Continuous refrigerating and heating device

Abstract

The invention provides a continuous refrigerating and heating device, and belongs to the technical field of refrigerating and heating equipment, the continuous refrigerating and heating device comprises a continuous refrigerating and heating unit, the continuous refrigerating and heating unit comprises N refrigerating and heating assemblies and 2M switching pipelines, the motion periods of the N refrigerating and heating assemblies are the same, and a plurality of motion stages are arranged in turn; each refrigerating and heating assembly is provided with 2M interfaces, M liquid inlets and M liquid outlets are formed in the 2M interfaces, the M liquid inlets are used for inputting media with different temperatures in different motion stages respectively, and the M liquid outlets are used for outputting the media with different temperatures in different motion stages respectively; each switching pipeline is provided with a main pipe, a switching valve and N branch pipes, the main pipe and the N branch pipes are connected with the switching valve, and the switching valve is used for communicating the N branch pipes with the main pipe in turn; the N branch pipes of each switching pipeline are used for being connected with equivalent connectors on the N refrigerating and heating assemblies correspondingly. Wherein N and M are positive integers greater than or equal to 2.

Description

Technical Field

[0001] The present invention belongs to the technical field of refrigeration and heating equipment, and more specifically, relates to a continuous refrigeration and heating device. Background Art

[0002] At the present stage, green and environment-friendly solid refrigerants have become a new type of refrigeration technology, and the research on solid refrigerants is becoming more and more extensive and in-depth. Among them, in a refrigeration device made of a solid elastocaloric material (shape memory alloy), a driver periodically applies stress and unloads stress to the shape memory alloy, so that the shape memory alloy releases heat to increase the temperature and absorbs heat to decrease the temperature. Therefore, in order to effectively utilize the generated heat and cold, pipelines and fluids are usually arranged in the refrigeration and heating equipment, so that the fluid (medium) can take out the heat or cold generated by the shape memory alloy to a heat exchanger to supply cold or heat to an external target environment.

[0003] At present, there are two interfaces at each end of the elastocaloric refrigeration and heating device we designed. One is the liquid inlet, and the other is the liquid outlet; these four interfaces are respectively the cold medium inlet and the hot medium outlet at one end, and the hot medium inlet and the cold medium outlet at the other end.

[0004] However, there are certain problems with the existing medium export scheme. Generally, two pipelines are arranged at each end of a refrigeration and heating device, which are respectively connected to these four interfaces; when the shape memory alloy heats up, the liquid outlet at the first end exports the heated medium, and the liquid inlet at the second end imports the medium; when the shape memory alloy cools down, the temperature of the medium decreases, the liquid outlet at the second end exports the cooled medium, and the liquid inlet at the first end imports the medium, and so on in a cycle.

[0005] When exporting the heated medium and the cooled medium by the above method, since the process of exporting the heated medium and the cooled medium each time is intermittent and cannot be continuously and stably output, it is not conducive to the stable output of subsequent cold and heat. Summary of the Invention

[0006] The purpose of the present invention is to provide a continuous refrigeration and heating device to solve the technical problem that in the prior art, the process of exporting the heated medium and the cooled medium by an elastocaloric refrigeration and heating device is intermittent each time, cannot be continuously and stably output, and is not conducive to the stable output of subsequent cold and heat.

[0007] To achieve the above object, the technical solution adopted by the present invention is as follows: A continuous refrigeration and heating device is provided, which includes a continuous refrigeration and heating unit. The continuous refrigeration and heating unit includes N refrigeration and heating components and 2M switching pipelines. Each refrigeration and heating component has multiple motion stages, and the multiple motion stages constitute a motion cycle. The motion cycles of the N refrigeration and heating components are the same and the N refrigeration and heating components reach the target motion stage in turn; 2M interfaces are provided on each refrigeration and heating component, and among the 2M interfaces, there are M liquid inlets and M liquid outlets. The M liquid inlets are respectively used to input media at different temperatures in different motion stages, and the M liquid outlets are respectively used to output media at different temperatures in different motion stages; A main pipe, a switching valve and N branch pipes are provided on each switching pipeline. The main pipe and the N branch pipes are respectively connected to the switching valve. The switching valve is used to connect the N branch pipes to the main pipe in turn when the N refrigeration and heating components reach the target motion stage in turn; The N branch pipes of each switching pipeline are respectively used to be connected to the equivalent interfaces on the N refrigeration and heating components, where the equivalent interfaces are the interfaces with the same input or output medium state when the N refrigeration and heating components are in the same motion stage; Wherein, both N and M are positive integers greater than or equal to 2.

