Cooling and heating system and method using elastocaloric material

Abstract

A cooling and heating system and method using an elastocaloric material. The cooling and heating system using an elastocaloric material is provided with a controller and a first cooling and heating device connected to the controller, wherein the controller is configured to: acquire a control instruction that carries the current temperature and a target temperature; then determine a temperature difference between the current temperature and the target temperature, and according to the temperature difference, determine the cooling or heating capacity of the first cooling and heating device; and finally, on the basis of the cooling or heating capacity, obtain an operation duration of the first cooling and heating device and a driving cycle of an elastocaloric material in the first cooling and heating device, and on the basis of the operation duration and the driving cycle of the elastocaloric material, control the first cooling and heating device to operate, so as to complete the control of the cooling and heating system using an elastocaloric material. The control process is simple and convenient.

Description

A cooling and heating system and method using spring-loaded material

[0001] This application claims priority to Chinese Patent Application No. 202510031058.0, filed on January 7, 2025, entitled "A Cooling and Heating System and Method Using Elastic Material", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of refrigeration and heating technology, and more specifically, to a refrigeration and heating system and method using spring-loaded material. Background Technology

[0003] Currently, solid-state cooling and heating technology is a new type of efficient and environmentally friendly space temperature control technology. This technology induces a phase change in solid-state materials (hereinafter referred to as "solid-state materials") by mechanically deforming them, thereby generating latent heat release and absorption to achieve the purpose of cooling and heating.

[0004] How to control refrigeration and heating devices that use spring-loaded materials is an urgent problem to be solved. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this application is to provide a refrigeration and heating system and method using spring-loaded material.

[0006] In a first aspect, embodiments of this application provide a cooling and heating system using spring-loaded material, the cooling and heating system comprising: a controller, and a first cooling and heating device connected to the controller;

[0007] The controller is used to acquire control commands, which carry the current temperature and the target temperature.

[0008] Determine the temperature difference between the current temperature and the target temperature, and determine the cooling and heating capacity of the first cooling and heating device based on the temperature difference;

[0009] Based on the determined cooling and heating capacity, the operating time of the first cooling and heating device and the driving cycle of the spring clip material in the first cooling and heating device are determined, and the first cooling and heating device is controlled to work according to the operating time and the driving cycle.

[0010] Secondly, embodiments of this application also provide a cooling and heating method for performing the functions of a controller in the cooling and heating system described in the first aspect, the method comprising:

[0011] Obtain control commands, which carry the current temperature and the target temperature;

[0012] Determine the temperature difference between the current temperature and the target temperature, and determine the cooling and heating capacity of the first cooling and heating device based on the temperature difference;

[0013] Based on the determined cooling and heating capacity, the operating time of the first cooling and heating device and the driving cycle of the spring clip material in the first cooling and heating device are determined, and the first cooling and heating device is controlled to work according to the operating time and the driving cycle.

[0014] In the solutions provided in the first to second aspects of the embodiments of this application, a controller and a first refrigeration and heating device connected to the controller are provided in the refrigeration and heating system using spring-loaded material. The controller is used to acquire control commands carrying the current temperature and the target temperature, then determine the temperature difference between the current temperature and the target temperature, and determine the refrigeration and heating capacity of the first refrigeration and heating device according to the temperature difference. Finally, based on the refrigeration and heating capacity, the operating time of the first refrigeration and heating device and the driving cycle of the spring-loaded material in the first refrigeration and heating device are obtained, and the first refrigeration and heating device is controlled to work according to the operating time and the driving cycle of the spring-loaded material. Compared with the related technologies that cannot control refrigeration and heating devices using spring-loaded material, the control process is simple and convenient, making the application prospects of refrigeration and heating systems using spring-loaded material more extensive.

[0015] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 shows a flowchart of a cooling and heating method provided in Embodiment 2 of this application. Detailed Implementation

[0018] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] Traditional refrigeration and heating equipment uses gas compressors. However, the refrigerants used in gas compression refrigeration machines (such as chlorine- or bromine-containing refrigerants) are toxic and are released into the environment in large quantities, causing a sharp decline in atmospheric ozone levels and irreversible damage to the atmosphere. Even when using environmentally friendly refrigerants (such as fluorinated or ammonia-containing refrigerants), their flammability and explosiveness pose significant safety risks. Furthermore, the energy conversion rate of gas compression for refrigeration and heating is low, resulting in energy waste.

[0022] Solid-state cooling and heating technology is a new type of efficient and environmentally friendly space temperature control technology. This technology induces a phase change in the solid-state material by mechanically deforming it, thereby releasing and absorbing latent heat to achieve the purpose of cooling and heating.

[0023] Elastic material refers to solid materials with elastic (thermal) effect, such as shape memory alloys, natural rubber, synthetic polymers, and plastic crystals. Among them, shape memory alloys (such as nickel-titanium alloys, copper-aluminum-manganese alloys, nickel-manganese-copper-cobalt alloys, and nickel-iron-gallium alloys) are widely used in elastic solid-state refrigeration technology because they have extremely high phase transition entropy values ​​and material energy efficiency ratios.

[0024] The use of cartridge-based refrigeration and heating systems to replace gas compressor-based refrigeration and heating equipment represents a development trend in refrigeration and heating equipment. However, how to control refrigeration and heating devices using cartridge-based materials is a problem that urgently needs to be solved.

[0025] Based on this, the following embodiments of this application propose a refrigeration and heating system and method using spring-loaded material. In the refrigeration and heating system using spring-loaded material, a controller and a first refrigeration and heating device connected to the controller are provided. The controller is used to acquire control commands carrying the current temperature and the target temperature, then determine the temperature difference between the current temperature and the target temperature, and determine the refrigeration and heating capacity of the first refrigeration and heating device according to the temperature difference. Finally, based on the refrigeration and heating capacity, the operating time of the first refrigeration and heating device and the driving cycle of the spring-loaded material in the first refrigeration and heating device are obtained. The first refrigeration and heating device is controlled to operate according to the operating time and the driving cycle of the spring-loaded material. Thus, the operating time of the first refrigeration and heating device and the driving cycle of the spring-loaded material in the first refrigeration and heating device are obtained according to the required refrigeration and heating capacity, and the first refrigeration and heating device is controlled to operate according to the obtained operating time and the driving cycle of the spring-loaded material, completing the control of the refrigeration and heating system using spring-loaded material. The control process is simple and convenient.

