Refrigerating and heating device based on solid elastic card

Abstract

The invention provides a refrigerating and heating device based on a solid elastic clamp, and belongs to the technical field of refrigerating and heating, the refrigerating and heating device comprises a main shell, a transmission mechanism, a solid elastic clamp mechanism and a power mechanism, and the main shell is internally provided with an assembly cavity; the transmission mechanism comprises a special-shaped cam and a driving module, the driving module is provided with a contact end, and the two sides of the outer circle of the special-shaped cam are provided with a large arc surface and a small arc surface respectively; the solid elastic clamping mechanism comprises a sleeve and a solid elastic clamping material; the power mechanism is provided with a driving shaft which is used for driving the special-shaped cam to rotate along the central axis of the special-shaped cam. According to the refrigerating and heating device based on the solid elastic clamp, sufficient time can be reserved for contact between fluid and a solid elastic clamp material, the problem that the fluid heat transfer time is insufficient due to the fact that an existing driving structure is switched too fast is solved, and the situation that cold and heat energy is lost before being fully utilized is avoided; the heat transfer efficiency is greatly improved, meanwhile, energy loss caused by cold and heat neutralization is reduced, and the stable refrigerating and heating effect of the device is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of refrigeration and heating, and more particularly relates to a refrigeration and heating device based on solid-state elastic card. BACKGROUND

[0002] With the increasing attention to the environment, the research on refrigerants is becoming more and more extensive and in-depth. At present, green and environmentally friendly solid-state refrigerants are attracting more and more attention as a new type of refrigeration technology. In the refrigeration equipment made of solid-state elastic card material (shape memory alloy), the periodic application of stress and unloading of stress to the shape memory alloy by the driver makes the shape memory alloy release heat to rise in temperature and absorb heat to drop in temperature. Therefore, in order to effectively utilize the heat and cold produced by the shape memory alloy, a pipeline and a fluid are usually provided in the refrigeration and heating equipment, so that the fluid (medium) can take out the heat or cold produced by the shape memory alloy to the heat exchanger to supply cold or heat to the external target environment.

[0003] At present, the mainstream driving scheme in the industry adopts a motor cooperating with a crank slider mechanism or a conventional cam mechanism to realize the periodic loading and unloading of the solid-state elastic card material. However, in actual application, if the above driving scheme is adopted, the switching between the loading mode and the unloading mode will be completed instantaneously. Specifically, when the fluid has not fully flowed through the pipeline and contacted the solid-state elastic card material to completely absorb the released heat during the loading and heating phase, the driving structure has completed the switching and entered the unloading and cooling phase. Conversely, when the fluid has not fully absorbed the cold during the unloading and cooling phase, it switches back to the loading phase. This rapid switching results in too short effective contact time of the fluid with the solid-state elastic card material, and the heat transfer process is insufficient, which not only causes a large waste of cold and heat energy, but also seriously reduces the heat transfer efficiency and refrigeration and heating effect of the entire device, and cannot meet the energy utilization demand in actual application. SUMMARY

[0004] The present application aims to provide a refrigeration and heating device based on solid-state elastic card, which aims to solve the problems of too fast switching between loading and unloading of the existing driving structure, insufficient fluid heat transfer time, low heat transfer efficiency and energy loss.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is to provide a refrigeration and heating device based on solid-state elastic card, comprising: a main housing having an assembly chamber inside; a transmission mechanism located in the assembly chamber, the transmission mechanism comprising a special-shaped cam and a driving module, the driving module having a contact end near one side of the special-shaped cam, and the special-shaped cam having a large circular arc surface and a small circular arc surface on both sides of its outer circle; A solid spring clip mechanism includes a solid spring clip material, which is connected to the drive module. The solid spring clip material is connected to the drive module so that the contact end always abuts against the outer circle of the irregular cam. A power mechanism includes a drive shaft disposed in the assembly cavity, the drive shaft being used to drive the irregularly shaped cam to rotate along its central axis; The rotating cam causes the contact end to move along the large arc surface, thereby performing a loading and holding action on the solid spring material through the drive module; or causes the contact end to move along the small arc surface, thereby performing an unloading and holding action on the solid spring material through the drive module.