[0008] Combined with the above technical solution, in a possible implementation manner, the continuous refrigeration and heating device further includes a cold output component and a heat output component. The cold output component is connected to the main pipe of the switching pipeline for outputting cold medium to output cold quantity; The heat output component is connected to the main pipe of the switching pipeline for outputting hot medium to output heat.

[0009] Combined with the above technical solution, in a possible implementation manner, the cold output component is a cold heat exchange pipeline, which includes a cold heat exchanger, a cold medium delivery pump and a cold medium storage tank connected in series. One end of the cold heat exchange pipeline is connected to the main pipe of the switching pipeline for outputting cold medium, and the other end is connected to the main pipe of the switching pipeline for inputting hot medium; The heat output component is a hot heat exchange pipeline, which includes a hot heat exchanger, a hot medium delivery pump and a hot medium storage tank connected in series. One end of the hot heat exchange pipeline is connected to the main pipe of the switching pipeline for outputting hot medium, and the other end is connected to the main pipe of the switching pipeline for inputting cold medium.

[0010] Combined with the above technical solution, in a possible implementation manner, the cold heat exchanger, the cold medium storage tank and the cold medium delivery pump are arranged in sequence along the medium flow direction; The hot heat exchanger, the hot medium storage tank and the hot medium delivery pump are arranged in sequence along the medium flow direction.

[0011] Combined with the above technical solution, in a possible implementation, the continuous refrigeration and heating device includes a plurality of continuous refrigeration and heating units, and also includes a cold collection pipeline, a heat collection pipeline, a cold distribution pipeline, and a heat distribution pipeline. The cold collection pipeline is respectively connected to the main pipes of the switching pipelines for outputting cold media of the plurality of continuous refrigeration and heating units to collect the output cold media; the heat collection pipeline is respectively connected to the main pipes of the switching pipelines for outputting hot media of the plurality of continuous refrigeration and heating units to collect the output hot media; the cold distribution pipeline is respectively connected to the main pipes of the switching pipelines for inputting cold media of the plurality of continuous refrigeration and heating units to disperse the input cold media into the plurality of continuous refrigeration and heating units; the heat distribution pipeline is respectively connected to the main pipes of the switching pipelines for inputting hot media of the plurality of continuous refrigeration and heating units to disperse the input hot media into the plurality of continuous refrigeration and heating units.

[0012] Combined with the above technical solution, in a possible implementation, the continuous refrigeration and heating device further includes a controller, and the controller is respectively connected to the switching valve and the refrigeration and heating component to control the coordinated operation of the switching valve and the refrigeration and heating component.

[0013] Combined with the above technical solution, in a possible implementation, the switching valve includes a valve housing, a sliding column, and a connecting rod. The valve housing is provided with a sliding cavity, a main connection pipe for connecting to the main pipe, and N branch connection pipes for connecting to the branch pipes; the sliding column is slidably arranged in the sliding cavity of the valve housing. The sliding column is provided with a groove and N communication holes. Within the sliding stroke of the sliding column, the groove is in communication with the main connection pipe, and the N communication holes are in communication with the groove and are respectively arranged corresponding to the N branch connection pipes. After the sliding column slides a preset distance, one of the communication holes is in communication with the corresponding branch connection pipe; one end of the connecting rod is connected to the sliding column, and the other end is connected to the driving mechanism of the refrigeration and heating component to drive the sliding column to slide within the valve housing as the driving mechanism moves, so that the switching valve moves synchronously with the refrigeration and heating component.

[0014] Combined with the above technical solution, in a possible implementation, the two ends of the connecting rod are respectively provided with connection holes for connecting to the sliding column and the driving mechanism; a waist-shaped hole is provided in the middle of the connecting rod to reduce the weight of the connecting rod; a sealing structure is provided between the sliding column and the valve housing; the sliding column penetrates through the valve housing, and sealing rings and sealing end plates are provided at both ends of the valve housing. The sealing rings are arranged between the sliding column, the valve housing, and the sealing end plates, and the sealing end plates are fixed to the valve housing by fasteners.

[0015] Combined with the above technical solution, in a possible implementation, both N and M are 2.

