Multi-unit power recovery pop can refrigeration device combined with evaporative cooling and application method thereof

Abstract

The application discloses a multi-unit work recovery spring-loaded refrigeration device combined with evaporative cooling and an application method thereof. The device comprises a transmission module and a heat exchange module. The heat exchange module comprises a first rotating disc, a second rotating disc, a heat exchange chamber, SMA spring units and a cross-flow fan. The first rotating disc and the second rotating disc are symmetrically arranged at intervals, and are inclined to the center direction on the same side. A plurality of SMA spring units are connected in parallel between the first rotating disc and the second rotating disc. The transmission module can drive the rotating disc and the SMA spring units to rotate synchronously. The upper part of the heat exchange chamber is provided with an air inlet and an air outlet, and the bottom part is provided with a water tank. The air outlet of the cross-flow fan is connected to the air inlet of the heat exchange chamber. The device can synchronously drive the SMA spring units to complete loading and unloading, realize efficient refrigeration and complete work recovery. The device combines evaporative cooling and spring-loaded refrigeration, adopts a continuous rotary working mode of 'water cooling heat dissipation in the loading area-air refrigeration in the unloading area', and significantly improves the system energy efficiency and reduces the refrigeration temperature.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of solid-state refrigeration, and particularly relates to a multi-unit power recovery elastic clamping refrigeration device and an application method thereof. BACKGROUND

[0002] As a potential alternative to traditional vapor compression refrigeration, solid-state refrigeration technology has attracted much attention due to its advantages such as no greenhouse gas emission and low operating noise. Among them, the elastic clamping refrigeration technology based on the elastic heating effect of shape memory alloy (SMA) has the advantages of large temperature change amplitude, high theoretical energy efficiency, flexible driving mode, and relatively low material cost, showing good application prospects. However, this technology still faces a key bottleneck: the phase transition of SMA material usually requires a large stress, which results in the need for a large-power driving mechanism for the refrigeration system, causing the system to be bulky and posing 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 problems of system size and safety 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, "an elastic clamping refrigerator based on shape memory alloy spiral spring tension-compression loading" can be considered as the closest prior art to the present application. This scheme induces phase transition by reciprocating stretching and compressing SMA springs in a straight pipe with a piston, which preliminarily verifies the potential of SMA springs in reducing driving force and provides the possibility for device implementation.

[0004] Despite the certain application prospects of this technology, it still has the following obvious deficiencies:

[0005] 1. There is a prominent contradiction between system size and driving displacement. Although SMA springs reduce the driving force, they require more displacement space, resulting in redundant device structure. If a Scotch yoke mechanism is used to achieve reciprocating motion, at least one times the stroke of the active space needs to be reserved, further exacerbating the volume expansion.

[0006] 2. The cold and hot zones are not effectively separated, and the refrigeration and heat release processes occur alternately at the same location, resulting in serious heat loss due to cold and hot mixing, and significantly reduced refrigeration capacity.

[0007] 3. The motion stability and overall structural reliability still face challenges.

[0008] 4. There are many difficulties in engineering practice, including system sealing difficulties, large friction loss of moving parts, and limited heat exchange efficiency due to unreasonable flow channel design.

[0009] In summary, although the refrigeration structure based on SMA spring has value in reducing driving stress, the prior art (especially the refrigeration device with piston straight pipe tension and compression SMA spring) still has obvious defects in system compactness, driving efficiency, reliability and engineering detail processing, etc.

[0010] Therefore, it is urgent to develop a new scheme of pop-cake refrigeration with more reasonable structure, higher integration and more stable operation to promote the practicalization and commercialization of the technology. SUMMARY

[0011] The purpose of the present application is to provide a multi-unit work recovery pop-cake refrigeration device which utilizes the work recovery mechanism of multi-unit cooperation to realize efficient and compact refrigeration and complete work recovery, and through the working mode of evaporation cooling and pop-cake refrigeration superposition, significantly improves the system energy efficiency and reduces the refrigeration temperature.

[0012] In a first aspect, the present application provides a multi-unit work recovery pop-cake refrigeration device, comprising a transmission module and a heat exchange module, the heat exchange module comprising a first rotating disc, a second rotating disc, a heat exchange chamber, a plurality of SMA spring units and a cross-flow fan;

[0013] The first rotating disc and the second rotating disc are symmetrically arranged at intervals, and the same side of both is inclined to the center direction of both, the rotating drive mechanism is in transmission connection with the first rotating disc and the second rotating disc, and the transmission module can drive the first rotating disc and the second rotating disc to rotate simultaneously.

