Adsorption type cooler and control method

Abstract

The invention discloses an adsorption cooler and a control method, the adsorption cooler comprises a first heat exchanger, a second heat exchanger, a first adsorption-desorption bed, a second adsorption-desorption bed and a converter, the first heat exchanger is in heat transfer connection with the first adsorption-desorption bed, and the second heat exchanger is in heat transfer connection with the second adsorption-desorption bed; the first adsorption-desorption bed is communicated with the second adsorption-desorption bed, and two ends of the converter are respectively connected with the first adsorption-desorption bed and the second adsorption-desorption bed so as to realize position exchange of the first adsorption-desorption bed and the second adsorption-desorption bed and enable the first heat exchanger to be in heat transfer connection with the second adsorption-desorption bed after position exchange; and the second heat exchanger is in heat transfer connection with the first adsorption and desorption bed after transposition. The first adsorption-desorption bed and the second adsorption-desorption bed are periodically switched through the converter, continuous circulating cooling of a local heat source of heating equipment is achieved, the operation efficiency and reliability of the adsorption cooler are improved, and meanwhile the device is small in size, simple in structure and convenient to install.

Description

Technical Field

[0001] This invention relates to the field of refrigeration technology, and in particular to an adsorption cooler and a control method. Background Technology

[0002] With the rapid development of the information age, the computing power and load demands of data centers continue to rise, placing higher demands on efficient, intelligent, and environmentally friendly cooling technologies. Traditional data center cooling systems mainly rely on air cooling and water cooling technologies to cool the heat-generating equipment in the room at a macroscopic level. However, these technologies are difficult to specifically address the cooling needs of localized concentrated heat sources (such as high-density servers and control circuit boards), resulting in low heat dissipation efficiency of localized heat sources, which in turn affects the operational stability and energy efficiency ratio of the equipment.

[0003] While the adsorption cooling technology disclosed in CN 120018446A attempts to utilize waste heat from data centers through a waste heat recovery system, its design focuses on macroscopic energy recovery and cannot directly and precisely cool local heat sources. Furthermore, traditional cooling systems generally suffer from large size, high noise, and high energy consumption, and rely on complex components such as compressors, limiting their flexibility and adaptability in localized heat dissipation scenarios. Summary of the Invention

[0004] The purpose of this invention is to provide an adsorption cooler and control method, which aims to solve the problem that traditional data center air-cooling and water-cooling systems cannot cool localized concentrated heat sources in equipment.

[0005] This invention provides an adsorption cooler, comprising: a first heat exchanger, a second heat exchanger, a first adsorption bed, a second adsorption bed, and a converter. The first heat exchanger is heat-transferringly connected to the first adsorption bed, and the second heat exchanger is heat-transferringly connected to the second adsorption bed. The first and second adsorption beds are connected in communication. The two ends of the converter are respectively connected to the first and second adsorption beds to achieve positional interchange of the first and second adsorption beds, thereby enabling the first heat exchanger to be heat-transferringly connected to the second adsorption bed after the interchange, and the second heat exchanger to be heat-transferringly connected to the first adsorption bed after the interchange.

[0006] Furthermore, the heat transfer directions of the first heat exchanger and the second heat exchanger are opposite.

[0007] Furthermore, it also includes: a pipeline, the two ends of which are respectively connected to the first adsorption-desorption bed and the second adsorption-desorption bed.

[0008] Furthermore, it also includes: a first filter element and a second filter element, which are respectively installed in the two ends of the pipeline.

[0009] Furthermore, it also includes: a valve, which is installed in the pipeline to enable or disable the first adsorption-desorption bed and the second adsorption-desorption bed.

[0010] Furthermore, it also includes: a first pressure sensor and a second pressure sensor, both of which are installed on the pipeline, and the first pressure sensor and the second pressure sensor are respectively located on both sides of the valve.

[0011] Furthermore, it also includes a gas storage tank, which is connected to the pipeline to store the desorbed refrigerant.

[0012] Furthermore, it also includes: a heat insulation plate, which is disposed between the first adsorption-desorption bed and the second adsorption-desorption bed.

[0013] This invention also provides a control method for an adsorption cooler, wherein one of the first adsorption bed and the second adsorption bed is disposed near a heat source, and the other of the first adsorption bed and the second adsorption bed is disposed near a cold source; the control method includes:

[0014] When the refrigerant desorbed from either the first adsorption bed or the second adsorption bed is adsorbed by the other, the positions of the first adsorption bed and the second adsorption bed are interchanged by the converter to achieve periodic circulation of the refrigerant.

[0015] Furthermore, the step of exfoliating the refrigerant from either the first adsorption bed or the second adsorption bed and then adsorbing it by the other, thereby swapping the positions of the first and second adsorption beds through the converter to achieve periodic refrigerant circulation, includes:

[0016] The valve is closed, and a first pressure value is detected by the pressure sensor near the heat source in the first pressure sensor and the second pressure sensor.