[0006] In one possible implementation, the central axis of the large arc surface and the central axis of the small arc surface are both coaxial with the central axis of the drive shaft, and a transition surface is provided between the large arc surface and the small arc surface.

[0007] In one possible implementation, the central angle of the large circular arc surface is equal to the central angle of the small circular arc surface. In one possible implementation, the drive module includes: A drive block, located within the assembly cavity, has the degree of freedom to move closer to or further away from the irregularly shaped cam; The force transmission rod is connected at one end to the side of the drive block away from the irregular cam, and at the other end to the solid spring clip material; The contact end is located on the side of the drive block near the irregularly shaped cam.

[0008] In one possible implementation, the drive block has a mounting groove at one end near the irregularly shaped cam, and a contact disk is rotatably disposed in the mounting groove. The portion of the contact disk protruding from the mounting groove constitutes the contact end.

[0009] In one possible implementation, rolling bearing assemblies are provided at both ends of the drive block, and the rolling bearing assemblies roll into contact with the inner wall of the assembly chamber to move the drive block in a direction closer to or further away from the irregular cam.

[0010] In one possible implementation, a mounting sleeve is provided on one side of the main housing, and a sleeve is provided on the outer sleeve of the solid spring clip material. The sleeve is coaxially disposed on the side of the mounting sleeve away from the main housing. A connecting sleeve is provided between the mounting sleeve and the sleeve, and the two ends of the connecting sleeve are respectively inserted into the mounting sleeve and the sleeve to connect the two. The force transmission rod passes through the connecting sleeve and is used to connect the drive block and the solid spring clip material respectively.

[0011] In one possible implementation, the same transmission mechanism includes two drive modules, which are respectively disposed on both sides of the irregular cam, and the two drive modules synchronously perform the unloading holding action and the loading holding action. The two solid-state spring clip mechanisms are respectively connected to both sides of the main housing.

[0012] In one possible implementation, multiple transmission mechanisms are arranged at intervals along the central axis of the drive shaft, and the drive shaft is sequentially connected to multiple irregularly shaped cams of the multiple transmission mechanisms. Among them, the multiple solid spring clip mechanisms on the same side correspond one-to-one with the multiple irregularly shaped cams, and are spaced apart on the same side of the main housing along the central axis of the drive shaft.

[0013] In one possible implementation, adjacent irregularly shaped cams have a phase difference Δφ along the central axis of the drive shaft; Where Δφ=360° / n, and n is the number of irregularly shaped cams.

[0014] The beneficial effects of the solid-state spring-loaded cooling and heating device provided by this invention are as follows: Compared with the prior art, this solution uses an irregularly shaped cam with a large and small arc surface on its outer circle. Combined with the action of the solid-state spring-loaded material on the drive module, the contact end always abuts against the outer circle of the cam. When the irregularly shaped cam rotates, driving the contact end to move along the large or small arc surface, it can perform loading and unloading holding actions. Compared with the instantaneous switching design of loading and unloading in the prior art, this provides sufficient time for the fluid to contact the solid-state spring-loaded material, solving the problem of insufficient fluid heat transfer time caused by the excessively rapid switching of the existing drive structure. Furthermore, the fluid fully absorbs the heat released by the solid-state spring-loaded material during the loading phase and the cold energy absorbed during the unloading phase, avoiding the loss of thermal energy before it is fully utilized. This significantly improves heat transfer efficiency while reducing energy loss caused by thermal neutralization, ensuring a stable cooling and heating effect for the device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of a solid-state spring-loaded cooling and heating device provided in an embodiment of the present invention; Figure 2A cross-sectional view of a solid-state spring-loaded cooling and heating device provided in an embodiment of the present invention. Figure 1 ; Figure 3 A partial view of the solid-state spring-loaded cooling and heating device provided in an embodiment of the present invention after removing the casing; Figure 4 A cross-sectional view of a solid-state spring-loaded cooling and heating device provided in an embodiment of the present invention. Figure 2 ; Figure 5 This is a cross-sectional view of the solid-state spring clip mechanism provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the irregularly shaped cam provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the driving block provided in an embodiment of the present invention.

