Linkage switching valve and continuous refrigerating and heating device

Abstract

The utility model provides a linkage switching valve and a continuous refrigerating and heating device, and belongs to the technical field of refrigerating and heating equipment. The linkage switching valve comprises a valve shell, a sliding column and a connecting rod, the valve shell is provided with a sliding cavity, a main connecting pipe used for being connected with the main pipe and N branch connecting pipes used for being connected with the branch pipes, and N is a positive integer larger than or equal to 2; the sliding column is arranged in a sliding cavity of the valve shell in a sliding mode, a groove and N communicating holes are formed in the sliding column, in the sliding stroke of the sliding column, the groove is communicated with the main connecting pipe, the N communicating holes are communicated with the groove and correspond to the N branch connecting pipes respectively, and after the sliding column slides by a preset distance, one communicating hole is communicated with the corresponding branch connecting pipe; one end of the connecting rod is connected with the sliding column, and the other end of the connecting rod is used for being connected with a driving mechanism of the refrigerating and heating assembly to drive the sliding column to slide in the valve shell along with movement of the driving mechanism, so that the linkage switching valve and the refrigerating and heating assembly move synchronously. The continuous refrigerating and heating device adopts the linkage switching valve.

Description

Linkage switching valve and continuous cooling and heating device Technical Field

[0001] This utility model belongs to the technical field of refrigeration and heating equipment, and more specifically, it relates to a linkage switching valve and a continuous refrigeration and heating device. Background Technology

[0002] Currently, environmentally friendly solid refrigerants have become a new type of refrigeration technology, and research on solid refrigerants is becoming increasingly widespread and in-depth. In refrigeration equipment made from solid shape memory alloys (CMAs), the actuator periodically applies stress and unloads stress onto the CMA, causing it to release heat to rise and absorb heat to fall. Therefore, to effectively utilize the heat and cold generated, pipes and fluids are typically installed in refrigeration and heating equipment, allowing the fluid (medium) to carry the heat or cold generated by the CMA to a heat exchanger for cooling or heating the external environment.

[0003] Currently, our designed spring-loaded refrigeration and heating equipment has two interfaces at each end, one of which is a liquid inlet and the other is a liquid outlet. These four interfaces are the cold medium inlet and hot medium outlet at one end, and the hot medium inlet and cold medium outlet at the other end.

[0004] However, existing media export methods have certain problems. Generally, two pipes are installed at each end of a refrigeration / heating device, connected to four ports respectively. When the shape memory alloy heats up, the outlet at the first end exports the heated medium, and the inlet at the second end imports the medium. When the shape memory alloy cools down, the medium temperature decreases, the outlet at the second end exports the cooled medium, and the inlet at the first end imports the medium, and this cycle repeats. Because the export of the heating and cooling medium is intermittent each time, it cannot provide a continuous and stable output, which is detrimental to the stable output of subsequent cooling and heating.

[0005] To address this issue, we propose using a system that coordinates multiple heating and cooling components (i.e., heating and cooling equipment) with switching pipelines. This involves utilizing interlocking switching valves on the switching pipelines to alternately connect different interfaces on these components. This ensures a continuous and stable output of heating and cooling media, unaffected by the operational status of individual components, thus guaranteeing a continuous and stable removal of heat and cold. However, due to the short heat exchange time, prolonged retention of the media within the heating and cooling components could lead to heat neutralization, reducing heating and cooling efficiency. Therefore, the switching valves must synchronize the movement of the heating and cooling components. Currently, the electrically controlled approach suffers from latency and is also complex in terms of wiring and structure. Summary of the Invention