[0014] A plurality of SMA spring units are connected in parallel between the first rotating disc and the second rotating disc, the SMA spring units, the first rotating disc and the second rotating disc 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 has a water tank, the cross-flow fan is located at the outer side of the heat exchange chamber, and the air outlet of the cross-flow fan is in butt joint with the air inlet of the heat exchange chamber.

[0015] In an implementation mode, the heat exchange module further comprises a universal joint, and the two ends of the SMA spring unit are connected with the first rotating disc and the second rotating disc through the universal joint respectively.

[0016] In an implementation mode, the SMA spring unit comprises end heads at both ends and a plurality of helical SMA springs fixed between the two end heads, the plurality of SMA springs are distributed at intervals along the circumference of the end heads, and the end heads are fixedly connected with the universal joint.

[0017] In an implementation, the transmission module comprises a rotary drive mechanism, a first band seat bearing, a second band seat 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 in transmission connection with the rotary drive mechanism, both ends of the transmission shaft are rotatably arranged in the first band seat bearing and the second band seat bearing respectively, the first bevel gear and the second bevel gear are fixedly sleeved on the periphery of the transmission shaft at intervals, the first bevel gear is in meshing connection with the third bevel gear, the second bevel gear is in meshing connection with the fourth bevel gear, the third bevel gear is coaxially connected with the first rotating disc, and the fourth bevel gear is coaxially connected with the second rotating disc.

[0018] In an implementation, the transmission module further comprises a third band seat bearing and a fourth band seat bearing, the back of the first rotating disc and the second rotating disc is fixed with a connecting shaft, the connecting shaft of the first rotating disc is coaxially connected with the third bevel gear through the third band seat bearing, and the connecting shaft of the second rotating disc is coaxially connected with the fourth bevel gear through the fourth band seat bearing.

[0019] In an implementation, the transmission module further comprises a first spur gear and a second spur gear, the rotary drive mechanism comprises a rotary motor, a shaft coupling, a rotating shaft, a fifth band seat bearing and a sixth band seat bearing, the output shaft of the rotary motor is connected with the shaft coupling, the shaft coupling is coaxially connected with the rotating shaft, the rotating shaft is rotatably arranged in the fifth band seat bearing and the sixth band seat bearing, 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.

[0020] In an implementation, the pop-up refrigeration device further comprises a fixed plate, the rotary motor, the heat exchange chamber, the first band seat bearing, the second band seat bearing, the third band seat bearing, the fourth band seat bearing, the fifth band seat bearing and the sixth band seat bearing are all fixed on the fixed plate.

[0021] In an implementation, the heat exchange chamber comprises an upper cover and a base, the upper cover covers the base to form a sealed cavity, the first rotating disc, the SMA spring unit and the second rotating disc are all located in the cavity, the air inlet and the air outlet are respectively located on the opposite sides of the upper cover, and the air outlet is connected with an air outlet pipe.

[0022] In an implementation, the heat exchange module further comprises a flow guide column, the flow guide column is installed between the first rotating disc and the second rotating disc, the outer periphery of the flow guide column extends a plurality of circumferentially spaced flow guide vanes in a tangent direction, and a plurality of the SMA spring units are spaced and distributed on the periphery of the flow guide column.

[0023] In a second aspect, the application further provides a method for using the above-mentioned elastic card refrigeration device, and the method comprises the following steps:

[0024] Refrigeration temperature-power regulation mode: under a fixed wind speed, increasing the rotating speed of the first rotating disc and the second rotating disc can reduce the supply air temperature and increase the refrigeration power, and the input power of the transmission module is correspondingly increased; under a fixed rotating speed, increasing the wind speed can increase the refrigeration power, but the supply air temperature is increased due to the shortened heat exchange time, and the power consumption of the cross-flow fan is increased;

[0025] Intermittent minimum temperature supply air mode: through the configuration of a circulating air duct, the cooling air discharged by the cross-flow fan is sent into the heat exchange chamber again through circulation, the temperature of the air is gradually reduced in the circulation, and the air is discharged from the heat exchange chamber after being stabilized at the minimum temperature, and then the air is inhaled from the outside air again to repeat the circulation, so that the intermittent output of the minimum temperature cooling air is realized.

