Power recovery multi-cylinder refrigerating and heating device

Abstract

The utility model provides a work recovery multi-cylinder refrigerating and heating device, which belongs to the technical field of refrigerating and heating, and comprises a power mechanism, a multi-linkage transmission mechanism and a plurality of solid elastic clamping heat regenerators, the multi-linkage transmission mechanism comprises a mounting bracket, an eccentric wheel rod and a plurality of driving rods, and the mounting bracket and the solid elastic clamping heat regenerators are fixedly arranged relatively; the eccentric wheel rod is rotationally arranged on the mounting bracket and is connected with the power mechanism, a plurality of eccentric wheels are arranged on the eccentric wheel rod at intervals, and the plurality of eccentric wheels are arranged according to a non-zero phase angle; the driving rods are arranged on the mounting support in a sliding mode and correspond to the eccentric wheels respectively, one end of each driving rod abuts against the corresponding eccentric wheel, and the other end of each driving rod is connected with one solid elastic clamping heat regenerator so that power can be input to the solid elastic clamping heat regenerators under driving of the eccentric wheels. According to the utility model, the springback work of the solid elastic clamping heat regenerator can be recycled, so that the power mechanism can output power more stably, and the energy loss is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of refrigeration and heating technology, more specifically, relates to a work recovery multi-cylinder refrigeration and heating device. BACKGROUND

[0002] Space refrigeration is an important guarantee for people to maintain high quality of life in modern times. In the prior art, compressors are mainly used for refrigeration. However, the refrigerant used in gas compression refrigerators has many problems. The refrigerant (such as chlorine and bromine refrigerant) is manufactured and leaked in large quantities in the environment, causing great damage to the environment.

[0003] In recent years, a solid-state elastic card refrigeration and heating technology has emerged. Solid-state elastic card refrigeration and heating is a new green and environmentally friendly refrigeration and heating technology. By loading or unloading solid-state elastic card materials, phase change or reverse phase change occurs to generate heat or cold, thereby refrigerating or heating. Then, the generated heat or cold is discharged by using a heat-conducting fluid.

[0004] However, the existing solid-state elastic card refrigeration equipment is basically in the theoretical and experimental stages, and the refrigeration and heating capacity is too small to meet the needs of practical applications. When the refrigeration capacity increases to a certain extent (such as 1 ton), the stress applied to the elastic card material by the power mechanism is too large, and the power mechanism and other components may not be able to withstand the excessive load.

[0005] To solve the above problems, we plan to use a transmission device to connect multiple solid-state elastic card heat regenerators in parallel, and use a set of power devices to drive multiple solid-state elastic card heat regenerators to operate. Since the solid-state elastic card heat regenerator has a self-rebound function after loading, we plan to design a multi-cylinder refrigeration and heating device capable of work recovery. Utility model content

[0006] The utility model is aimed at providing a multi-cylinder refrigeration and heating device capable of work recovery, which has the characteristic of being able to recover rebound work.

[0007] To achieve the above object, the utility model provides technical scheme is: provide a kind of work recovery multi-cylinder refrigeration heating device, including power mechanism, multiple linkage transmission mechanism and multiple solid-state elastic card regenerators, power mechanism is used to output power;Multiple linkage transmission mechanism has power input end and multiple power output ends, and power input end is connected with power mechanism;Multiple solid-state elastic card regenerators are connected with different power output ends on multiple linkage transmission mechanism respectively, to be driven under the refrigeration or heating of power output end;Wherein,multiple linkage transmission mechanism includes mounting bracket, eccentric wheel rod and multiple drive rods, and mounting bracket is fixedly arranged opposite solid-state elastic card regenerator;Eccentric wheel rod is rotationally arranged on mounting bracket, and is connected with power mechanism, and multiple eccentric wheels are arranged on eccentric wheel rod with interval, and multiple eccentric wheels are arranged according to non-zero phase angle;Multiple drive rods are slidably arranged on mounting bracket, and are respectively arranged corresponding to multiple eccentric wheels, and one end of each drive rod is in contact with corresponding eccentric wheel, and the other end is connected with one of solid-state elastic card regenerator, to be driven under eccentric wheel, and power is input to solid-state elastic card regenerator;Wherein, the part that eccentric wheel rod is connected with power mechanism is power input end, and the part that drive rod is connected with solid-state elastic card regenerator is power output end.

[0008] In combination with the above technical scheme, in a possible implementation manner, the work recovery multi-cylinder refrigeration heating device further includes a heat-conducting medium collecting mechanism, which is connected with the multiple solid-state elastic card regenerators respectively to supply the heat-conducting medium to the multiple solid-state elastic card regenerators respectively and to collect and exchange heat of the heat-conducting medium exported after refrigeration or heating by the solid-state elastic card regenerators.

[0009] In combination with the above technical scheme, in a possible implementation manner, the eccentric wheel is a cylindrical structure integrally formed on the eccentric wheel rod; the eccentric wheel is provided with reinforcing bodies at both ends; the mounting bracket and the eccentric wheel rod are rotationally matched through bearings, and bearings are arranged between two adjacent eccentric wheels.

[0010] In combination with the above technical scheme, in a possible implementation manner, the eccentric wheel rod has a phase angle of 360 / n between adjacent eccentric wheels, where n is the number of eccentric wheels; the end of the drive rod towards the eccentric wheel is provided with a wear-resistant block.

[0011] In combination with the above technical solution, in a possible implementation manner, the solid-state elastic card regenerator comprises a fixed sleeve, a plurality of solid-state elastic card material plates, a pressure head, a plug structure and a medium conveying pipeline assembly, the fixed sleeve is internally provided with a sleeve cavity, the plurality of solid-state elastic card material plates are stacked in the sleeve cavity of the fixed sleeve, and each solid-state elastic card material plate comprises a plurality of perforations, the plurality of perforations are stacked to form a flow cavity for the heat-conducting medium to pass through; the pressure head is slidingly arranged at one end of the fixed sleeve and is connected with a driving rod, so as to load or unload the plurality of solid-state elastic card material plates under the driving of the driving rod, so that the plurality of solid-state elastic card material plates are deformed to generate heat or refrigeration; the plug structure is plugged at the other end of the fixed sleeve and abuts against the solid-state elastic card material plate, so as to limit the axial movement of the solid-state elastic card material plate; and the medium conveying pipeline assembly is communicated with the flow cavity to input and output the heat-conducting medium.