[0017] In the picture: 100. Main housing; 110. Assembly chamber; 111. Guide groove; 120. Mounting sleeve; 210. Irregular cam; 211. Large arc surface; 212. Small arc surface; 213. Transition surface; 214. Shaft hole; 220. Drive block; 221. Rolling bearing assembly; 230. Contact disc; 231. Contact end; 240. Force transmission rod; 300. Solid spring clip mechanism; 310. Sleeve; 320. Solid spring clip material; 330. Pressure head; 340. Connecting sleeve; 400. Power mechanism; 410. Drive shaft. Detailed Implementation

[0018] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0019] Unless otherwise explicitly specified, the use of terms such as "first," "second," or "third" is intended to distinguish different objects, not to describe a specific order.

[0020] Unless otherwise expressly defined, the use of directional terms such as “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “clockwise,” “counterclockwise,” “high,” and “low” to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to 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 limiting the specific scope of protection of the invention.

[0021] Please see Figures 1 to 7 The present invention will now describe a cooling and heating device based on a solid-state spring clip. The cooling and heating device based on a solid-state spring clip includes a main housing 100, a transmission mechanism, a solid-state spring clip mechanism 300, and a power mechanism 400.

[0022] The main housing 100 has an assembly chamber 110 inside; the transmission mechanism is located in the assembly chamber 110, and the transmission mechanism includes a shaped cam 210 and a drive module. The drive module has a contact end 231 on the side near the shaped cam 210. The outer circles of the shaped cam 210 have a large arc surface 211 and a small arc surface 212 on their respective sides; the solid spring clip mechanism 300 includes a solid spring clip material 320, which is connected to the drive module. The solid spring clip material 320 is driven by the drive module to keep the contact end 231 always in contact. The contact end 231 moves along the large arc surface 211 to perform a loading and holding action on the solid spring material 320 through the drive module; or the contact end 231 moves along the small arc surface 212 to perform an unloading and holding action on the solid spring material 320 through the drive module.

[0023] This invention provides a cooling and heating device based on a solid-state spring clip. Compared with existing technologies, this solution uses a uniquely shaped cam 210 with an outer circle containing a large arc surface 211 and a small arc surface 212. The solid-state spring clip material 320, acting on the drive module, ensures that the contact end 231 always abuts against the outer circle of the cam. When the uniquely shaped cam 210 rotates, driving the contact end 231 to move along the large arc surface 211 or the small arc surface 212, it can perform loading and holding or unloading holding actions. Compared with the instantaneous switching design of existing technologies, this provides sufficient time for the fluid to contact the solid-state spring clip material 320, solving the problem of insufficient fluid heat transfer time caused by the excessively rapid switching of existing drive structures. Furthermore, the fluid fully absorbs the heat released by the solid-state spring clip material 320 during the loading phase and the cold energy absorbed during the unloading phase, avoiding the loss of thermal energy before it is fully utilized. This significantly improves heat transfer efficiency while reducing energy loss caused by thermal neutralization, ensuring a stable cooling and heating effect for the device.

[0024] It should be noted that: Solid spring material 320 refers to an alloy material with shape memory effect, such as nickel-titanium alloy. Its core characteristic is that it undergoes a phase change and releases heat when under stress loading, and returns to its original shape and absorbs heat when under stress unloading. It is the core functional material for realizing the energy conversion of cooling and heating, and can also be called a shape memory alloy. The loading and holding action refers to the process of applying constant stress to the solid spring material 320 and maintaining this state. During this process, the solid spring material 320 releases heat, corresponding to the heating mode of the device. The unloading and holding action refers to the process of relieving the stress on the solid spring material 320 and maintaining this relaxed state. During this process, the solid spring material 320 absorbs heat, corresponding to the cooling mode of the device.

[0025] Specifically, the cooling and heating device based on solid-state spring clips mainly includes a main housing 100, a transmission mechanism, a solid-state spring clip mechanism 300, and a power mechanism 400. The components work together to achieve the periodic loading and unloading of the solid-state spring clip material 320, thereby completing the cooling and heating cycle.

[0026] The main housing 100 is integrally formed from high-strength aluminum alloy material, and has a closed assembly chamber 110 inside. Mounting sleeves 120 are symmetrically arranged on both sides of the main housing 100. The mounting sleeves 120 and the main housing 100 are integrally formed, and their axes are collinear with the central axis of the assembly chamber 110. The inner wall of the mounting sleeves 120 has an internal thread structure for connecting the subsequent connecting sleeve 340.