[0026] Compared with the prior art, the application has the beneficial effects that:

[0027] 1. The symmetrical rotating discs synchronously drive multiple SMA spring units to complete loading and unloading, realize continuous heat release-heat absorption circulation, and have high transmission efficiency, compact structure, and high volume refrigeration capacity density. In terms of power recovery, the existing elastic card refrigeration device is mostly designed with two units, and the unloading force is used to drive the loading of another unit, but due to the half-period phase difference between the two units, the unloading force and the loading force do not match in the change trend, resulting in that part of the power cannot be recovered. The present application adopts the arrangement of multiple units with equal phase difference, so that each unit is in different loading / unloading stages in a period, the unloading force and the loading force are adaptively matched, and the power recovery efficiency is greatly improved. In theory, with the increase of the number of SMA spring units, the power recovery efficiency can reach 100%.

[0028] 2. The present application combines evaporative cooling and elastic card refrigeration, and adopts a continuous rotating working mode of “water cooling heat dissipation in the loading area-air refrigeration in the unloading area”. With the compact arrangement of multiple SMA spring units, the SMA spring units are attached with water film and water droplets on the surface when leaving the loading area, and after entering the unloading area, the SMA spring phase change heat absorption and water film evaporation heat absorption jointly act on the flowing air, so as to produce a synergistic refrigeration effect, thereby greatly enhancing the overall refrigeration capacity and energy efficiency of the system, and realizing a temperature lower than that achieved by a single refrigeration mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 FIG. 1 is a perspective structural schematic view of a multi-unit power recovery elastic card refrigeration device provided by an embodiment of the present application;

[0030] Figure 2 FIG. 2 is a perspective structural schematic view of a heat exchange module in the elastic card refrigeration device shown in FIG. 1; Figure 1

[0031] ​Figure 3 is Figure 1 is the exploded structural schematic diagram of the heat exchange module in the elastic card refrigeration device shown in the figure.

[0032] Figure 4 is Figure 1 is the longitudinal sectional schematic diagram of the heat exchange module in the elastic card refrigeration device shown in the figure.

[0033] Figure 5 is Figure 1 is the three-dimensional structural schematic diagram of the transmission module in the elastic card refrigeration device shown in the figure.

[0034] Illustration:

[0035] 1, transmission module; 111, rotary motor; 112, shaft coupling; 113, rotating shaft; 114, fifth bearing with seat; 115, sixth bearing with seat; 12a, first bearing with seat; 12b, second bearing with seat; 12c, third bearing with seat; 12d, fourth bearing with seat; 13, transmission 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;

[0036] 2, heat exchange module; 21, first rotating disc; 22, second rotating disc; 23, heat exchange chamber; 23a, upper cover; 23b, base; 23c, air outlet pipe; 231, air inlet; 232, air outlet; 24, SMA spring unit; 25, cross-flow fan; 26, universal joint; 27, flow guide column;

[0037] Fixed plate 3. DETAILED DESCRIPTION

[0038] In order to solve the defects of the existing technology, such as the compactness of the system, the driving efficiency, the reliability and the engineering details processing of the refrigeration structure based on the SMA spring. The present application provides some embodiments of the elastic card refrigeration device with multiple unit power recovery. In the embodiments, the elastic card refrigeration device includes a transmission module and a heat exchange module. The heat exchange module includes a first rotating disc, a second rotating disc, a heat exchange chamber, a plurality of SMA spring units and a cross-flow fan. The first rotating disc and the second rotating disc are symmetrically arranged at intervals, and the same side of the two is inclined to the center direction of the two. The transmission module is in transmission connection with the first rotating disc and the second rotating disc, and the transmission module can drive the first rotating disc and the second rotating disc to rotate simultaneously. The plurality of SMA spring units are connected in parallel between the first rotating disc and the second rotating disc. The SMA spring unit, the first rotating disc and the second rotating disc 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 has a water tank for containing distilled water. The cross-flow fan is located at the outside edge of the heat exchange chamber, and the air outlet of the cross-flow fan is connected to the air inlet of the heat exchange chamber.

[0039] The first rotating disc and the second rotating disc of the device are symmetrically arranged and can synchronously drive a plurality of SMA spring units to complete loading and unloading, realize continuous heat release-heat absorption cycle, realize efficient and compact refrigeration and complete work recovery.

[0040] In order to make the purposes, features and advantages of the present application more obvious and easy to understand, the technical solutions of the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the following described embodiments are only a part of the embodiments of the present application, not all the embodiments.

