, the fluid from the outlet of the cold storage device 19 cannot enter the inlet of the chilled fluid channel 17 through the second connecting device 23.

[0050] The first connecting device 21 and the second connecting device 23 can each be a two-way switching valve, or they can be combined into a directional valve. Generally, the opening states of the first connecting device 21 and the second connecting device 23 need to be staggered, so they can be combined into a single directional valve. Of course, the first connecting device 21 and the second connecting device 23 can also be combined with other valves to form other valve structures.

[0051] In some embodiments, to ensure the flow of chilled fluid in locations such as the cold storage device 19 and the chilled fluid channel 17, and for ease of actuation, the adsorption refrigeration temperature control system can be equipped with a drive pump 24 to drive the fluid flow in the chilled fluid channel 17. Alternatively, the drive pump 24 can be integrated inside the cooling object 20, such as by connecting it in series with the cooling heat exchange channel. Considering different operating states, multiple drive pumps 24 can be provided, or only one drive pump 24 can be provided, with different operating states achieved through channel switching.

[0052] In some embodiments, the inlet of the drive pump 24 may be connected to the chilled fluid return port 18 and the outlet of the second communication device 23, and the outlet of the drive pump 24 may optionally be connected to the inlet of the chilled fluid passage 17 and the inlet of the cold storage device 19 via a valve device.

[0053] In the first operating state, with the second connecting device 23 and the first connecting device 21 closed, the outlet of the drive pump 24 is connected only to the inlet of the chilled fluid channel 17 via a valve device, while being disconnected from the inlet of the cold storage device 19; the inlet of the drive pump 24 is connected to the chilled fluid return port 18. At this time, the chilled fluid sequentially passes through the cold storage device 19, the chilled fluid supply port 11, the cooling object 20, the chilled fluid return port 18, the drive pump 24, and the chilled fluid channel 17. The cooling object 20 can raise the temperature of the flowing chilled fluid, thus having a cooling effect on the cooling object 20; alternatively, it can keep the temperature of the flowing chilled fluid essentially constant, in which case the cold storage device 19 is storing cold.

[0054] In the second operating state, the second connecting device 23 is closed and the first connecting device 21 is opened. At this time, the outlet of the drive pump 24 is connected only to the inlet of the chilled fluid channel 17 via a valve device, and disconnected from the inlet of the cold storage device 19. The inlet of the drive pump 24 is connected to the chilled fluid return port 18. Then, the chilled fluid sequentially passes at least partially through the first connecting device 21, the chilled fluid supply port 11, the object being cooled 20, the chilled fluid return port 18, the drive pump 24, and the chilled fluid channel 17. The object being cooled 20 can be directly cooled at this time, while the cold storage device 19 does not store cold or stores only a small amount of cold. A small portion of the stored cold, such as a portion of the fluid from the chilled fluid channel 17, enters the first connecting device 21, while another portion enters the cold storage device 19 to exchange for a higher-temperature fluid.

[0055] In the third operating state, the second connecting device 23 is opened and the first connecting device 21 is closed. At this time, the outlet of the drive pump 24 is connected to the inlet of the chilled fluid channel 17 via a valve device, but disconnected from the inlet of the cold storage device 19. The inlet of the drive pump 24 is connected to the outlet of the cold storage device 19 via the second connecting device 23. The chilled fluid then sequentially passes at least partially through the cold storage device 19, the second connecting device 23, the drive pump 24, and the chilled fluid channel 17 before returning to the cold storage device 19. At this time, the cold storage device 19 stores cold, and the chilled fluid supply port 11 no longer outputs chilled fluid.