[0012] In combination with the above technical solution, in a possible implementation manner, the pressure head comprises a moving pressure head, a moving pressure head sealing element, a liquid guide pressure head and a driving pressure head, the moving pressure head is slidingly arranged in the sleeve cavity and abuts against the solid-state elastic card material plate, the moving pressure head is provided with a first flow hole communicated with the flow cavity; the moving pressure head sealing element is arranged between the moving pressure head and the inner wall of the sleeve cavity to seal; the liquid guide pressure head is connected with the end of the moving pressure head away from the solid-state elastic card material plate and is provided with a second flow hole and a plurality of liquid distribution holes, the second flow hole is communicated with the first flow hole, and the plurality of liquid distribution holes are communicated at one end with the second flow hole and at the other end with the medium conveying pipeline assembly; and the driving pressure head is connected with the liquid guide pressure head and the driving rod to transmit power.

[0013] In combination with the above technical solution, in a possible implementation manner, the moving pressure head is of a T-shaped cross-section structure; the first flow hole comprises a plurality of micro-holes, and the second flow hole comprises a micro-hole section and a collection section, the micro-hole section is communicated with the micro-holes.

[0014] In combination with the above technical solution, in a possible implementation manner, the solid-state elastic card regenerator is further provided with a sleeve, the sleeve is sleeved outside the fixed sleeve and is in interference fit with the fixed sleeve, and the driving pressure head is slidingly arranged in the sleeve; the fixed sleeve comprises a first half sleeve, a second half sleeve and a fixed sleeve longitudinal sealing element, the first half sleeve is internally provided with a first half groove; the second half sleeve is internally provided with a second half groove and is buckled with the first half sleeve through a positioning structure, so that the first half groove and the second half groove form the sleeve cavity for accommodating the plurality of solid-state elastic card material plates; and the fixed sleeve longitudinal sealing element is arranged between the first half sleeve and the second half sleeve to seal the joint between the first half sleeve and the second half sleeve.

[0015] In combination with the above technical solution, in a possible implementation manner, the sleeve is internally provided with a sliding rail, the driving pressure head is slidingly matched with the sleeve through the sliding rail; and a limiting structure is arranged between the solid-state elastic card material plate and the fixed sleeve to limit the rotation between the solid-state elastic card material plate and the fixed sleeve.

[0016] With the above technical solution, in a possible implementation manner, the power recovery multi-cylinder refrigeration and heating device further comprises a shell, the shell is arranged outside the multi-link transmission mechanism; the power mechanism is arranged on the shell, and one end of the eccentric rod passes through the shell; the multi-link transmission mechanism further comprises a compensation transmission assembly arranged between the power mechanism and the eccentric rod to perform compensation transmission.

[0017] The power recovery multi-cylinder refrigeration and heating device has the advantages that: compared with the prior art, the power recovery multi-cylinder refrigeration and heating device can utilize one set of power mechanism to drive multiple solid-state elastic card heat regenerators suitable for elastic card materials to perform refrigeration or heating, and then the multiple solid-state elastic card heat regenerators can be collected to obtain sufficient heating capacity or refrigeration capacity, thereby meeting the requirements in actual application; moreover, the multiple eccentric wheels on the eccentric rod are arranged at non-zero phase angles, so that the multiple solid-state elastic card heat regenerators are in different loading processes, and the elastic force of the solid-state elastic card heat regenerators after loading is transmitted reversely to the corresponding eccentric wheels through the corresponding driving rods, and then transmitted to other eccentric wheels through the eccentric rod, for loading of the corresponding solid-state elastic card heat regenerators; in this way, the elastic force of the solid-state elastic card heat regenerators is used for loading of other solid-state elastic card heat regenerators again, which is beneficial to power recovery, thereby being beneficial to stable output of power by the power mechanism and reducing energy loss. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 The structure schematic diagram of the power recovery multi-cylinder refrigeration and heating device provided by one embodiment of the present application is shown in the figure.

[0020] Figure 2 The partial structure schematic diagram of the power recovery multi-cylinder refrigeration and heating device provided by one embodiment of the present application is shown in the figure.

[0021] Figure 3 The internal structure schematic diagram of the power recovery multi-cylinder refrigeration and heating device provided by one embodiment of the present application is shown in the figure.

[0022] Figure 4 The structure schematic diagram of the multi-link transmission mechanism part of the power recovery multi-cylinder refrigeration and heating device provided by one embodiment of the present application is shown in the figure.

[0023] Figure 5The partial structure schematic view of the eccentric rod of the work recovery multi-cylinder refrigeration and heating device is provided for an embodiment of the utility model.

[0024] Figure 6 The partial structure schematic view of the solid elastic snap regenerator of the work recovery multi-cylinder refrigeration and heating device is provided for an embodiment of the utility model.

[0025] Figure 7 The structure schematic view of the dynamic pressure head of the work recovery multi-cylinder refrigeration and heating device is provided for an embodiment of the utility model.

[0026] Figure 8 The sectional structure schematic view of the solid elastic snap regenerator and the shell part of the work recovery multi-cylinder refrigeration and heating device is provided for an embodiment of the utility model.

[0027] Figure 9 The cooperation structure schematic view of the pressure head and the driving rod part of the work recovery multi-cylinder refrigeration and heating device is provided for an embodiment of the utility model.

[0028] Figure 10 The structure schematic view of the dynamic pressure head part of the work recovery multi-cylinder refrigeration and heating device is provided for an embodiment of the utility model.

