Multi-unit power recovery elastic card refrigerating device combined with evaporative cooling and application method of multi-unit power recovery elastic card refrigerating device

Abstract

The invention discloses a multi-unit power recovery elastic clamping refrigeration device combined with evaporative cooling and an application method thereof, the device comprises a transmission module and a heat exchange module, and the heat exchange module comprises a first rotating disc, a second rotating disc, a heat exchange chamber, an SMA spring unit and a cross flow fan. The first rotating disc and the second rotating disc are symmetrically arranged at intervals, the same sides of the first rotating disc and the second rotating disc incline towards the center direction, the SMA spring units are connected between the first rotating disc and the second rotating disc in parallel, and the transmission module can drive the rotating discs and the SMA spring units to rotate synchronously. The upper portion of the heat exchange chamber is provided with an air inlet and an air outlet, and the bottom of the heat exchange chamber is provided with a water tank. The device can synchronously drive the SMA spring unit to complete loading and unloading, and efficient refrigeration and complete work recovery are achieved. According to the device, evaporative cooling and elastic clamping refrigeration are combined, a continuous rotation working mode of'water-cooling heat dissipation in a loading area and air refrigeration in an unloading area 'is adopted, the system energy efficiency is remarkably improved, and the refrigeration temperature is reduced.

Description

Technical Field

[0001] This application belongs to the field of solid-state refrigeration technology, and in particular relates to a multi-unit power recovery cassette refrigeration device and its application method. Background Technology

[0002] Solid-state refrigeration technology, as a potential alternative to traditional vapor compression refrigeration, has attracted much attention due to its advantages such as zero greenhouse gas emissions and low operating noise. Among them, the spring-loaded refrigeration technology based on the elasto-thermal effect of shape memory alloys (SMA) shows promising application prospects due to its advantages such as large temperature range, high theoretical energy efficiency, flexible driving method, and relatively low material cost. However, this technology still faces a key bottleneck: the phase transformation of SMA materials usually requires large stress, which leads to the need for high-power driving mechanisms in refrigeration systems, resulting in large system size and certain safety risks. In addition, most existing SMA refrigeration systems lack effective power recovery mechanisms or have low recovery efficiency, which seriously restricts the overall energy efficiency.

[0003] To alleviate the system size and safety issues caused by high driving stress, existing technologies have proposed various SMA structure optimization schemes, such as coiled nickel-titanium strips, twisted nickel-titanium wires, and tension / compression nickel-titanium springs. Among them, "a spring-loaded refrigerator based on the tension / compression loading of a shape memory alloy helical spring" can be considered the closest prior art to this application. This scheme induces a phase change by reciprocatingly stretching and compressing the SMA spring within a straight tube using a piston, preliminarily verifying the potential of the SMA spring in reducing driving force and providing a possibility for device implementation.

[0004] Although this technology shows some promise for application, it still has the following obvious shortcomings: 1. There is a significant contradiction between system volume and driving displacement. While SMA springs reduce driving force, they require greater displacement space, leading to structural redundancy. If mechanisms such as Scottish yokes are used to achieve reciprocating motion, an additional space of at least twice the stroke is required, further exacerbating volume expansion.

[0005] 2. The cold zone and the hot zone are not effectively separated. The cooling and heat release processes occur alternately in the same location. The mixing of cold and hot causes serious heat loss and significantly reduces the cooling capacity.

[0006] 3. Challenges remain in ensuring smooth motion and maintaining overall structural reliability.

[0007] 4. Several challenges exist in engineering practice, including difficulties in system sealing, high frictional losses of moving parts, and limited heat exchange efficiency due to unreasonable flow channel design.

[0008] In summary, although SMA spring-based refrigeration structures are valuable in reducing driving stress, existing technologies (especially refrigeration devices using piston straight tubes to compress SMA springs) still have significant shortcomings in terms of system compactness, driving efficiency, reliability, and engineering details.

[0009] Therefore, there is an urgent need to develop a new solution for spring-loaded refrigeration with a more rational structure, higher integration, and more stable operation, in order to promote the practical application and commercialization of this technology. Summary of the Invention

[0010] The purpose of this application is to provide a multi-unit power recovery cassette refrigeration device, which utilizes a multi-unit collaborative power recovery mechanism to achieve efficient and compact refrigeration and complete power recovery; and through the superposition of evaporative cooling and cassette refrigeration working mode, it significantly improves system energy efficiency and reduces refrigeration temperature.