[0056] In the fourth operating state, the second connecting device 23 and the first connecting device 21 are closed. At this time, the outlet of the drive pump 24 is connected to the inlet of the cold storage device 19 via a valve device; the inlet of the drive pump 24 is connected to the refrigerant return port 18. The refrigerant then sequentially passes at least partially through the cold storage device 19, the refrigerant supply port 11, the object being cooled 20, the refrigerant return port 18, and the drive pump 24, before returning directly to the cold storage device 19 through the outlet of the drive pump 24. At this time, the fluid in the refrigerant channel 17 does not flow, meaning the evaporator 8 does not evaporate. Meanwhile, the cold storage device 19 cools the object being cooled 20.

[0057] Specifically, in order to facilitate the realization of the above multiple working states, the relevant parts can be equipped with valve devices and corresponding channels. The valve devices are not required and can be valve bodies formed by one or more combinations of multi-way valves, on / off valves, and directional valves.

[0058] As attached Figure 1 As shown, the first connecting device 21 may include a first switching valve 25, the second connecting device 23 may include a second switching valve 26, and a third switching valve 27 may be provided at the chilled fluid return port; the outlet of the chilled fluid channel 17 is connected to the inlet of the cold storage device 19 through a fourth switching valve 28; the outlet of the chilled fluid channel 17, the inlet of the first switching valve 25, and the inlet of the fourth switching valve 28 are connected through a three-way structure 22; the valve device is a fifth switching valve 29, one end of which is connected between the outlet of the drive pump 24 and the inlet of the chilled fluid channel 17, and the other end is connected between the fourth switching valve 28 and the inlet of the cold storage device 19. Generally, a sixth switching valve 3030 is also provided at the outlet of the cold storage device 19.

[0059] In the first operating state described above, the fourth switch valve 28, the sixth switch valve 30, and the third switch valve 27 are open, the drive pump 24 is activated, while the first switch valve 25 and the second switch valve 26 are both closed, meaning the first connecting device 21 and the second connecting device 23 are both closed, and the fifth switch valve 29 is closed. In this operating state, the refrigerant, after flowing out of the refrigerant channel 17, enters the cold storage device 19 through the fourth switch valve 28, then enters the cooling object 20 through the sixth switch valve 30, and flows from the cooling object 20 to the drive pump 24 through the third switch valve 27, and then flows from the drive pump 24 back into the refrigerant channel 17.

[0060] In the second operating state described above, the first switching valve 25 is open, the third switching valve 27 is open, the drive pump 24 is activated, while the second switching valve 26, the fourth switching valve 28, the fifth switching valve 29, and the sixth switching valve 30 are all closed. In this operating state, the refrigerant, after flowing out of the refrigerant channel 17, enters the cooling object 20 through the first switching valve 25, and then flows from the cooling object 20 to the drive pump 24 through the third switching valve 27, and then flows from the drive pump 24 back into the refrigerant channel 17.

[0061] In the third operating state described above, the fourth switch valve 28, the sixth switch valve 30, and the second switch valve 26 are open, the drive pump 24 is activated, while the first switch valve 25, the third switch valve 27, and the fifth switch valve 29 are all closed. In this operating state, the refrigerant, after flowing out of the refrigerant channel 17, enters the cold storage device 19 through the fourth switch valve 28, then enters the second connecting device 23 through the sixth switch valve 30, and flows to the inlet of the drive pump 24 through the second switch valve 26, and then flows from the drive pump 24 into the refrigerant channel 17.

[0062] In the fourth operating state described above, the fifth switch valve 29, the sixth switch valve 30, and the third switch valve 27 are open, and the drive pump 24 is activated, while the first switch valve 25, the second switch valve 26, and the fourth switch valve 28 are all closed. In this operating state, the refrigerant flows out of the drive pump 24, passes through the fifth switch valve 29, enters the cold storage device 19, then passes through the sixth switch valve 30 to the cooling object 20, and then flows from the cooling object 20 to the drive pump 24 through the third switch valve 27, and then from the drive pump 24 to the cold storage device 19. Because the first switch valve 25 and the fourth switch valve 28, which are connected to the refrigerant channel 17, are both closed, the refrigerant channel 17 cannot flow. Therefore, no matter how high the outlet pressure of the drive pump 24 is, the fluid cannot flow in the refrigerant channel 17 and is forced to flow towards the fifth switch valve 29.