[0017] When the first pressure value meets the first condition, the valve is opened, and at the same time, the second pressure value is detected by the pressure sensor near the cold source in the first pressure sensor and the second pressure sensor.

[0018] If the second pressure value meets the second condition, the valve is closed, and the positions of the first adsorption desorption bed and the second adsorption desorption bed are interchanged through the converter.

[0019] The first condition is: the first pressure value is greater than the first predetermined pressure value, and the first pressure value remains within the first predetermined range for a first predetermined time.

[0020] The second condition is: the second pressure value is less than the second predetermined pressure value, the second pressure value remains within the second predetermined range for a second predetermined time, and the absolute value of the difference between the second pressure value and the first pressure value is greater than the predetermined difference.

[0021] This invention discloses an adsorption cooler and its control method. The adsorption cooler includes a first heat exchanger, a second heat exchanger, a first adsorption bed, a second adsorption bed, and a converter. The first heat exchanger is heat-transferringly connected to the first adsorption bed, and the second heat exchanger is heat-transferringly connected to the second adsorption bed. The first and second adsorption beds are connected in communication. The two ends of the converter are respectively connected to the first and second adsorption beds to achieve positional interchange of the first and second adsorption beds, and to enable heat-transferring between the first and second adsorption beds. This also allows the first heat exchanger to connect heat-transferringly with the repositioned second adsorption bed, and the second heat exchanger to connect heat-transferringly with the repositioned first adsorption bed. This invention achieves continuous cyclic cooling of local heat sources in heat-generating equipment by periodically switching between the first and second adsorption beds via the converter, effectively improving the operating efficiency and reliability of the adsorption cooler. Furthermore, the device is small in size, simple in structure, and easy to install. Moreover, the device does not use a compressor, resulting in low noise and low energy consumption during cyclic operation, providing a good user experience. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of an adsorption cooler.

[0024] Figure 2 This is a schematic diagram of an adsorption cooler system;

[0025] Figure 3 A schematic diagram illustrating an engineering application of an adsorption cooler;

[0026] Figure 4 for Figure 3 A partial view of A in the middle;

[0027] Figure 5 This is a flowchart illustrating the control method for an adsorption cooler.

[0028] Explanation of the labels in the diagram:

[0029] 1. First heat exchanger; 2. Second heat exchanger; 3. First adsorption-desorption bed; 4. Second adsorption-desorption bed; 5. Converter; 6. Piping; 7. First filter element; 8. Second filter element; 9. Valve; 10. First pressure sensor; 11. Second pressure sensor; 12. Gas storage tank; 13. Heat insulation plate; 14. Cooler top cover; 15. Converter protective shell; 16. Cold pipe. Detailed Implementation

[0030] 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, not all, of the embodiments of the present invention. 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.

[0031] It should be understood that, when used in this specification and the appended claims, the terms “comprising” and “including” indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0032] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0033] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0034] Please see Figure 1 and 2 This embodiment provides an adsorption cooler, including: a first heat exchanger 1, a second heat exchanger 2, a first adsorption bed 3, a second adsorption bed 4, and a converter 5. The first heat exchanger 1 is heat-transferringly connected to the first adsorption bed 3, and the second heat exchanger 2 is heat-transferringly connected to the second adsorption bed 4. The first adsorption bed 3 and the second adsorption bed 4 are connected in communication. The two ends of the converter 5 are respectively connected to the first adsorption bed 3 and the second adsorption bed 4 to realize the interchange of the positions of the first adsorption bed 3 and the second adsorption bed 4, and to make the first heat exchanger 1 heat-transferringly connected to the second adsorption bed 4 after the interchange, and the second heat exchanger 2 heat-transferringly connected to the first adsorption bed 3 after the interchange.

[0035] Specifically, the first heat exchanger 1 is positioned adjacent to the first adsorption bed 3, and heat transfer between them is achieved through a heat conduction structure. The second heat exchanger 2 is also connected to the second adsorption bed 4 via a heat conduction structure. The first adsorption bed 3 and the second adsorption bed 4 are connected to form a refrigerant flow channel. The two ends of the converter 5 are fixedly connected to the bottoms of the first adsorption bed 3 and the second adsorption bed 4, respectively. Its rotation axis is located at the symmetrical center of the two adsorption beds. A drive device (such as a motor) controls the converter 5 to rotate 180°, thereby causing the positions of the first adsorption bed 3 and the second adsorption bed 4 to interchange. This allows the first heat exchanger 1 to be heat-transferringly connected to the repositioned second adsorption bed 4, and the second heat exchanger 2 to be heat-transferringly connected to the repositioned first adsorption bed 3. Both the first adsorption bed 3 and the second adsorption bed 4 are filled with adsorbent (such as activated carbon, molecular sieves, etc.) and refrigerant (such as water vapor, methanol, etc.). When the first heat exchanger 1 absorbs heat from the heat source, it transfers the heat to the first adsorption bed 3, causing the refrigerant within the first adsorption bed 3 to be desorbed. The desorbed refrigerant then flows to the second adsorption bed 4, while the cold source absorbs heat from the second adsorption bed 4 through the second heat exchanger 2, thereby lowering the temperature of the second adsorption bed 4. When the temperature drops to a certain level, the refrigerant is adsorbed by the adsorbent within the second adsorption bed 4, thus realizing the refrigerant adsorption process. After the adsorbent in the second adsorption bed 4 adsorbs a certain amount of refrigerant, the converter 5 swaps the positions of the first adsorption bed 3 and the second adsorption bed 4, and the first heat exchanger 1 is connected to the swapped second adsorption bed 4 for heat transfer, while the second heat exchanger 2 is connected to the swapped first adsorption bed 3 for heat transfer, thus entering the next desorption and adsorption cycle, and repeating this process to achieve continuous cyclic adsorption refrigeration.