[0029] In the drawings, various reference signs are as follows:

[0030] 10, solid elastic snap regenerator;

[0031] 11, fixed sleeve; 111, first half cylinder; 112, second half cylinder; 113, protrusion;

[0032] 12, solid elastic snap material plate; 121, perforation;

[0033] 13, pressure head; 131, dynamic pressure head; 132, liquid guide pressure head; 133, driving pressure head; 134, bearing groove; 135, blind hole; 14, plug structure;

[0034] 20, multi-connection transmission mechanism;

[0035] 21, eccentric rod; 211, eccentric wheel; 212, reinforcing body;

[0036] 23, driving rod; 231, wear-resistant block; 232, top pressure head; 233, wear-resistant sleeve; 234, pressure sensor; 24, bearing;

[0037] 30, power mechanism;

[0038] 40, shell; 41, first shell body; 42, limiting end plate; 43, bottom sealing plate; 44, sleeve; 45, second shell body. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the described embodiments are only some of the embodiments of the application, rather than all the embodiments. The specific embodiments described herein are only used to explain the utility model and do not limit the utility model. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the application.

[0040] It should be further pointed out that the drawings and embodiments of the utility model mainly describe and explain the concept of the utility model. On the basis of the concept, the specific forms and settings of some connection relationships, position relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be completely described, but those skilled in the art can realize the above-mentioned specific forms and settings in a well-known manner on the premise of understanding the concept of the utility model.

[0041] When an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0042] The terms "in, out" refer to the inside and outside relative to the contour of each component. The terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "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 used to facilitate the description of the utility model and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0043] The terms "first", "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more, and the meaning of "several" is one or more, unless otherwise specifically limited.

[0044] The power recovery multi-cylinder refrigeration and heating device provided by the utility model will be described.

[0045] As Figure 1 and Figure 2As shown, the utility recovery multi-cylinder refrigeration and heating device provided by the first embodiment of the utility model, including power mechanism 30, multi-link transmission mechanism 20 and multiple solid-state elastic card regenerators 10, power mechanism 30 is used to output power;Multi-link transmission mechanism 20 has power input end and multiple power output ends, and the power input end is connected with power mechanism 30;Multiple solid-state elastic card regenerators 10 are connected with different power output ends on multi-link transmission mechanism 20 respectively to refrigerate or heat under the driving of power output end;Wherein, multi-link transmission mechanism 20 includes mounting bracket, eccentric wheel rod 21 and multiple drive rods 23, and the mounting bracket is fixedly arranged opposite to solid-state elastic card regenerator 10;Eccentric wheel rod 21 is rotationally arranged on the mounting bracket and is connected with power mechanism 30, multiple eccentric wheels 211 are arranged on eccentric wheel rod 21 at intervals, and the multiple eccentric wheels 211 are arranged at non-zero phase angle;Multiple drive rods 23 are slidingly arranged on the mounting bracket and are arranged corresponding to multiple eccentric wheels 211 respectively, one end of each drive rod 23 is in contact with the corresponding eccentric wheel 211, and the other end is connected with one of solid-state elastic card regenerators 10 to input power to solid-state elastic card regenerator 10 under the driving of eccentric wheel 211;Wherein, the part of eccentric wheel rod 21 connected with power mechanism 30 is power input end, and the part of drive rod 23 connected with solid-state elastic card regenerator 10 is power output end.

[0046] Specifically, power mechanism 30 can be a motor, a hydraulic power element, a pneumatic power element, etc.

[0047] Compared with the prior art, the utility recovery multi-cylinder refrigeration and heating device provided by the embodiment can drive multiple solid-state elastic card regenerators 10 suitable for elastic card material operation to refrigerate or heat by using a set of power mechanism 30 through multi-link transmission mechanism 20, and then multiple solid-state elastic card regenerators 10 can be gathered to obtain sufficient heating capacity or refrigeration capacity to meet the demand in actual application;Moreover, the multiple eccentric wheels 211 on eccentric wheel rod 21 are arranged at non-zero phase angle, which can make multiple solid-state elastic card regenerators 10 be in different loading processes, and the rebound force of solid-state elastic card regenerator 10 after loading can be reversely transmitted to the corresponding eccentric wheel 211 through the corresponding drive rod 23, and then transmitted to other eccentric wheels 211 through eccentric wheel rod 21 for loading of the corresponding solid-state elastic card regenerator 10;In this way, the rebound work of solid-state elastic card regenerator 10 can be used for loading of other solid-state elastic card regenerators 10 again, which is beneficial to work recovery, so as to be beneficial to stable power output of power mechanism 30 and reduce energy loss.

[0048] As Figures 1 to 5 shown, the utility model provides a kind of specific implementation mode based on the first embodiment as follows:

[0049] In order to facilitate the derivation of refrigerating capacity or heating capacity, the work recovery multi-cylinder refrigeration and heating device further comprises a heat conducting medium collecting mechanism, which is connected with the plurality of solid-state elastic snap regenerators 10 respectively to supply the heat conducting medium into the plurality of solid-state elastic snap regenerators 10 respectively and collect the derived heat conducting medium after the refrigeration or heating by the solid-state elastic snap regenerators 10 and then exchange heat.

[0050] The heat conducting medium collecting mechanism can be a pipeline system composed of pipelines, busbars, distributors, pumping assemblies, heat conducting medium storage assemblies and the like. The heat conducting medium collecting mechanism is connected with devices requiring heat or cold such as heat exchangers to form a cycle to realize the transmission and circulation of heat.

[0051] The eccentric rod 21 can be connected with one power mechanism 30 at one end or connected with one power mechanism 30 at both ends, that is, one power mechanism 30 can be used to input power according to the needs of use, or two power mechanisms 30 can be used to input power, and the two power mechanisms 30 can be of the same power or type or different power or type.

[0052] As shown in Figure 5 The eccentric 211 is a cylindrical structure integrally formed on the eccentric rod 21. The eccentric 211 is provided with a reinforcing body 212 at both ends to avoid fracture at both ends of the eccentric 211 due to stress concentration. In one specific embodiment, the reinforcing body 212 is a crescent structure integrally formed on the eccentric rod 21. The eccentricity of the eccentric 211 is consistent with the length of the pressure head compression in the corresponding solid-state elastic snap regenerator 10.

[0053] In order to ensure the stability of the eccentric rod 21 while reducing the friction loss, the rotating fit is formed between the mounting bracket and the eccentric rod 21 through the bearing 24, and the bearing 24 is arranged between two adjacent eccentrics 211 to increase the stress of the eccentric rod 21. The bearing 24 can be a ball bearing, a spherical bearing, an air bearing or other bearing members capable of bearing.