[0016] Combined with the above technical solution, in a possible implementation, the refrigeration and heating component is a snap-type refrigeration and heating component.

[0017] The beneficial effects of the continuous refrigeration and heating device provided by the present invention are as follows: Compared with the prior art, through the cooperation of multiple refrigeration and heating components and the switching pipeline, the present invention makes the heating medium and the cooling medium output continuously and stably by using the switching valve of the switching pipeline to connect different interfaces on multiple refrigeration and heating components in turn, without being affected by the operating state of a single refrigeration and heating component, so that heat and cold can be exported continuously and stably. In addition, due to the forced cut-off of other pipelines by the switching valve, the fluidity of the medium in the refrigeration and heating components shows more obvious intermittency, which is instead conducive to the medium staying in the refrigeration and heating components for sufficient heat exchange and flowing quickly when needed, reducing the heat neutralization of the hot and cold media during the flow process, thereby reducing the heat loss during the refrigeration and heating processes and improving the refrigeration and heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the continuous refrigeration and heating device provided by an embodiment of the present invention in a motion stage; Figure 2 It is a schematic structural diagram of the continuous refrigeration and heating device provided by an embodiment of the present invention in another motion stage; Figure 3 It is a schematic structural diagram of the continuous refrigeration and heating device provided by another embodiment of the present invention; Figure 4 It is a schematic structural diagram of the continuous refrigeration and heating device provided by another embodiment of the present invention; Figure 5 It is a schematic structural diagram of the switching valve of the continuous refrigeration and heating device provided by an embodiment of the present invention; Figure 6 It is a schematic cross-sectional view of the switching valve of the continuous refrigeration and heating device provided by an embodiment of the present invention in the horizontal direction; Figure 7 It is a schematic longitudinal cross-sectional view of the switching valve of the continuous refrigeration and heating device provided by an embodiment of the present invention; Figure 8 It is a schematic structural diagram of the switching valve of the continuous refrigeration and heating device provided by an embodiment of the present invention when the valve housing is set to be semi-transparent.

[0020] Among them, the reference numerals in the drawings are as follows: 10. Refrigeration and heating component; 20. Switching pipeline; 21. Main pipe; 22. Switching valve; 23. Branch pipe 30. Cold output component; 31. Cold heat exchanger; 32. Cold medium transfer pump; 33. Cold medium storage tank 40. Heat output component; 41. Heat heat exchanger; 42. Heat medium transfer pump; 43. Heat medium storage tank 51. Cold collecting pipeline; 52. Heat collecting pipeline; 53. Cold distribution pipeline; 54. Heat distribution pipeline 221. Valve housing; 222. Main connection pipe; 223. Branch connection pipe; 224. Slide column; 225. Groove; 226. Communication hole; 227. Connecting rod Detailed implementation manners

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0022] It should be further noted that the drawings and embodiments of the present invention mainly describe and explain the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above specific forms and settings in a well-known manner.

[0023] When an element is referred to as being "fixed to" or "disposed on" 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.

[0024] In the description of the present invention, the meaning of "a plurality" is two or more, and the meaning of "several" is one or more, unless otherwise specifically defined.

[0025] The continuous refrigeration and heating device provided by the present invention will now be described.

[0026] Such as Figure 1 And Figure 4As shown in the figure, the first embodiment of the present invention provides a continuous refrigeration and heating device, including a continuous refrigeration and heating unit. The continuous refrigeration and heating unit includes N refrigeration and heating components 10 and 2M switching pipelines 20. Each refrigeration and heating component 10 has multiple motion stages, and the multiple motion stages constitute a motion cycle. The motion cycles of the N refrigeration and heating components 10 are the same, and the N refrigeration and heating components 10 reach the target motion stage in turn. Each refrigeration and heating component 10 is provided with 2M interfaces. Among the 2M interfaces, there are M liquid inlets and M liquid outlets. The M liquid inlets are respectively used to input media at different temperatures in different motion stages, and the M liquid outlets are respectively used to output media at different temperatures in different motion stages. Each switching pipeline 20 is provided with a main pipe 21, a switching valve 22 and N branch pipes 23. The main pipe 21 and the N branch pipes 23 are respectively connected to the switching valve 22. The switching valve is used to connect the N branch pipes 23 to the main pipe 21 in turn when the N refrigeration and heating components 10 reach the target motion stage in turn. The N branch pipes 23 of each switching pipeline 20 are respectively used to be connected to the equivalent interfaces on the N refrigeration and heating components 10. Among them, the equivalent interfaces are the interfaces with the same input or output media state when the N refrigeration and heating components 10 are in the same motion stage. Among them, both N and M are positive integers greater than or equal to 2.