[0041] Please refer to Figure 1 , which shows a multi-unit work recovery spring card refrigeration device provided by the embodiment, which comprises a transmission module 1 and a heat exchange module 2, wherein the heat exchange module 2 comprises a first rotating disc 21, a second rotating disc 22, a heat exchange chamber 23, a plurality of SMA spring units 24 and a cross-flow fan 25.

[0042] Please refer to Figure 2 and Figure 3 , the first rotating disc 21 and the second rotating disc 22 are symmetrically arranged and are inclined to the center direction of both at the same side, the rotating drive mechanism is in transmission connection with the first rotating disc 21 and the second rotating disc 22, and the rotating drive mechanism can drive the first rotating disc 21 and the second rotating disc 22 to rotate simultaneously.

[0043] The plurality of SMA spring units 24 are connected in parallel between the first rotating disc 21 and the second rotating disc 22, the SMA spring units 24, the first rotating disc 21 and the second rotating disc 22 are all located in the cavity inside the heat exchange chamber 23, the cavity of the heat exchange chamber 23 is provided with an air inlet 231 and an air outlet 232 at the upper part, the cavity of the heat exchange chamber 23 has a water tank for containing distilled water at the bottom, the cross-flow fan 25 is located at the outside edge of the heat exchange chamber 23, and the air outlet of the cross-flow fan 25 is in butt joint with the air inlet 231 of the heat exchange chamber 23.

[0044] Through the above scheme design, the transmission module 1 can drive the first rotating disc 21 and the second rotating disc 22 to rotate at the same time, and in the process, the symmetrical first rotating disc 21 and the second rotating disc 22 can synchronously drive a plurality of SMA spring units 24 to complete loading and unloading, realize continuous heat release-heat absorption cycle, transmission is efficient, the structure is compact, has high volume refrigerating capacity density. In the aspect of power recovery, the existing elastic card refrigeration device is mostly designed with double units, and the unloading force is used to drive another unit to load, but because there is a half-cycle phase difference between the two units, the unloading force and the loading force change trend do not match, resulting in that part of the power cannot be recovered. The embodiment adopts a multi-unit equal phase difference arrangement, so that each unit is in a different loading / unloading stage in a cycle, realizes adaptive matching of the unloading force and the loading force, and thus greatly improves the power recovery efficiency. In theory, with the increase of the number of SMA spring units 24, the power recovery efficiency can reach 100%.

[0045] Meanwhile, the embodiment combines evaporative cooling and elastic card refrigeration, and adopts a continuous rotating working mode of “water cooling heat dissipation in the loading area-air refrigeration in the unloading area”. With the dense parallel design of a plurality of SMA spring units 24, the SMA spring units 24 are attached with water film and water droplets with high specific surface area when leaving the loading area, and after entering the unloading area, the SMA spring phase change heat absorption and the water film evaporation heat absorption jointly act on the air flowing through, to produce a synergistic refrigeration effect, thereby greatly enhancing the overall refrigeration capacity and energy efficiency of the system, and realizing a temperature lower than that reached by a single refrigeration mechanism.

[0046] Further, the heat exchange module 2 of the embodiment can further include a universal joint 26, the SMA spring unit 24 includes end heads located at two ends and a plurality of spiral SMA springs fixed between the two end heads, and the end heads are connected with the first rotating disc 21 and the second rotating disc 22 through the universal joint 26. The connection design of the universal joint 26 can ensure that the multiple layers of springs work synchronously, and overcome the single-layer arrangement limitation caused by the need to keep the stretch ratio of each spring consistent in the traditional direct connection mode, thereby significantly improving the space utilization and refrigeration density. Reasonable control of the stretch ratio is crucial to performance: too small and the phase change is insufficient, the refrigeration capacity decreases; too large and it is easy to cause material fatigue, affecting the service life.

[0047] Further, please refer to Figure 5 , the transmission module 1 can include a rotary drive mechanism, a first bearing with seat 12a, a second bearing with seat 12b, a transmission 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 with seat 12c, a fourth bearing with seat 12d, a first straight gear 15a and a second straight gear 15b; wherein the rotary drive mechanism includes a rotary motor 111, a shaft coupling 112, a rotating shaft 113, a fifth bearing with seat 114 and a sixth bearing with seat 115.