[0054] The phase angle between the adjacent eccentrics 211 on the eccentric rod 21 is 360 / n, where n is the number of the eccentrics 211. In this way, the torque is approximately the same when the eccentric rod 21 rotates, so that the different solid-state elastic snap regenerators 10 are rotated in turn, which can ensure the stability of the structure and power output, reduce the swing of the eccentric rod 21, reduce mechanical wear and noise, reduce friction loss and improve energy utilization.

[0055] The end of the driving rod 23 towards the eccentric 211 is provided with a wear-resistant block 231 to reduce wear.

[0056] As shown in Figure 8As shown, in some embodiments, the solid elastic snap regenerator 10 comprises a fixed sleeve 11, a plurality of solid elastic snap material plates 12, a pressure head 13, a plug structure 14 and a medium conveying pipe assembly. The fixed sleeve 11 is provided with a sleeve cavity, the plurality of solid elastic snap material plates 12 are stacked in the sleeve cavity of the fixed sleeve 11, and each solid elastic snap material plate 12 comprises a plurality of perforations. The plurality of perforations are stacked to form a flow cavity for the heat-conducting medium to pass through. The pressure head 13 is slidingly arranged at one end of the fixed sleeve 11 and is connected with a driving rod 23, so as to load or unload the plurality of solid elastic snap material plates 12 under the driving of the driving rod 23, so that the plurality of solid elastic snap material plates 12 are deformed to generate heat or cold. The plug structure 14 is plugged at the other end of the fixed sleeve 11 and abuts against the solid elastic snap material plates 12, so as to limit the axial movement of the solid elastic snap material plates 12. The medium conveying pipe assembly is in communication with the flow cavity for the heat-conducting medium to input and output.

[0057] It should be noted that the shape of the pressure head 13 is the same as the cross-sectional shape of the solid elastic snap material plate. In this way, when the pressure head applies stress to the solid elastic snap material plate, the force acting on the protrusions can be avoided, and the energy consumption ratio of the refrigeration and heating device is increased. In order to increase the loading strength, the pressure head can be made of high-strength ceramic or tungsten steel.

[0058] The shape and number of the perforations can be selected as required. Preferably, the perforations are polygonal, radial, circular or square.

[0059] In one embodiment, the solid elastic snap material plate 12 is plate-shaped. Since each plate is independently stressed, even if some solid elastic snap material cracks during loading and unloading, only the solid elastic snap material plate 12 where the crack occurs fails, and the crack does not spread to other solid elastic snap material plates, i.e., it does not cause the entire solid elastic snap material to fail and affect the overall operation, thereby improving the service life of the solid elastic snap material. In addition, the plate-shaped solid elastic snap material plate 12 greatly reduces the damage of the loading force to the material during the loading process after stacking, and avoids buckling deformation of the material.

[0060] In one embodiment, the thickness of the solid elastic snap material plate is 0.01-100 mm, preferably 0.1-10 mm, and more preferably 0.44-0.3 mm.

[0061] In actual application, in order to avoid misalignment of the solid elastic snap material plates 12 after stacking or misalignment of the perforations to form a smooth flow cavity during use, a limiting structure can be provided between the solid elastic snap material plate 12 and the fixed sleeve 11 to limit the rotation between the solid elastic snap material plate 12 and the fixed sleeve 11.

[0062] The limiting structure can be a limiting structure formed by the shapes of the solid elastic clamping material plate 12 and the fixed sleeve 11, or an interference fit between the solid elastic clamping material plate 12 and the fixed sleeve 11, or a limiting piece provided separately in the fixed sleeve 11.

[0063] In an embodiment, the inner wall of the fixed sleeve 11 is clamped with the solid elastic clamping material plate, that is, the shape of the inner wall of the fixed sleeve 11 is the same as that of the solid elastic clamping material plate and there is a gap or the solid elastic clamping material plate internally fits the inner wall of the fixed sleeve 11. For example, the shape of the inner wall of the fixed sleeve 11 and the shape of the solid elastic clamping material plate can both be irregular polygons, polygons, squares, etc. containing angles, which can be clamped with each other and are not easy to rotate. In the embodiment of the present application, the shape of the inner wall of the fixed sleeve 11 and the shape of the solid elastic clamping material plate are preferably hexagonal. In some embodiments, the solid elastic clamping material plate can also internally fit the inner wall of the fixed sleeve 11. Preferably, the inner wall of the fixed sleeve 11 is circular or has a circular arc shape, and the solid elastic clamping material plate is square or polygonal to facilitate internal fitting. For example, the inner wall of the fixed sleeve 11 is circular, and the solid elastic clamping material plate is square, with a circle internally fitted in the square; the inner wall of the fixed sleeve 11 is a rectangle with right angles in a circular arc shape, and the solid elastic clamping material plate is a rectangle or a hexagon.

[0064] In order to fix the position of the stacked solid elastic clamping material plates, the fixed sleeve 11 can also be provided with a limiting piece to limit the movement of the solid elastic clamping material plates. For example, a protrusion is provided along the radial direction of the inner wall of the fixed sleeve 11, and a recess is provided on the edge of the solid elastic clamping material plate, so that the protrusion of the fixed sleeve 11 extends into the recess of the stacked solid elastic clamping material plates to limit the position. In another embodiment, the stacked solid elastic clamping material plates are fixed by a limiting piece, and then fixed with the fixed sleeve 11. For example, a rod-shaped limiting piece is inserted into the flow cavity of the stacked solid elastic clamping material plates, and the rod-shaped limiting piece is fixed with the fixed sleeve 11 by a fixing device.

[0065] As shown in FIG. 1, Figure 6 In a specific embodiment, each solid elastic clamping material plate 12 contains a groove, and a plurality of grooves stacked form a space for accommodating the protrusion 113 of the inner wall of the fixed sleeve 11. After the protrusion 113 extends into the space formed by the stacked grooves, the gap between the inner wall of the fixed sleeve 11 and the outer surface of the stacked solid elastic clamping material plates 12 forms an additional flow cavity for the flow of heat-conducting fluid.