[0026] Before describing the following embodiments, the following definitions are given:

[0027] The cooling / heating capacity can be a positive or negative number.

[0028] When the cooling / heating capacity is positive, the cooling / heating system performs a cooling operation.

[0029] When the cooling / heating capacity is negative, the cooling / heating system is performing heating operation.

[0030] In the refrigeration and heating system using spring-loaded material proposed in this application, the first refrigeration and heating device and the second refrigeration and heating device respectively include: a pipeline and a medium material in the pipeline that can carry away the cold or heat generated by the pipeline structure.

[0031] The pipes in the first and second refrigeration and heating equipment are made of spring clip material.

[0032] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0033] Example 1

[0034] This embodiment proposes a cooling and heating system using spring-loaded material. The cooling and heating system includes: a controller and a first cooling and heating device connected to the controller.

[0035] The aforementioned spring-loaded material is used to form the first refrigeration and heating device of the aforementioned refrigeration and heating system.

[0036] The controller described above is used to perform the following steps (1) to (3):

[0037] (1) Obtain control commands, which carry the current temperature and the target temperature;

[0038] (2) Determine the temperature difference between the current temperature and the target temperature, and determine the cooling capacity of the first cooling and heating device based on the temperature difference.

[0039] (3) Based on the determined cooling and heating capacity, determine the operating time of the first cooling and heating device and the driving cycle of the spring card material in the first cooling and heating device, and control the first cooling and heating device to work according to the operating time and the driving cycle.

[0040] In step (1) above, the control command is issued by the user in the space where the refrigeration and heating system is located to the controller.

[0041] In step (2) above, the difference between the current temperature and the target temperature is calculated, and the result is the temperature difference between the current temperature and the target temperature.

[0042] The controller has a pre-set correspondence between temperature difference and cooling / heating capacity. Based on this correspondence, the controller can find the cooling / heating capacity that matches the temperature difference between the current temperature and the target temperature.

[0043] In practical applications, since the size of the space where the above-mentioned cooling and heating equipment is placed is uncertain, the amount of heat required to reach the target temperature from the current temperature is related to the size of the space, and the required cooling and heating capacity varies. Therefore, the cooling and heating capacity in this embodiment is the cooling and heating capacity within a certain time period (e.g., unit time).

[0044] In step (3) above, specifically, the following steps (31) to (36) can be performed:

[0045] (31) Determine the driving frequency of the spring card material corresponding to the cooling and heating capacity;

[0046] (32) Based on the driving frequency of the above-mentioned card material, the driving cycle of the above-mentioned card material is obtained, wherein a single driving cycle includes: loading time, first waiting time, unloading time and second waiting time;

[0047] (33) Obtain the unit mass cooling and heating power ratio of the above-mentioned spring card material used in the first cooling and heating equipment and the mass of the spring card material;

[0048] (34) Calculate the cooling power of the above-mentioned spring card material using the following formula:

[0049] Cooling power of the cartridge material = cooling / heating power ratio per unit mass * driving frequency of the cartridge material * mass of the cartridge material;

[0050] (35) Based on the above cooling and heating capacity and the calculated cooling power of the above-mentioned spring card material, determine the operating time of the above-mentioned first cooling and heating equipment;

[0051] (36) Control the first refrigeration and heating equipment to work according to the determined running time and the driving cycle of the cartridge material.

[0052] Generally, the more times the spring card material is loaded or unloaded, the more heat and cold energy it generates; that is, the higher the driving frequency, the greater the cooling capacity. To facilitate quantitative control, in step (31) above, the controller pre-stores the correspondence between the cooling capacity and the driving frequency of the spring card material. Therefore, by using this correspondence between the cooling capacity and the driving frequency of the spring card material, the driving frequency of the spring card material corresponding to the cooling capacity can be queried and determined.

[0053] The relationship between the cooling and heating capacity and the driving frequency of the cartridge material can be obtained by conducting driving experiments on the cartridge material, i.e., by counting the number of driving times and the cooling and heating capacity generated.

[0054] In step (32) above, the driving cycle of the cartridge material can be obtained by taking the reciprocal of the driving frequency of the cartridge material.

[0055] The controller also stores the correspondence between cooling and heating capacity, drive cycle, drive cycle loading time, drive cycle first waiting time, drive cycle unloading time and drive cycle second waiting time.

[0056] The driving cycle is equal to the sum of the driving cycle loading time, the first waiting time of the driving cycle, the driving cycle unloading time, and the second waiting time of the driving cycle.

[0057] It should be noted that the loading time is the time it takes for the driver to load the card material. During the loading process, the card material releases heat. The unloading time is the time it takes for the driver to unload the card material. During the unloading process, the card material absorbs heat. The first waiting time is the time it takes for the medium to absorb the heat released by the card material, and the second waiting time is the time it takes for the medium to absorb the cold energy released by the card material.

[0058] Here, the heat released during loading and the heat absorbed during unloading of the spring-loaded material are the same. That is, the absolute values ​​of the cooling and heating capacity generated during loading and unloading are the same within the same drive cycle. However, in practical applications, when using the heating or cooling function of this cooling and heating equipment, the first and second waiting times are different to maximize the acquisition of heating or cooling capacity. Specifically, the loading time, first waiting time, unloading time, and second waiting time of the drive cycle corresponding to a positive cooling / heating capacity are different from those corresponding to a negative cooling / heating capacity. When the cooling function is selected and the cooling / heating capacity is positive, the first waiting time is shorter than the second waiting time, maximizing the amount of cold absorbed by the medium. When the heating function is selected and the cooling / heating capacity is negative, the first waiting time is longer than the second waiting time, maximizing the amount of cold absorbed by the medium.