[0048] The output shaft of the rotary motor 111 is connected with the shaft coupling 112, the shaft coupling 112 is coaxially connected with the rotating shaft 113, the rotating shaft 113 is rotatably arranged in the fifth belt seat bearing 114 and the sixth belt seat bearing 115, the first spur gear 15a is fixedly sleeved on the circumference of the rotating shaft 113, the second spur gear 15b is fixedly sleeved on the circumference of the transmission shaft 13, and the first spur gear 15a and the second spur gear 15b are in meshing connection. The transmission shaft 13 is rotatably arranged in the first belt seat bearing 12a and the second belt seat bearing 12b at two ends, the first bevel gear 14a and the second bevel gear 14b are fixedly sleeved on the circumference of the transmission shaft 13 at intervals, the first bevel gear 14a is in meshing connection with the third bevel gear 14c, the second bevel gear 14b is in meshing connection with the fourth bevel gear 14d, the third bevel gear 14c is coaxially connected with the first rotating disc 21, and the fourth bevel gear 14d is coaxially connected with the second rotating disc 22. The back of the first rotating disc 21 and the back of the second rotating disc 22 are fixedly connected with connecting shafts, the connecting shaft of the first rotating disc 21 is coaxially connected with the third bevel gear 14c through the third belt seat bearing 12c, and the connecting shaft of the second rotating disc 22 is coaxially connected with the fourth bevel gear 14d through the fourth belt seat bearing 12d.

[0049] Through the above transmission structure design, when the rotary motor 111 works, the rotating shaft 113 is driven to rotate by the rotary motor 111, the first spur gear 15a is driven to rotate by the rotating shaft 113, the second spur gear 15b is driven to rotate by the first spur gear 15a, the transmission shaft 13 and the first bevel gear 14a and the second bevel gear 14b on the transmission shaft 13 are coaxially connected with the second spur gear 15b, the first bevel gear 14a is driven to rotate by the transmission shaft 13, the third bevel gear 14c is driven to rotate by the first bevel gear 14a, the first rotating disc 21 is driven to rotate by the third bevel gear 14c, the fourth bevel gear 14d is driven to rotate by the second bevel gear 14b, and the second rotating disc 22 is driven to rotate by the fourth bevel gear 14d. It can be seen that the transmission module 1 can drive the first rotating disc 21, the second rotating disc 22 and the SMA spring unit 24 to rotate in the same direction at the same time. The transmission module 1 has the advantages of simple structure, few gears, low mechanical loss, high transmission efficiency and compact structure. In practical application, a speed reducer can be selected according to the working frequency and torque requirement to further optimize the volume and performance matching of the whole machine. It should be noted that the structure scheme of the transmission module 1 described in the embodiment is only used for illustrative description, and other structure forms of the transmission module 1 can also be used in other embodiments, as long as the structure scheme can drive the first rotating disc 21 and the second rotating disc 22 to rotate synchronously.

[0050] Further, the heat exchange chamber 23 can include an upper cover 23a and a base 23b, the upper cover 23a covers the base 23b to form a sealed cavity, the first rotating disc 21, the SMA spring unit 24 and the second rotating disc 22 are located in the cavity; the air inlet 231 and the air outlet 232 are located on the opposite sides of the upper cover 23a respectively, and the air outlet 232 is connected with an air outlet pipe 23c which is curved upward.

[0051] The transmission module 1 transmits power to the two symmetrical first rotating disc 21 and second rotating disc 22, and the first rotating disc 21 and the second rotating disc 22 drive the plurality of SMA spring units 24 to rotate continuously through the universal joint 26. When the device is running, the base 23b of the heat exchange chamber 23 is filled with distilled water, which is used to dissipate heat for the SMA spring unit 24 in the loading state; the upper cover 23a of the heat exchange chamber 23 is driven by the cross-flow fan 25 to flow air, which is used to conduct convective heat exchange for the SMA spring unit 24 in the unloading state, and the cooled air is output from the air outlet pipe 23c.

[0052] Please refer to Figure 4 , the heat exchange module 2 can also include a flow guide column 27, the flow guide column 27 is installed between the first rotating disc 21 and the second rotating disc 22, the outer periphery of the flow guide column 27 extends a plurality of circumferentially spaced flow guide vanes in the tangential direction, and the plurality of SMA spring units 24 are spaced apart on the periphery of the flow guide column 27. The flow guide column 27 is used to guide and optimize the air flow organization, and improve the heat exchange efficiency between the air and the SMA spring.

[0053] Further, the pop-in refrigeration device can also include a fixed plate 3, the rotating motor 111, the heat exchange chamber 23, the first bearing with seat 12a, the second bearing with seat 12b, the third bearing with seat 12c, the fourth bearing with seat 12d, the fifth bearing with seat 114 and the sixth bearing with seat 115 are all fixed on the fixed plate 3.