[0066] In actual application, the greater the mass or volume of the solid elastic clamping material, the more heat or cold it generates. Therefore, in order to maximize the absorption of the heat or cold generated by the solid elastic clamping material by the medium, the amount of the solid elastic clamping material needs to be matched with the heat transfer capacity in the present embodiment. Generally, a larger flow cavity size can ensure that the same mass of solid elastic clamping material has a larger specific surface area or volume.

[0067] The grooves of each solid elastic clamping material plate and the protrusions 113 of the inner wall of the fixing sleeve 11 are multiple and one-to-one corresponding, the protrusions 113 of the inner wall of the fixing sleeve 11 are the same in number as the groove spaces formed after the stacking of the solid elastic clamping material plates 12, and the protrusions 113 are respectively embedded in the groove spaces of the solid elastic clamping material plates 12. In the embodiment, the protrusions 12 extend along the longitudinal direction of the fixing sleeve 11, and the length thereof is greater than or equal to the length of the stacked solid elastic clamping material plates 12, so that the position of the solid elastic clamping material plates 12 can be fixed to a certain extent, and the dislocation thereof is limited. In order to increase the cross-sectional area of the flow cavity, a plurality of protrusions 113 and grooves can be arranged at different angles. In order to further increase the flow cavity, a serrated structure can be arranged at the edge of the groove of the solid elastic clamping material plate 12, so as to form a small micro-flow cavity and increase the contact area between the heat-conducting fluid and the solid elastic clamping material, and increase the heat conduction efficiency.

[0068] The grooves and the protrusions can be rectangular, arc-shaped or irregular, which are not limited here. Preferably, the grooves and the protrusions can be designed as rectangular, so that the flow cavity formed has an elongated structure, which has a larger contact surface with the solid elastic clamping material on one hand, and the heat-conducting fluid has a faster flow rate and higher heat transfer efficiency due to the blockage of the protrusions on the other hand.

[0069] The gap between the inner wall of the fixing sleeve 11 and the edge of the groove of the solid elastic clamping material plate 12 is 0.1-5mm, preferably 0.5-1mm, which can ensure that the flow resistance is minimum and the flow rate is maximum.

[0070] In actual application, if there is a gap between the inner wall of the fixing sleeve 11 and the solid elastic clamping material plate, the solid elastic clamping material plate may be slightly dislocated, which causes the perforations on the surface thereof not to be easily aligned, and affects the flow rate of the heat-conducting fluid in the flow cavity. In order to solve this problem, the utility model provides an embodiment that the outer surface of the protrusion is in contact with the inner surface of the stacked groove, that is, only the protrusion and the groove are clamped without leaving a gap, so that the inner wall of the fixing sleeve 11 and the outer edge of the solid elastic clamping material plate leave a gap, thereby limiting the dislocation of the solid elastic clamping material plate.

[0071] It should be noted that the solid elastic clamping material plate will expand in the transverse direction during loading, and therefore, in order to ensure that the solid elastic clamping material plate has sufficient space when expanding, a gap is left between the solid elastic clamping material plate and the inner wall of the fixing sleeve 11. In some applications, a partition is arranged on the inner wall of the fixing sleeve 11, for example, a partition film is coated or attached on the inner wall of the fixing sleeve 11, which can be Teflon, POM, nylon, polyester or silica gel. On the one hand, the film is soft and can accommodate and buffer the solid elastic clamping material plate when it expands, and on the other hand, the film has a heat insulation effect, which can minimize heat loss when the medium exchanges heat through the flow cavity. In addition, when the inner wall of the fixing sleeve 11 is clamped with the solid elastic clamping material plate, the partition can also well clamp the solid elastic clamping material plate. In actual application, Teflon is preferably used, and in order to facilitate assembly, Teflon paint is brushed on the inner wall of the fixing sleeve 11, and then the solid elastic clamping material plate is placed in the lumen of the fixing sleeve 11, which is convenient to operate. The thickness of the solid elastic clamping material plate is 0.01-100mm, preferably 0.1-10mm, and more preferably 0.44-0.3mm.

[0072] In the embodiment of the utility model, a plurality of perforations are arranged on the solid elastic clamping material plate, and the perforations are aligned to form a flow cavity after the solid elastic clamping material plates are stacked. In the embodiment in which the inner wall of the fixing sleeve 11 is connected in the solid elastic clamping material plate, the edge of the solid elastic clamping material plate and the inner wall of the fixing sleeve 11 form a second flow cavity. In the embodiment, the shape and number of the perforations are not limited. Preferably, the perforations are polygons, radial, circular or square. As shown in the figure, the solid elastic clamping unit further comprises a plug body, which is inserted into the flow cavity formed by the perforations, so that the plug body is connected with the inner wall of the perforations to form a plurality of micro-flow cavities. Figure 3

[0073] In actual application, in order to increase the heat transfer efficiency of the medium, the perforations are designed as polygons, radial, circular or square in the embodiment, and the plug body is inserted therein, so that the plug body and the inner wall of the perforations form a micro-flow cavity. On the one hand, it can greatly improve the flow rate of the medium, reduce the flow resistance and increase the heat transfer efficiency. On the other hand, the larger the volume (mass or volume) of the solid elastic clamping material, the more heat or cold it generates. Therefore, in order to maximize the heat or cold generated by the solid elastic clamping material to be absorbed by the medium, the amount of the solid elastic clamping material needs to be matched with the heat transfer capacity in the embodiment. Usually, a larger perforation size can ensure that the solid elastic clamping material of the same mass has a larger specific surface area or volume. The design of large-size perforations with plug bodies in the embodiment can reduce the flow resistance and improve the flow rate, so that the medium can maximize the absorption of the heat generated by the solid elastic clamping material and improve the heat transfer efficiency. In an optional embodiment, the plug body can be used as a limiting piece to fix the position of the solid elastic clamping material plate and limit its movement and dislocation. ​

[0074] As shown in Figure 6 The fixed sleeve 11 includes a first half sleeve 111, a second half sleeve 112, and a longitudinal sealing member of the fixed sleeve. The first half sleeve 111 is internally provided with a first half groove; the second half sleeve 112 is internally provided with a second half groove and is buckled with the first half sleeve 111 through a positioning structure, so that the first half groove and the second half groove form the above-mentioned sleeve cavity for accommodating a plurality of solid-state elastic card material plates 12; and the longitudinal sealing member of the fixed sleeve is arranged between the first half sleeve 111 and the second half sleeve 112, for sealing the joint between the first half sleeve 111 and the second half sleeve 112.

