Continuous rotating cam plate type driving mechanism elastic heat refrigerating device and refrigerating method

Abstract

The invention relates to a continuously rotating cam plate type driving mechanism elastic heat refrigerating device and method, the device comprises a cam plate formed by curve enveloping, the two sides of the cam plate are provided with even number of elastic heat regenerators, and the elastic heat regenerators are distributed on a frame end plate; the elastic heat regenerator is connected with the cam plate through a roller motion mechanism, and the roller motion mechanism does linear reciprocating motion under the constraint of a linear sliding rail; the power source is connected with the cam plate through the transmission device, the cam plate is driven by the power source and the transmission device to continuously rotate in one direction, and the elastic heat regenerators on the two sides of the cam plate periodically and sequentially conduct the loading process, the first holding process, the unloading process and the second holding process. An elastic heat material is arranged in the elastic heat regenerator, the temperature is increased when the elastic heat regenerator is loaded, and the temperature is reduced when the elastic heat regenerator is unloaded; the elastic heat regenerators are located at different phases, at least two elastic heat regenerators absorb heat from a heat source at any moment, and therefore continuous refrigeration is achieved. Kinetic energy loss in the refrigeration process can be reduced, and the energy utilization rate is increased.

Description

Technical Field

[0001] The present invention belongs to the technical field of environmentally friendly refrigeration, and in particular relates to a continuously rotating cam plate drive mechanism elastic heat refrigeration device and a refrigeration method. Background Art

[0002] Currently, the refrigerants used in vapor compression refrigeration, which dominates the market, are the primary source of carbon emissions in the refrigeration industry. Finding alternative refrigerants with lower greenhouse gas emissions is an effective solution to addressing emissions issues in the refrigeration industry.

[0003] Among the next generation of green refrigeration technologies, solid-state refrigeration has attracted widespread attention within the industry due to its carbon-free, reliable, and easily recyclable characteristics. Among the numerous solid-state refrigeration technologies, elastocaloric refrigeration is considered the most promising alternative to traditional vapor compression refrigeration. This novel refrigeration method achieves cooling effects by using a stress field to induce a solid-state phase transition in elastocaloric materials.

[0004] Existing technologies, such as the Chinese patent application with publication number CN118856655A, propose “an anti-phase, multi-regenerator elastic heat refrigeration chiller and its refrigeration method”, which adopts an anti-phase, multi-regenerator structure, and alternately compresses and unloads two elastic heat regenerators through an electric drive, uses the cooling energy generated by the unloading regenerator to output cold water, and uses the compression regenerator to recover the residual cooling energy in the chilled water, forming a flow network to achieve refrigeration with a large cooling temperature difference and a large cooling capacity. Although this solution solves the problems of non-cooling time period and energy waste, and achieves a controllable cooling effect with a large cooling temperature difference and quantity. However, this driving method of the chiller causes a large amount of kinetic energy loss during startup and braking, and the energy utilization rate needs to be improved. Summary of the Invention

[0005] The purpose of the present invention is to address the problems in the above-mentioned prior art and provide a continuously rotating cam plate drive mechanism elastic heat refrigeration device and refrigeration method to reduce kinetic energy loss during the refrigeration process and effectively improve energy utilization.

[0006] In order to achieve the above object, the present invention has the following technical solutions:

[0007] A continuously rotating cam plate drive mechanism elastic heat cooling device comprises a cam plate formed by a curve envelope, with an even number of elastic heat regenerators arranged on both sides of the cam plate, and the elastic heat regenerators are distributed on the end plates of the frame; the elastic heat regenerators are connected to the cam plate through a roller motion mechanism, and the roller motion mechanism can only perform linear reciprocating motion under the constraint of a linear slide rail; a power source is connected to the cam plate through a transmission device, and the cam plate is driven by the power source and the transmission device to rotate unidirectionally continuously, so that the elastic heat regenerators on both sides of the cam plate periodically perform loading, first holding, unloading, and second holding processes in sequence; elastic heat material is provided in the elastic heat regenerator, and when the elastic heat regenerator is loaded, the elastic heat material transforms from austenite to martensite, releasing latent heat and increasing the temperature; when the elastic heat regenerator is unloaded, the elastic heat material transforms from martensite to austenite, absorbing latent heat and decreasing the temperature; the even number of elastic heat regenerators are in different phases, and at any time at least two elastic heat regenerators absorb heat from the heat source, thereby achieving continuous cooling.

[0008] As a preferred solution, the elastic thermal material is a shape memory alloy, and the elastic thermal material is evenly arranged in the elastic thermal regenerator in a tubular form.