[0011] In a first aspect, this application provides a multi-unit power recovery spring-loaded refrigeration device, including a transmission module and a heat exchange module. The heat exchange module includes a first turntable, a second turntable, a heat exchange chamber, multiple SMA spring units, and a crossflow fan. The first and second turntables are symmetrically arranged at intervals, and the same side of each turntable is inclined towards the center of the turntables. The rotation drive mechanism is connected to the first and second turntables, and the transmission module can drive the first and second turntables to rotate simultaneously. Multiple SMA spring units are connected in parallel between the first turntable and the second turntable. The SMA spring units, the first turntable, and the second turntable are all located in the cavity inside the heat exchange chamber. The upper part of the cavity of the heat exchange chamber is provided with an air inlet and an air outlet. The bottom of the cavity is provided with a water tank. The crossflow fan is located on the outer side of the heat exchange chamber, and the air outlet of the crossflow fan is connected to the air inlet of the heat exchange chamber.

[0012] In one implementation, the heat exchange module further includes a universal joint, and the two ends of the SMA spring unit are respectively connected to the first turntable and the second turntable through the universal joint.

[0013] In one implementation, the SMA spring unit includes end caps located at both ends and multiple helical SMA springs fixed between the two end caps. The multiple SMA springs are distributed circumferentially at intervals along the end caps, and the end caps are fixedly connected to the universal joint.

[0014] In one implementation, the transmission module includes a rotary drive mechanism, a first seated bearing, a second seated bearing, a transmission shaft, a first bevel gear, a second bevel gear, a third bevel gear, and a fourth bevel gear. The transmission shaft is connected to the rotary drive mechanism, and its two ends are rotatably mounted in the first and second seated bearings, respectively. The first and second bevel gears are fixedly fitted onto the periphery of the transmission shaft at intervals. The first and third bevel gears mesh with each other, and the second and fourth bevel gears mesh with each other. The third bevel gear is coaxially connected to the first turntable, and the fourth bevel gear is coaxially connected to the second turntable.

[0015] In one implementation, the transmission module further includes a third bearing and a fourth bearing. A connecting shaft is fixed to the back of the first turntable and the second turntable. The connecting shaft of the first turntable passes through the third bearing and is coaxially connected to the third bevel gear. The connecting shaft of the second turntable passes through the fourth bearing and is coaxially connected to the fourth bevel gear.

[0016] In one implementation, the transmission module further includes a first spur gear and a second spur gear. The rotary drive mechanism includes a rotary motor, a coupling, a rotating shaft, a fifth bearing, and a sixth bearing. The output shaft of the rotary motor is connected to the coupling, and the coupling is coaxially connected to the rotating shaft. The rotating shaft is rotatably mounted in the fifth and sixth bearings. The first spur gear is fixedly sleeved on the periphery of the rotating shaft, and the second spur gear is fixedly sleeved on the periphery of the transmission shaft.

[0017] In one implementation, the spring-loaded cooling device further includes a fixing plate, and the rotary motor, heat exchange chamber, first seated bearing, second seated bearing, third seated bearing, fourth seated bearing, fifth seated bearing, and sixth seated bearing are all fixed on the fixing plate.

[0018] In one implementation, the heat exchange chamber includes an upper cover and a base. The upper cover covers the base to form a sealed cavity. The first turntable, the SMA spring unit, and the second turntable are all located inside the cavity. The air inlet and the air outlet are located on opposite sides of the upper cover, and the air outlet is connected to an air outlet pipe.

[0019] In one implementation, the heat exchange module further includes a guide column, which is installed between the first turntable and the second turntable. Multiple circumferentially spaced guide vanes extend from the outer periphery of the guide column along the tangential direction, and multiple SMA spring units are spaced apart around the guide column.