[0036] This embodiment uses a converter 5 to periodically switch between the first adsorption bed 3 and the second adsorption bed 4, achieving continuous cyclic cooling of the local heat source of the heating equipment. This effectively improves the operating efficiency and reliability of the adsorption cooler. Furthermore, the device is small in size, simple in structure, and easy to install. Moreover, the device does not use a compressor, resulting in low noise and low energy consumption during cyclic operation, providing a good user experience.

[0037] In this embodiment, the heat transfer directions of the first heat exchanger 1 and the second heat exchanger 2 are opposite.

[0038] The heat transfer directions of the first heat exchanger 1 and the second heat exchanger 2 are opposite. Specifically, when the first heat exchanger 1 is placed near a heat source and the second heat exchanger 2 is placed near a cold source, the function of the first heat exchanger 1 is to transfer heat from an external heat source (such as a local heat source of a heating device) to one of the first adsorption bed 3 or the second adsorption bed 4, driving the adsorbent to release refrigerant; while the function of the second heat exchanger 2 is to transfer heat from the other of the first adsorption bed 3 or the second adsorption bed 4 to the external environment, allowing the adsorbent to adsorb the refrigerant and achieve cooling. The heat transfer directions of the two are opposite: the first heat exchanger 1 operates in a "heat input" mode, providing heat to one of the first adsorption bed 3 or the second adsorption bed 4; the second heat exchanger 2 operates in a "heat output" mode, removing heat from the other of the first adsorption bed 3 or the second adsorption bed 4. Alternatively, when the first heat exchanger 1 is placed near a cold source and the second heat exchanger 2 is placed near a heat source, the function of the second heat exchanger 2 is to transfer heat from an external heat source (such as a local heat source of a heating device) to one of the first adsorption bed 3 or the second adsorption bed 4, driving the adsorbent to release refrigerant; while the function of the first heat exchanger 1 is to transfer heat from the other of the first adsorption bed 3 or the second adsorption bed 4 to the external environment, allowing the adsorbent to adsorb refrigerant and achieve cooling. The heat transfer directions of the two are opposite: the second heat exchanger 2 is in "heat input" mode, providing heat to one of the first adsorption bed 3 or the second adsorption bed 4; the first heat exchanger 1 is in "heat output" mode, removing heat from the other of the first adsorption bed 3 or the second adsorption bed 4.

[0039] The opposite heat transfer directions of the first heat exchanger 1 and the second heat exchanger 2 ensure continuous circulating cooling. After switching by the converter 5, the positions of the first adsorption-desorption bed 3 and the second adsorption-desorption bed 4 are interchanged, while the first heat exchanger 1 and the second heat exchanger 2 always maintain the opposite state of "one heat transfer for heating and the other heat absorption for cooling", ensuring that the adsorption and desorption processes alternate and continue to run, thereby achieving continuous cooling of the heat source.

[0040] In this embodiment, it also includes: a pipeline 6, the two ends of which are connected to the first adsorption-desorption bed 3 and the second adsorption-desorption bed 4, respectively.

[0041] During the desorption process, the refrigerant released from the first adsorption desorption bed 3 can flow directly to the second adsorption desorption bed 4 through the pipeline 6, avoiding refrigerant leakage or diffusion, ensuring efficient transfer of refrigerant to the adsorption side, and guaranteeing the stable progress of the adsorption process.

[0042] In this embodiment, it also includes: a first filter element 7 and a second filter element 8, which are respectively installed in the two ends of the pipeline 6.