[0027] The transmission mechanism is located within the assembly chamber 110 to achieve loading and unloading holding actions. It includes a shaped cam 210 and a drive module. The outer circumference of the shaped cam 210 has a large arc surface 211 and a small arc surface 212 on its two sides, connected by a transition surface 213. A shaft hole 214 is provided in the middle of the shaped cam 210, which is connected to the drive shaft 410 via a key, ensuring that the central axes of the large arc surface 211 and the small arc surface 212 are coaxial with the central axis of the drive shaft 410 of the power mechanism 400. The drive module has a contact end 231 on the side near the irregular cam 210. Under the elastic force of the solid spring mechanism 300, the contact end 231 always abuts against the outer circle of the irregular cam 210 (including the large arc surface 211, the small arc surface 212 and the transition surface 213), ensuring the continuity and stability of the transmission.

[0028] The solid spring clip mechanism 300 provides elastic force and achieves energy conversion, and includes a sleeve 310, a solid spring clip material 320, and a connecting sleeve 340. The sleeve 310 is made of high-temperature and corrosion-resistant stainless steel, and has a hollow cavity inside, closed at one end and open at the other. The solid spring clip material 320 is coaxially disposed within this hollow cavity, with one end abutting against the bottom of the closed end of the hollow cavity of the sleeve 310, and the other end connected to a pressure head 330, which is fixedly connected to the force transmission rod 240 of the drive module. The sleeve 310 is connected to the mounting sleeve 120 of the main housing 100 via the connecting sleeve 340. Both ends of the connecting sleeve 340 are provided with external threads, which are threaded into the internal threaded holes of the mounting sleeve 120 and the sleeve 310, enabling detachable fixing of all three components and facilitating later maintenance and replacement of the solid spring clip material 320.

[0029] The power mechanism 400 is located outside the main housing 100 and uses a servo motor as the power source. Its output end is connected to a drive shaft 410, which passes through a bearing into the assembly chamber 110 and is keyed to the shaft hole 214 of the shaped cam 210 to drive the shaped cam 210 to rotate along its central axis. In addition, the power mechanism 400 is also equipped with a reduction gearbox, which adjusts the output speed of the drive shaft 410 so that the rotation cycle of the shaped cam 210 meets the requirements of the heat transfer maintenance time.

[0030] Please see Figure 2 and Figure 6 The irregular cam 210 is generally disc-shaped, with a shaft hole 214 in the center that mates with the drive shaft 410. The inner wall of the shaft hole 214 is provided with a keyway, and it is fixedly connected to the drive shaft 410 by a flat key to ensure reliable torque transmission.

[0031] The outer circle of the irregular cam 210 is composed of a large arc surface 211, a small arc surface 212, and a transition surface 213, wherein: The difference between the radius of the large arc surface 211 and the radius of the small arc surface 212 is the maximum stroke of the drive module, which is the maximum deformation of the solid spring material 320. This difference can be adjusted according to the elastic modulus, allowable strain and required cold and hot output power of the solid spring material 320.

[0032] The central angle of the large arc surface 211 and the central angle of the small arc surface 212 are equal, both being θ. The transition surface 213 adopts an arc transition to ensure that the contact end 231 moves smoothly when switching between the large arc surface 211 and the small arc surface 212, avoiding impact.

[0033] The centers of the large arc surface 211 and the small arc surface 212 coincide with the central axis of the shaft hole 214 of the irregular cam 210 (the central axis of the drive shaft 410), that is, the two are concentric circle structures, which ensures that when the contact end 231 moves along the large arc surface 211 or the small arc surface 212, the displacement of the drive module remains constant, thus achieving the effect of loading and unloading.

[0034] The central angles of the large arc surface 211 and the small arc surface 212 determine the percentage of the heat transfer maintenance time in half a cycle (heat transfer maintenance percentage a%), where a% = θ / 180, and θ is the angle between the large and small arc surfaces. In this embodiment, the rotation cycle of the irregular cam 210 is 2s (i.e., 30 revolutions per minute), half a cycle is 1s, and the central angle θ of the large arc surface 211 is 150°. Therefore, the heat transfer maintenance percentage a% = θ / 180° ≈ 83.3%, and the loading holding time t2 = a% × 1s ≈ 0.833s; the switching time of the transition surface 213 is (1-a%) × 1s ≈ 0.167s. Similarly, the unloading holding time t1 is equal to the loading holding time t2, which is also 0.833s. Through this parameter design, the effective contact time between the fluid and the solid elastic card material 320 is significantly extended, solving the problem of insufficient heat transfer caused by excessively fast switching in the prior art.