[0027] It should be noted that in the refrigeration and heating component 10 in this technical solution, therefore, the values of N and M can be determined according to the specific type and quantity of the refrigeration and heating component 10 used, as long as it can meet the actual use needs. The refrigeration and heating component 10 in this technical solution uses a driving device to load and unload the elastic card material, so that the elastic card material generates heat when loaded and cold when unloaded. Among them, the motion cycle of the refrigeration and heating component 10 refers to the process in which the elastic card material is loaded and compressed from the initial state (martensite) until the phase change is completely completed (austenite), and then unloaded so that the austenite phase change completely returns to the initial state of martensite. The motion stage refers to the stage divided according to the indexes such as force and stroke in the motion characteristics of the motion cycle, that is, the phase change stage of the elastic card material from martensite to austenite in the refrigeration and heating component 10. The multiple motion stages continue in turn to complete a motion cycle. The target motion state is the motion stage when the elastic card material is completely transformed into martensite or austenite. At this time, the heat and cold released by the elastic card material are the most.

[0028] Specifically, the movement cycle can be one or more reciprocating movements of the piston mechanism of the refrigeration and heating component 10, or one or more rotations of the rotation drive mechanism of the refrigeration and heating component 10, or other situations that conform to the movement of the drive mechanism of the refrigeration and heating component 10; the multiple movement stages of one movement cycle can be the loading movement stage of the piston mechanism of the refrigeration and heating component 10 and the unloading movement stage of the refrigeration and heating component 10, or different rotation phases of the rotation drive mechanism of the refrigeration and heating component 10, or other situations that conform to the movement of the drive mechanism of the refrigeration and heating component 10.

[0029] During operation, the switching of the switching valve 22 changes synchronously with the movement stage of the refrigeration and heating component 10, and the switching valve 22 can alternately control the connection between the corresponding branch pipe 23 and the main pipe 21 according to the sequence of the movement stages of the refrigeration and heating component 10, so that in some switching pipelines 20, the main pipe 21 can alternately input the medium with the same temperature to different refrigeration and heating components 10, and in some other switching pipelines 20, the main pipe 21 can alternately receive the medium with approximately the same temperature output by different refrigeration and heating components 10, so that the medium in the main pipe 21 flows continuously, thereby realizing the continuous output of cold and heat.

[0030] Compared with the prior art, the continuous refrigeration and heating device provided in this embodiment, through the cooperation of multiple refrigeration and heating components 10 and the switching pipeline 20, by means of alternately connecting different interfaces on multiple refrigeration and heating components 10 by the switching valve 22 of the switching pipeline 20, enables the heating medium and the cooling medium to be continuously and stably output, without being affected by the operating state of a single refrigeration and heating component 10, so that heat and cold can be continuously and stably exported; in addition, due to the forced cut-off of other pipelines by the switching valve 22, the fluidity of the medium in the refrigeration and heating component 10 shows a more obvious discontinuity, which is instead conducive to the medium staying in the refrigeration and heating component 10 for sufficient heat exchange and flowing quickly when needed, reducing the heat neutralization of the cold and hot media during the flow process, thereby reducing the heat loss during the refrigeration and heating processes and improving the refrigeration and heating efficiency.

[0031] As Figures 1 to 4 shown, a specific implementation manner provided by the present invention on the basis of the first implementation manner is as follows: To reduce the dissipation of heat, a heat preservation structure can be provided on the switching pipeline 20.

[0032] The continuous refrigeration and heating device further includes a cold output component 30 and a heat output component 40. The cold output component 30 is connected to the main pipe 21 of the switching pipeline 20 that outputs the cold medium for outputting cold; the heat output component 40 is connected to the main pipe 21 of the switching pipeline 20 that outputs the hot medium for outputting heat.

[0033] Specifically, in some embodiments, the cold output component 30 is a cold heat exchange pipeline, and the hot output component 40 is a hot heat exchange pipeline.