[0054] The working principle of the pop-in refrigeration device of the embodiment is as follows:

[0055] The SMA spring unit 24 is in the original length state when it rotates to the leftmost side of the device (i.e. the side far away from the transmission shaft); with the continuous rotation, the length of the SMA spring unit 24 gradually increases under the action of the symmetrically arranged rotating disc, and the SMA spring unit 24 is gradually stretched. Due to the effect of the thermoelasticity, the SMA spring releases latent heat of phase transition during the adiabatic stretching process, and the temperature rises. In the embodiment, the above loading process is in the water cooling environment of the base all the time. The distilled water in the base 23b continuously dissipates heat through the external heat exchange chamber 23, and maintains the room temperature, so that the heat released by the SMA spring during the loading process is taken away by the water in time, so that the temperature of the SMA spring still basically maintains the room temperature when it reaches the rightmost side of the maximum stretching state.

[0056] Subsequently, the SMA spring unit 24 enters the unloading stage, the length gradually decreases, the SMA spring absorbs latent heat to cause temperature drop, absorbs the heat of the air flowing through the air in the upper cover 23a, and realizes the refrigeration of the air. Overall, the device forms a heat dissipation area close to room temperature at the base 23b of the heat exchange chamber 23, and forms a refrigeration area below room temperature at the upper cover 23a. The cross-flow fan 25 transports the air to the refrigeration area for cooling and output, forming a continuous refrigeration effect.

[0057] In summary, the embodiment forms a large heat exchange area in the refrigeration area by densely arranging the SMA spring unit 24. This design enhances the heat exchange efficiency between the SMA spring and the air, and on the other hand, the SMA spring is wetted in the water in the base 23b, and when entering the refrigeration area, a large area of water film is attached to the surface. Under forced convection conditions, the evaporation effect of the water film is significantly enhanced, and the temperature drop effect brought by evaporative cooling is significant. Therefore, the device realizes the synergistic effect of the two modes of evaporative cooling and spring card refrigeration, and the refrigeration performance breaks through the limit of a single mode. Combined with the multi-unit synergistic work recovery mechanism, the system input power is greatly reduced, the output refrigeration capacity is significantly improved, and the overall energy efficiency ratio is much higher than that of the traditional spring card refrigeration device.

[0058] The embodiment also provides an application method of the device, which includes multiple working modes to adapt to different application requirements.

[0059] Refrigeration temperature-power adjustment mode: under the condition of fixed wind speed, increasing the rotating speed of the rotating disc can reduce the supply air temperature and increase the refrigeration power, while the input power of the rotating motor 111 increases correspondingly; under the condition of fixed rotating speed, increasing the wind speed can increase the refrigeration power, but due to the shortening of the heat exchange time, the supply air temperature increases, and the power consumption of the cross-flow fan 25 increases.

[0060] Circulating intermittent minimum temperature supply mode: by configuring a circulating air duct, the cooled air discharged by the cross-flow fan 25 is sent into the heat exchange chamber again. The temperature of the air gradually decreases in the circulation, and is discharged from the heat exchange chamber after being stabilized at the minimum temperature, and then the air is sucked into the outside air again to repeat the circulation, so as to realize the intermittent output of the minimum temperature cold air.

[0061] In the description of the application, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise expressly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two components. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0062] The above only describes the preferred embodiments of the application and is not intended to limit the application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the application shall be included in the protection scope of the 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. 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. The transmission module also 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. 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. The heat exchange module further includes a guide column, which is installed between the first and second rotating disks. The outer periphery of the guide column extends tangentially with multiple circumferentially spaced guide vanes. Multiple SMA spring units are spaced apart around the guide column.

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 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.

5. The spring-loaded cooling device according to any one of claims 1 to 4, 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.

6. A method for applying the spring-loaded cooling device as described in any one of claims 1 to 5, characterized in that, The application method includes: Cooling Temperature-Power Adjustment Mode: At a fixed fan speed, increasing the rotation speed of the first and second discs can reduce the supply air temperature and increase the cooling power, while the input power of the transmission module increases accordingly; at a fixed speed, increasing the fan speed can increase the cooling power, but due to the shortened heat exchange time, the supply air temperature rises, and the power consumption of the crossflow fan increases; Circulating 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 re-inhales outside air and repeats the circulation, thereby achieving intermittent output of the lowest temperature cold air.

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