[0009] As a preferred solution, the frame end plate is provided with elastic heat regenerator pre-tightening devices arranged in a circular array corresponding to the number of elastic heat regenerators. The elastic heat regenerator pre-tightening devices are composed of an active inclined plate and a passive inclined plate with the same inclination angle. The inclined surfaces of the active inclined plate and the passive inclined plate coincide with each other. The lower bottom surface of the active inclined plate and the upper top surface of the passive inclined plate are parallel. The active inclined plate is placed in a groove provided on the frame end plate. The lower bottom surface of the active inclined plate coincides with the groove surface. The passive inclined plate is placed on the active inclined plate, and the elastic heat regenerator is placed on the upper top surface of the passive inclined plate.

[0010] As a preferred solution, the elastic heat regenerator pre-tightening device applies pre-tightening force through the screw-in length of the bolt. During installation, the elastic heat regenerator and the active inclined plate and the passive inclined plate are in a separated state. The active inclined plate has freedom in the horizontal direction, and the passive inclined plate has freedom in the vertical direction. When it is necessary to tighten the elastic heat regenerator or increase the pre-tightening force of the elastic heat regenerator, a horizontal force is applied to the active inclined plate through the bolt, and the active inclined plate moves laterally. The horizontal distance between the active inclined plate and the passive inclined plate changes from L to l, and the overall horizontal height of the active inclined plate and the passive inclined plate changes from h to H.

[0011] As a preferred solution, the roller motion mechanism includes a central shaft that only bears bending moment but does not transmit torque, a roller bracket that supports the elastic heat regenerator, and two rollers. The central shaft and the roller bracket are connected by interference fit, and the roller motion mechanism is connected to the slider of the linear slide rail through bolts. The two elastic heat regenerators and the roller motion mechanism in the same quadrant on the upper and lower sides of the cam plate are on the same vertical line, and the slider of the linear slide rail is constrained by the slide rail. When the cam plate rotates, the roller motion mechanism is constrained by the linear slide rail to perform linear reciprocating motion along the direction of the slide rail.

[0012] As a preferred solution, the power source consists of a motor and a reducer, which drives the cam plate to rotate continuously, and controls the speed of the motor to control the operating frequency of the elastic heat regenerator, thereby realizing controllable adjustment of the elastic heat refrigeration device; the transmission device consists of a coupling and a drive shaft, the motor and the reducer are connected by bolts, the output end of the reducer and the drive shaft are connected by a coupling, the coupling is placed in the coupling space, the drive shaft and the cam plate are connected by a key, and are fixed with two round nuts.

[0013] As a preferred solution, the cam plate is located at an arbitrary position, and all the elastic heat regenerators are divided into two groups, which are arranged in a periodic sequence of loading, first holding, unloading, and second holding processes. The states of the two groups of elastic heat regenerators differ by two processes. When half of the elastic heat regenerators are in the loading process, the other half are in the unloading process. All the elastic heat regenerators in the same state are connected in parallel through a heat exchange fluid pipeline. During the rotation of the cam plate, the two groups of elastic heat regenerators alternately perform loading, first holding, unloading, and second holding processes. When the elastic heat regenerators are in the loading and unloading processes, the water pumps and valves connected to the elastic heat regenerators are closed. When the elastic heat regenerators are in the first holding and second holding processes, the water pumps and corresponding valves connected to the elastic heat regenerators are opened.

[0014] As a preferred solution, two frame end plates are arranged opposite to each other, and the two frame end plates are connected by a connecting piece; the connecting piece bears the reaction force generated by the loaded elastic heat regenerator when the cam plate rotates, so that the distance between the two frame end plates is fixed.

[0015] A continuously rotating cam plate drive mechanism elastic heat cooling method includes arranging an even number of elastic heat regenerators on both sides of a cam plate, wherein the elastic heat regenerators have two temperature phases. The elastic heat regenerators in the same temperature phase are connected in parallel using a heat exchange fluid flow path to be divided into a first parallel elastic heat regenerator group and a second parallel elastic heat regenerator group; valves a and g are respectively provided between a high-temperature heat sink I and the first parallel elastic heat regenerator group and the second parallel elastic heat regenerator group; valves b and h are respectively provided between a low-temperature heat source II and the first parallel elastic heat regenerator group and the second parallel elastic heat regenerator group; valves c and e are respectively provided between the high-temperature heat sink I and the first parallel elastic heat regenerator group and the second parallel elastic heat regenerator group through a water pump A; valves b and f are respectively provided between the low-temperature heat source II and the first parallel elastic heat regenerator group and the second parallel elastic heat regenerator group through a water pump B; and the heat exchange process is divided into four stages:

[0016] In the first stage, water pumps A and B are kept off, the first parallel regenerative unit is loaded, and the regenerative materials in the corresponding regenerative units release latent heat, causing the temperature to rise. The second parallel regenerative unit is unloaded, and the regenerative materials in the corresponding regenerative units absorb latent heat, causing the temperature to drop.