[0020] Secondly, this application also provides a method for applying the above-mentioned spring-loaded cooling device, the method comprising: Cooling temperature-power adjustment mode: Under a fixed fan speed, increasing the rotation speed of the first and second discs can reduce the air supply temperature and increase the cooling power, while the input power of the transmission module increases accordingly; Under a fixed fan speed, increasing the fan speed can increase the cooling power, but due to the shortened heat exchange time, the air supply temperature increases, and the power consumption of the crossflow fan increases. Intermittent lowest temperature air supply mode: By configuring a circulating air duct, the cooling air discharged by the crossflow fan is circulated and sent back into the heat exchange chamber. The air temperature gradually decreases during circulation until it stabilizes at the lowest temperature before being discharged from the heat exchange chamber. Then, it is re-inhaled from the outside air and circulated again, thereby achieving intermittent output of the lowest temperature cold air.

[0021] Compared with the prior art, the advantages of this application are as follows: 1. A symmetrical turntable synchronously drives multiple SMA spring units to complete loading and unloading, achieving a continuous heat release-endothermic cycle. This system features high transmission efficiency, a compact structure, and high volumetric cooling capacity density. Regarding power recovery, existing spring-loaded refrigeration devices often employ a dual-unit design, using unloading force to drive the loading of another unit. However, due to the half-cycle phase difference between the two units, the unloading and loading forces do not match, resulting in some power not being recovered. This application uses a multi-unit, equidistant phase difference arrangement, ensuring each unit is in different loading / unloading phases within the cycle. This achieves adaptive matching between unloading and loading forces, significantly improving power recovery efficiency. Theoretically, as the number of SMA spring units increases, the power recovery efficiency can reach 100%.

[0022] 2. This application combines evaporative cooling with spring-loaded refrigeration, employing a continuous rotating operating mode of "water cooling in the loading zone and air cooling in the unloading zone." Utilizing a compact arrangement of multiple SMA spring units, the SMA spring units have a high specific surface area water film and droplets adhering to their surfaces as they leave the loading zone. Upon entering the unloading zone, the heat absorption from the phase change of the SMA springs and the heat absorption from the evaporation of the water film work together with the flowing air, generating a synergistic cooling effect. This significantly enhances the overall cooling capacity and energy efficiency of the system, achieving temperatures lower than those achievable by a single refrigeration mechanism. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a multi-unit power recovery spring-loaded refrigeration device provided in an embodiment of this application; Figure 2 yes Figure 1 A three-dimensional structural diagram of the heat exchange module in the spring-loaded refrigeration device shown. Figure 3 yes Figure 1 An exploded view of the heat exchange module in the spring-loaded refrigeration device shown. Figure 4 yes Figure 1 A longitudinal sectional view of the heat exchange module in the spring-loaded refrigeration device shown. Figure 5 yes Figure 1 The diagram shows a three-dimensional structural schematic of the transmission module in the spring-loaded cooling device.

[0024] Illustration: 1. Transmission module; 111. Rotary motor; 112. Coupling; 113. Shaft; 114. Fifth mounted bearing; 115. Sixth mounted bearing; 12a. First mounted bearing; 12b. Second mounted bearing; 12c. Third mounted bearing; 12d. Fourth mounted bearing; 13. Drive shaft; 14a. First bevel gear; 14b. Second bevel gear; 14c. Third bevel gear; 14d. Fourth bevel gear; 15a. First spur gear; 15b. Second spur gear; 2. Heat exchange module; 21. First turntable; 22. Second turntable; 23. Heat exchange chamber; 23a. Top cover; 23b. Base; 23c. Air outlet duct; 231. Air inlet; 232. Air outlet; 24. SMA spring unit; 25. Crossflow fan; 26. Universal joint; 27. Guide column; Fixing plate 3. Detailed Implementation

[0025] To address the shortcomings of existing SMA spring-based refrigeration structures in terms of system compactness, drive efficiency, reliability, and engineering details, this application provides embodiments of multi-unit power recovery spring-loaded refrigeration devices. In these embodiments, the spring-loaded refrigeration device includes a transmission module and a heat exchange module. The heat exchange module includes a first turntable, a second turntable, a heat exchange chamber, multiple SMA spring units, and a crossflow fan. The first and second turntables are symmetrically spaced, with each on the same side inclined towards its center. The transmission module is drively connected to the first and second turntables, enabling them to rotate simultaneously. Multiple SMA spring units are connected in parallel between the first and second turntables. The SMA spring units, the first turntable, and the second turntable are all located within a cavity inside the heat exchange chamber. The upper part of the cavity has an air inlet and an air outlet, and the bottom of the cavity has a water tank for holding distilled water. The crossflow fan is located outside the heat exchange chamber, with its outlet connected to the air inlet of the heat exchange chamber.