[0034] The cold output component 30 includes a cold heat exchanger 31, a cold medium transfer pump 32, and a cold medium storage tank 33 connected in series. One end of the cold heat exchange pipeline is connected to the main pipe 21 of the switching pipeline 20 for outputting cold medium, and the other end is connected to the main pipe 21 of the switching pipeline 20 for inputting hot medium; the hot output component 40 includes a hot heat exchanger 41, a hot medium transfer pump 42, and a hot medium storage tank 43 connected in series. One end of the hot heat exchange pipeline is connected to the main pipe 21 of the switching pipeline 20 for outputting hot medium, and the other end is connected to the main pipe 21 of the switching pipeline 20 for inputting cold medium.

[0035] Among them, the cold medium transfer pump 32, the cold medium storage tank 33, the hot medium transfer pump 42, and the hot medium storage tank 43 can be selected whether to be provided and the specific specifications according to actual needs.

[0036] In this way, on the one hand, the medium can always be kept circulating inside the whole device, and on the other hand, it is also beneficial to improve the efficiency of refrigeration and heating. See Figure 4 .

[0037] In some specific embodiments, the cold heat exchanger 31, the cold medium storage tank 33, and the cold medium transfer pump 32 are arranged in sequence along the medium flow direction; the hot heat exchanger 41, the hot medium storage tank 43, and the hot medium transfer pump 42 are arranged in sequence along the medium flow direction; this is beneficial to ensure the power of the medium input into the refrigeration and heating component 10.

[0038] In some specific embodiments, the continuous refrigeration and heating device includes a plurality of continuous refrigeration and heating units, and also includes a cold collecting pipeline 51, a hot collecting pipeline 52, a cold distribution pipeline 53, and a hot distribution pipeline 54. The cold collecting pipeline 51 is respectively connected to the main pipe 21 of the switching pipeline 20 for outputting cold medium of a plurality of continuous refrigeration and heating units to collect the output cold medium; the hot collecting pipeline 52 is respectively connected to the main pipe 21 of the switching pipeline 20 for outputting hot medium of a plurality of continuous refrigeration and heating units to collect the output hot medium; the cold distribution pipeline 53 is respectively connected to the main pipe 21 of the switching pipeline 20 for inputting cold medium of a plurality of continuous refrigeration and heating units to disperse the input cold medium into a plurality of continuous refrigeration and heating units; the hot distribution pipeline 54 is respectively connected to the main pipe 21 of the switching pipeline 20 for inputting hot medium of a plurality of continuous refrigeration and heating units to disperse the input hot medium into a plurality of continuous refrigeration and heating units.

[0039] As Figures 5 to 8 shown, a specific implementation manner provided by the present invention on the basis of the first implementation manner is as follows: The continuous refrigeration and heating device further includes a controller, which is respectively connected to the switching valve 22 and the refrigeration and heating assembly 10 to control the coordinated operation of the switching valve 22 and the refrigeration and heating assembly 10.

[0040] Specifically, the controller can be a mechanical controller, which controls the coordinated operation of the switching valve 22 and the refrigeration and heating assembly 10 through the transmission of mechanical motion; the controller can also be an electronic controller. The switching valves 22 are all electrically controlled valves, and the refrigeration and heating assemblies 10 are all electrically controlled assemblies. The controller is electrically connected to the switching valve 22 and the refrigeration and heating assembly 10 to transmit electrical signals.

[0041] In some specific embodiments, the switching valve 22 includes a valve housing 221, a sliding column 224 and a connecting rod 227. The valve housing 221 is provided with a sliding cavity, a main connecting pipe 222 for connecting with the main pipe, and N branch connecting pipes 223 for connecting with the branch pipes 23; the sliding column 224 is slidably arranged in the sliding cavity of the valve housing 221. The sliding column 224 is provided with a groove 225 and N communication holes 226. Within the sliding stroke of the sliding column 224, the groove 225 communicates with the main connecting pipe 222, and the N communication holes 226 all communicate with the groove 225 and are respectively arranged corresponding to the N branch connecting pipes 223, and after the sliding column 224 slides a preset distance, one of the communication holes 226 communicates with the corresponding branch connecting pipe 223; one end of the connecting rod 227 is connected to the sliding column 224, and the other end is connected to the driving mechanism of the refrigeration and heating assembly 10 to drive the sliding column 224 to slide within the valve housing 221 as the driving mechanism moves, so that the switching valve 22 moves synchronously with the refrigeration and heating assembly 10.