[0006] The purpose of this invention is to provide a linkage switching valve and a continuous cooling and heating device to solve the technical problem in the prior art that the movement state of the switching cooling and heating components of the linkage switching valve is difficult to synchronize to a high degree.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A linkage switching valve is provided, comprising a valve body, a slide column, and a connecting rod. The valve body has a sliding cavity, a main pipe for connecting to the main pipe, and N branch pipes for connecting to branch pipes, wherein N is a positive integer greater than or equal to 2. The slide column is slidably disposed in the sliding cavity of the valve body, and has a groove and N connecting holes. During the sliding stroke of the slide column, the groove communicates with the main pipe, and all N connecting holes communicate with the groove and are respectively configured to correspond to the N branch pipes. After the slide column slides a preset distance, one of the connecting holes communicates with the corresponding branch pipe. One end of the connecting rod is connected to the slide column, and the other end is connected to the drive mechanism of the cooling / heating component, so that the slide column slides within the valve body as the drive mechanism moves, thereby causing the linkage switching valve to move synchronously with the cooling / heating component.

[0008] In one possible implementation, based on the above technical solutions, the connecting rod has connecting holes at both ends for connecting to the slide column and the drive mechanism respectively; the connecting rod has a waist-shaped hole in the middle; a sealing structure is provided between the slide column and the valve body; the slide column passes through the valve body, and both ends of the valve body are provided with sealing rings and sealing end plates, the sealing rings are located between the slide column, the valve body and the sealing end plates, and the sealing end plates are fixed to the valve body by fasteners.

[0009] To achieve the above objectives, the present invention further adopts the following technical solution: A continuous cooling and heating device is provided, comprising a continuous cooling and heating unit. The continuous cooling and heating unit includes N cooling and heating components and 2M switching pipelines. Each cooling and heating component has multiple motion stages, and these multiple motion stages constitute a motion cycle. The motion cycles of the N cooling and heating components are identical, and the N cooling and heating components take turns reaching the target motion stage. Each cooling and heating component is provided with 2M interfaces, including M liquid inlets and M liquid outlets. The M liquid inlets are respectively used to input media of different temperatures at different motion stages. The system has M outlets for outputting media at different temperatures during different motion stages. Each switching pipeline has a main pipe, the aforementioned linkage switching valve, and N branch pipes. The main pipe and the N branch pipes are connected to the linkage switching valve, which connects the N branch pipes to the main pipe in turn when the N cooling and heating components reach the target motion stage in turn. Each of the N branch pipes in the switching pipeline is connected to an equivalent interface on the N cooling and heating components. The equivalent interface is the interface where the N cooling and heating components have the same input or output medium state during the same motion stage. N and M are both positive integers greater than or equal to 2.

[0010] In one possible implementation, based on the above technical solutions, the continuous cooling 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 the cold medium to output cooling capacity; the heat output component is connected to the main pipe of the switching pipeline for outputting the heat medium to output heat capacity.

[0011] In one possible implementation, based on the above technical solutions, the cold output component is a cold heat exchange pipeline, including a cold heat exchanger, a cold medium transfer 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 cold medium output switching pipeline, and the other end is connected to the main pipe of the hot medium input switching pipeline. The heat output component is a heat exchange pipeline, including a heat exchanger, a hot medium transfer pump, and a hot medium storage tank connected in series. One end of the heat exchange pipeline is connected to the main pipe of the hot medium output switching pipeline, and the other end is connected to the main pipe of the cold medium input switching pipeline.

[0012] In one possible implementation, based on the above technical solutions, the cold heat exchanger, the cold medium storage tank, and the cold medium transfer pump are arranged sequentially along the medium flow direction; the heat exchanger, the heat medium storage tank, and the heat medium transfer pump are arranged sequentially along the medium flow direction.

[0013] In one possible implementation, based on the above technical solutions, the continuous cooling and heating device includes multiple continuous cooling and heating units, and further includes a cold collection pipeline, a heat collection pipeline, a cold distribution pipeline, and a heat distribution pipeline. The cold collection pipeline is connected to the main pipe of the switching pipeline for the output cold medium of the multiple continuous cooling and heating units to collect the output cold medium; the heat collection pipeline is connected to the main pipe of the switching pipeline for the output heat medium of the multiple continuous cooling and heating units to collect the output heat medium; the cold distribution pipeline is connected to the main pipe of the switching pipeline for the input cold medium of the multiple continuous cooling and heating units to distribute the input cold medium to the multiple continuous cooling and heating units; the heat distribution pipeline is connected to the main pipe of the switching pipeline for the input heat medium of the multiple continuous cooling and heating units to distribute the input heat medium to the multiple continuous cooling and heating units.