[0043] The first filter element 7 and the second filter element 8 are respectively installed at both ends of the pipeline 6 to intercept particulate matter or impurities in the refrigerant flow process. Specifically, taking the first adsorption bed 3 located near a heat source and the second adsorption bed 4 located near a cold source, with the first filter element 7 located at the end of the pipeline 6 connected to the first adsorption bed 3 and the second filter element 8 located at the end of the pipeline 6 connected to the second adsorption bed 4 as an example, the first filter element 7 is located at the outlet end of the first adsorption bed 3 and is used to filter out tiny particles or adsorbent debris in the gaseous refrigerant desorbed from the first adsorption bed 3; the second filter element 8 is located at the inlet end of the second adsorption bed 4 and is used to filter impurities in the refrigerant gas entering the adsorption bed through the solenoid valve. Both the first filter element 7 and the second filter element 8 are made of corrosion-resistant materials (such as stainless steel filter screens or ceramic filter elements) with a pore size range of 0.1-10μm to ensure that they can effectively intercept impurities without causing significant resistance to the refrigerant flow. In the adsorption-desorption cycle, when one of the adsorption-desorption beds releases refrigerant, the first filter element 7 intercepts adsorbent dust that may be carried away by the airflow, preventing it from entering the gas storage tank 12 or subsequent pipeline 6. When the refrigerant enters another adsorption-desorption bed through a solenoid valve, the second filter element 8 further filters residual impurities, preventing contamination of the adsorbent surface and thus maintaining adsorption efficiency. Furthermore, the filter element is installed in close contact with the inner wall of pipeline 6, and airtightness is ensured through sealing rings or welding processes to prevent unfiltered gas from bypassing the filter element. This design, through a two-stage filtration mechanism, ensures the cleanliness of the refrigerant circulation system, extends the adsorbent's service life, and reduces the risk of system failure due to impurities clogging the system.

[0044] In this embodiment, a valve 9 is also included. The valve 9 is installed in the pipeline 6 to enable or disable the first adsorption-desorption bed 3 and the second adsorption-desorption bed 4.

[0045] A valve 9 is installed inside pipeline 6. This valve 9 controls the connection or closure between the first adsorption bed 3 and the second adsorption bed 4. When the first adsorption bed 3 is undergoing adsorption, as the refrigerant inside is continuously desorbed, the pressure sensor on the desorption side detects that the pressure value has reached a preset condition. At this point, valve 9 opens, connecting pipeline 6, and the desorbed refrigerant flows through pipeline 6 to the second adsorption bed 4, which is in an adsorption state. When the second adsorption bed 4 completes adsorption, and the pressure sensor on the adsorption side detects that the pressure value meets the preset pressure condition, valve 9 closes, blocking the connection between the first and second adsorption beds 3 and 4. After valve 9 has been closed for a period of time, converter 5 drives the two beds to exchange positions, entering the next cycle. Valve 9 then controls the opening and closing of pipeline 6 again based on the new pressure detection result.

[0046] Among them, valve 9 can be a solenoid valve, or an electric valve, pneumatic valve, hydraulic valve, etc. Different types of valve 9 can be selected according to specific working conditions and requirements.

[0047] Furthermore, it also includes: a first pressure sensor 10 and a second pressure sensor 11, both of which are installed on the pipeline 6, and the first pressure sensor 10 and the second pressure sensor 11 are located on both sides of the valve 9 respectively.

[0048] A first pressure sensor 10 and a second pressure sensor 11 are installed on pipeline 6, located on opposite sides of valve 9. Taking an example where the first pressure sensor 10 is installed on the side of pipeline 6 closer to the first adsorption bed 3, and the second pressure sensor 11 is installed on the side of pipeline 6 closer to the second adsorption bed 4, when the first adsorption bed 3 is undergoing adsorption, refrigerant is delivered to the second adsorption bed 4 through pipeline 6. The first pressure sensor 10 detects the pressure value on the side of valve 9 closer to the first adsorption bed 3, and the second pressure sensor 11 detects the pressure value on the side of valve 9 closer to the second adsorption bed 4. When the first pressure sensor 10 detects a pressure greater than a set value and remains stable for a certain period, valve 9 opens; when the second pressure sensor 11 detects a pressure less than a set value, remains stable for a certain period, and the difference between the pressure detected by the second pressure sensor 11 and the pressure detected by the first pressure sensor 10 meets a preset condition, valve 9 closes. After valve 9 is closed and stabilized for a period of time, converter 5 drives the first adsorption bed 3 and the second adsorption bed 4 to exchange positions. The first pressure sensor 10 and the second pressure sensor 11 continue to detect the pressure on both sides of valve 9 in the new state, providing data for the next valve 9 on / off control.

[0049] In this embodiment, it also includes a gas storage tank 12, which is connected to the pipeline 6 to store the desorbed refrigerant.

[0050] The gas storage tank 12 is connected to the pipeline 6 and is used to temporarily store the released refrigerant. Specifically, the gas storage tank 12 ensures that the released gaseous refrigerant can be contained during the desorption process, while preventing abnormal pressure due to excessive storage. Figure 1 and Figure 2 After the adsorption-desorption bed completes refrigerant desorption, the desorption side delivers the gaseous refrigerant to the storage tank 12. The solenoid valve opens, connecting the entire refrigeration system. The adsorption side continuously adsorbs refrigerant, and the refrigerant in the system and storage tank 12 continuously migrates towards the low-pressure side until adsorption is complete. The storage tank 12 is made of corrosion-resistant metal (such as stainless steel) and has an internal pressure relief valve to handle abnormally high pressure situations. Through the buffering effect of the storage tank 12, system pressure fluctuations can be stabilized, refrigerant circulation efficiency can be improved, and the increased equipment stress or energy consumption caused by instantaneous flow rate changes can be reduced.