[0063] In some embodiments, both the first switching valve 25 and the fourth switching valve 28 can be flow regulating valves. This allows for a fifth operating state, a combination of the first and second operating states. The fluid exiting the refrigerant channel 17 is divided into a first portion and a second portion. The first portion of refrigerant enters the refrigerant supply port 11 via the fourth switching valve 28, the cold storage device 19, and the sixth switching valve 30; while the second portion of refrigerant directly enters the refrigerant supply port via the second connecting device 23. By adjusting the flow rate, the ratio of the first and second portions is different, resulting in different temperatures at the refrigerant supply port 11. This ratio can be adjusted according to the temperature of the refrigerant return port 18, stabilizing the temperature of the refrigerant return port 18. Simultaneously, the cold storage power of the cold storage device 19 changes.

[0064] In some embodiments, the system generally includes a condenser 7, in which the adsorbent flows through the condensation chamber of the condenser 7, the evaporation chamber of the evaporator 8, and the adsorption chamber of the adsorption bed 1 to form an adsorption refrigeration system.

[0065] Specifically, the evaporation chamber of the evaporator 8 can be selectively connected to the adsorption chambers corresponding to different adsorption beds 1 in multiple adsorption beds 1 through the first valve group 9. The evaporator 8 is also provided with a refrigeration fluid channel 17 for heat exchange with the liquid adsorption working fluid in the evaporation chamber.

[0066] 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 channel 16 for heat exchange with the gaseous adsorption working fluid in the condensing chamber.

[0067] Generally, to achieve continuous refrigeration, multiple adsorption beds 1 are connected in parallel, with at least some adsorption beds 1 having staggered desorption and adsorption time periods. For a specific adsorption bed 1, when entering the adsorption stage, it needs to be connected to the evaporation chamber through the first valve group 9 and disconnected from the condensation chamber through the second valve group 10; conversely, when entering the desorption stage, it needs to be disconnected from the evaporation chamber through the first valve group 9 and connected to the condensation chamber through the second valve group 10. The first valve group 9 and the second valve group 10 can be reversing valves, multi-way valves, or valve groups formed by combining multiple on / off valves. Alternatively, the first valve group 9 and the second valve group 10 can be combined into a single reversing valve.

[0068] The condenser 7's condensing chamber receives the gaseous adsorbent discharged from the adsorption chamber of the adsorption bed 1. When the heat source fluid enters the adsorption bed 1, it decomposes into a gaseous adsorbent, which then enters the condensing chamber and releases heat. This heat is released into the cooling channel 16 of the condenser 7 and carried out by the fluid in the cooling channel 16. After releasing heat, the gaseous adsorbent forms a liquid adsorbent, thus continuously receiving the gaseous adsorbent discharged from the adsorption chamber.

[0069] In some embodiments, the first end of each heat exchange channel 3 is optionally connected to the heat source supply port 2 via a first multi-way valve 12, and the second end of each heat exchange channel 3 is optionally connected to the heat source discharge port 6 via a second multi-way valve 13, so that heating fluid can be optionally introduced.

[0070] Each heat exchange channel 3 has its first end connected to each outlet of the first multi-way valve 12, and its inlet connected to the heat source supply port 2. The inlet of the first multi-way valve 12 can optionally be connected to any one of the outlets. Similarly, each heat exchange channel 3 has its second end connected to each inlet of the second multi-way valve 13, and its outlet connected to the heat source discharge port 6. The outlet of the second multi-way valve 13 can optionally be connected to any one of the inlets.