[0014] In one possible implementation, combining the above technical solutions, both N and M are 2.

[0015] In one possible implementation, based on the above technical solutions, the cooling and heating component is a spring-loaded cooling and heating component.

[0016] The advantages of the linkage switching valve provided by this utility model are as follows: Compared with the prior art, this utility model achieves complete synchronous movement between the linkage switching valve and the cooling and heating components by using the cooperation of the valve body, slide column and connecting rod, and directly connecting the connecting rod to the drive mechanism of the cooling and heating components. As the drive mechanism moves, the slide column slides in the valve body. At the same time, the sliding cooperation between the slide column and the valve body allows for switching between different connecting pipelines at different strokes. The structure is relatively simple and reliable, less prone to mechanical failure, and convenient to use.

[0017] The beneficial effects of the continuous cooling and heating device provided by this utility model are as follows: Compared with the prior art, this utility model, through the cooperation of multiple cooling and heating components and switching pipelines, utilizes the linkage switching valve of the switching pipeline to alternately connect different interfaces on multiple cooling and heating components, so that the heating and cooling media can be continuously and stably output, unaffected by the operating status of a single cooling and heating component, thereby enabling the continuous and stable export of heat and cold energy; in addition, because the linkage switching valve forcibly cuts off other pipelines, the flow of the medium in the cooling and heating components exhibits a more obvious discontinuity, which is actually conducive to the medium remaining in the cooling and heating components for sufficient heat exchange, and flowing rapidly when needed, reducing the heat neutralization of the hot and cold media during the flow process, thereby reducing heat loss during the cooling and heating process and improving the cooling and heating efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is a schematic diagram of the structure of a continuous cooling and heating device provided in one motion stage according to an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of the structure of a continuous cooling and heating device provided in another movement stage according to an embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of the structure of a continuous cooling and heating device provided in another embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of the structure of a continuous cooling and heating device provided in another embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of the linkage switching valve provided in an embodiment of the present invention;

[0024] Figure 6 is a schematic diagram of the cross-sectional structure of the linkage switching valve provided in an embodiment of the present invention;

[0025] Figure 7 is a longitudinal cross-sectional view of the linkage switching valve provided in an embodiment of the present invention;

[0026] Figure 8 is a structural schematic diagram of the linkage switching valve provided in an embodiment of the present invention when the valve body is set to semi-transparent.

[0027] The labels for the attached figures are as follows:

[0028] 10. Refrigeration and heating components;

[0029] 20. Switching pipeline; 21. Main pipe; 22. Linkage switching valve; 23. Branch pipe;

[0030] 30. Cold output assembly; 31. Cold heat exchanger; 32. Cold medium transfer pump; 33. Cold medium storage tank;

[0031] 40. Heat output components; 41. Heat exchangers; 42. Heat transfer pumps; 43. Heat storage tanks;

[0032] 51. Cold collection piping; 52. Hot collection piping; 53. Cold distribution piping; 54. Hot distribution piping;

[0033] 221. Valve housing; 222. Main pipe; 223. Branch pipe; 224. Sliding rod; 225. Groove; 226. Connecting hole; 227. Connecting rod. Detailed Implementation

[0034] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] It should be further explained that the accompanying drawings and embodiments of this utility model mainly describe the concept of this utility model. Based on this concept, some specific forms and settings of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this utility model, they can implement the above-mentioned specific forms and settings in a well-known manner.

[0036] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0037] In the description of this utility model, "multiple" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0038] The linkage switching valve and continuous cooling and heating device provided by this utility model will now be described.

[0039] Existing media export methods typically involve installing two pipelines at each end of a refrigeration / heating device, connected to four interfaces respectively. When the shape memory alloy heats up, the outlet at the first end exports the heated medium, while the inlet at the second end imports it. Conversely, when the shape memory alloy cools down, the outlet at the second end exports the cooled medium, while the inlet at the first end imports it, and this cycle repeats. However, this method of exporting the heating and cooling media is intermittent, making continuous and stable output difficult and detrimental to the stable output of subsequent cooling and heating.