[0017] In the second stage, water pumps A and B are started, valves a, d, e, and h are opened, and the remaining valves are closed. The first parallel elastic regenerator group releases heat to the high-temperature heat sink I, and the second parallel elastic regenerator group absorbs heat from the low-temperature heat source II.

[0018] In the third stage, pumps A and B are controlled to be turned off, the first parallel regenerative unit is unloaded, and the regenerative materials in the corresponding regenerative units absorb latent heat, causing the temperature to drop. The second parallel regenerative unit is loaded, and the regenerative materials in the corresponding regenerative units release latent heat, causing the temperature to rise.

[0019] In the fourth stage, water pumps A and B are controlled to start, valves b, c, f, and g are opened, and the remaining valves are closed. The first parallel elastic regenerator group absorbs heat from the low-temperature heat source II, and the second parallel elastic regenerator group releases heat to the high-temperature heat sink I.

[0020] As a preferred solution, the cam plate is driven to rotate continuously by a power source, and the power source is composed of a motor and a reducer. The time ratio of the elastic heat regenerator's loading, first holding, unloading, and second holding processes is controlled by changing the speed of the motor and the reducer; or, the time ratio of the elastic heat regenerator's loading, first holding, unloading, and second holding processes is controlled by changing the running track ratio of the cam plate; when the motor speed increases, the cooling capacity is increased; when the motor speed decreases, the cooling temperature span is increased.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] The present invention employs a continuously rotating cam plate drive mechanism for elastic regenerative cooling. An even number of elastic regenerative units are placed on either side of the cam plate. During the cam plate's rotation, the units cycle through a loading, first hold, unloading, and second hold phases. The elastic regenerative units contain an elastic material. When loaded, the material transforms from austenite to martensite, releasing latent heat and increasing its temperature. When unloaded, the material transforms from martensite to austenite, absorbing latent heat and decreasing its temperature. All even-numbered units are in different phases, and at any given moment, at least two are absorbing heat from the heat source. The cooling energy from the unloaded units is used to produce chilled water, while the high temperature from the loaded units is used to recover residual cooling energy from the lower-temperature chilled water returned from the chilled water return port. This allows for a continuous supply of chilled water to the user, achieving a large cooling temperature differential and high cooling capacity. The arrangement of the regenerative heat exchangers of the present invention ensures that the axial forces acting on the cam plate are equal in magnitude and opposite in direction, achieving force and torque balance, thereby significantly improving space utilization efficiency. The cam plate's movement recovers the regenerative heat exchanger's elastic potential energy. When the loaded regenerative heat exchanger is unloaded, the cam plate's rotation recovers some of its elastic potential energy. The power source is connected to the cam plate via a transmission device, and the cam plate rotates continuously in one direction under the drive of the power source and transmission device. This reduces the cam plate's rotational speed and increases the output torque. During the cam plate's continuous rotation, the power source avoids kinetic energy loss caused by starting and stopping, significantly improving energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic structural diagram of a continuously rotating cam plate drive mechanism for a thermal refrigeration device according to an embodiment of the present invention;

[0025] Figure 2(a) is a schematic diagram of the cam plate structure according to an embodiment of the present invention;

[0026] FIG2( b ) is a schematic diagram of the envelope of the cam plate according to an embodiment of the present invention;

[0027] Figure 3 Schematic diagram of the motion stroke of the cam plate according to an embodiment of the present invention;

[0028] FIG4( a ) is a schematic front view of the assembly structure of the elastic heat regenerator according to an embodiment of the present invention;

[0029] FIG4( b ) is a perspective view of the arrangement of the elastic heat regenerator according to an embodiment of the present invention;

[0030] FIG5( a ) is a schematic plan view of the structure of a pre-tightening device for a regenerative spring heat exchanger according to an embodiment of the present invention;

[0031] FIG5( b ) is a perspective view of the structure of a pre-tightening device for a regenerative elastic heat exchanger according to an embodiment of the present invention;

[0032] FIG5( c ) is a schematic diagram showing the coordination of the active inclined plate and the passive inclined plate of the pre-tensioning device of the elastic heat regenerator according to an embodiment of the present invention;

[0033] Figure 6 Schematic diagram of the pre-tightening principle of the pre-tightening device for the elastic heat regenerator according to an embodiment of the present invention;