[0035] In practical applications, the central angles of the large arc surface 211 and the small arc surface 212 can be adjusted according to different cooling and heating requirements. If it is necessary to prioritize improving heat transfer efficiency, the central angle can be increased to increase the heat transfer maintenance percentage a% and extend the holding time; if it is necessary to prioritize increasing the cooling and heating frequency, the central angle can be decreased to decrease the heat transfer maintenance percentage a% to shorten the holding time and increase the switching frequency, thereby balancing heat transfer efficiency and cycle frequency. The value of θ ranges from 90° to 170°, and the heat transfer maintenance percentage ranges from 50% to 94.4%, with specific values ​​of θ being 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, and 170°. Preferably, the value of θ ranges from 108° to 144°, and the heat transfer maintenance percentage ranges from 60% to 80%, with specific values ​​of θ being 108°, 118°, 128°, 138°, and 144°. The value of θ is more preferably 126°, and the heat transfer retention percentage is 70%.

[0036] Please see Figure 2 The drive module is used to convert the rotational motion of the irregular cam 210 into linear motion, thereby applying stress or relieving stress on the solid spring material 320. Its structure includes a drive block 220, a force transmission rod 240 and a contact end 231.

[0037] The drive block 220 has a rectangular parallelepiped structure, and its length is adapted to the width of the assembly chamber 110 to ensure that the structural strength is sufficient to withstand the reaction force of the solid spring clip material 320. The drive block 220 has a mounting groove at one end near the irregular cam 210, and the mounting groove is a cylindrical groove.

[0038] The contact end 231 adopts a contact disc 230 structure. The contact disc 230 is rotatably mounted in the mounting groove via a rotating shaft. The two ends of the rotating shaft are interference-fitted with the side walls of the mounting groove. The contact disc 230 can rotate freely around the rotating shaft, and its protruding part in the mounting groove contacts the outer circle of the irregular cam 210. By adopting the rotating contact disc 230 design, the sliding friction between the contact end 231 and the irregular cam 210 can be converted into rolling friction, which greatly reduces friction, reduces energy loss, avoids wear on the contact surface, and extends service life.

[0039] The force transmission rod 240 is made of stainless steel round rod, and its length is adjusted according to the thickness of the main housing 100 and the installation position of the sleeve 310. In this embodiment, one end of the force transmission rod 240 is fixed to the center position of the drive block 220 away from the irregular cam 210 by thread connection to ensure a firm connection; the other end is inserted into the connecting sleeve 340 and fixedly connected to the pressure head 330. One end of the pressure head 330 that protrudes from the connecting sleeve 340 is fixed to one end of the solid spring clip material 320 by welding.

[0040] To ensure smooth movement of the drive block 220 along the direction of approaching or moving away from the irregular cam 210, rolling bearing assemblies 221 are respectively provided at both ends of the drive block 220. Each rolling bearing assembly 221 includes two deep groove ball bearings, symmetrically arranged at the upper and lower ends of the drive block 220. The inner rings of the bearings are fixedly connected to the drive block 220 via bearing housings, and the outer rings roll into contact with the inner wall of the assembly chamber 110. A guide groove 111 is provided on the inner wall of the assembly chamber 110 corresponding to the movement path of the rolling bearing assembly 221. The width of the guide groove 111 is adapted to the diameter of the outer ring of the bearing, used to limit the movement direction of the drive block 220, preventing it from shifting or rotating, and ensuring the linear motion accuracy of the force transmission rod 240.

[0041] Please see Figure 1 and Figure 5 The solid-state spring clip mechanism 300 is the core component for energy conversion, and it includes a sleeve 310, a solid-state spring clip material 320, and a connecting sleeve 340. The sleeve 310 is a cylindrical hollow structure with one end closed and the other end open; the solid-state spring clip material 320 is made of nickel-titanium shape memory alloy wire bundle; the connecting sleeve 340 is made of stainless steel and is connected to the internal threads of the mounting sleeve 120 and the sleeve 310.