[0040] As shown in Figures 1 and 4, the first embodiment of this utility model provides a continuous cooling and heating device, including a continuous cooling and heating unit. The continuous cooling and heating unit includes N cooling and heating components 10 and 2M switching pipelines 20. Each cooling and heating component 10 has multiple movement stages, and these multiple movement stages constitute a movement cycle. The movement cycles of the N cooling and heating components 10 are the same, and the N cooling and heating components 10 take turns reaching the target movement stage. Each cooling and heating component 10 is provided with 2M interfaces, including M liquid inlets and M liquid outlets. The M liquid inlets are used to input media of different temperatures at different movement stages, and the M liquid outlets are used to... Each switching pipeline 20 is equipped with a main pipe 21, a linkage switching valve 22, and N branch pipes 23. The main pipe 21 and the N branch pipes 23 are respectively connected to the linkage switching valve 22. The linkage switching valve is used to connect the N branch pipes 23 to the main pipe 21 in turn when the N cooling and heating components 10 reach the target movement stage in turn. The N branch pipes 23 of each switching pipeline 20 are respectively used to connect to the equivalent interface on the N cooling and heating components 10. The equivalent interface is the interface in which the N cooling and heating components 10 input or output the same medium state when in the same movement stage. Wherein, N and M are both positive integers greater than or equal to 2.

[0041] It should be noted that, since the refrigeration and heating component 10 in this technical solution is part of this solution, 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 they meet the actual usage requirements. The refrigeration and heating component 10 in this technical solution utilizes a driving device to load and unload the spring-loaded material, thereby generating heat during loading and cold during unloading. The motion cycle of the refrigeration and heating component 10 refers to the process by which the spring-loaded material is loaded and compressed from its initial state (martensite) until it undergoes a complete phase transformation (austenite), and then unloaded, allowing the austenite phase transformation to completely return to its initial martensite state. The motion stage refers to the stages into which the motion cycle is divided according to indicators such as force and stroke characteristics; that is, the phase transformation stage from martensite to austenite in the refrigeration and heating component 10. Multiple motion stages continue in turn to complete one motion cycle. The target motion state is the motion stage when the spring-loaded material has completely transformed into martensite or austenite, at which point the heat and cold released by the spring-loaded material are at their maximum.

[0042] Specifically, the motion cycle can be one or more reciprocating motions of the piston mechanism of the cooling and heating component 10, one or more rotations of the rotation drive mechanism of the cooling and heating component 10, or other situations that conform to the motion of the drive mechanism of the cooling and heating component 10; the multiple motion stages of one motion cycle can be the loading motion stage and the unloading motion stage of the piston mechanism of the cooling and heating component 10, different rotation phases of the rotation drive mechanism of the cooling and heating component 10, or other situations that conform to the motion of the drive mechanism of the cooling and heating component 10.

[0043] During operation, the switching of the linkage switching valve 22 changes synchronously with the movement stage of the cooling and heating component 10. The linkage switching valve 22 can control the connection between the corresponding branch pipe 23 and the main pipe 21 in turn according to the sequence of the movement stages of the cooling and heating component 10. This allows the main pipe 21 in some switching pipes 20 to input the same temperature medium to different cooling and heating components 10 in turn, while the main pipe 21 in other switching pipes 20 can receive the medium with approximately the same temperature output from different cooling and heating components 10 in turn, so that the medium in the main pipe 21 flows continuously, thereby realizing the continuous output of cooling and heating.