[0034] FIG7( a ) is a schematic diagram of the connection structure between the cam plate and the regenerative heat exchanger according to an embodiment of the present invention;

[0035] FIG7( b ) is a schematic structural diagram of a roller motion mechanism according to an embodiment of the present invention;

[0036] FIG8( a ) is a schematic diagram of the internal connection structure of the power source and the transmission device according to an embodiment of the present invention;

[0037] FIG8( b ) is a schematic diagram of an enlarged structure of a transmission device connected to a portion of an embodiment of the present invention;

[0038] Figure 9 Schematic diagram of potential energy recovery of a spring-heat regenerator according to an embodiment of the present invention;

[0039] Figure 10 Schematic diagram of heat exchange principle of the electrothermal refrigeration device with a continuously rotating cam plate drive mechanism according to an embodiment of the present invention;

[0040] Figure 11 Schematic diagram of the connection of the elastic heat regenerator and the flow of heat exchange fluid according to an embodiment of the present invention;

[0041] Figure 12 Schematic diagram of stress and temperature during the caloric elastic material cycle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, ordinary technicians in this field can also derive other embodiments without making any creative work.

[0043] It should be noted that, in the description of the embodiments of the present invention, the terms "up", "down", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] See also Figure 1 The embodiment of the present invention provides a continuously rotating cam plate drive mechanism elastic heat cooling device, comprising a cam plate 102 formed by a curve envelope, with an even number of elastic heat regenerators 101 arranged on both sides of the cam plate 102. In this embodiment, the number of elastic heat regenerators 101 is 8. As shown in FIG2(a), FIG2(b) and FIG4(a), FIG4(b), the plane of the cam plate 102 is divided into four quadrants, and the 8 elastic heat regenerators are distributed in a circular array in each quadrant, and are equidistant from the center of the cam plate 102. The elastic heat regenerators 101 on both sides are arranged in a circular array. 01 With respect to the plane symmetrical distribution of the cam plate 102, taking the elastic heat regenerator 101 on the upper side of the cam plate 102 as an example, the temperature phase changes of the second elastic heat regenerator 101-2 and the third elastic heat regenerator 101-3, which have a phase angle difference of 180°, are the same, while the temperature phase changes of the first elastic heat regenerator 101-1 and the second elastic heat regenerator 101-2, which have a phase angle difference of 90°, are just opposite. The temperature phase changes of the first elastic heat regenerator 101-1 and the fifth elastic heat regenerator 101-5 located on both sides of the cam plate 102 in the same quadrant are also opposite. The elastic heat regenerator 101 is distributed on the frame end plate 104. The elastic heat regenerator 101 is connected to the cam plate 102 through the roller motion mechanism 103. The roller motion mechanism 103 can only do linear reciprocating motion under the constraint of the linear slide 105. The power source 106 is connected to the cam plate 102 through the transmission device 107. The cam plate 102 rotates continuously in one direction under the drive of the power source 106 and the transmission device 107, so that the elastic heat regenerators 101 on both sides of the cam plate 102 periodically rotate in turn. The processes of loading, first holding, unloading, and second holding are performed; a thermal elastic material is provided in the thermal elastic regenerator 101. When the thermal elastic regenerator 101 is loaded, the thermal elastic material changes from austenite to martensite, releases latent heat, and the temperature increases; when the thermal elastic regenerator 101 is unloaded, the thermal elastic material changes from martensite to austenite, absorbs latent heat, and the temperature decreases; the even number of thermal elastic regenerators 101 are in different phases, and at any time at least two thermal elastic regenerators 101 absorb heat from the heat source, thereby achieving continuous cooling.

[0045] Please refer to Figure 2 and Figure 3 The cam plate 102 is enveloping a cylinder through a curve. Figure 3The stroke (a) shown is a basic operating cycle. In this embodiment, two basic operating cycles are used. The cam plate 102 rotates one circle, and the regenerative heat exchanger 101 performs the following motion processes twice in sequence: (1) loading, (2) first holding, (3) unloading, and (4) second holding.