[0026] The symmetrically arranged first and second turntables of this device can synchronously drive multiple SMA spring units to complete loading and unloading, realizing a continuous heat release-heat absorption cycle, achieving efficient and compact refrigeration and complete power recovery. This device combines evaporative cooling with spring-loaded refrigeration, adopting a continuous rotating working mode of "water cooling in the loading zone and air cooling in the unloading zone," which significantly improves system energy efficiency and reduces refrigeration temperature.

[0027] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments.

[0028] Please see Figure 1 This embodiment shows a multi-unit power recovery cassette refrigeration device, including a transmission module 1 and a heat exchange module 2. The heat exchange module 2 includes a first turntable 21, a second turntable 22, a heat exchange chamber 23, multiple SMA spring units 24, and a crossflow fan 25.

[0029] Please see Figure 2 and Figure 3 The first turntable 21 and the second turntable 22 are symmetrically arranged at intervals, and the same side of the two are inclined towards the center of the two. The rotation drive mechanism is connected to the first turntable 21 and the second turntable 22, and the rotation drive mechanism can drive the first turntable 21 and the second turntable 22 to rotate simultaneously.

[0030] Multiple SMA spring units 24 are connected in parallel between the first turntable 21 and the second turntable 22. The SMA spring units 24, the first turntable 21 and the second turntable 22 are all located in the cavity inside the heat exchange chamber 23. The upper part of the cavity of the heat exchange chamber 23 is provided with an air inlet 231 and an air outlet 232. The bottom of the cavity of the heat exchange chamber 23 has a water tank for holding distilled water. The crossflow fan 25 is located on the outer side of the heat exchange chamber 23, and the air outlet of the crossflow fan 25 is connected to the air inlet 231 of the heat exchange chamber 23.

[0031] Through the above design, the transmission module 1 can drive the first turntable 21 and the second turntable 22 to rotate simultaneously. During this process, the symmetrical first turntable 21 and the second turntable 22 can synchronously drive multiple SMA spring units 24 to complete loading and unloading, realizing a continuous heat release-heat absorption cycle. This results in efficient transmission, a compact structure, and high volumetric cooling capacity density. Regarding power recovery, existing spring-loaded refrigeration devices mostly adopt a dual-unit design, using unloading force to drive the loading of another unit. However, due to the half-cycle phase difference between the two units, the unloading force and loading force do not match, leading to some power not being recovered. This embodiment uses a multi-unit, equal-phase-difference arrangement, so that each unit is in a different loading / unloading stage within the cycle, achieving adaptive matching between unloading force and loading force, thereby significantly improving power recovery efficiency. Theoretically, as the number of SMA spring units 24 increases, the power recovery efficiency can reach 100%.

[0032] Meanwhile, this embodiment combines evaporative cooling with spring-loaded refrigeration, employing a continuous rotating operating mode of "water cooling in the loading zone and air cooling in the unloading zone." Utilizing a dense parallel design of multiple SMA spring units 24, the SMA spring units 24 have a high specific surface area water film and droplets adhering to their surfaces when leaving the loading zone. Upon entering the unloading zone, the heat absorption from the phase change of the SMA springs and the heat absorption from the evaporation of the water film work together with the flowing air, generating a synergistic cooling effect. This significantly enhances the overall cooling capacity and energy efficiency of the system, achieving temperatures lower than those achievable by a single cooling mechanism.

[0033] Furthermore, the heat exchange module 2 in this embodiment may also include a universal joint 26, and the SMA spring unit 24 includes end heads located at both ends and multiple helical SMA springs fixed between the two end heads. The end heads are connected to the first turntable 21 and the second turntable 22 through the universal joint 26. The connection design of the universal joint 26 can ensure that the multi-layer springs work synchronously, overcoming the single-layer arrangement limitation caused by the need to maintain the same tension ratio of each spring under the traditional direct connection method, thereby significantly improving space utilization and cooling density. Reasonable control of the tension ratio is crucial for performance: if it is too small, the phase change will be insufficient and the cooling capacity will decrease; if it is too large, it will easily cause material fatigue and affect the service life.