[0044] Compared with the prior art, the continuous cooling and heating device provided in this embodiment, through the cooperation of multiple cooling and heating components 10 and switching pipelines 20, and by using the linkage switching valve 22 of the switching pipeline 20 to alternately connect different interfaces on multiple cooling and heating components 10, can ensure that the heating and cooling media can be continuously and stably output, unaffected by the operating status of a single cooling and heating component 10, thereby enabling the continuous and stable output of heat and cold. In addition, because the linkage switching valve 22 forcibly cuts off other pipelines, the flow of the medium in the cooling and heating components 10 exhibits a more obvious discontinuity, which is actually conducive to the medium remaining in the cooling and heating components 10 for sufficient heat exchange and rapid flow when needed, reducing the heat neutralization of the hot and cold media during the flow process, thereby reducing heat loss during the cooling and heating process and improving the cooling and heating efficiency.

[0045] As shown in Figures 1 to 4, based on the first embodiment, this utility model provides another specific embodiment as follows:

[0046] To reduce heat dissipation, an insulation structure can be installed on the switching pipe 20.

[0047] The continuous cooling and heating device also 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 for outputting cold medium and is used to output cold energy. The heat output component 40 is connected to the main pipe 21 of the switching pipeline 20 for outputting heat medium and is used to output heat energy.

[0048] 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.

[0049] The cold output assembly 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 cold medium output switching pipeline 20, and the other end is connected to the main pipe 21 of the hot medium input switching pipeline 20. The hot output assembly 40 includes a heat exchanger 41, a hot medium transfer 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 hot medium output switching pipeline 20, and the other end is connected to the main pipe 21 of the cold medium input switching pipeline 20.

[0050] 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 as needed and their specific specifications can be chosen.

[0051] This method ensures that the medium circulates continuously within the entire device, and also helps to improve the efficiency of cooling and heating, as shown in Figure 4.

[0052] In some specific embodiments, the cold heat exchanger 31, the cold medium storage tank 33, and the cold medium transfer pump 32 are arranged sequentially along the medium flow direction; the heat exchanger 41, the heat medium storage tank 43, and the heat medium transfer pump 42 are arranged sequentially along the medium flow direction; this helps to ensure the power of the medium input to the refrigeration and heating components 10.

[0053] In some specific embodiments, the continuous cooling and heating device includes multiple continuous cooling and heating units, and further includes a cold collection pipe 51, a heat collection pipe 52, a cold distribution pipe 53, and a heat distribution pipe 54. The cold collection pipe 51 is connected to the main pipe 21 of the switching pipe 20 for the output cold medium of the multiple continuous cooling and heating units to collect the output cold medium; the heat collection pipe 52 is connected to the main pipe 21 of the switching pipe 20 for the output heat medium of the multiple continuous cooling and heating units to collect the output heat medium; the cold distribution pipe 53 is connected to the main pipe 21 of the switching pipe 20 for the input cold medium of the multiple continuous cooling and heating units to distribute the input cold medium to the multiple continuous cooling and heating units; the heat distribution pipe 54 is connected to the main pipe 21 of the switching pipe 20 for the input heat medium of the multiple continuous cooling and heating units to distribute the input heat medium to the multiple continuous cooling and heating units.

[0054] As shown in Figures 5 to 8, based on the first embodiment, this utility model provides another specific embodiment as follows:

[0055] The continuous cooling and heating device also includes a controller, which is connected to the linkage switching valve 22 and the cooling and heating component 10 respectively, so as to control the linkage switching valve 22 and the cooling and heating component 10 to work together.

[0056] Specifically, the controller can be a mechanical controller, which controls the coordinated operation of the linkage switching valve 22 and the cooling / heating component 10 through the transmission of mechanical motion; the controller can also be an electronic controller, in which the linkage switching valve 22 is an electrically controlled valve and the cooling / heating component 10 is an electrically controlled component, and the controller is electrically connected to both the linkage switching valve 22 and the cooling / heating component 10 to transmit electrical signals.