[0051] In some embodiments, there are two gas storage tanks 12, both of which are connected to the pipeline 6 and are located on both sides of the valve 9.

[0052] The adsorption cooler has two gas storage tanks 12, both connected to pipeline 6 and located on either side of the solenoid valve. Specifically, the first gas storage tank is connected upstream of the solenoid valve (near the first adsorption bed 3) to temporarily store the gaseous refrigerant released from the first adsorption bed 3 during the desorption process; the second gas storage tank is connected downstream of the solenoid valve (near the second adsorption bed 4) to store the refrigerant desorbed from the second adsorption bed 4. When the first adsorption bed 3 is desorbing, the first gas storage tank opens and the second gas storage tank closes. Figure 1 and Figure 2 After the first adsorption-desorption bed 3 completes refrigerant desorption, the desorption side transports the gaseous refrigerant to the first storage tank for storage; the solenoid valve opens, connecting the entire refrigeration system, and the adsorption side continuously adsorbs refrigerant. The refrigerant in the system and the first storage tank continuously migrates to the low-pressure side until adsorption is complete. When the second adsorption-desorption bed 4 desorbs, the second storage tank opens, and the first storage tank closes, combined with... Figure 1 and Figure 2 After the second adsorption and desorption bed 4 completes the refrigerant desorption, the desorption side transports the gaseous refrigerant to the second storage tank for storage; the solenoid valve opens, connecting the entire refrigeration system, and the adsorption side continuously adsorbs refrigerant. The refrigerant in the system and the second storage tank continuously migrates to the low-pressure side until adsorption is complete. This dual storage tank 12 design balances system pressure fluctuations and improves refrigerant circulation efficiency through segmented storage and reflux mechanisms, while also reducing the flow unevenness problem caused by the capacity limitation of a single storage tank 12.

[0053] In some embodiments, there are two valves 9, which are respectively located on both sides of the gas storage tank 12 where it is connected to the pipeline 6.

[0054] Combination Figure 1 and Figure 2A valve 9 is provided on each side of the connection between the gas storage tank 12 and the pipeline 6. When the first adsorption bed 3 desorbs refrigerant, the valve 9 on the side closer to the first adsorption bed 3 opens, and the refrigerant enters the gas storage tank 12 for storage through the pipeline 6. At this time, the valve 9 on the side closer to the second adsorption bed 4 closes to prevent the refrigerant from flowing to the second adsorption bed 4 in advance. When the pressure on the side of the first adsorption bed 3 reaches the corresponding pressure condition (detected by the first pressure sensor 10), the valve 9 on the side closer to the second adsorption bed 4 opens, while the valve 9 on the side closer to the first adsorption bed 3 remains open, and the entire refrigeration system is connected. The adsorption side continuously adsorbs refrigerant, and the refrigerant in the system and the gas storage tank 12 continuously migrates to the low-pressure side until adsorption is completed. When the converter 5 drives the two to interchange positions, when the second adsorption bed 4 desorbs the refrigerant, the valve 9 on the side closer to the second adsorption bed 4 opens, and the refrigerant enters the storage tank 12 through the pipeline 6. At this time, the valve 9 on the side closer to the first adsorption bed 3 closes to prevent the refrigerant from flowing to the first adsorption bed 3 in advance. When the pressure on the side of the second adsorption bed 4 reaches the corresponding pressure condition (detected by the second pressure sensor 11), the valve 9 on the side closer to the first adsorption bed 3 opens, and at the same time, the valve 9 on the side closer to the second adsorption bed 4 remains open, and the entire refrigeration system is connected. The adsorption side continuously adsorbs the refrigerant, and the refrigerant in the system and the storage tank 12 continuously migrates to the low-pressure side until adsorption is completed.

[0055] The dual-valve design 9 achieves precise management of refrigerant flow by controlling the connection between the gas storage tank 12 and the pipeline 6 in stages. At the same time, it supports independent maintenance or isolation operation of the gas storage tank 12, improving the flexibility and reliability of system operation.

[0056] In this embodiment, a heat insulation plate 13 is also included, which is disposed between the first adsorption and desorption bed 3 and the second adsorption and desorption bed 4.