[0059] Therefore, after obtaining the cooling capacity and drive cycle, based on the correspondence between the cooling capacity, drive cycle, drive cycle loading time, drive cycle first waiting time, drive cycle unloading time and drive cycle second waiting time, the controller can obtain the drive cycle loading time, drive cycle first waiting time, drive cycle unloading time and drive cycle second waiting time that match the cooling capacity and drive cycle.

[0060] In step (33) above, the unit mass cooling and heating power ratio of the cartridge material is pre-cached in the controller.

[0061] Each type of cartridge material has different cooling and heating capabilities, and its cooling and heating power per unit mass is different. The cooling and heating power per unit mass is the heat released when a unit mass of cartridge material is loaded into a complete phase change, and the heat absorbed during phase change recovery.

[0062] In addition to the cooling and heating power ratio per unit mass, the controller also stores the material properties of the cartridge, such as the quantity, density, and volume of the cartridge per unit mass.

[0063] To obtain the mass of the cartridge material in the first refrigeration / heating equipment, the controller can first obtain the quantity and volume of the cartridge material per unit, and then calculate the mass of the cartridge material using the following formula:

[0064] Volume of cartridge material = Volume of unit cartridge material * Quantity of cartridge material

[0065] Mass of cartridge material = Volume of cartridge material * Density

[0066] In step (35) above, the operating time of the first refrigeration and heating equipment is determined by the following formula:

[0067] Operating time of the first refrigeration and heating equipment = refrigeration capacity / refrigeration power of the cartridge material

[0068] In the above step (36), during the process of controlling the first refrigeration and heating equipment to work according to the determined running time and the driving cycle of the spring card material, a medium material pump is set in the first refrigeration and heating equipment to blow the medium material into the pipeline of the first refrigeration and heating equipment to absorb heat and cold. Then, the medium material pump is used to suck the medium material after absorbing heat into the heat exchange device so as to use the medium material to remove the refrigeration and heating heat generated by the first refrigeration and heating equipment.

[0069] The aforementioned medium material pump is connected to the controller and is used to blow the medium material into the pipeline of the first refrigeration and heating equipment under the control of the controller, so as to use the medium material to carry away the refrigeration and heating heat generated by the first refrigeration and heating equipment.

[0070] Specifically, step (36) above can also be performed in steps (360) to (369):

[0071] (360) Obtain the specific heat capacity, density, and cross-sectional area of ​​the medium material that absorbs the heat generated by the first refrigeration and heating generator during the operation process; wherein, the aforementioned pipeline is the pipe structure in the refrigeration and heating generator of the first refrigeration and heating equipment that supplies the flow of the medium material.

[0072] (361) Find out the specific heat capacity, density and efficiency coefficient of the medium material and the cross-sectional area of ​​the pipe through which the medium material flows in the refrigeration and heating generator.

[0073] (362) Calculate the total heat absorbed by the above medium material based on the above cooling capacity and the efficiency coefficient obtained from the query.

[0074] (363) The first waiting time or the second waiting time in the driving cycle of the above-mentioned card material is determined as the medium residence time;

[0075] (364) Based on the total heat absorbed by the above-mentioned medium material and the above-mentioned medium residence time, the heat absorbed by the medium material during each medium residence time is calculated;

[0076] (365) Based on the ratio of the medium residence time to the unit time and the heat absorbed by the medium material during each medium residence time, the heat absorbed by the medium material per unit time is calculated.

[0077] (366) Based on the total heat absorbed by the medium material, the current temperature and the target temperature, query the historical temperature difference between the temperature before and after the medium material absorbs the cooling heat generated by the medium material on the bombardment material, corresponding to the total heat absorbed by the medium material, the current temperature and the target temperature.

[0078] (367) The flow velocity of the medium in the pipeline is calculated using the following formula: Q 吸 =ηCρSv*ΔT

[0079] Among them, Q 吸 The value represents the heat absorbed by the medium material per unit time; C represents the specific heat capacity of the medium material; ρ represents the density of the medium material; ΔT represents the historical temperature difference between the temperature before and after the medium material absorbs the total heat absorbed by the medium material, the current temperature, and the target temperature to generate cooling and heating heat for the spring card material; v represents the flow velocity of the medium material in the pipeline; η represents the efficiency coefficient.

[0080] (368) By calculating the flow velocity of the medium material in the pipeline, the pump power of the medium material pump that matches the flow velocity is determined, wherein the medium material pump is used to blow the medium material into the cooling and heating generator according to the determined pump power so that the medium material absorbs the heat generated by the cooling and heating generator, or blows the absorbed heat into the space where the cooling and heating system is located so as to exchange heat with the space where the cooling and heating system is located.

[0081] (369) The first refrigeration and heating equipment is controlled to work according to the above-mentioned running time, the above-mentioned driving cycle of the card material, and the above-mentioned pump power.

[0082] In the above step (360), the specific heat capacity, density, and cross-sectional area of ​​the pipeline through which the medium material flows are all pre-stored in the controller.

[0083] In step (361) above, the controller is pre-set with the correspondence between the specific heat capacity, density, cross-sectional area of ​​the pipe through which the medium material flows, and efficiency coefficient. From the correspondence between the specific heat capacity, density, cross-sectional area of ​​the pipe through which the medium material flows, and efficiency coefficient, the efficiency coefficient corresponding to the specific heat capacity, density, and cross-sectional area of ​​the pipe through which the medium material flows in the refrigeration and heating generator can be found.

[0084] It should be noted that when the heat or cold released by the spring material is exchanged through the medium material, there is heat loss due to the design of the pipe or the space conduction. Therefore, the efficiency coefficient is obtained through experiments, that is, by changing factors such as the pipe structure (e.g., cross-sectional area, pipe shape, length, etc.), the type of medium material, etc., and measuring the heat exchanged.