[0057] In some specific embodiments, the linkage switching valve 22 includes a valve housing 221, a slide column 224, and a connecting rod 227. The valve housing 221 has a sliding cavity, a main pipe 222 for connecting to the main pipe, and N branch pipes 223 for connecting to the branch pipes 23. The slide column 224 is slidably disposed in the sliding cavity of the valve housing 221. The slide column 224 has a groove 225 and N connecting holes 226. During the sliding stroke of the slide column 224, the groove 225 communicates with the main pipe 222, and the N connecting holes 226 are all connected to the groove 225 and are respectively provided with the N branch pipes 223. After the slide column 224 slides a preset distance, one of the connecting holes 226 communicates with the corresponding branch pipe 223. One end of the connecting rod 227 is connected to the slide column 224, and the other end is connected to the drive mechanism of the cooling and heating component 10, so that the slide column 224 slides in the valve housing 221 as the drive mechanism moves, so that the linkage switching valve 22 moves synchronously with the cooling and heating component 10.

[0058] This structure allows for a simple and convenient direct control of the linkage switching valve 22 via the drive mechanism of the cooling / heating component 10, ensuring that the switching of the linkage switching valve 22 is synchronized with the movement stages of the cooling / heating component 10. Furthermore, the sliding engagement of the slide column and valve housing allows for switching between different connecting pipelines at different strokes. This design is simple, reliable, and less prone to mechanical failure, making it easy to use.

[0059] Specifically, connecting rod 227 has connecting holes at both ends for connection to slide pin 224 and drive mechanism, respectively. A slotted hole is provided in the middle of connecting rod 227 to reduce weight or allow clearance from other components. A sealing structure is provided between slide pin 224 and valve housing 221 to prevent media leakage.

[0060] The sliding column 224 passes through the valve housing 221, and both ends of the valve housing 221 are provided with sealing rings and sealing end plates. The sealing rings are located 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 by fasteners.

[0061] The slide 224 and valve housing 221 can be metal structures or non-metal structures with poor thermal conductivity.

[0062] Furthermore, to improve sealing and reduce energy dissipation, the slide column 224 is made of an elastic material with low thermal conductivity. Specifically, the slide column 224 includes an elastic body, a connecting body, and a lubricating layer; the lubricating layer is coated on the surface of the elastic body to reduce friction between the elastic body and the valve housing 221; the connecting body is made of a rigid material and is fixedly disposed at one end of the elastic body for connection with the connecting rod 227; the elastic body is an elastic colloidal structure, and ribs are embedded inside along the sliding direction of the slide column 224 to ensure the radial elasticity of the elastic body while reducing the deformation of the elastic body along the sliding direction of the slide column 224, thereby ensuring the accuracy of sliding; the elastic body is interference-fitted with the sliding cavity to ensure sealing; the groove 225 and the connecting hole 226 are both provided on the elastic body. To prevent deformation of the groove 225 and the connecting hole 226, a rigid shell can be embedded in the elastic body to form the groove 225 and the connecting hole 226.

[0063] As shown in Figures 1, 2, and 4, the present invention provides another specific embodiment based on the first embodiment as follows:

[0064] When both N and M are 2, the cooling and heating component 10 is a spring-loaded cooling and heating component, in which case the cooling and heating component 10 has only two movement stages. The continuous cooling and heating unit includes two cooling and heating components 10 (C1 and C5 respectively) and four switching pipes 20. Each cooling and heating component 10 has two movement stages, and these two movement stages constitute one movement cycle. The movement cycles of the two cooling and heating components 10 are the same, and the two movement stages are set alternately. That is, the movement phases of the two cooling and heating components 10 are different, and the compression of the spring-loaded material is in different states.

[0065] Each cooling / heating component 10 has four interfaces, including two liquid inlets and two liquid outlets. The two liquid inlets are used to input media of different temperatures at different movement stages, and the two liquid outlets are used to output media of different temperatures at different movement stages. Each switching pipeline 20 has a main pipe 21, a linkage switching valve 22, and two branch pipes 23. The main pipe 21 and the two branch pipes 23 are connected to the linkage switching valve 22, which is used to connect the two branch pipes 23 to the main pipe 21 in turn. The two branch pipes 23 of each switching pipeline 20 are respectively used to connect to the equivalent interfaces on the two cooling / heating components 10. The equivalent interfaces are those where the two cooling / heating components 10 have the same input or output media state at the same movement stage.