[0057] A heat insulation plate 13 is disposed between the first adsorption bed 3 and the second adsorption bed 4 to block direct heat conduction between them. Specifically, the heat insulation plate 13 is a 5-10mm thick polyurethane foam or vacuum insulation board, the cross-sectional dimensions of which are perfectly matched with the contact surfaces of the first adsorption bed 3 and the second adsorption bed 4, and is tightly fitted to the sides of the two adsorption beds through a sealing structure (such as a silicone sealing strip or welding process). When the first adsorption bed 3 and the second adsorption bed 4 exchange identities by rotating 180° through the converter 5, the heat insulation plate 13 remains between them, ensuring that the heat exchange path between them is effectively isolated regardless of the current operating state of the first adsorption bed 3 and the second adsorption bed 4. For example, during the desorption phase of the first adsorption bed 3, when the first adsorption bed 3 absorbs heat and releases refrigerant through the first heat exchanger 1, the heat insulation plate 13 prevents this heat from being transferred to the adjacent second adsorption bed 4. Similarly, during the adsorption phase of the second adsorption bed 4, when the second adsorption bed 4 releases adsorption heat through the second heat exchanger 2, the heat insulation plate 13 prevents this heat from being transferred back to the first adsorption bed 3. Furthermore, the installation position of the heat insulation plate 13 is aligned with the rotation axis of the converter 5 to prevent the heat insulation plate 13 from shifting or breaking due to rotation. This design significantly reduces heat loss in the desorption-adsorption cycle by physically isolating the heat conduction path, improving system energy efficiency, and simultaneously reducing the performance degradation of the adsorbent due to thermal interference, thus extending the service life of the device.

[0058] In this embodiment, it also includes: a cooler top cover 14, which is part of the outer shell of the equipment and is the top of the outer shell of the equipment. It is connected to the first heat exchanger 1 and the second heat exchanger 2 in the middle part of the shell.

[0059] The cooler top cover 14, as part of the equipment's outer casing, forms the top structure of the equipment housing and connects to the first heat exchanger 1 and the second heat exchanger 2 in the middle section of the housing. Specifically, the cooler top cover 14 is made of metal or composite material, and its lower surface is bonded to the upper end faces of the first heat exchanger 1 and the second heat exchanger 2 via a thermal pad or welding process, forming an upper enclosed structure. The cooler top cover 14 protects the components of the piping 6 and sensors, while also providing wiring for the components.

[0060] In this embodiment, it also includes: a converter protective shell 15, which is a part of the outer shell of the equipment and is a fastener connected to the first heat exchanger 1 and the second heat exchanger 2 in the middle part of the shell.

[0061] Specifically, the converter protective housing 15 is made of high-strength metal or composite material, and its structure is annular or semi-enclosed, arranged around the rotation axis of the converter 5. It is fixed to the bottom of the equipment housing by screws or clips, forming a lower closed structure. The lower closed structure can prevent external dust, impurities or physical collisions from interfering with the internal components, while the converter protective housing 15 can provide wiring for the converter 5.

[0062] Furthermore, the outer surface of the converter protective housing 15 smoothly transitions with the top cooler cover 14 and side walls of the equipment casing, forming a unified appearance that facilitates equipment installation and maintenance. This design, through the integrated connection of the protective housing, achieves both physical protection of the converter 5 and coordinated support for the heat exchanger structure, while optimizing the equipment's spatial layout and aesthetic integrity.

[0063] In some engineering application implementations, such as Figure 3 As shown, this is a simple two-dimensional diagram of a data center equipment room. The equipment room is an enclosed space consisting of a server room air conditioner, multiple equipment cabinets and devices, and multiple adsorption coolers. The server room air conditioner supplies cold air to the equipment room, where the cold air is cooled by passing through the equipment cabinets, carrying away hot air before returning to the server room air conditioner. In this embodiment, the adsorption coolers can be fixed in place by brackets or embedded in the equipment cabinets, such as... Figure 4 As shown, the heat-generating device dissipates heat from the heat exchanger near the desorption side, transferring heat to one of the adsorption desorption beds for desorption. The desorbed refrigerant is transferred to another adsorption desorption bed, cooled by the heat exchanger on the adsorption side, and then re-adsorbed. The adsorbed refrigerant returns to the desorption side via converter 5 for recirculation. The types of heat exchangers on the desorption and adsorption sides are not specified. Preferably, the heat exchanger on the desorption side should have a structure with good heat concentration, while the heat exchanger on the adsorption side can be water-cooled or air-cooled, for example... Figure 3 During the project implementation, multiple heat exchangers on the adsorption side of the cooler can be connected through cold pipe 16. The beginning of cold pipe 16 can be supplied with air from the computer room air conditioner and the cold air is delivered to the heat exchanger on the adsorption side at the end position by changing the pipe diameter. The specific optimization is based on the user's project.

[0064] Please see Figure 5 This embodiment also provides a control method for an adsorption cooler, wherein one of the first adsorption bed and the second adsorption bed is disposed near a heat source, and the other of the first adsorption bed and the second adsorption bed is disposed near a cold source; the control method includes:

[0065] When the refrigerant desorbed from either the first adsorption bed or the second adsorption bed is adsorbed by the other, the positions of the first adsorption bed and the second adsorption bed are interchanged by a converter, thereby realizing the periodic circulation of the refrigerant.