[0042] With this structure, the switching of the switching valve 22 can be directly driven by the driving mechanism of the refrigeration and heating assembly 10 simply and conveniently, and it can ensure that the switching of the switching valve 22 changes synchronously with the motion stage of the refrigeration and heating assembly 10.

[0043] Specifically, the two ends of the connecting rod 227 are respectively provided with connecting holes to be respectively connected to the sliding column 224 and the driving mechanism. The middle of the connecting rod 227 is provided with a waist-shaped hole to play roles such as reducing the weight of the connecting rod or avoiding other components. A sealing structure is provided between the sliding column 224 and the valve housing 221 to prevent medium leakage.

[0044] The sliding column 224 penetrates through the valve housing 221, and sealing rings and sealing end plates are provided at both ends of the valve housing 221. The sealing rings are arranged between the sliding column 224, the valve housing 221 and the sealing end plates, and the sealing end plates are fixed to the valve housing 221 through fasteners.

[0045] The sliding column 224 and the valve housing 221 can be of metal structure or non-metal structure with poor thermal conductivity.

[0046] Further, to enhance sealing and reduce energy dissipation, the sliding column 224 is made of an elastic low-thermal-conductivity material. Specifically, the sliding column 224 includes an elastic main body, a connecting body, and a lubricating layer; the lubricating layer is coated on the surface of the elastic main body to reduce the friction between the elastic main body and the valve housing 221; the connecting body is made of a rigid material and is fixedly arranged at one end of the elastic main body for connecting with the connecting rod 227; the elastic main body is an elastic colloid structure, and reinforcing wires arranged along the sliding direction of the sliding column 224 are embedded therein to reduce the deformation of the elastic main body in the sliding direction of the sliding column 224 while ensuring the radial elasticity of the elastic main body, thereby ensuring the accuracy of sliding; the elastic main body is in interference fit with the sliding cavity to ensure sealing; the groove 225 and the communication hole 226 are both arranged on the elastic main body. To prevent the groove 225 and the communication hole 226 from deforming, a rigid housing can be embedded in the elastic main body to form the groove 225 and the communication hole 226.

[0047] As Figures 1 to 4 shown, a specific embodiment provided by the present invention on the basis of the first embodiment is as follows: When both N and M are 2, the refrigeration and heating component 10 is a snap-in type refrigeration and heating component. At this time, the refrigeration and heating component 10 has only two motion stages. That is, the continuous refrigeration and heating unit includes 2 refrigeration and heating components 10 and 4 switching pipelines 20. Each refrigeration and heating component 10 has 2 motion stages, and the 2 motion stages constitute a motion cycle. The motion cycles of the 2 refrigeration and heating components 10 are the same and the 2 motion stages are arranged alternately. That is, the motion phases of the two refrigeration and heating components 10 are different, and the compression of the snap-in material is in different states. Each refrigeration and heating component 10 is provided with 4 interfaces. Among the 4 interfaces, there are 2 liquid inlets and 2 liquid outlets. The 2 liquid inlets are respectively used to input media at different temperatures in different motion stages, and the 2 liquid outlets are respectively used to output media at different temperatures in different motion stages; each switching pipeline 20 is provided with a main pipe 21, a linkage switching valve 22, and 2 branch pipes 23. The main pipe 21 and the 2 branch pipes 23 are respectively connected to the linkage switching valve 22. The linkage switching valve is used to alternately connect the 2 branch pipes 23 with the main pipe 21; the 2 branch pipes 23 of each switching pipeline 20 are respectively used to connect with the equivalent interfaces on the 2 refrigeration and heating components 10. Among them, the equivalent interfaces are the interfaces on the 2 refrigeration and heating components 10 where the input or output media states are the same in the same motion stage.

[0048] As Figure 1 and Figure 2 shown, the solid direction of the valve indicates water flow, and the hollow direction indicates closing. The pumps P1 and P2 work continuously. In Figure 1 , the C1 cylinder unloads for refrigeration, and at the same time, the C5 cylinder loads for heating; in as Figure 2 , the C1 cylinder loads for heating, and at the same time, the C5 cylinder unloads for refrigeration. In this way, continuous refrigeration and heating are achieved.