[0085] In step (362) above, the total heat absorbed by the medium material is calculated using the following formula:

[0086] Total heat absorbed by the medium material = cooling / heating capacity * efficiency coefficient.

[0087] In the above step (363), the medium material must remain in the pipeline of the cooling and heating generator of the first cooling and heating equipment in order to carry away the cooling and heating energy generated in the pipeline of the first cooling and heating equipment.

[0088] The residence time of the medium is the time that the medium material stays in the pipes of the refrigeration or heating generator, that is, the time it takes for the medium material to completely absorb the heat or cold generated in the pipes. The medium material begins to exchange heat when it enters the pipes, and the longer its residence time, the more heat or cold it absorbs.

[0089] To determine the media residence time, the controller can compare a first waiting time and a second waiting time to obtain the ratio of the first waiting time to the second waiting time. When the ratio of the first waiting time to the second waiting time is greater than 1 and a cooling operation is performed, the first waiting time is determined as the media residence time. When the ratio of the first waiting time to the second waiting time is less than 1 and a heating operation is performed, the second waiting time is determined as the media residence time.

[0090] It should be noted that when using the cooling function, the medium residence time is the time it takes for the medium material to absorb cold energy (first waiting time), and when using the heating function, the medium residence time is the time it takes for the medium material to absorb heat (second waiting time).

[0091] In step (364) above, the heat absorbed by the medium material during each medium residence time is calculated using the following formula:

[0092] Heat absorbed by the medium material during each residence time = Total heat absorbed by the medium material / Residence time of the medium.

[0093] In step (365) above, first calculate the ratio of the medium residence time to the duration per unit time, and then multiply the calculated duration ratio by the heat absorbed by the medium material during each medium residence time to calculate the heat absorbed by the medium material per unit time.

[0094] In step (366) above, the controller pre-stores the total heat absorbed by the medium material, the current temperature, the target temperature, and the historical temperature difference between the temperature of the medium material before and after absorbing the heat generated by the medium material to cool the card material.

[0095] This historical temperature difference is an empirical value.

[0096] In step (367) above, the empirical coefficient is a preset value.

[0097] In step (368) above, the controller stores in advance the relationship between the pump power of the medium material pump and the flow rate of the medium material in the pipeline.

[0098] The controller determines the pump power of the medium material pump that matches the flow rate by using a pre-stored correspondence between the pump power of the medium material pump and the flow rate of the medium material in the pipeline.

[0099] The cooling and heating system proposed in this embodiment also includes a display unit, which is connected to the controller.

[0100] In addition to executing steps (31) to (36) above, the controller may also execute steps (a) to (h):

[0101] (a) Obtain the refrigeration coefficient of the spring clip material used in the first refrigeration and heating equipment, the driving cycle coefficient of the driving cycle of the spring clip material, and the flow velocity coefficient of the medium material in the pipeline.

[0102] (b) Obtain the actual flow velocity of the medium material in the pipeline and the length of the pipeline;

[0103] (c) Based on the actual flow velocity of the medium material in the pipeline and the length of the pipeline, the actual residence time of the medium material in the pipeline is calculated.

[0104] (d) Calculate the first ratio between the actual flow velocity of the medium material in the pipeline and the flow velocity of the medium material in the pipeline;

[0105] (e) Obtain the loading time and unloading time within the driving cycle of the aforementioned cartridge material, and calculate the actual driving cycle of the aforementioned cartridge material using the aforementioned actual dwell time, loading time, and unloading time.

[0106] (f) Calculate the second ratio of the actual driving cycle to the driving cycle of the aforementioned cartridge material;

[0107] (g) The cooling and heating index of the target cooling and heating equipment is calculated using the following formula:

[0108] Cooling and heating index = Coefficient of performance (COP) + K1 * First ratio + K2 * Second ratio

[0109] Among them, K1 and K2 are preset values;

[0110] (h) Display the calculated cooling and heating indexes.

[0111] In step (a) above, the refrigeration coefficient of the spring clip material used in the first refrigeration and heating equipment, the driving cycle coefficient of the driving cycle of the spring clip material, and the flow rate coefficient of the above-mentioned medium material in the pipeline are all pre-stored in the controller of the first refrigeration and heating equipment.

[0112] In step (b) above, a flow meter that communicates with the controller is installed in the pipeline.

[0113] During the operation of the first refrigeration and heating equipment, the flow meter installed in the pipeline measures the actual flow velocity of the medium material in the pipeline and sends the measured actual flow velocity of the medium material in the pipeline to the controller.

[0114] The lengths of the aforementioned pipelines are pre-stored in the controller.

[0115] In step (c) above, the actual residence time of the medium material in the pipeline is calculated using the following formula:

[0116] Actual residence time in the pipeline = actual flow velocity of the medium in the pipeline / length of the pipeline.

[0117] In step (d) above, the first ratio = actual flow velocity of the medium in the pipeline / flow velocity of the medium in the pipeline.

[0118] In step (e) above, the controller can first update the first waiting time or the second waiting time using the actual dwell time, and then use the updated first waiting time or the second waiting time to calculate the actual driving cycle of the cartridge material.

[0119] If the media dwell time is the first waiting time, update the first waiting time using the actual dwell time; otherwise, update the second waiting time using the actual dwell time.

[0120] Specifically, when updating during the first waiting time, the actual driving cycle of the card material = loading time + unloading time + second waiting time + first waiting time after the update.

[0121] When the update is performed during the second waiting period, the actual driving cycle of the card material = loading time + unloading time + first waiting period + second waiting period after the update.

[0122] In step (f) above, the second ratio = actual driving cycle of the cartridge material / driving cycle of the cartridge material.

[0123] In step (g) above, the preset values ​​K1 and K2 are pre-stored in the controller.

[0124] In step (h) above, the controller sends the calculated cooling and heating index to the display unit for display.

[0125] Furthermore, a second refrigeration and heating device can be installed in the refrigeration and heating system. The first and second refrigeration and heating devices use different spring clip materials, which makes the first and second refrigeration and heating devices have different refrigeration and heating powers in different temperature ranges.