[0071] In some embodiments, a first cooling fluid interface 4 and a second cooling fluid interface 5 may be further provided. Specifically, the first end of each heat exchange channel 3 may be optionally connected to the first cooling fluid interface 4 via a third multi-way valve 14, and the second end of each heat exchange channel 3 may be optionally connected to the second cooling fluid interface 5 via a fourth multi-way valve 15, so that cooling fluid can be optionally introduced. At this time, the cooling fluid used to cool the adsorbent in the adsorption stage and the heating fluid used to heat the adsorbent in the desorption stage can share the heat exchange channel 3, so that the heating fluid (heat source fluid) and cooling fluid alternately flow into the heat exchange channel 3.

[0072] The first cooling fluid interface 4 serves as the cooling fluid supply port, and the second cooling fluid interface 5 serves as the cooling fluid discharge port. The first end 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 first cooling fluid interface 4. The inlet of the third multi-way valve 14 can optionally be connected to any one of the outlets. The second end 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 second cooling fluid interface 5. The outlet of the fourth multi-way valve 15 can optionally be connected to any one of the inlets.

[0073] This allows the heat exchange channel 3 to be circulated with high-temperature fluid during the desorption phase, i.e., connected between the first main interface and the second main interface, and with low-temperature fluid during the adsorption phase, i.e., connected between the first cooling fluid interface 4 and the second cooling fluid interface 5.

[0074] For ease of control, the first valve group 9, the second valve group 10, the inlet three-way valve, 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 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 and the control port of the drive pump 24 are also connected to the controller and can be controlled by the controller.

[0075] In some embodiments, unless otherwise stated or contradicted, the adsorption refrigeration system comprises an adsorption working fluid circulation system consisting of an adsorption bed 1, a condenser 7, and an evaporator 8, which may specifically constitute a multi-stage circulation system, a return circulation system, a heat wave circulation system, or other circulation systems.

[0076] Based on the adsorption refrigeration device provided in the above embodiments, the present invention also provides a liquid cooling system. This liquid cooling system includes any one of the adsorption refrigeration devices described in the above embodiments, comprising a cooling object 20 and a cooling heat exchange channel capable of exchanging heat with a heating device in the cooling object 20. Since this liquid cooling system uses the adsorption refrigeration device described in the above embodiments, the beneficial effects of this liquid cooling system are explained in the above embodiments.

[0077] Based on the adsorption refrigeration device provided in the above embodiments, the present invention also provides a temperature control method for an adsorption refrigeration system, which mainly includes the following steps:

[0078] Step S100: The cryogenic fluid prepared by the adsorption refrigeration system is introduced into the cold storage tank so that it can be mixed with the existing cryogenic fluid in the cold storage tank for storage.

[0079] By introducing it into an existing cold storage tank, the temperature fluctuation of the outlet fluid can be reduced through mixing.

[0080] Step S200: Supply the cryogenic fluid stored in the cold storage tank to the object being cooled 20.

[0081] Because the mixed fluid exhibits minimal fluctuations, the outlet fluid temperature fluctuation of the cold storage tank is significantly less than that of the refrigerant produced by the adsorption refrigeration system. Here, "fluctuation" primarily refers to the fluctuation within one adsorption cycle. This results in a better cooling effect on the object 20.

[0082] 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.

[0083] 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 temperature control system, characterized in that, include: An adsorption bed (1) is provided with an adsorbent in its adsorption chamber; A chilled fluid supply port (11) is provided for supplying chilled fluid to the object being cooled (20) to absorb heat from the object being cooled (20); A cold storage device (19) is connected to the chilled fluid supply port (11) to supply chilled fluid to the chilled fluid supply port (11); Evaporator (8), the evaporation chamber of the evaporator (8) is used to supply gaseous adsorbent to the adsorption chamber, and is also provided with a cryogenic fluid channel (17) that can exchange heat with the liquid adsorbent in the evaporation chamber. The cryogenic fluid channel (17) can be connected to the cold storage device (19) so as to supply cryogenic fluid to the cold storage device (19).