[0046] Please refer to Figure 5(a), Figure 5(b), Figure 5(c) and Figure 6 In one possible embodiment, the frame end plate 104 of this embodiment is provided with elastic heat regenerator pre-tightening devices 110 arranged in a circumferential array, corresponding to the number of elastic heat regenerators 101. The elastic heat regenerator pre-tightening devices 110 are composed of an active inclined plate 110-2 and a passive inclined plate 110-1 having the same inclination angle. The inclined surfaces of the active inclined plate 110-2 and the passive inclined plate 110-1 coincide with each other, the lower bottom surface of the active inclined plate 110-2 and the upper top surface of the passive inclined plate 110-1 are parallel, the active inclined plate 110-2 is placed in a groove 111 provided on the frame end plate 104, the lower bottom surface of the active inclined plate 110-2 and the groove surface coincide with each other, the passive inclined plate 110-1 is placed on the active inclined plate 110-2, and the elastic heat regenerator 101 is placed on the upper top surface of the passive inclined plate 110-1. The elastic heat regenerator pre-tightening device 110 applies pre-tightening force through the screw-in length of the bolt 110-3. During installation, the elastic heat regenerator 101 and the active inclined plate 110-2 and the passive inclined plate 110-1 are in a separated state. The active inclined plate 110-2 has freedom in the lateral direction, and the passive inclined plate 110-1 has freedom in the vertical direction. When it is necessary to tighten the elastic heat regenerator 101 or increase the pre-tightening force of the elastic heat regenerator 101, a horizontal force is applied to the active inclined plate 110-2 through the bolt 110-3, and the active inclined plate 110-2 moves laterally. The horizontal distance between the active inclined plate 110-2 and the passive inclined plate 110-1 changes from L to l, and the overall horizontal height of the active inclined plate 110-2 and the passive inclined plate 110-1 changes from h to H.

[0047] Please refer to Figure 7(a) and Figure 7(b). The roller motion mechanism 103 is the core component that converts the rotation of the cam plate 102 into reciprocating linear motion. The roller motion mechanism 103 includes a spindle 103-3 that only bears bending moment but does not transmit torque, a roller bracket 103-2 that supports the elastic heat regenerator 101, and two rollers 103-1. The spindle 103-3 and the roller bracket 103-2 are connected by an interference fit. The roller motion mechanism 103 is connected to the slider 105-1 of the linear slide 105 by bolts. The two elastic heat regenerators 101 and the roller motion mechanism 103 in the same quadrant on the upper and lower sides of the cam plate 102 are on the same vertical line. The slider 105-1 of the linear slide 105 is constrained by the slide 105-2. When the cam plate 102 rotates, the roller motion mechanism 103 is constrained by the linear slide 105 to perform linear reciprocating motion along the direction of the slide 105-2. Furthermore, in this embodiment, the roller motion mechanism 103 used to connect the cam plate 102 and the regenerative heat exchanger 101, the connection mode between the roller 103-1 and the cam plate 102 can be selected as rigid contact or flexible contact according to actual conditions.

[0048] Please refer to Figures 8(a) and 8(b). In one possible implementation, the power source 106 of this embodiment is composed of a motor 106-1 and a reducer 106-2. The power source 106 drives the cam plate 102 to rotate continuously, and controls the speed of the motor 106-1 to control the operating frequency of the elastic heat regenerator, thereby realizing controllable regulation of the elastic heat refrigeration device; the transmission device 107 is composed of a coupling 107-1 and a transmission shaft 107-2. The motor 106-1 and the reducer 106-2 are connected by bolts, and the output end of the reducer 106-2 and the transmission shaft 107-2 are connected by the coupling 107-1. The coupling 107-1 is placed in the coupling space 107-3, and the transmission shaft 107-2 and the cam plate 102 are connected by a key and fixed with two round nuts 107-4.

[0049] See also Figure 9 、 Figure 10 and Figure 12 In this embodiment, the movement of the cam plate 102 recovers the elastic potential energy of the regenerative element 101. When the loaded regenerative element 101 is unloaded, the rotation of the cam plate 102 recovers some of this elastic potential energy. The regenerative element 101 contains an elastic material, which is a shape memory alloy such as NiTi alloy. The elastic material is uniformly arranged in a tubular form within the regenerative element 101. When the regenerative element 101 is loaded, the elastic material transforms from austenite to martensite, releasing latent heat and increasing its temperature. When the regenerative element 101 is unloaded, the elastic material transforms from martensite to austenite, absorbing latent heat and decreasing its temperature. This prevents the power source from experiencing kinetic energy loss associated with starting and stopping, significantly improving energy utilization.

[0050] In this embodiment, the cam plate 102 is positioned at any position, and all the elastic heat regenerators 101 are divided into two groups. The elastic heat regenerators 101 are arranged in a cyclical sequence through the processes of loading, first holding, unloading, and second holding. The states of the two groups of elastic heat regenerators 101 differ by two processes. When half of the elastic heat regenerators 101 are in the loading process, the other half are in the unloading process. All the elastic heat regenerators 101 in the same state are connected in parallel via a heat exchange fluid pipeline. During the rotation of the cam plate 102, the two groups of elastic heat regenerators 101 alternately undergo the processes of loading, first holding, unloading, and second holding. When the elastic heat regenerators 101 are in the loading and unloading processes, the water pumps and valves connected to the elastic heat regenerators 101 are closed. When the elastic heat regenerators 101 are in the first holding and second holding processes, the water pumps and corresponding valves connected to the elastic heat regenerators 101 are opened.