[0049] By controlling the conduction of the liquid inlet and outlet of the refrigeration and heating component 10, the flow direction of the temperature-raising medium is controlled to flow to the heat output component 40 (which can be a hot water tank or a heat exchanger), and the flow direction of the temperature-lowering medium is controlled to flow to the cold output component 30 (which can be a cold water tank or a cold exchanger). If a hot water tank or a cold water tank is adopted, the temperature of the hot water tank can be made higher and higher, and the temperature of the cold water tank can be made lower and lower.

[0050] When controlling the conduction and switching of the switching valve 22, it is switched once every half cycle, and the conduction times of the switching valves 22 at both ends of the same refrigeration and heating component 10 are set to differ by 0.1 - 0.5S according to the order of medium entry, which can ensure that the medium therein has sufficient heat exchange time and reduce heat loss. By connecting two groups of refrigeration and heating components 10 to form a heating cycle and a refrigeration cycle loop, heat loss during the refrigeration and heating processes can be reduced, and the refrigeration and heating efficiency can be improved.

[0051] As Figure 3 shown, a specific implementation manner provided by the present invention on the basis of the first embodiment is as follows: The continuous refrigeration and heating unit includes 3 refrigeration and heating components 10 (respectively C1, C3, and C5) and 4 switching pipelines 20. Each switching pipeline 20 is provided with a main pipe 21, a linkage switching valve 22, and 3 branch pipes 23. The main pipe 21 and the 3 branch pipes 23 are respectively connected to the linkage switching valve 22, and the linkage switching valve is used to connect the 3 branch pipes 23 to the main pipe 21 in a preset order; the 3 branch pipes 23 of each switching pipeline 20 are respectively used to connect to equivalent interfaces on the 3 refrigeration and heating components 10, where the equivalent interfaces are the interfaces with the same input or output medium state of 2 refrigeration and heating components 10 during the same motion stage.

[0052] In some specific embodiments, the refrigeration and heating component 10 has only two motion stages, and two of the 3 refrigeration and heating components 10 have the same motion stage and are different from the other one. That is, two of the 3 refrigeration and heating components 10 move synchronously, and the linkage switching valve 22 connects the branch pipes 23 of these two refrigeration and heating components 10 to the main pipe 21 simultaneously.

[0053] In other specific embodiments, the refrigeration and heating component 10 has three motion stages, and the motion stages of the 3 refrigeration and heating components 10 are arranged alternately. That is, all 3 refrigeration and heating components move asynchronously, and the linkage switching valve 22 connects the branch pipes 23 of the 3 refrigeration and heating components 10 to the main pipe 21 alternately.

[0054] In this way, it is convenient to connect multiple refrigeration and heating components 10 in parallel in the continuous refrigeration and heating unit, thereby increasing the flow rate or continuity of the medium flow.

[0055] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A continuous refrigeration and heating device, characterized in that, It includes a continuous refrigeration and heating unit, and the continuous refrigeration and heating unit includes N refrigeration and heating components (10) and 2M switching pipelines (20). Each of the refrigeration and heating components (10) has multiple motion stages, and the multiple motion stages constitute a motion cycle. The motion cycles of the N refrigeration and heating components (10) are the same, and the N refrigeration and heating components (10) reach the target motion stage in turn. Each of the refrigeration and heating components (10) is provided with 2M interfaces. Among the 2M interfaces, there are M liquid inlets and M liquid outlets. The M liquid inlets are respectively used to input media at different temperatures in different motion stages, and the M liquid outlets are respectively used to output media at different temperatures in different motion stages. Each switching pipeline (20) is provided with a main pipe (21), a switching valve (22) and N branch pipes (23). The main pipe (21) and the N branch pipes (23) are respectively connected to the switching valve (22). The switching valve is used to connect the N branch pipes (23) to the main pipe (21) in turn when the N refrigeration and heating components (10) reach the target motion stage in turn. The N branch pipes (23) of each switching pipeline (20) are respectively used to be connected to the equivalent interfaces on the N refrigeration and heating components (10). Among them, the equivalent interfaces are the interfaces with the same input or output medium state when the N refrigeration and heating components (10) are in the same motion stage. Wherein, both N and M are positive integers greater than or equal to 2.

2. The continuous refrigeration and heating device according to claim 1, wherein The continuous refrigeration and heating device further includes: A cold output component (30), connected to the main pipe (21) of the switching pipeline (20) that outputs cold medium, for outputting cold quantity. A heat output component (40), connected to the main pipe (21) of the switching pipeline (20) that outputs hot medium, for outputting heat.