[0126] The controller is connected to the second refrigeration and heating equipment.

[0127] In order to control the first and second refrigeration and heating devices, the controller will assign their respective refrigeration and heating device identifiers to the first and second refrigeration and heating devices, and control the first refrigeration and heating device.

[0128] You can perform the following steps (a1) through (a4):

[0129] (a1) Obtain control commands, which carry the current temperature and the target temperature;

[0130] (a2) Determine the temperature range to which the current temperature and the target temperature belong, and select the cooling and heating power that matches the temperature range from the first cooling and heating device and the second cooling and heating device, and determine the cooling and heating device that matches the cooling and heating power of the temperature range from the first cooling and heating device and the second cooling and heating device as the target cooling and heating device.

[0131] (a3) Calculate the temperature difference between the current temperature and the target temperature, and determine the required cooling capacity based on the temperature difference.

[0132] (a4) Based on the determined cooling capacity, determine the operating time of the target cooling and heating equipment and the driving cycle of the spring clip material in the target cooling and heating equipment, and control the target cooling and heating equipment to work according to the determined operating time and the driving cycle of the spring clip material.

[0133] In step (a2) above, the controller pre-stores the correspondence between the identification of the cooling and heating equipment, the temperature range and the cooling and heating power.

[0134] Therefore, the controller can select the cooling and heating power that matches the temperature range from the first cooling and heating device and the second cooling and heating device according to the pre-stored correspondence between the cooling and heating device identifier, temperature range and cooling and heating power, and determine the cooling and heating device corresponding to the cooling and heating power that matches the temperature range from the first cooling and heating device and the second cooling and heating device as the target cooling and heating device.

[0135] The specific implementation process of steps (a3) ​​to (a4) above is similar to the process described in steps (2) to (3) of the controller controlling the first refrigeration and heating equipment described above, and will not be repeated here.

[0136] In one embodiment, the piping in the first and second refrigeration and heating devices can be composed of multiple spring clip material units connected in series or in parallel.

[0137] Accordingly, the mass of the aforementioned cartridge material in step (33) is the total mass of the multiple cartridge material units. The volume of the aforementioned cartridge material is the total volume of the multiple cartridge material units.

[0138] The quantity of the aforementioned cartridge material refers to the quantity of multiple cartridge material units.

[0139] The volume of the unit cartridge material mentioned above is the volume of a single cartridge material unit.

[0140] The driving cycle of the aforementioned cartridge material is the driving cycle of the cartridge material unit.

[0141] The aforementioned properties of the cartridge material may also include properties related to the cartridge material unit, such as the number of cartridge material units, the driving cycle, and the volume of a single cartridge material unit.

[0142] Furthermore, the controller can be connected to each of the multiple spring-loaded material units in the first refrigeration and heating equipment and each of the multiple spring-loaded material units in the second refrigeration and heating equipment via solenoid valves, and control the opening and closing of each spring-loaded material unit in the first refrigeration and heating equipment and / or each spring-loaded material unit in the second refrigeration and heating equipment.

[0143] The following content will introduce the process of the controller controlling the opening and closing of each spring-loaded material unit in the first refrigeration and heating equipment and / or the second refrigeration and heating equipment, taking the controller's control of the opening and closing of each spring-loaded material unit in the first refrigeration and heating equipment as an example.

[0144] The controller described above is also used to perform the following steps (x1) to (x3):

[0145] (x1) When the above-mentioned cooling capacity is less than the cooling capacity threshold, the number of spring card material units that the first cooling and heating device needs to open is determined from the pre-set correspondence between the cooling capacity and the number of spring card material units opened.

[0146] (x2) Based on the above cooling and heating capacity, determine the operating time of the first cooling and heating device corresponding to the above cooling and heating capacity and the driving cycle of the spring card material unit in the first cooling and heating device.

[0147] (x3) The solenoid valve controlling the number of the above-mentioned spring-loaded material units in the first refrigeration and heating equipment is opened, and the spring-loaded material units controlling the number of the above-mentioned spring-loaded material units work according to the determined running time and driving cycle.

[0148] In step (x1) above, the aforementioned cooling and heating capacity threshold is the product of the maximum cooling and heating capacity of the first cooling and heating device and the cooling capacity coefficient. The aforementioned cooling capacity coefficient can be any preset value between 0.1 and 0.7, which will not be elaborated here.

[0149] In summary, this embodiment proposes a refrigeration and heating system using spring-loaded material. The system includes a controller and a first refrigeration and heating device connected to the controller. The controller acquires control commands carrying the current temperature and target temperature, determines the temperature difference between the current and target temperatures, and determines the refrigeration capacity of the first refrigeration and heating device based on the temperature difference. Finally, based on this refrigeration capacity, the operating time of the first refrigeration and heating device and the driving cycle of the spring-loaded material within it are obtained. The first refrigeration and heating device is then controlled to operate according to the operating time and the driving cycle of the spring-loaded material. Compared to related technologies that cannot control refrigeration and heating devices using spring-loaded material, this embodiment obtains the operating time and driving cycle of the first refrigeration and heating device based on the required refrigeration capacity and controls the first refrigeration and heating device accordingly. This completes the control of the refrigeration and heating system using spring-loaded material, making the control process simple and convenient, and thus broadening the application prospects of refrigeration and heating systems using spring-loaded material.

[0150] Example 2

[0151] Referring to the flowchart of a cooling and heating method shown in Figure 1, this embodiment proposes a cooling and heating method to realize the function of the controller in the cooling and heating system using spring-loaded material proposed in Embodiment 1 above. The cooling and heating method includes the following specific steps 100 to 104:

[0152] Step 100: Obtain control commands, which contain the current temperature and the target temperature.

[0153] Step 102: Determine the temperature difference between the current temperature and the target temperature, and determine the cooling and heating capacity of the first cooling and heating device based on the temperature difference.