[0034] For further details, please refer to Figure 5 The transmission module 1 may include a rotary drive mechanism, a first bearing 12a, a second bearing 12b, a drive shaft 13, a first bevel gear 14a, a second bevel gear 14b, a third bevel gear 14c, a fourth bevel gear 14d, a third bearing 12c, a fourth bearing 12d, a first spur gear 15a, and a second spur gear 15b; wherein, the rotary drive mechanism includes a rotary motor 111, a coupling 112, a rotating shaft 113, a fifth bearing 114, and a sixth bearing 115.

[0035] The output shaft of the rotary motor 111 is connected to the coupling 112, which is coaxially connected to the rotating shaft 113. The rotating shaft 113 is rotatably mounted in the fifth bearing 114 and the sixth bearing 115. The first spur gear 15a is fixedly sleeved on the periphery of the rotating shaft 113, and the second spur gear 15b is fixedly sleeved on the periphery of the transmission shaft 13. The first spur gear 15a and the second spur gear 15b mesh with each other. The two ends of the transmission shaft 13 are rotatably mounted in the first bearing 12a and the second bearing 12b, respectively. The first bevel gear 14a and the second bevel gear 14b are fixedly sleeved at intervals on the periphery of the transmission shaft 13. The first bevel gear 14a meshes with the third bevel gear 14c, and the second bevel gear 14b meshes with the fourth bevel gear 14d. The third bevel gear 14c is coaxially connected to the first turntable 21, and the fourth bevel gear 14d is coaxially connected to the second turntable 22. The back of the first turntable 21 and the second turntable 22 are fixed with connecting shafts. The connecting shaft of the first turntable 21 passes through the third bearing 12c and is coaxially connected to the third bevel gear 14c. The connecting shaft of the second turntable 22 passes through the fourth bearing 12d and is coaxially connected to the fourth bevel gear 14d.

[0036] Through the above transmission structure design, when the rotary motor 111 is working, it drives the rotating shaft 113 to rotate the first spur gear 15a. The first spur gear 15a drives the second spur gear 15b, which meshes with it, to rotate. The second spur gear 15b is coaxially connected to the transmission shaft 13. Thus, the transmission shaft 13 and its first bevel gear 14a and second bevel gear 14b rotate. The first bevel gear 14a drives the third bevel gear 14c to rotate, the third bevel gear 14c drives the first turntable 21 to rotate, the second bevel gear 14b drives the fourth bevel gear 14d to rotate, and the fourth bevel gear 14d drives the second turntable 22 to rotate. It can be seen that the transmission module 1 can simultaneously drive the first turntable 21, the second turntable 22, and the SMA spring unit 24 to rotate synchronously in the same direction. This transmission module 1 has a simple structure, a small number of gears, and advantages such as low mechanical loss, high transmission efficiency, and compact structure. In practical applications, a reducer can be selected according to the working frequency and torque requirements to further optimize the overall size and performance matching. It should be noted that the structural scheme of the transmission module 1 described in this embodiment is only for illustrative purposes. In other embodiments, other structural forms of the transmission module 1 can also be used, as long as the structural scheme can drive the first turntable 21 and the second turntable 22 to rotate synchronously.

[0037] Furthermore, the heat exchange chamber 23 may include an upper cover 23a and a base 23b. The upper cover 23a covers the base 23b to form a sealed cavity. The first turntable 21, the SMA spring unit 24, and the second turntable 22 are all located inside the cavity. The air inlet 231 and the air outlet 232 are located on opposite sides of the upper cover 23a, and the air outlet 232 is connected to an upward-curving air outlet pipe 23c.

[0038] The transmission module 1 transmits power to two symmetrical first turntables 21 and second turntables 22. The first turntables 21 and second turntables 22 drive multiple sets of SMA spring units 24 to rotate continuously via universal joints 26. When the device is running, the base 23b of the heat exchange chamber 23 is filled with distilled water to dissipate heat from the SMA spring units 24 in the loaded state; the upper cover 23a of the heat exchange chamber 23 is filled with air driven by a crossflow fan 25 to perform convective heat exchange on the SMA spring units 24 in the unloaded state, and the cooled air is output from the air outlet duct 23c.

[0039] Please see Figure 4 The heat exchange module 2 may further include a guide column 27, which is installed between the first turntable 21 and the second turntable 22. Multiple circumferentially spaced guide vanes extend tangentially from the outer periphery of the guide column 27, and multiple SMA spring units 24 are spaced apart around the guide column 27. The guide column 27 is used to guide and optimize airflow organization, improving the heat exchange efficiency between air and the SMA springs.