[0075] In this form, the installation and replacement of the solid-state elastic card material plate 12 can be facilitated, while the overall strength of the structure can be ensured, and the specific heat capacity of the fixed sleeve 11 can be selected according to its material, so as to keep warm.

[0076] It should be noted that the fixed sleeve 11 is preferably made of a high polymer material, which can be nylon, polyester, hard silica gel, resin, etc., and is preferably made of polytetrafluoroethylene. During the loading of stress by the driving mechanism 3, the solid-state refrigeration and heating plate 12 will expand laterally, and the use of a high polymer material can accommodate the expanded size, thereby buffering the lateral pressure. On the other hand, the high polymer material has weak thermal conductivity, which can also prevent the heat of the heat-conducting fluid from being lost.

[0077] In a specific embodiment, the positioning structure between the first half sleeve 111 and the second half sleeve 112 can be a structure of protrusions and grooves matched with each other, or a hole or groove structure positioned by fasteners or positioning pins, etc., so as to facilitate the positioning and alignment of the first half sleeve 111 and the second half sleeve 112.

[0078] The sleeve cavity can be a cylindrical, square, rectangular, etc. shaped cavity, and its inner wall is in close contact with the solid-state refrigeration and heating plate 12, so that during assembly, the solid-state refrigeration and heating plate 12 can be placed into the fixed sleeve 11. The specific fixing method of the fixed sleeve 11 to the solid-state refrigeration and heating plate 12 can be selected as needed.

[0079] Specifically, as shown in Figure 3As shown, in one embodiment, the pressure head 13 comprises a moving pressure head 131, a moving pressure head seal, a liquid guide pressure head 132 and a driving pressure head 133. The moving pressure head 131 is slidingly arranged in the barrel cavity and abuts against the solid elastic latch material plate 12. The moving pressure head 131 is provided with a first flow hole communicating with the flow cavity. The moving pressure head seal is arranged between the moving pressure head 131 and the inner wall of the barrel cavity for sealing. The liquid guide pressure head 132 is connected to the end of the moving pressure head 131 away from the solid elastic latch material plate 12 and is provided with a second flow hole and a plurality of liquid distribution holes. The second flow hole communicates with the first flow hole. The plurality of liquid distribution holes are in communication at one end with the second flow hole and at the other end with the medium conveying pipeline assembly. The driving pressure head 133 is slidingly arranged in the sleeve 44 and is connected with the liquid guide pressure head 132 and the driving rod 23 to transmit power.

[0080] Preferably, the cross-sectional shape of the end of the moving pressure head 131 in contact with the solid refrigeration and heating plate 12 is the same as that of the first flow hole located at the center of the moving pressure head 131 and coaxial with the cavity. In this embodiment, the cross-sectional shape of the end of the moving pressure head 131 in contact with the solid refrigeration and heating plate 12 is the same as that of the solid refrigeration and heating plate and completely covers the cross section of the solid refrigeration and heating plate, which can ensure that the solid refrigeration and heating plate completely changes phase when the stress is applied, thereby improving the efficiency of refrigeration and heating. In addition, the first flow hole is arranged at the center of the moving pressure head 131, which can ensure that the heat-conducting fluid in each angle is uniform and flows out of the first flow hole at the same flow rate.

[0081] In order to increase the strength of the load, the moving pressure head 131 can be made of high-strength tungsten steel.

[0082] The moving pressure head 131 has a T-shaped cross-sectional structure. The first flow hole comprises a plurality of micro-holes. The second flow hole comprises a micro-hole section and a collection section. The micro-hole section communicates with the micro-holes to facilitate the flow of the heat-conducting medium. The plug structure 14 is provided with a third flow hole. The bottom sealing plate 43 is provided with a fourth flow hole. The third flow hole also comprises a micro-hole section and a collection section. The micro-hole section communicates with the flow cavity, and the collection section communicates with the fourth flow hole. In this way, the heat-conducting medium can be easily guided out of the solid elastic latch heat regenerator 10 from both ends, thereby improving the circulation efficiency of the heat-conducting medium.

[0083] As Figure 1 , Figure 2 and Figure 8As shown, the work recovery multi-cylinder refrigeration and heating device further comprises a shell 40, which is arranged outside the solid elastic snap regenerator 10. The shell 40 comprises a first shell body 41, a limiting end plate 42 and a bottom sealing plate 43. The first shell body 41 is internally provided with a plurality of tube cavities for accommodating the solid elastic snap regenerator 10. The limiting end plate 42 is arranged at one end of the first shell body 41 facing the multi-link transmission mechanism 20, and is used for limiting the solid elastic snap regenerator 10. The limiting end plate 42 is provided with a through hole corresponding to the position of the tube cavity, through which the power output end of the multi-link transmission mechanism 20 passes. The bottom sealing plate 43 is arranged at the other end of the first shell body 41 away from the multi-link transmission mechanism 20, and is detachably connected with the first shell body 41, and is connected with the end of the solid elastic snap regenerator 10.

[0084] When assembling, the multi-link transmission mechanism 20 can be connected with one end of the first shell body 41, and the solid elastic snap regenerator 10 can be loaded into the corresponding tube cavity from the other end of the first shell body 41. The limiting end plate 42 and the bottom sealing plate 43 are used to fix the solid elastic snap regenerator 10 firmly, so that the plurality of multi-link transmission mechanisms 20 become a whole, and the installation process is simple and convenient. The multi-link transmission mechanism 20 can stably load and unload the solid elastic snap regenerator 10, and the stability of the equipment operation is ensured.

[0085] As shown in Figure 1 The shell 40 further comprises a second shell body 45, which is connected with the first shell body 41. The multi-link transmission mechanism 20 is arranged in the second shell body 45. The power mechanism 30 is arranged on the shell 40, and one end of the eccentric rod 21 penetrates through the shell 40.