[0154] Step 104: Based on the determined cooling and heating capacity, determine the operating time of the first cooling and heating device and the driving cycle of the spring clip material in the first cooling and heating device, and control the first cooling and heating device to work according to the operating time and the driving cycle.

[0155] Specifically, step 104 above includes the following specific steps (20) to (25):

[0156] (20) Determine the driving frequency of the spring card material corresponding to the cooling and heating capacity;

[0157] (21) Based on the driving frequency of the above-mentioned card material, the driving cycle of the above-mentioned card material is obtained, wherein a single driving cycle includes: loading time, first waiting time, unloading time and second waiting time;

[0158] (22) Obtain the unit mass cooling and heating power ratio of the above-mentioned spring card material used in the first cooling and heating equipment and the mass of the spring card material;

[0159] (23) Calculate the cooling power of the above-mentioned spring card material using the following formula:

[0160] Cooling power of the cartridge material = cooling / heating power ratio per unit mass * driving frequency of the cartridge material * mass of the cartridge material;

[0161] (24) Based on the above cooling and heating capacity and the calculated cooling power of the above-mentioned spring card material, determine the operating time of the above-mentioned first cooling and heating equipment;

[0162] (25) Control the first refrigeration and heating equipment to work according to the determined running time and the driving cycle of the cartridge material.

[0163] Specifically, step 25 above includes the following specific steps (251) to (260):

[0164] (251) Obtain the specific heat capacity, density, and cross-sectional area of ​​the medium material that absorbs the heat generated by the first refrigeration and heating generator during the operation process; wherein, the aforementioned pipeline is the pipe structure in the refrigeration and heating generator of the first refrigeration and heating equipment that supplies the flow of the medium material.

[0165] (252) Find out the specific heat capacity, density and efficiency coefficient of the medium material and the cross-sectional area of ​​the pipe through which the medium material flows in the refrigeration and heating generator.

[0166] (253) Calculate the total heat absorbed by the above medium material based on the above cooling capacity and the efficiency coefficient obtained from the query.

[0167] (254) The first waiting time or the second waiting time in the driving cycle of the above-mentioned cartridge material is determined as the medium residence time;

[0168] (255) Based on the total heat absorbed by the above-mentioned medium material and the above-mentioned medium residence time, the heat absorbed by the medium material during each medium residence time is calculated;

[0169] (256) Based on the ratio of the medium residence time to the unit time and the heat absorbed by the medium material during each medium residence time, the heat absorbed by the medium material per unit time is calculated.

[0170] (257) Based on the total heat absorbed by the medium material, the current temperature and the target temperature, query the historical temperature difference between the temperature before and after the medium material absorbs the cooling heat generated by the medium material on the bombardment material, corresponding to the total heat absorbed by the medium material, the current temperature and the target temperature.

[0171] (258) The flow velocity of the medium in the pipeline is calculated using the following formula: Q 吸 =ηCρSv*ΔT

[0172] Among them, Q 吸 ρ represents the heat absorbed by the medium material per unit time; C represents the specific heat capacity of the medium material; ρ represents the density of the medium material; ΔT represents the historical temperature difference between the temperature before and after the medium material absorbs the total heat absorbed by the medium material, the current temperature, and the target temperature, corresponding to the temperature at which the medium material generates cooling and heating energy for the spring card material; v represents the flow velocity of the medium material in the pipeline; η represents an empirical coefficient.

[0173] (259) By calculating the flow velocity of the medium material in the pipeline, the pump power of the medium material pump that matches the flow velocity is determined, wherein the medium material pump is used to blow the medium material into the cooling and heating generator according to the determined pump power so that the medium material absorbs the heat generated by the cooling and heating generator, or blows the absorbed heat into the space where the cooling and heating system is located so as to exchange heat with the space where the cooling and heating system is located.

[0174] (260) The first refrigeration and heating equipment is controlled to work according to the above-mentioned running time, the above-mentioned driving cycle of the card material, and the above-mentioned pump power.

[0175] Furthermore, the cooling and heating method proposed in this embodiment also includes the following steps (d1) to (d8):

[0176] (d1) Obtain the refrigeration coefficient of the spring clip material used in the first refrigeration and heating equipment, the driving cycle coefficient of the driving cycle of the spring clip material, and the flow velocity coefficient of the medium material in the pipeline.

[0177] (d2) Obtain the actual flow velocity of the above-mentioned medium material in the above-mentioned pipeline and the length of the above-mentioned pipeline;

[0178] (d3) Based on the actual flow velocity of the medium material in the pipeline and the length of the pipeline, the actual residence time of the medium material in the pipeline is calculated.

[0179] (d4) Calculate the first ratio between the actual flow velocity of the above-mentioned medium material in the above-mentioned pipeline and the flow velocity of the above-mentioned medium material in the pipeline;

[0180] (d5) Obtain the loading time and unloading time within the driving cycle of the above-mentioned cartridge material, and use the above-mentioned actual dwell time, loading time and unloading time to calculate the actual driving cycle of the above-mentioned cartridge material;

[0181] (d6) Calculate the second ratio of the actual driving cycle to the driving cycle of the above-mentioned cartridge material;

[0182] (d7) The cooling and heating index of the target cooling and heating equipment is calculated using the following formula:

[0183] Cooling and heating index = Coefficient of performance (COP) + K1 * First ratio + K2 * Second ratio

[0184] Among them, K1 and K2 are preset values;

[0185] (d8) Display the calculated cooling and heating indices.

[0186] Furthermore, the cooling and heating method proposed in this embodiment also includes steps (e1) to (e3):

[0187] (e1) When the above-mentioned cooling capacity is less than the cooling capacity threshold, the number of spring card material units that the first cooling and heating device needs to open is determined from the pre-set correspondence between the cooling capacity and the number of spring card material units opened.

[0188] (e2) Based on the above cooling and heating capacity, determine the operating time of the first cooling and heating device corresponding to the above cooling and heating capacity and the driving cycle of the spring card material unit in the first cooling and heating device.