[0051] In one possible implementation, Figure 1 As shown, two frame end plates 104 are provided opposite each other (a first frame end plate 104-1 and a first frame end plate 104-2), and the two frame end plates 104 are connected by a connector 108. In this embodiment, the connector 108 withstands the reaction force generated by the regenerative spring 101 when the cam plate 102 rotates, thereby maintaining a fixed distance between the two frame end plates 104.

[0052] See also Figure 11 Another embodiment of the present invention further provides an elastic calorific cooling method using a continuously rotating cam plate drive mechanism, comprising arranging an even number of elastic calorific regenerators 101 on both sides of a cam plate 102, wherein the elastic calorific regenerators 101 have two temperature phases. The elastic calorific regenerators 101 in the same temperature phase are connected in parallel using a heat exchange fluid flow path to be divided into a first parallel elastic calorific regenerator group and a second parallel elastic calorific regenerator group; valves a and g are respectively provided between a high-temperature heat sink I and the first parallel elastic calorific regenerator group and the second parallel elastic calorific regenerator group; valves b and h are respectively provided between a low-temperature heat source II and the first parallel elastic calorific regenerator group and the second parallel elastic calorific regenerator group; valves c and e are respectively provided between the high-temperature heat sink I and the first parallel elastic calorific regenerator group and the second parallel elastic calorific regenerator group through a water pump A; and valves b and f are respectively provided between the low-temperature heat source II and the first parallel elastic calorific regenerator group and the second parallel elastic calorific regenerator group through a water pump B; and the heat exchange process is divided into four stages:

[0053] In the first stage, water pumps A and B are kept off, the first parallel elastic regenerator group is loaded, and the elastic material in the corresponding elastic regenerator 101 releases latent heat, causing the temperature to rise. The second parallel elastic regenerator group is unloaded, and the elastic material in the corresponding elastic regenerator 101 absorbs latent heat, causing the temperature to drop.

[0054] In the second stage, water pumps A and B are started, valves a, d, e, and h are opened, and the remaining valves are closed. The first parallel elastic regenerator group releases heat to the high-temperature heat sink I, and the second parallel elastic regenerator group absorbs heat from the low-temperature heat source II.

[0055] In the third stage, water pumps A and B are controlled to be turned off, the first parallel elastic regenerator group is unloaded, and the elastic material in the corresponding elastic regenerator 101 absorbs latent heat, causing the temperature to decrease. The second parallel elastic regenerator group is loaded, and the elastic material in the corresponding elastic regenerator 101 releases latent heat, causing the temperature to increase.

[0056] In the fourth stage, water pumps A and B are controlled to start, valves b, c, f, and g are opened, and the remaining valves are closed. The first parallel elastic regenerator group absorbs heat from the low-temperature heat source II, and the second parallel elastic regenerator group releases heat to the high-temperature heat sink I.

[0057] In one possible embodiment, the cam plate 102 is driven to rotate continuously by a power source 106, and the power source 106 is composed of a motor 106-1 and a reducer 106-2. The time ratio of the elastic heat regenerator 101 performing the loading, first holding, unloading, and second holding processes is controlled by changing the speed of the motor 106-1 and the reducer 106-2; or, the time ratio of the elastic heat regenerator 101 performing the loading, first holding, unloading, and second holding processes is controlled by changing the running track ratio of the cam plate 102; when the speed of the motor 106-1 increases, the cooling capacity is increased; when the speed of the motor 106-1 decreases, the cooling temperature span is increased.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details described in the above embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description. It is intended that all variations that come within the meaning and range of equivalents of the claims be encompassed within the present invention, and any reference signs in the claims should not be construed as limiting the scope of protection.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A continuously rotating cam plate drive mechanism for elastic heating and cooling device, characterized in that: The invention comprises a cam plate (102) formed by a curve envelope, an even number of elastic heat regenerators (101) are arranged on both sides of the cam plate (102), and the elastic heat regenerators (101) are distributed on the frame end plate (104); the elastic heat regenerators (101) are connected to the cam plate (102) through a roller motion mechanism (103), and the roller motion mechanism (103) can only perform linear reciprocating motion under the constraint of a linear slide rail (105); a power source (106) is connected to the cam plate (102) through a transmission device (107), and the cam plate (102) is driven in one direction by the power source (106) and the transmission device (107). The cam plate (102) is continuously rotated so that the elastic heat regenerators (101) on both sides of the cam plate (102) periodically perform the processes of loading, first holding, unloading, and second holding in sequence. The elastic heat regenerator (101) is provided with an elastic heat material. When the elastic heat regenerator (101) is loaded, the elastic heat material changes from austenite to martensite, releases latent heat, and the temperature increases. When the elastic heat regenerator (101) is unloaded, the elastic heat material changes from martensite to austenite, absorbs latent heat, and the temperature decreases. The even number of elastic heat regenerators (101) are in different phases. At any time, at least two elastic heat regenerators (101) absorb heat from the heat source, thereby achieving continuous cooling.