[0086] The multi-link transmission mechanism 20 further comprises a compensation transmission assembly arranged between the power mechanism 30 and the eccentric rod 21 for compensation transmission. The compensation transmission assembly can be a gear transmission assembly or a chain transmission assembly, etc., which can compensate the distance.

[0087] As shown in Figure 8 In some embodiments, the shell 40 further comprises a sleeve 44 fixedly arranged in the first shell body 41 to form the tube cavity. The sleeve 44 can be in interference fit with the fixed sleeve 11 to constrain the fixed sleeve 11.

[0088] Further, in order to reduce friction and improve the movement accuracy of the driving pressure head 133, a slide rail is arranged in the sleeve 44. The driving pressure head 133 is in sliding fit with the sleeve 44 through the slide rail, so that the driving pressure head 133 slides along the slide rail when loading or unloading.

[0089] In some embodiments, the slide rail in the inner wall of the sleeve 44 which contacts the fixed sleeve 11 can be provided with a clamping piece for fixing the fixed sleeve 11. Alternatively, the slide rail can not be arranged in the part of the inner wall of the sleeve 44 which overlaps with the fixed sleeve 11, and only a guide rail is arranged at the port of the sleeve 44.

[0090] In practical applications, the assembled fixing sleeve 11 and the pressure head 13 are placed in the sleeve 44, which not only fixes the various mechanisms, but also facilitates the replacement of parts.

[0091] As shown in Figures 2 to 5 , the multi-link transmission mechanism 20 includes a mounting bracket, an eccentric rod 21, and a plurality of drive rods 23. The mounting bracket is fixedly arranged opposite to the solid elastic snap regenerator 10. The eccentric rod 21 is rotatably arranged on the mounting bracket and connected with the power mechanism 30. A plurality of eccentric wheels 211 are arranged on the eccentric rod 21 at intervals. The plurality of drive rods 23 are slidably arranged on the mounting bracket and correspondingly arranged with the plurality of eccentric wheels 211. Each drive rod 23 has one end in contact with the corresponding eccentric wheel 211 and the other end connected with one of the solid elastic snap regenerators 10, so as to input power to the solid elastic snap regenerator 10 under the driving of the eccentric wheel 211.

[0092] Through this structure, the rotary power of the eccentric rod 21 can be converted into the pulling and pressing power on the drive rod, so as to input power to the solid elastic snap regenerator 10, compress the elastic snap material in the solid elastic snap regenerator 10 to cause phase change and heat release, and unload the phase change to recover heat absorption.

[0093] The end of the drive rod 23 towards the eccentric wheel 211 is provided with a wear-resistant block 231 to reduce wear.

[0094] The drive rod 25 and the pressure head 13 can be connected by a pin shaft. However, the pin shaft connection will be more prone to breakage under the action of large bearing capacity and long-term wear. Therefore, in some embodiments, as shown in Figures 6 to 8 , one end of the drive rod 25 is provided with a top pressure head 232, and the pressure head 13 is provided with a bearing groove 134. The top pressure head 232 can be placed at the bottom of the bearing groove 134 to transmit the top pressure power to the pressure head 13 through the drive rod 25.

[0095] Through the cooperation between the top pressure head 232 of the drive rod 25 and the bearing groove 134 on the pressure head 13, the top pressure power on the drive rod 25 can be effectively transmitted to the pressure head 13, and then the solid elastic snap regenerator 10 is loaded by the pressure head 13. Since this structure does not have components such as pin shafts, it will not break and fail under the working conditions of large bearing capacity and long-term wear, so it can realize stable transmission of power. At the same time, since the solid elastic snap regenerator 10 will have a rebound force when unloading, the pressure head 13 and the drive rod 25 can be reset under the action of the rebound force, so this form will not affect the continuous operation of the equipment.

[0096] The gap between the top pressure head 232 and the opening of the bearing groove 134 has a swing margin to allow the drive rod 25 to swing during the top pressure power transmission, thereby avoiding wear and splitting of the bearing groove 134.

[0097] The top pressure head 232 has an arc-shaped convex structure, and the bottom of the bearing groove 134 has an arc-shaped concave structure that cooperates with the top pressure head 232, thereby improving the transmission effect of the top pressure force.

[0098] like Figure 7 As shown, a blind hole 135 is provided at the bottom of the support groove 134. The blind hole 135 is provided to accommodate foreign objects such as iron filings and sand particles that are generated during operation or accidentally enter the support groove 134, thus preventing these foreign objects from affecting power transmission. On the other hand, since the gas or liquid in the blind hole 135 is discharged during the pressing process, the blind hole 135 can also act as a negative pressure suction cup, so that a certain degree of adhesion can be generated between the drive rod 25 and the pressure head 13, which is conducive to the coordinated movement between the two.

[0099] Lubricating grease is filled between the pressure head 232 and the bearing groove 134. This not only reduces the mechanical wear of the pressure head 232 and the bearing groove 134, but also reduces the possibility of foreign objects intruding and affecting power transmission. At the same time, it enhances the effect of the negative pressure suction cup, which is beneficial to the coordinated movement between the drive rod 25 and the pressure head 13.

[0100] Multiple blind holes 135 can be spaced out so that the diameter of each blind hole 135 is small enough to avoid affecting the shape of the bottom of the bearing groove 134, thereby ensuring the stability of power transmission.

[0101] like Figure 8 As shown, the top pressure head 232 is provided with a wear-resistant sleeve 233 to reduce the wear of the drive rod 25. A pressure sensor 234 is provided between the top pressure head 232 and the wear-resistant sleeve 233 to detect the pressure between the drive rod 25 and the pressure head 13, thereby determining whether the power transmission is within the required range, and then adjusting the drive rod 25 or the pressure head 13 according to the result.

[0102] Specifically, the power mechanism 30 can be a power component that can output rotational power, such as a geared motor or an internal combustion engine.