[0189] (e3) The solenoid valve controlling the number of the above-mentioned spring-loaded material units in the first refrigeration and heating equipment is opened, and the spring-loaded material units controlling the number of the above-mentioned spring-loaded material units work according to the determined running time and driving cycle.

[0190] In summary, this embodiment proposes a cooling and heating method. In a cooling and heating system using spring-loaded material, a controller and a first cooling and heating device connected to the controller are provided. The controller is used to acquire control commands carrying the current temperature and target temperature, then determine the temperature difference between the current temperature and the target temperature, and determine the cooling and heating capacity of the first cooling and heating device according to the temperature difference. Finally, based on the cooling and heating capacity, the operating time of the first cooling and heating device and the driving cycle of the spring-loaded material in the first cooling and heating device are obtained. The first cooling and heating device is controlled to work according to the operating time and the driving cycle of the spring-loaded material. Compared with the related technologies that cannot control cooling and heating devices using spring-loaded material, this method obtains the operating time of the first cooling and heating device and the driving cycle of the spring-loaded material in the first cooling and heating device according to the required cooling and heating capacity, and controls the first cooling and heating device to work according to the obtained operating time and the driving cycle of the spring-loaded material, thus completing the control of the cooling and heating system using spring-loaded material. The control process is simple and convenient, making the application prospects of the cooling and heating system using spring-loaded material more extensive.

[0191] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A refrigeration and heating system using spring-loaded material, characterized in that, The refrigeration and heating system includes: a controller and a first refrigeration and heating device connected to the controller; The controller is used to acquire control commands, which carry the current temperature and the target temperature. Determine the temperature difference between the current temperature and the target temperature, and determine the cooling and heating capacity of the first cooling and heating device based on the temperature difference; Based on the determined cooling and heating capacity, the operating time of the first cooling and heating device and the driving cycle of the spring clip material in the first cooling and heating device are determined, and the first cooling and heating device is controlled to work according to the operating time and the driving cycle.

2. The system according to claim 1, characterized in that, The controller is configured to determine the operating time of the first refrigeration / heating device and the driving cycle of the spring clip material in the first refrigeration / heating device based on the determined refrigeration / heating capacity, and to control the first refrigeration / heating device to operate according to the operating time and the driving cycle, including: Determine the driving frequency of the spring-loaded material corresponding to the cooling and heating capacity; The driving cycle of the card material is obtained based on the driving frequency of the card material, wherein a single driving cycle includes: loading time, first waiting time, unloading time and second waiting time; Obtain the unit mass cooling and heating power ratio of the spring clip material used in the first cooling and heating equipment and the mass of the spring clip material; The cooling power of the spring-loaded material is calculated using the following formula: Cooling power of the cartridge material = cooling / heating power ratio per unit mass * driving frequency of the cartridge material * mass of the cartridge material; Based on the cooling and heating capacity and the calculated cooling power of the spring card material, the operating time of the first cooling and heating equipment is determined. Based on the determined operating time and the driving cycle of the cartridge material, the first refrigeration and heating equipment is controlled to operate.

3. The system according to claim 2, characterized in that, The controller is used to control the first refrigeration and heating equipment to operate according to the determined running time and the driving cycle of the cartridge material, including: The specific heat capacity, density, and cross-sectional area of ​​the pipeline through which the medium material absorbs the heat generated by the first refrigeration and heating generator during operation are obtained; wherein, the pipeline is the pipe structure in the first refrigeration and heating equipment that supplies the flow of the medium material in the refrigeration and heating generator. Find the efficiency coefficient corresponding to the specific heat capacity, density, and cross-sectional area of ​​the pipeline through which the medium material flows in the refrigeration / heating generator; The total heat absorbed by the medium material is calculated based on the cooling capacity and the efficiency coefficient obtained from the query. The first or second waiting time in the driving cycle of the cartridge material is defined as the medium residence time. Based on the total heat absorbed by the medium material and the residence time of the medium, the heat absorbed by the medium material during each residence time of the medium is calculated; Based on the ratio of the medium residence time to the unit time and the heat absorbed by the medium material during each medium residence time, the heat absorbed by the medium material per unit time is calculated. Based on the total heat absorbed by the medium material, the current temperature, and the target temperature, query the historical temperature difference between the temperature before and after the medium material absorbs the cooling heat generated by the medium material on the bombardment material, corresponding to the total heat absorbed by the medium material, the current temperature, and the target temperature. The flow velocity of the medium in the pipeline is calculated using the following formula: Q 吸 =ηCρSv*ΔT Among them, Q 吸 The value represents the heat absorbed by the medium material per unit time; C represents the specific heat capacity of the medium material; ρ represents the density of the medium material; ΔT represents the historical temperature difference between the temperature before and after the medium material absorbs the total heat absorbed by the medium material, the current temperature, and the target temperature to generate cooling and heating heat for the spring card material; v represents the flow velocity of the medium material in the pipeline; η represents the efficiency coefficient. By calculating the flow velocity of the medium material in the pipeline, the pump power of the medium material pump that matches the flow velocity is determined. The medium material pump is used to blow the medium material into the cooling and heating generator according to the determined pump power so that the medium material absorbs the heat generated by the cooling and heating generator, or blows the absorbed heat into the space where the cooling and heating system is located to exchange heat with the space where the cooling and heating system is located. The first refrigeration and heating equipment is controlled to operate based on the running time, the driving cycle of the cartridge material, and the pump power.