[0042] During assembly, first fix one end of the solid spring clip material 320 to the closed end of the sleeve 310. Then, connect the pressure head 330 to the end of the force transmission rod 240 away from the drive block 220. The end of the force transmission rod 240 with the pressure head 330 protrudes through the connecting sleeve 340 and is welded to the other end of the solid spring clip material 320. Next, screw one end of the connecting sleeve 340 into the mounting sleeve 120 of the main housing 100. Finally, screw the sleeve 310 into the other end of the connecting sleeve 340, completing the assembly of the solid spring clip mechanism 300 with the main housing 100 and the drive module. During assembly, it is necessary to ensure that the solid spring clip material 320 is in a naturally relaxed state without preload to avoid affecting the stroke accuracy of loading and unloading.

[0043] The power mechanism 400 adopts an integrated design of servo motor and gearbox. The servo motor is equipped with an encoder, which can provide real-time feedback on the rotation angle and speed of drive shaft 410, making it easy to accurately control the position of irregular cam 210 and achieve precise switching between loading and unloading.

[0044] One end of the drive shaft 410 is connected to the output end of the gearbox via a coupling. The drive shaft 410 is supported by a deep groove ball bearing in a bearing seat embedded in the side wall of the main housing 100. The end of the drive shaft 410 that passes through the assembly chamber 110 is connected to the shaft hole 214 of the irregular cam 210 via a key connection.

[0045] The shaped cam 210 is connected to the drive shaft 410 via a keyway. A keyway is provided on the drive shaft 410 corresponding to the mounting position of the shaped cam 210, and a corresponding keyway is also provided on the inner wall of the shaft hole 214 of the shaped cam 210. The keyway is embedded in the keyway to achieve torque transmission. To prevent the shaped cam 210 from moving axially along the drive shaft 410, a shoulder and a locking nut are also provided on the drive shaft 410. The shoulder is used to position one end of the shaped cam 210, and the locking nut is screwed onto the threaded section of the drive shaft 410, pressing against the other end of the shaped cam 210 to ensure reliable fixation of the shaped cam 210 on the drive shaft 410 and prevent axial movement.

[0046] Please see Figure 3 and Figure 4 To further improve the power recovery efficiency, the same transmission mechanism includes two drive modules, which are respectively set on both sides of the irregular cam 210 and are symmetrically distributed. The corresponding two solid spring clip mechanisms 300 are also respectively connected to both sides of the main housing 100 to form a symmetrical module structure.

[0047] The two drive modules have identical structures, with their contact ends 231 abutting against the outer circles on both sides of the shaped cam 210. When the shaped cam 210 rotates, the drive module on one side moves along the large arc surface 211 to perform a load holding action, while the drive module on the other side moves along the small arc surface 212 to perform an unload holding action. When the shaped cam 210 rotates 180°, the drive modules on both sides switch actions, that is, the drive module that originally performed load holding switches to unload holding, and the drive module that originally performed unload holding switches to load holding.

[0048] This symmetrical design allows the solid spring mechanism 300 on both sides of the irregular cam 210 to alternately perform heating (load holding, releasing heat) and cooling (unload holding, absorbing heat). The fluid circuits on both sides can collect heat and cold respectively, avoiding the neutralization of heat and cold. At the same time, the reaction force generated when the drive module on one side is loaded can partially offset the force when the drive module on the other side is unloaded, reducing the load torque of the drive shaft 410, realizing bidirectional power recovery, and further reducing the energy consumption of the power mechanism 400.

[0049] When the device needs to increase the cooling and heating power, multiple transmission mechanisms can be arranged at intervals along the central axis of the drive shaft 410 to realize the synchronous operation of multiple sets of solid spring clip materials 320. At the same time, through the phase difference design of adjacent irregular cams 210, power recovery is realized to reduce energy consumption.

[0050] In this embodiment, there are two transmission mechanisms, evenly spaced along the central axis of the drive shaft 410 to accommodate the installation requirements of the two sets of transmission mechanisms while ensuring the compactness of the overall structure. Each transmission mechanism has a drive module symmetrically arranged on both sides, therefore the entire device contains four drive modules, corresponding to four solid spring-loaded mechanisms 300. Two solid spring-loaded mechanisms 300 on the same side correspond one-to-one with two irregularly shaped cams 210, and are spaced apart on the same side of the main housing 100 along the central axis of the drive shaft 410. There are gaps between adjacent solid spring-loaded mechanisms 300 to ensure that each group of mechanisms does not interfere with each other during movement and independently completes the loading and unloading holding actions.