3. The continuous refrigeration and heating device according to claim 2, wherein The cold output component (30) is a cold heat exchange pipeline, including a cold heat exchanger (31), a cold medium delivery pump (32) and a cold medium storage tank (33) connected in series. One end of the cold heat exchange pipeline is connected to the main pipe (21) of the switching pipeline (20) that outputs cold medium, and the other end is connected to the main pipe (21) of the switching pipeline (20) that inputs hot medium. The heat output component (40) is a heat exchange pipeline, including a heat exchanger (41), a hot medium delivery pump (42) and a hot medium storage tank (43) connected in series. One end of the heat exchange pipeline is connected to the main pipe (21) of the switching pipeline (20) that outputs hot medium, and the other end is connected to the main pipe (21) of the switching pipeline (20) that inputs cold medium.

4. The continuous refrigeration and heating device according to claim 3, characterized in that: The cold heat exchanger (31), the cold medium storage tank (33) and the cold medium delivery pump (32) are arranged in sequence along the medium flow direction; the heat exchanger (41), the hot medium storage tank (43) and the hot medium delivery pump (42) are arranged in sequence along the medium flow direction.

5. The continuous refrigeration and heating device according to claim 1 or 3, characterized in that: The continuous refrigeration and heating device includes multiple continuous refrigeration and heating units, and further includes: A cold collection pipeline (51), respectively connected to the main pipes (21) of the switching pipelines (20) that output cold medium of multiple continuous refrigeration and heating units, to collect the output cold medium. A heat collection pipeline (52) is respectively connected to the main pipe (21) of the switching pipeline (20) for outputting heat medium of multiple said continuous refrigeration and heating units to collect the output heat medium; A cold distribution pipeline (53) is respectively connected to the main pipe (21) of the switching pipeline (20) for inputting cold medium of multiple said continuous refrigeration and heating units to disperse the input cold medium into multiple said continuous refrigeration and heating units; A heat distribution pipeline (54) is respectively connected to the main pipe (21) of the switching pipeline (20) for inputting heat medium of multiple said continuous refrigeration and heating units to disperse the input heat medium into multiple said continuous refrigeration and heating units.

6. The continuous refrigeration and heating device according to claim 1, characterized in that: The continuous refrigeration and heating device further includes a controller, and the controller is respectively connected to the switching valve (22) and the refrigeration and heating component (10) to control the coordinated operation of the switching valve (22) and the refrigeration and heating component (10).

7. The continuous refrigeration and heating device according to claim 1, characterized in that, The switching valve (22) includes: A valve housing (221) provided with a sliding cavity, a main connection pipe (222) for connecting to the main pipe, and N branch connection pipes (223) for connecting to the branch pipes (23); A sliding column (224) is slidably arranged in the sliding cavity of the valve housing (221). The sliding column (224) is provided with a groove (225) and N communication holes (226). Within the sliding stroke of the sliding column (224), the groove (225) communicates with the main connection pipe (222), and the N communication holes (226) communicate with the groove (225) and are respectively arranged corresponding to the N branch connection pipes (223), and after the sliding column (224) slides a preset distance, one of the communication holes (226) communicates with the corresponding branch connection pipe (223); A connecting rod (227) has one end connected to the sliding column (224) and the other end connected to the driving mechanism of the refrigeration and heating component (10) to drive the sliding column (224) to slide within the valve housing (221) as the driving mechanism moves, so that the switching valve (22) moves synchronously with the refrigeration and heating component (10).

8. The continuous refrigeration and heating device according to claim 7, characterized in that: Both ends of the connecting rod (227) are respectively provided with connection holes for connecting to the sliding column (224) and the driving mechanism; a waist-shaped hole is provided in the middle of the connecting rod (227) to reduce the weight of the connecting rod; A sealing structure is provided between the sliding column (224) and the valve housing (221); The sliding column (224) penetrates through the valve housing (221), and sealing rings and sealing end plates are provided at both ends of the valve housing (221). The sealing rings are arranged between the sliding column (224), the valve housing (221) and the sealing end plates, and the sealing end plates are fixed to the valve housing (221) through fasteners.

9. The continuous refrigeration and heating device according to claim 1, characterized in that: Both N and M are 2.

10. The continuous refrigeration and heating device according to claim 1 or 9, characterized in that: The refrigeration and heating component (10) is a snap-in type refrigeration and heating component.

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