[0066] As shown in Figures 1 and 2, a solid valve indicates water flow, while a hollow valve indicates closure, and pumps P1 and P2 operate continuously. In Figure 1, cylinder C1 is unloaded for cooling, while cylinder C5 is loaded for heating; in Figure 2, cylinder C1 is loaded for heating, while cylinder C5 is unloaded for cooling. This achieves continuous cooling and heating.

[0067] The connection between the liquid inlet and liquid outlet of the cooling and heating component 10 controls the flow of the heating medium to the heat output component 40 (which can be a hot water tank or a heat exchanger), and the flow of the cooling medium 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 used, this will make the temperature of the hot water tank rise higher and higher, and the temperature of the cold water tank fall lower and lower.

[0068] When the control linkage switching valve 22 is switched on and off, it switches once every half cycle. Furthermore, the switching valves 22 at both ends of the same cooling / heating component 10 are set to have a 0.1-0.5 second difference in their on-time according to the order in which the medium enters, allowing sufficient heat exchange time for the medium and reducing heat loss. By connecting two sets of cooling / heating components 10 to form a heating cycle and a cooling cycle loop, heat loss during cooling and heating processes can be reduced, improving cooling and heating efficiency.

[0069] As shown in Figure 3, this utility model provides another specific embodiment based on the first embodiment as follows:

[0070] The continuous cooling and heating unit includes three cooling and heating components 10 (C1, C3, and C5) and four switching pipelines 20. Each switching pipeline 20 is equipped with a main pipe 21, a linkage switching valve 22, and three branch pipes 23. The main pipe 21 and the three branch pipes 23 are respectively connected to the linkage switching valve 22. The linkage switching valve is used to connect the three branch pipes 23 to the main pipe 21 in a preset order. Each of the three branch pipes 23 of each switching pipeline 20 is used to connect to the equivalent interface on the three cooling and heating components 10. The equivalent interface is the interface where the input or output medium state of two cooling and heating components 10 is the same during the same movement phase.

[0071] In some specific embodiments, the cooling and heating components 10 have only two movement stages. Two of the three cooling and heating components 10 have the same movement stage, while the movement stage of the other component is different. That is, two of the three cooling and heating components 10 move synchronously, and the linkage switching valve 22 connects the branch pipes 23 of these two cooling and heating components 10 to the main pipe 21 simultaneously.

[0072] In other specific embodiments, the cooling and heating components 10 have three movement stages, and the movement stages of the three cooling and heating components 10 are arranged in turn. That is, the three cooling and heating components move asynchronously, and the linkage switching valve 22 connects the branch pipes 23 of the three cooling and heating components 10 to the main pipe 21 in turn.

[0073] This method facilitates the parallel connection of multiple cooling and heating components 10 in a continuous cooling and heating unit, thereby improving the flow rate or continuity of the medium.

[0074] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A linkage switching valve, characterized in that, include: The valve housing (221) is provided with a sliding cavity, a main pipe (222) for connecting to the main pipe, and N branch pipes (223) for connecting to branch pipes (23), where N is a positive integer greater than or equal to 2; a sliding column (224) is slidably disposed in the sliding cavity of the valve housing (221), the sliding column (224) is provided with a groove (225) and N connecting holes (226), within the sliding stroke of the sliding column (224), the groove (225) communicates with the main pipe (222), and the N connecting holes (226) are all connected to the groove (225) and the main pipe (222). 25) Connected and respectively set with N support pipes (223), and after the sliding column (224) slides a preset distance, one of the connecting holes (226) is connected with the corresponding support pipe (223); connecting rod (227), one end is connected to the sliding column (224), and the other end is used to connect to the driving mechanism of the cooling and heating component (10), so that the sliding column (224) slides in the valve body (221) as the driving mechanism moves, so that the linkage switching valve (22) moves synchronously with the cooling and heating component (10).