[0051] The phase difference between adjacent irregular cams 210 along the central axis of the drive shaft 410 is Δφ, where Δφ = 360° / n (n is the number of irregular cams 210).

[0052] Specifically, the complete 360° rotation cycle of the drive shaft 410 is evenly distributed to the two irregularly shaped cams 210, ensuring that the switching times of the two sets of transmission mechanisms are completely staggered, avoiding load superposition caused by synchronous switching. This is combined with the symmetrical design of the dual-side drive modules of each transmission mechanism. In this embodiment, n=2, therefore the phase difference Δφ=360° / 2=180°, meaning the keyways of the two irregularly shaped cams 210 are 180° apart circumferentially along the drive shaft 410, ensuring that the switching times of the two sets of transmission mechanisms are exactly half a cycle apart, achieving completely opposite movements.

[0053] By combining the dual-side drive module design of each transmission mechanism, the phase difference enables a dual power recovery effect. Specifically, the two drive modules of the same transmission mechanism are symmetrically distributed. When the irregular cam 210 rotates, one side of the drive module performs a loading and holding action, while the other side performs an unloading and holding action. The forces on both sides cancel each other out, reducing the load torque of a single mechanism. In addition, due to the 180° phase difference between the two irregular cams 210, the actions of the two transmission mechanisms are completely opposite. When the left module of the first transmission mechanism is loaded and the right module is unloaded, the left module of the second transmission mechanism is unloaded and the right module is loaded. The forces of the four drive modules form a cross-cancellation effect.

[0054] This dual power recovery mode minimizes sudden load changes in the power mechanism and significantly reduces the peak power demand of the motor. For example, when the first transmission mechanism switches from "left loading, right unloading" to "left unloading, right loading," the second transmission mechanism is switching from "left unloading, right loading" to "left loading, right unloading." The switching actions of the two mechanisms are completely opposite, and the instantaneous load generated during the switching process cancels each other out, avoiding the load peak that may occur when switching a single mechanism. At the same time, the staggered switching ensures that the device always has two modules in the loading state and two modules in the unloading state. The heat released during loading and the cold absorbed during unloading are balanced, reducing energy loss caused by heat neutralization and greatly improving the energy utilization efficiency of the device.

[0055] The present invention also provides a cam drive device, including a transmission mechanism and a power mechanism 400; The transmission mechanism includes a shaped cam 210 and a drive module for loading or unloading solid spring material 320. The drive module has a contact end 231 that always abuts against the outer circle of the shaped cam 210. The outer circle of the shaped cam 210 has a large arc surface 211 and a small arc surface 212 on both sides respectively. The power mechanism 400 includes a drive shaft 410, which is used to drive the irregular cam 210 to rotate along its central axis; The irregularly shaped cam 210 rotates, causing the contact end 231 to move along the large arc surface 211, thereby performing a loading and holding action on the solid spring material 320 through the drive module; or it causes the contact end 231 to move along the small arc surface 212, thereby performing an unloading and holding action on the solid spring material 320 through the drive module.

[0056] It should be noted that the specific implementation of the transmission mechanism and power mechanism 400 of the cam drive device in this embodiment refers to the cooling and heating device of the solid spring card mentioned above, and will not be repeated here.