2. The continuously rotating cam plate drive mechanism elastic heating refrigeration device according to claim 1, characterized in that: The elastic thermal material is a shape memory alloy, and the elastic thermal material is evenly arranged in a tubular form in the elastic thermal regenerator (101).

3. The continuously rotating cam plate drive mechanism elastic heating refrigeration device according to claim 1, characterized in that: The frame end plate (104) is provided with elastic heat regenerator pre-tightening devices (110) arranged in a circumferential array, corresponding to the number of elastic heat regenerators (101). The elastic heat regenerator pre-tightening devices (110) are composed of an active inclined plate (110-2) and a passive inclined plate (110-1) having the same inclination angle. The inclined surfaces of the active inclined plate (110-2) and the passive inclined plate (110-1) overlap. The lower bottom surface of the active inclined plate (110-2) and the upper top surface of the passive inclined plate (110-1) are parallel. The active inclined plate (110-2) is placed in a groove (111) provided on the frame end plate (104). The lower bottom surface of the active inclined plate (110-2) and the groove surface overlap. The passive inclined plate (110-1) is placed on the active inclined plate (110-2). The elastic heat regenerator (101) is placed on the upper top surface of the passive inclined plate (110-1).

4. The continuously rotating cam plate drive mechanism elastic heating refrigeration device according to claim 3, characterized in that: The elastic heat regenerator pre-tightening device (110) applies pre-tightening force by the screwing length of the bolt (110-3). During installation, the elastic heat regenerator (101) and the active inclined plate (110-2) and the passive inclined plate (110-1) are in a separated state. The active inclined plate (110-2) has a degree of freedom in the horizontal direction, and the passive inclined plate (110-1) has a degree of freedom in the vertical direction. When it is necessary to tighten the elastic heat regenerator (101) or increase the pre-tightening force on the elastic heat regenerator (101), a horizontal force is applied to the active inclined plate (110-2) by the bolt (110-3). The active inclined plate (110-2) moves horizontally, and the horizontal distance between the active inclined plate (110-2) and the passive inclined plate (110-1) changes from L to l, and the overall horizontal height of the active inclined plate (110-2) and the passive inclined plate (110-1) changes from h to H.

5. The continuously rotating cam plate drive mechanism elastic heating refrigeration device according to claim 1, characterized in that: The roller motion mechanism (103) comprises a spindle (103-3) that only bears bending moment but does not transmit torque, a roller bracket (103-2) that supports the elastic heat regenerator (101), and two rollers (103-1). The spindle (103-3) and the roller bracket (103-2) are connected by interference fit. The roller motion mechanism (103) is connected to a slider (105-1) of a linear slide rail (105) via bolts. The two elastic heat regenerators (101) and the roller motion mechanism (103) in the same quadrant on the upper and lower sides of the cam plate (102) are located on the same vertical line. The slider (105-1) of the linear slide rail (105) is constrained by the slide rail (105-2). When the cam plate (102) rotates, the roller motion mechanism (103) is constrained by the linear slide rail (105) and performs linear reciprocating motion along the direction of the slide rail (105-2).

6. The continuously rotating cam plate drive mechanism elastic heating refrigeration device according to claim 1, characterized in that: The power source (106) is composed of a motor (106-1) and a reducer (106-2). The power source (106) drives the cam plate (102) to rotate continuously, and controls the speed of the motor (106-1) to control the operating frequency of the elastic heat regenerator, thereby realizing controllable regulation of the elastic heat refrigeration device. The transmission device (107) is composed of a coupling (107-1) and a transmission shaft (107-2). The motor (106-1) and the reducer (106-2) are connected by bolts, and the output end of the reducer (106-2) and the transmission shaft (107-2) are connected by a coupling (107-1). The coupling (107-1) is placed in the coupling space (107-3). The transmission shaft (107-2) and the cam plate (102) are connected by a key and fixed by two round nuts (107-4).