[0040] Furthermore, the spring-loaded refrigeration device may also include a fixed plate 3, and a rotary motor 111, a heat exchange chamber 23, a first seated bearing 12a, a second seated bearing 12b, a third seated bearing 12c, a fourth seated bearing 12d, a fifth seated bearing 114, and a sixth seated bearing 115 are all fixed on the fixed plate 3.

[0041] The working principle of the spring-loaded cooling device in this embodiment is as follows: When the SMA spring unit 24 rotates to the leftmost side of the device (i.e., the side furthest from the drive shaft), it is in its original length state. As rotation continues, under the action of the symmetrically tilted turntable, the length of the SMA spring unit 24 gradually increases, and the SMA spring unit 24 is gradually stretched. Due to the elastothermal effect, the SMA spring releases latent heat of phase change during adiabatic stretching, causing its temperature to rise. In this embodiment, the entire loading process takes place in the water-cooled environment of the base. The distilled water inside the base 23b continuously dissipates heat through the external heat exchange chamber 23, maintaining room temperature. Therefore, the heat released by the SMA spring during loading is promptly carried away by the water, ensuring that its temperature remains essentially at room temperature even when it reaches the maximum stretching state on the rightmost side.

[0042] Subsequently, the SMA spring unit 24 enters the unloading phase, gradually decreasing in length. The SMA spring absorbs latent heat, causing its temperature to drop. It absorbs the heat flowing through the air within the upper cover 23a, thus cooling the air. Overall, the device forms a heat dissipation zone close to room temperature in the base 23b of the heat exchange chamber 23, and a cooling zone below room temperature in the upper cover 23a. The crossflow fan 25 delivers air to the cooling zone for cooling before outputting it, creating a continuous cooling effect.

[0043] In summary, this embodiment utilizes densely arranged SMA spring units 24 to create a large heat exchange area within the cooling zone. This design enhances the heat exchange efficiency between the SMA springs and the air. Furthermore, because the SMA springs are wetted in water in the base 23b, a large water film adheres to their surface when they enter the cooling zone. Under forced convection conditions, the water film evaporation effect is significantly enhanced, resulting in a substantial temperature drop from evaporative cooling. Thus, this device achieves synergistic efficiency between evaporative cooling and spring-loaded refrigeration modes, breaking through the limitations of a single mode in terms of cooling performance. Combined with a multi-unit collaborative power recovery mechanism, the system input power is significantly reduced, the output cooling capacity is significantly increased, and the overall energy efficiency ratio is far higher than that of traditional spring-loaded refrigeration devices.

[0044] This embodiment also provides an application method for the device, which includes multiple operating modes to adapt to different application requirements: Cooling temperature-power adjustment mode: Under a fixed fan speed, increasing the rotary speed can reduce the supply air temperature and increase the cooling power, while the input power of the rotary motor 111 increases accordingly; under a fixed speed, increasing the fan speed can increase the cooling power, but due to the shortened heat exchange time, the supply air temperature increases, and the power consumption of the crossflow fan 25 increases.

[0045] Intermittent Lowest Temperature Air Supply Mode: By configuring a circulating air duct, the cooling air discharged by the crossflow fan 25 is circulated and sent back into the heat exchange chamber. The air temperature gradually decreases during circulation until it stabilizes at the lowest temperature before being discharged from the heat exchange chamber. Then, it draws in outside air again for repeated circulation, thereby achieving intermittent output of the lowest temperature cold air.

[0046] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be direct connections or indirect connections through an intermediate medium, and they can be internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A multi-unit power recovery cartridge refrigeration device, characterized in that, It includes a transmission module and a heat exchange module. The heat exchange module includes a first turntable, a second turntable, a heat exchange chamber, multiple SMA spring units, and a crossflow fan. The first and second turntables are symmetrically arranged at intervals, and the same side of each turntable is inclined towards the center of the turntable. The transmission module is connected to the first and second turntables and can drive the first and second turntables to rotate simultaneously. Multiple SMA spring units are connected in parallel between the first turntable and the second turntable. The SMA spring units, the first turntable, and the second turntable are all located in the cavity inside the heat exchange chamber. The upper part of the cavity of the heat exchange chamber is provided with an air inlet and an air outlet, and the bottom of the cavity is provided with a water tank. The crossflow fan is located on the outer side of the heat exchange chamber, and the air outlet of the crossflow fan is connected to the air inlet of the heat exchange chamber.