[0066] Specifically, the first adsorption-desorption bed is positioned near a heat source (such as a localized heat source in a high-density server) to absorb heat and desorb the refrigerant; the second adsorption-desorption bed is positioned near a cold source (such as a water-cooling or air-cooling system) to release heat and adsorb the refrigerant. After the first adsorption-desorption bed completes its refrigerant desorption, the released refrigerant enters the second adsorption-desorption bed through a pipeline and is adsorbed. At this point, the control system triggers a converter to rotate 180°, swapping the positions of the first and second adsorption-desorption beds: the original first adsorption-desorption bed moves to the vicinity of the cold source to become a new adsorption bed, and the original second adsorption-desorption bed moves to the vicinity of the heat source to become a new desorption bed.

[0067] Furthermore, when the refrigerant desorbed from either the first or second adsorption bed is adsorbed by the other, the positions of the first and second adsorption beds are interchanged via a converter to achieve periodic refrigerant circulation, including:

[0068] The valve is closed, and the first pressure value is detected by the pressure sensor near the heat source in the first and second pressure sensors.

[0069] When the first pressure value meets the first condition, the valve is opened, and at the same time the second pressure value is detected by the pressure sensor near the cold source in the first pressure sensor and the second pressure sensor.

[0070] If the second pressure value meets the second condition, the valve is closed, and the positions of the first adsorption desorption bed and the second adsorption desorption bed are interchanged through the converter.

[0071] The first condition is: the first pressure value is greater than the first predetermined pressure value, and the first pressure value remains within the first predetermined range for a first predetermined time.

[0072] The second condition is: the second pressure value is less than the second predetermined pressure value, the second pressure value remains within the second predetermined range for a second predetermined time, and the absolute value of the difference between the second pressure value and the first pressure value is greater than the predetermined difference.

[0073] Specifically, when the first adsorption-desorption bed is desorbing, the system first closes the solenoid valve to cut off the connection between the desorption side and the adsorption side. At this time, the control system detects the first pressure value P1 through the first pressure sensor (the pressure sensor near the heat source side) and determines whether it meets the first condition: P1 is greater than the first predetermined pressure value P. m1And it remains within the first predetermined range [Pa, Pb] for time T1. If the condition is met, the control system opens the solenoid valve, connecting the first and second adsorption / desorption beds, and the refrigerant enters the second adsorption / desorption bed through the pipeline. Subsequently, the system detects the second pressure value P2 through the second pressure sensor (the pressure sensor near the cold source side) and determines whether it meets the second condition: P2 is less than the second predetermined pressure value P. m2 (P m1 >P m2 Furthermore, within time T2, the refrigerant remains within the second predetermined range [Pc, Pd], and the absolute difference ΔP between P2 and P1 > Pset (the predetermined difference). If the second condition is met, the control system closes the solenoid valve again and triggers the converter to rotate 180°, thus swapping the positions of the first and second adsorption-desorption beds. The converter operation requires the following conditions: the solenoid valve changes from open to closed and remains stably closed for a period T3; within the previous converter operation time T4, the control system records only one opening and closing of the solenoid valve. This control logic, through dual verification of pressure threshold and time window, avoids instantaneous fluctuation interference, ensuring the reliability of the adsorption-desorption cycle. Simultaneously, by judging the difference ΔP, it optimizes refrigerant flow efficiency and reduces ineffective cycle energy consumption.

[0074] This embodiment also includes a solenoid valve malfunction protection method. Specifically, the control system records the number and time of the solenoid valve's recent N opening and closing times. If the solenoid valve frequently opens within a certain time T3, a solenoid valve malfunction protection message is displayed to remind the user to perform maintenance.

[0075] This design combines historical data analysis with real-time monitoring to identify abnormal and frequent solenoid valve operation caused by refrigerant flow abnormalities, adsorbent performance degradation, or pressure sensor malfunctions. This provides early warning of potential faults and avoids system downtime risks caused by solenoid valve overheating, seal wear, or pipeline pressure surges.

[0076] This embodiment also includes: a control system that records the number of times the converter is turned on. This helps users calculate the cooling heat dissipation of the invention and reminds users to maintain the converter regularly.

[0077] Specifically, the control system incorporates a built-in counter module. Each time the converter completes a 180° rotation, the counter automatically increments the record. This recorded data can be viewed by the user via the device panel display or a remote communication interface (such as RS485 or Ethernet). Based on the number of times the converter has been turned on, the user can estimate the total heat dissipation of the equipment by combining the theoretical heat dissipation of a single adsorption-desorption cycle (calculated from parameters such as refrigerant flow rate and heat exchanger temperature difference), which can be used for energy efficiency assessment or thermal management optimization. Furthermore, the control system sets a maintenance threshold (e.g., the number of converter turns on reaches 1000 times). When the counter value approaches or reaches the threshold, a maintenance reminder is triggered: the user is prompted to lubricate the converter, check the seals, or replace components via flashing LED indicators, a buzzer alarm, or remote notification (such as SMS or email). This design extends the converter's lifespan by quantifying the equipment's operating status, while reducing problems such as rotational jamming and seal failure caused by untimely maintenance, thus improving system reliability.