7. The continuously rotating cam plate drive mechanism elastic heating refrigeration device according to claim 1, characterized in that: The cam plate (102) is located at an arbitrary position, and all the elastic heat regenerators (101) are divided into two groups, which are arranged in a periodic sequence of loading, first holding, unloading, and second holding processes. The states of the two groups of elastic heat regenerators (101) differ by two processes. When half of the elastic heat regenerators (101) are in the loading process, the other half of the elastic heat regenerators (101) are in the unloading process. All the elastic heat regenerators (101) in the same state are connected in parallel through a heat exchange fluid pipeline. During the rotation of the cam plate (102), the two groups of elastic heat regenerators (101) alternately perform loading, first holding, unloading, and second holding processes. When the elastic heat regenerator (101) is in the loading and unloading processes, the water pump and valve connected to the elastic heat regenerator (101) are closed. When the elastic heat regenerator (101) is in the first holding and second holding processes, the water pump and corresponding valve connected to the elastic heat regenerator (101) are opened.

8. The continuously rotating cam plate drive mechanism elastic heating refrigeration device according to claim 1, characterized in that: Two frame end plates (104) are arranged opposite to each other, and the two frame end plates (104) are connected via a connecting piece (108); The connecting member (108) bears the reaction force generated by the loaded elastic heat regenerator (101) when the cam plate (102) rotates, so that the distance between the two frame end plates (104) is fixed.

9. A method for calorific cooling using a continuously rotating cam plate drive mechanism, characterized in that: The invention comprises arranging an even number of elastic heat regenerators (101) on both sides of a cam plate (102), wherein the elastic heat regenerators (101) have two temperature phases, and the elastic heat regenerators (101) in the same temperature phase are connected in parallel using a heat exchange fluid flow path, and divided into a first parallel elastic heat regenerator group and a second parallel elastic heat regenerator group; valves a and g are respectively arranged between a high-temperature heat sink I and the first parallel elastic heat regenerator group and the second parallel elastic heat regenerator group, valves b and h are respectively arranged between a low-temperature heat source II and the first parallel elastic heat regenerator group and the second parallel elastic heat regenerator group, valves c and e are respectively arranged between the high-temperature heat sink I and the first parallel elastic heat regenerator group and the second parallel elastic heat regenerator group through a water pump A, and valves b and f are respectively arranged between the low-temperature heat source II and the first parallel elastic heat regenerator group and the second parallel elastic heat regenerator group through a water pump B; and the heat exchange process is divided into four stages: In the first stage, water pump A and water pump B are kept closed, the first parallel elastic heat regenerator group is loaded, and the elastic heat material in the corresponding elastic heat regenerator (101) releases latent heat, causing the temperature to rise. The second parallel elastic heat regenerator group is unloaded, and the elastic heat material in the corresponding elastic heat regenerator (101) absorbs latent heat, causing the temperature to drop. In the second stage, water pumps A and B are started, valves a, d, e, and h are opened, and the remaining valves are closed. The first parallel elastic regenerator group releases heat to the high-temperature heat sink I, and the second parallel elastic regenerator group absorbs heat from the low-temperature heat source II. In the third stage, the water pump A and the water pump B are controlled to be turned off, the first parallel elastic heat regenerator group is unloaded, and the elastic heat material in the corresponding elastic heat regenerator (101) absorbs latent heat, resulting in a temperature drop. The second parallel elastic heat regenerator group is loaded, and the elastic heat material in the corresponding elastic heat regenerator (101) releases latent heat, resulting in a temperature increase. In the fourth stage, water pumps A and B are controlled to start, valves b, c, f, and g are opened, and the remaining valves are closed. The first parallel elastic regenerator group absorbs heat from the low-temperature heat source II, and the second parallel elastic regenerator group releases heat to the high-temperature heat sink I.

10. The elastic heating and cooling method of the continuously rotating cam plate drive mechanism according to claim 9, characterized in that: The cam plate (102) is driven to rotate continuously by a power source (106), the power source (106) being composed of a motor (106-1) and a reducer (106-2). The time ratio of the elastic heat regenerator (101) in the processes of loading, first holding, unloading and second holding is controlled by changing the speed of the motor (106-1) and the reducer (106-2); or the time ratio of the elastic heat regenerator (101) in the processes of loading, first holding, unloading and second holding is controlled by changing the running track ratio of the cam plate (102); when the speed of the motor (106-1) increases, the cooling capacity is increased; when the speed of the motor (106-1) decreases, the cooling temperature span is increased.

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