[0103] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A power recovery multi-cylinder refrigeration and heating device, characterized in that, The utility model relates to a kind of multi-cylinder refrigeration and heating device, including: Power mechanism (30) for output power; Multi-axle transmission mechanism (20) has power input end and multiple power output ends, the power input end is connected with the power mechanism (30); Multiple solid-state elastic card regenerators (10) are respectively connected on the different power output ends of the multi-axle transmission mechanism (20), to refrigerate or heat under the driving of the power output end; Wherein, the multi-axle transmission mechanism (20) includes: Mounting bracket, which is fixedly arranged opposite to the solid-state elastic card regenerator (10); Eccentric wheel rod (21) is rotatably arranged on the mounting bracket and connected with the power mechanism (30), and multiple eccentric wheels (211) are arranged on the eccentric wheel rod (21) with interval, and multiple eccentric wheels (211) are arranged with non-zero phase angle; Multiple driving rods (23) are slidably arranged on the mounting bracket and are respectively arranged corresponding to multiple eccentric wheels (211), one end of each driving rod (23) is in contact with the corresponding eccentric wheel (211), and the other end is connected with one of the solid-state elastic card regenerators (10), to input power to the solid-state elastic card regenerator (10) under the driving of the eccentric wheel (211); Wherein, the part where the eccentric wheel rod (21) is connected with the power mechanism (30) is the power input end, and the part where the driving rod (23) is connected with the solid-state elastic card regenerator (10) is the power output end.

2. The power recovery multi-cylinder refrigeration and heating device according to claim 1, wherein, The multi-cylinder refrigeration and heating device also includes: Heat-conducting medium collecting mechanism is respectively connected with multiple solid-state elastic card regenerators (10), to supply heat-conducting medium to multiple solid-state elastic card regenerators (10) respectively, and to collect and exchange heat after the heat-conducting medium exported by the solid-state elastic card regenerator (10) after refrigeration or heating.

3. The power recovery multi-cylinder refrigeration and heating apparatus according to claim 1, wherein The eccentric wheel (211) is a cylindrical structure integrally formed on the eccentric wheel rod (21);The eccentric wheel (211) is provided with a reinforcing body (212) at both ends;The mounting bracket and the eccentric wheel rod (21) are rotatably connected through a bearing, and a bearing (24) is arranged between two adjacent eccentric wheels (211).

4. The power recovery multi-cylinder refrigeration and heating device according to claim 1, characterized in that: The phase angle between adjacent eccentric wheels (211) on the eccentric wheel rod (21) is 360 / n, where n is the number of eccentric wheels (211);The end of the driving rod (23) towards the eccentric wheel (211) is provided with a wear-resistant block (231).

5. The power recovery multi-cylinder refrigerating and heating apparatus according to claim 1, wherein The solid-state elastic card regenerator (10) includes: Fixed sleeve (11) is provided with a cylinder cavity in the inside; Multiple solid-state elastic material plates (12) are stacked in the cylinder cavity of the fixed sleeve (11), and each solid-state elastic material plate (12) contains a perforation, and multiple perforations form a flow cavity after stacking to pass through heat-conducting medium; Press head (13) is slidably arranged at one end of the fixed sleeve (11) and connected with the driving rod (23), to load or unload multiple solid-state elastic material plates (12) under the driving of the driving rod (23), so that multiple solid-state elastic material plates (12) are deformed to heat or cool. A plug structure (14) is arranged at the other end of the fixed sleeve (11) and abuts against the solid elastic material plate (12) to limit the axial movement of the solid elastic material plate (12); A medium conveying pipe assembly is in communication with the flow cavity for input and output of the heat-conducting medium.

6. The power recovery multi-cylinder refrigeration and heating apparatus according to claim 5, wherein The pressure head (13) comprises: A dynamic pressure head (131) is slidingly arranged in the barrel cavity and abuts against the solid elastic material plate (12), and the dynamic pressure head (131) is provided with a first flow hole in communication with the flow cavity; A dynamic pressure head sealing member is arranged between the dynamic pressure head (131) and the inner wall of the barrel cavity for sealing; A liquid guide pressure head (132) is connected to the end of the dynamic pressure head (131) away from the solid elastic material plate (12) and is provided with a second flow hole and a plurality of liquid distribution holes, the second flow hole is in communication with the first flow hole, and the plurality of liquid distribution holes are in communication at one end with the second flow hole and at the other end with the medium conveying pipe assembly; A driving pressure head (133) is connected with the liquid guide pressure head (132) and the driving rod (23) to transmit power.

7. The power recovery multi-cylinder refrigeration and heating apparatus according to claim 6, wherein The dynamic pressure head (131) has a T-shaped cross-sectional structure; the first flow hole comprises a plurality of micro-holes, and the second flow hole comprises a micro-hole section and a collection section, and the micro-hole section is in communication with the micro-holes.

8. The power recovery multi-cylinder refrigerating and heating apparatus according to claim 6, wherein The solid elastic regenerative heat exchanger (10) is further provided with: A sleeve (44) is arranged outside the fixed sleeve (11) and is in interference fit with the fixed sleeve (11); the driving pressure head (133) is slidingly arranged in the sleeve (44); The fixed sleeve (11) comprises: A first half barrel (111) is internally provided with a first half groove; A second half barrel (112) is internally provided with a second half groove and is buckled with the first half barrel (111) through a positioning structure, so that the first half groove and the second half groove form the barrel cavity for accommodating a plurality of solid elastic material plates (12); A fixed sleeve longitudinal sealing member is arranged between the first half barrel (111) and the second half barrel (112) to seal the joint between the first half barrel (111) and the second half barrel (112).

9. The power recovery multi-cylinder refrigeration and heating device according to claim 8, characterized in that: The sleeve (44) is internally provided with a sliding rail, and the driving pressure head (133) is in sliding fit with the sleeve (44) through the sliding rail; A limiting structure is arranged between the solid elastic material plate (12) and the fixed sleeve (11) to limit the rotation between the solid elastic material plate (12) and the fixed sleeve (11).

10. The power recovery multi-cylinder refrigeration and heating apparatus according to claim 1, wherein, The power recovery multi-cylinder refrigeration and heating device further comprises: An outer shell (40) is arranged outside the multi-link transmission mechanism (20); The power mechanism (30) is arranged on the outer shell (40), and one end of the eccentric rod (21) penetrates out of the outer shell (40); The multi-link transmission mechanism (20) further comprises: A compensation transmission assembly (27) is arranged between the power mechanism (30) and the eccentric rod (21) for compensation transmission.

Images