[0078] In this embodiment, during one cycle of adsorption refrigeration, the pressure sensor on the desorption side detects a pressure value P1 that does not reach P for an extended period of time (e.g., Ta = 30 seconds). m1 Or, the pressure sensor on the adsorption side detects a pressure value P2 that Ta does not reach P for an extended period of time. m2 At this point, the control system triggers the adsorbent anomaly protection logic, sending a maintenance reminder to maintenance personnel via flashing LED indicators on the equipment panel, buzzer alarm, or remote communication interface (such as RS485 or Ethernet), prompting the user to check the adsorbent status or replenish the refrigerant. This design accurately identifies adsorbent failure or refrigerant circulation anomalies through dual verification of pressure anomalies and time windows, avoiding a sudden drop in cooling efficiency due to decreased adsorption capacity, while also reducing maintenance cost waste caused by false alarms.

[0079] It should be noted that the specific values ​​of the first predetermined pressure value, the first predetermined time, the first predetermined range, the second predetermined pressure value, the second predetermined time, the second predetermined range, the predetermined difference, and the long time Ta in this embodiment are not limited and can be set according to the actual product test data.

[0080] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

[0081] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusivity.

[0082] The term "comprises" implies that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. An adsorption cooler, characterized in that, include: The system comprises a first heat exchanger, a second heat exchanger, a first adsorption-desorption bed, a second adsorption-desorption bed, and a converter. The first heat exchanger is heat-transferringly connected to the first adsorption-desorption bed, and the second heat exchanger is heat-transferringly connected to the second adsorption-desorption bed. The first and second adsorption-desorption beds are connected in communication. The two ends of the converter are respectively connected to the first and second adsorption-desorption beds to achieve the interchange of the positions of the first and second adsorption-desorption beds, and to make the first heat exchanger heat-transferringly connected to the second adsorption-desorption bed after the interchange, and the second heat exchanger heat-transferringly connected to the first adsorption-desorption bed after the interchange.

2. The adsorption cooler according to claim 1, characterized in that, The heat transfer directions of the first heat exchanger and the second heat exchanger are opposite.

3. The adsorption cooler according to claim 1, characterized in that, Also includes: The pipeline has its two ends connected to the first adsorption-desorption bed and the second adsorption-desorption bed, respectively.

4. The adsorption cooler according to claim 3, characterized in that, Also includes: A first filter element and a second filter element are respectively installed at both ends of the pipeline.

5. The adsorption cooler according to claim 3, characterized in that, Also includes: A valve is installed in the pipeline to enable or disable the first adsorption-desorption bed and the second adsorption-desorption bed.

6. The adsorption cooler according to claim 5, characterized in that, Also includes: A first pressure sensor and a second pressure sensor are both installed on the pipeline, and the first pressure sensor and the second pressure sensor are respectively located on both sides of the valve.

7. The adsorption cooler according to claim 3, characterized in that, Also includes: A gas storage tank, which is connected to the pipeline to store the desorbed refrigerant.

8. The adsorption cooler according to claim 1, characterized in that, Also includes: A heat insulation plate is disposed between the first adsorption-desorption bed and the second adsorption-desorption bed.

9. A control method for an adsorption cooler as described in any one of claims 1-8, characterized in that, One of the first adsorption-desorption bed and the second adsorption-desorption bed is located near a heat source, and the other of the first adsorption-desorption bed and the second adsorption-desorption bed is located near a cold source; the control method includes: When the refrigerant desorbed from either the first adsorption bed or the second adsorption bed is adsorbed by the other, the positions of the first adsorption bed and the second adsorption bed are interchanged by the converter to achieve periodic circulation of the refrigerant.

10. The control method for the adsorption cooler according to claim 9, wherein the adsorption cooler is the adsorption cooler as described in claim 6, characterized in that, When the refrigerant desorbed from either the first adsorption bed or the second adsorption bed is adsorbed by the other, the converter swaps the positions of the first and second adsorption beds to achieve periodic refrigerant circulation, including: The valve is closed, and a first pressure value is detected by the pressure sensor near the heat source in the first pressure sensor and the second pressure sensor. When the first pressure value meets the first condition, the valve is opened, and at the same time, the second pressure value is detected by the pressure sensor near the cold source in the first pressure sensor and the second pressure sensor. If the second pressure value meets the second condition, the valve is closed, and the positions of the first adsorption desorption bed and the second adsorption desorption bed are interchanged through the converter. The first condition is: the first pressure value is greater than the first predetermined pressure value, and the first pressure value remains within the first predetermined range for a first predetermined time. The second condition is: the second pressure value is less than the second predetermined pressure value, the second pressure value remains within the second predetermined range for a second predetermined time, and the absolute value of the difference between the second pressure value and the first pressure value is greater than the predetermined difference.

Images