[0057] This structure is particularly suitable for low-power, high-stability applications, such as small household air conditioners and vehicle auxiliary temperature control equipment. It is not only compact and space-saving, but also achieves efficient energy utilization at low power output through a dual power recovery design. It also boasts stable operation and low noise, making it perfectly suited for environments with high requirements for equipment size and stability. If further power increases are needed, the number of transmission mechanisms can be increased based on this structure, with the phase difference adjusted synchronously according to Δφ=360° / n to maintain the continuity of the power recovery effect.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cooling and heating device based on a solid-state spring-loaded card, characterized in that, include: The main housing (100) has an assembly chamber (110) inside; The transmission mechanism is located in the assembly chamber (110). The transmission mechanism includes a shaped cam (210) and a drive module. The drive module has a contact end (231) on the side close to the shaped cam (210). The outer circles of the shaped cam (210) have a large arc surface (211) and a small arc surface (212) on their respective sides. Solid spring clip mechanism (300) includes solid spring clip material (320), the solid spring clip material (320) is connected to the drive module, and the solid spring clip material (320) is connected to the drive module so that the contact end (231) always abuts against the outer circle of the irregular cam (210); The power mechanism (400) includes a drive shaft (410) disposed in the assembly chamber (110) and the drive shaft (410) is used to drive the irregular cam (210) to rotate along its central axis; The shaped cam (210) rotates, causing the contact end (231) to move along the large arc surface (211) to perform a loading and holding action on the solid spring material (320) through the drive module; or causing the contact end (231) to move along the small arc surface (212) to perform an unloading and holding action on the solid spring material (320) through the drive module.

2. The cooling and heating device based on a solid-state spring-loaded card as described in claim 1, characterized in that, The central axis of the large arc surface (211) and the central axis of the small arc surface (212) are both coaxial with the central axis of the drive shaft (410), and a transition surface (213) is provided between the large arc surface (211) and the small arc surface (212).

3. The cooling and heating device based on a solid-state spring-loaded card as described in claim 2, characterized in that, The central angle of the large circular arc surface (211) is equal to the central angle of the small circular arc surface (212).

4. The cooling and heating device based on a solid-state spring-loaded card as described in claim 1, characterized in that, The drive module includes: A drive block (220) is located in the assembly chamber (110) and has the freedom to move closer to or further away from the irregular cam (210); The force transmission rod (240) is connected at one end to the side of the drive block (220) away from the irregular cam (210), and at the other end to the solid spring clip material (320); The contact end (231) is located on the side of the drive block (220) near the irregular cam (210).

5. A cooling and heating device based on a solid-state spring-loaded card as described in claim 4, characterized in that, The drive block (220) has an installation groove at one end near the irregular cam (210), and a contact disc (230) is rotatably disposed in the installation groove. The part of the contact disc (230) protruding from the installation groove constitutes the contact end (231).

6. A cooling and heating device based on a solid-state spring-loaded card as described in claim 4, characterized in that, The drive block (220) is provided with rolling bearing assemblies (221) at both ends. The rolling bearing assemblies (221) are in rolling engagement with the inner wall of the assembly chamber (110) so that the drive block (220) moves in a direction closer to or away from the irregular cam (210).

7. A cooling and heating device based on a solid-state spring-loaded card as described in claim 4, characterized in that, A mounting sleeve (120) is provided on one side of the main housing (100), and a sleeve (310) is provided on the outer sleeve of the solid spring clip material (320). The sleeve (310) is coaxially disposed on the side of the mounting sleeve (120) away from the main housing (100). A connecting sleeve (340) is provided between the mounting sleeve (120) and the sleeve (310). The two ends of the connecting sleeve (340) are respectively inserted into the mounting sleeve (120) and the sleeve (310) to connect the two. The force transmission rod (240) passes through the connecting sleeve (340) and is used to connect the drive block (220) and the solid spring clip material (320) respectively.

8. A cooling and heating device based on a solid-state spring-loaded card as described in any one of claims 1-7, characterized in that, The same transmission mechanism includes two drive modules, which are respectively disposed on both sides of the irregular cam (210). The two drive modules synchronously execute the unloading holding action and the loading holding action. The two solid-state spring clip mechanisms (300) are respectively connected to both sides of the main housing (100).

9. A cooling and heating device based on a solid-state spring-loaded card as described in claim 8, characterized in that, The transmission mechanism is arranged in multiple ways along the central axis of the drive shaft (410), and the drive shaft (410) is connected in sequence to multiple irregular cams (210) of the multiple transmission mechanisms; Among them, the multiple solid spring clip mechanisms (300) on the same side correspond one-to-one with the multiple irregular cams (210), and are spaced apart on the same side of the main housing (100) along the central axis direction of the drive shaft (410).

10. A cooling and heating device based on a solid-state spring-loaded card as described in claim 9, characterized in that, The adjacent irregular cams (210) have a phase difference Δφ along the central axis of the drive shaft (410); Where Δφ=360° / n, and n is the number of irregular cams (210).

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