2. The adsorption refrigeration temperature control system according to claim 1, characterized in that, It also includes a first connecting device (21) that is connected in parallel with the cold storage device (19) and can be shut off. One end of the first connecting device (21) is connected to the outlet of the refrigeration fluid channel (17), and the other end is connected to the refrigeration fluid supply port (11).

3. The adsorption refrigeration temperature control system according to claim 2, characterized in that, It also includes a chilled fluid return port (18) for returning chilled fluid that has absorbed heat from the cooled object (20) and is connected to the inlet of the chilled fluid channel (17).

4. The adsorption refrigeration temperature control system according to claim 3, characterized in that, It also includes a closable second communication device (23), one end of which is connected to the outlet of the cold storage device (19), and the other end of which is connected to the inlet of the refrigeration fluid channel (17).

5. The adsorption refrigeration temperature control system according to claim 4, characterized in that, It also includes a drive pump (24) for driving fluid flow in the refrigerated fluid channel (17).

6. The adsorption refrigeration temperature control system according to claim 5, characterized in that, The inlet of the drive pump (24) is connected to the refrigerated fluid return port (18) and the outlet of the second connecting device (23). The outlet of the drive pump (24) can be optionally connected to the inlet of the refrigerated fluid channel (17) and the inlet of the cold storage device (19) through a valve device.

7. The adsorption refrigeration temperature control system according to claim 6, characterized in that, The first connecting device (21) includes a first switching valve (25), the second connecting device (23) includes a second switching valve (26), and a third switching valve (27) is provided at the refrigeration fluid return port (18); the outlet of the refrigeration fluid channel (17) is connected to the inlet of the cold storage device (19) through a fourth switching valve (28); the outlet of the refrigeration fluid channel (17), the first switching valve (25), and the inlet of the fourth switching valve (28) are connected through a three-way structure (22); the valve device is a fifth switching valve (29), one end of the fifth switching valve (29) is connected between the outlet of the drive pump (24) and the inlet of the refrigeration fluid channel (17), and the other end is connected between the fourth switching valve (28) and the inlet of the cold storage device (19).

8. The adsorption refrigeration temperature control system according to claim 7, characterized in that, Both the first switching valve (25) and the fourth switching valve (28) are flow regulating valves.

9. The adsorption refrigeration temperature control system according to any one of claims 1-8, characterized in that, Includes a condenser (7), a first cooling fluid interface (4), and a second cooling fluid interface (5); The first end of the heat exchange channel (3) of each of the adsorption beds (1) is optionally connected to the heat source supply port (2) through the first multi-way valve (12), and the second end of each of the heat exchange channels (3) is optionally connected to the heat source discharge port (6) through the second multi-way valve (13). The evaporation chamber of the evaporator (8) can be optionally connected to the adsorption chambers corresponding to different adsorption beds (1) in the plurality of adsorption beds (1) through the first valve group (9); 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 for exchanging heat with the gaseous adsorption working fluid in the condensation chamber. The first end of each heat exchange channel (3) is optionally connected to the first cooling fluid interface (4) via a third multi-way valve (14), and the second end of each heat exchange channel (3) is optionally connected to the second cooling fluid interface (5) via a fourth multi-way valve (15) so that cooling fluid can be optionally introduced.

10. A liquid cooling system, comprising a cooling object (20) and a cooling heat exchange channel capable of exchanging heat with a heating device in the cooling object (20), characterized in that, Includes the adsorption refrigeration device as described in any one of claims 1-9; one end of the cooling heat exchange channel is connected to the refrigeration fluid supply port (11) of the adsorption refrigeration device, and the other end is connected to the refrigeration fluid return port (18) of the adsorption refrigeration device.

11. A method for temperature control in adsorption refrigeration, characterized in that, Includes the following steps: The cryogenic fluid prepared by the adsorption refrigeration system is introduced into the cold storage tank so that it can be mixed with the existing cryogenic fluid in the cold storage tank for storage. The chilled fluid stored in the cold storage tank is supplied to the object being cooled (20).

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