2. The linkage switching valve as described in claim 1, characterized in that: The connecting rod (227) has connecting holes at both ends for connecting to the slide column (224) and the drive mechanism respectively; the connecting rod (227) has a waist-shaped hole in the middle; a sealing structure is provided between the slide column (224) and the valve housing (221); the slide column (224) is provided through the valve housing (221), and both ends of the valve housing (221) are provided with sealing rings and sealing end plates. The sealing ring is provided between the slide column (224), the valve housing (221) and the sealing end plate, and the sealing end plate is fixed to the valve housing (221) by fasteners.

3. A continuous cooling and heating device, characterized in that, The system includes a continuous cooling and heating unit, comprising N cooling and heating components (10) and 2M switching pipelines (20). Each cooling and heating component (10) has multiple motion stages, and these multiple motion stages constitute a motion cycle. The motion cycles of the N cooling and heating components (10) are the same, and the N cooling and heating components (10) take turns reaching the target motion stage. Each cooling and heating component (10) is provided with 2M interfaces, including M liquid inlets and M liquid outlets. The M liquid inlets are used to input media of different temperatures in different motion stages, and the M liquid outlets are used to output media of different temperatures in different motion stages. Each switching pipeline (20) is provided with a main pipe (… 21) The linkage switching valve (22) and N branch pipes (23) as described in claim 1 or 2, wherein the main pipe (21) and the N branch pipes (23) are respectively connected to the linkage switching valve (22), and the linkage switching valve is used to connect the N branch pipes (23) to the main pipe (21) in turn when the N cooling and heating components (10) reach the target movement stage in turn; the N branch pipes (23) of each switching pipeline (20) are respectively used to connect to the equivalent interface on the N cooling and heating components (10), wherein the equivalent interface is the interface in which the N cooling and heating components (10) have the same input or output medium state when in the same movement stage; wherein N and M are both positive integers greater than or equal to 2.

4. The continuous cooling and heating device as described in claim 3, characterized in that, The continuous cooling and heating device further includes: a cold output component (30), which is connected to the main pipe (21) of the switching pipeline (20) for outputting cold medium, for outputting cold energy; and a heat output component (40), which is connected to the main pipe (21) of the switching pipeline (20) for outputting heat medium, for outputting heat.

5. The continuous cooling and heating device as described in claim 4, characterized in that, The cold output component (30) is a cold heat exchange pipeline, including 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 cold medium output switching pipeline (20), and the other end is connected to the main pipe (21) of the hot medium input switching pipeline (20). The heat output component (40) is a heat exchange pipeline, including a heat exchanger (41), a hot medium transfer 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 hot medium output switching pipeline (20), and the other end is connected to the main pipe (21) of the cold medium input switching pipeline (20).

6. The continuous cooling and heating device as described in claim 5, characterized in that: The cold heat exchanger (31), the cold medium storage tank (33) and the cold medium transfer pump (32) are arranged sequentially along the medium flow direction; the heat exchanger (41), the heat medium storage tank (43) and the heat medium transfer pump (42) are arranged sequentially along the medium flow direction.

7. The continuous cooling and heating device as described in claim 3 or 5, characterized in that: The continuous cooling and heating device includes multiple continuous cooling and heating units, and further includes: a cold collection pipe (51), which is connected to the main pipe (21) of the switching pipe (20) for the output cold medium of the multiple continuous cooling and heating units, to collect the output cold medium; a heat collection pipe (52), which is connected to the main pipe (21) of the switching pipe (20) for the output heat medium of the multiple continuous cooling and heating units, to collect the output heat medium; a cold distribution pipe (53), which is connected to the main pipe (21) of the switching pipe (20) for the input cold medium of the multiple continuous cooling and heating units, to distribute the input cold medium to the multiple continuous cooling and heating units; and a heat distribution pipe (54), which is connected to the main pipe (21) of the switching pipe (20) for the input heat medium of the multiple continuous cooling and heating units, to distribute the input heat medium to the multiple continuous cooling and heating units.

8. The continuous cooling and heating device as described in claim 3, characterized in that: Both N and M are 2.

9. The continuous cooling and heating device as described in claim 3 or 8, characterized in that: The cooling and heating component (10) is a spring-loaded cooling and heating component.

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