2. The spring-loaded cooling device according to claim 1, characterized in that, The heat exchange module also includes a universal joint, and the two ends of the SMA spring unit are respectively connected to the first turntable and the second turntable through the universal joint.

3. The spring-loaded cooling device according to claim 2, characterized in that, The SMA spring unit includes end caps located at both ends and multiple helical SMA springs fixed between the two end caps. The multiple SMA springs are distributed circumferentially at intervals along the end caps, and the end caps are fixedly connected to the universal joint.

4. The spring-loaded cooling device according to claim 1, characterized in that, The transmission module includes a rotary drive mechanism, a first seated bearing, a second seated bearing, a transmission shaft, a first bevel gear, a second bevel gear, a third bevel gear, and a fourth bevel gear. The transmission shaft is connected to the rotary drive mechanism and is rotatably mounted within the first and second seated bearings. The first and second bevel gears are fixedly fitted onto the periphery of the transmission shaft at intervals. The first and third bevel gears mesh with each other, and the second and fourth bevel gears mesh with each other. The third bevel gear is coaxially connected to the first turntable, and the fourth bevel gear is coaxially connected to the second turntable.

5. The spring-loaded cooling device according to claim 4, characterized in that, The transmission module also includes a third bearing and a fourth bearing. The back of the first turntable and the second turntable are fixed with connecting shafts. The connecting shaft of the first turntable passes through the third bearing and is coaxially connected to the third bevel gear. The connecting shaft of the second turntable passes through the fourth bearing and is coaxially connected to the fourth bevel gear.

6. The spring-loaded cooling device according to claim 5, characterized in that, The transmission module further includes a first spur gear and a second spur gear. The rotary drive mechanism includes a rotary motor, a coupling, a rotating shaft, a fifth bearing, and a sixth bearing. The output shaft of the rotary motor is connected to the coupling, and the coupling is coaxially connected to the rotating shaft. The two ends of the rotating shaft are rotatably mounted in the fifth and sixth bearings. The first spur gear is fixedly sleeved on the periphery of the rotating shaft, and the second spur gear is fixedly sleeved on the periphery of the transmission shaft.

7. The spring-loaded cooling device according to claim 6, characterized in that, The spring-loaded refrigeration device also includes a fixing plate, on which the rotary motor, heat exchange chamber, first seated bearing, second seated bearing, third seated bearing, fourth seated bearing, fifth seated bearing and sixth seated bearing are all fixed.

8. The spring-loaded cooling device according to any one of claims 1 to 7, characterized in that, The heat exchange chamber includes an upper cover and a base. The upper cover covers the base to form a sealed cavity. The first turntable, the SMA spring unit, and the second turntable are all located inside the cavity. The air inlet and the air outlet are located on opposite sides of the upper cover, and the air outlet is connected to the air outlet pipe.

9. The spring-loaded cooling device according to any one of claims 1 to 7, characterized in that, The heat exchange module also includes a flow guide column, which is installed between the first turntable and the second turntable. Multiple circumferentially spaced flow guide blades extend from the outer periphery of the flow guide column along the tangential direction, and multiple SMA spring units are spaced around the flow guide column.

10. A method of applying the spring-loaded cooling device as described in any one of claims 1 to 9, characterized in that, The application method includes: Cooling temperature-power adjustment mode: Under a fixed fan speed, increasing the rotation speed of the first and second discs can reduce the air supply temperature and increase the cooling power, while the input power of the transmission module increases accordingly; Under a fixed fan speed, increasing the fan speed can increase the cooling power, but due to the shortened heat exchange time, the air supply temperature increases, and the power consumption of the crossflow fan increases. Intermittent lowest temperature air supply mode: By configuring a circulating air duct, the cooling air discharged by the crossflow fan is circulated and sent back into the heat exchange chamber. The air temperature gradually decreases during circulation until it stabilizes at the lowest temperature before being discharged from the heat exchange chamber. Then, it is re-inhaled from the outside air and circulated again, thereby achieving intermittent output of the lowest temperature cold air.

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