4. The system according to claim 1, characterized in that, The controller is also specifically used for: Obtain the coefficient of performance of the spring clip material used in the first refrigeration and heating equipment, the driving cycle coefficient of the driving cycle of the spring clip material, and the flow velocity coefficient of the medium material in the pipeline; The actual flow velocity of the medium material in the pipeline and the length of the pipeline are obtained; Based on the actual flow velocity of the medium material in the pipeline and the length of the pipeline, the actual residence time of the medium material in the pipeline is calculated. Calculate the first ratio between the actual flow velocity of the medium material in the pipeline and the flow velocity of the medium material in the pipeline; The loading and unloading times within the driving cycle of the cartridge material are obtained, and the actual driving cycle of the cartridge material is calculated using the actual dwell time, loading time, and unloading time. Calculate the second ratio of the actual driving cycle to the driving cycle of the bullet card material; The cooling and heating index of the target cooling and heating equipment is calculated using the following formula: Cooling and heating index = Coefficient of performance (COP) + K1 * First ratio + K2 * Second ratio Among them, K1 and K2 are preset values; The calculated cooling and heating index is displayed.

5. The system according to claim 1, characterized in that, Also includes: Second refrigeration and heating equipment; The controller is connected to the second cooling and heating device; wherein the spring clips used in the first cooling and heating device and the second cooling and heating device are made of different materials, which makes the cooling and heating power of the first cooling and heating device and the second cooling and heating device different in different temperature ranges; The controller is also specifically used for: When the cooling capacity is less than the cooling capacity threshold, the number of spring card material units that the first cooling and heating device needs to open is determined from the pre-set correspondence between the cooling capacity and the number of spring card material units opened. Based on the cooling and heating capacity, the operating time of the first cooling and heating device corresponding to the cooling and heating capacity and the driving cycle of the spring card material unit in the first cooling and heating device are determined. The solenoid valve controlling the number of the spring-loaded material units in the first refrigeration and heating equipment is opened, and the spring-loaded material units controlling the number of spring-loaded material units operate according to the determined running time and driving cycle.

6. A cooling and heating method, used to perform the function of a controller in the cooling and heating system according to any one of claims 1-5, characterized in that, The method includes: Obtain control commands, which carry the current temperature and the target temperature; Determine the temperature difference between the current temperature and the target temperature, and determine the cooling and heating capacity of the first cooling and heating device based on the temperature difference; Based on the determined cooling and heating capacity, the operating time of the first cooling and heating device and the driving cycle of the spring clip material in the first cooling and heating device are determined, and the first cooling and heating device is controlled to work according to the operating time and the driving cycle.

7. The method according to claim 6, characterized in that, The step of determining the operating time of the first refrigeration and heating device and the driving cycle of the spring clip material in the first refrigeration and heating device based on the determined cooling and heating capacity, and controlling the first refrigeration and heating device to operate according to the operating time and the driving cycle, includes: Determine the driving frequency of the spring-loaded material corresponding to the cooling and heating capacity; The driving cycle of the card material is obtained based on the driving frequency of the card material, wherein a single driving cycle includes: loading time, first waiting time, unloading time and second waiting time; Obtain the unit mass cooling and heating power ratio of the spring clip material used in the first cooling and heating equipment and the mass of the spring clip material; The cooling power of the spring-loaded material is calculated using the following formula: Cooling power of the cartridge material = cooling / heating power ratio per unit mass * driving frequency of the cartridge material * mass of the cartridge material; Based on the cooling and heating capacity and the calculated cooling power of the spring card material, the operating time of the first cooling and heating equipment is determined. Based on the determined operating time and the driving cycle of the cartridge material, the first refrigeration and heating equipment is controlled to operate.

8. The method according to claim 7, characterized in that, The step of controlling the first refrigeration and heating equipment to operate based on the determined running time and the driving cycle of the cartridge material includes: The specific heat capacity, density, and cross-sectional area of ​​the pipeline through which the medium material absorbs the heat generated by the first refrigeration and heating generator during operation are obtained; wherein, the pipeline is the pipe structure in the first refrigeration and heating equipment that supplies the flow of the medium material in the refrigeration and heating generator. Find the efficiency coefficient corresponding to the specific heat capacity, density, and cross-sectional area of ​​the pipeline through which the medium material flows in the refrigeration / heating generator; The total heat absorbed by the medium material is calculated based on the cooling capacity and the efficiency coefficient obtained from the query. The first or second waiting time in the driving cycle of the cartridge material is defined as the medium residence time. Based on the total heat absorbed by the medium material and the residence time of the medium, the heat absorbed by the medium material during each residence time of the medium is calculated; Based on the ratio of the medium residence time to the unit time and the heat absorbed by the medium material during each medium residence time, the heat absorbed by the medium material per unit time is calculated. Based on the total heat absorbed by the medium material, the current temperature, and the target temperature, query the historical temperature difference between the temperature before and after the medium material absorbs the cooling heat generated by the medium material on the bombardment material, corresponding to the total heat absorbed by the medium material, the current temperature, and the target temperature. The flow velocity of the medium in the pipeline is calculated using the following formula: Q 吸 =ηCρSv*ΔT Among them, Q 吸 ρ represents the heat absorbed by the medium material per unit time; C represents the specific heat capacity of the medium material; ρ represents the density of the medium material; ΔT represents the historical temperature difference between the temperature before and after the medium material absorbs the total heat absorbed by the medium material, the current temperature, and the target temperature, corresponding to the temperature at which the medium material generates cooling and heating energy for the spring card material; v represents the flow velocity of the medium material in the pipeline; η represents an empirical coefficient. By calculating the flow velocity of the medium material in the pipeline, the pump power of the medium material pump that matches the flow velocity is determined. The medium material pump is used to blow the medium material into the cooling and heating generator according to the determined pump power so that the medium material absorbs the heat generated by the cooling and heating generator, or blows the absorbed heat into the space where the cooling and heating system is located to exchange heat with the space where the cooling and heating system is located. The first refrigeration and heating equipment is controlled to operate based on the running time, the driving cycle of the cartridge material, and the pump power.

9. The method according to claim 6, characterized in that, Also includes: Obtain the coefficient of performance of the spring clip material used in the first refrigeration and heating equipment, the driving cycle coefficient of the driving cycle of the spring clip material, and the flow velocity coefficient of the medium material in the pipeline; The actual flow velocity of the medium material in the pipeline and the length of the pipeline are obtained; Based on the actual flow velocity of the medium material in the pipeline and the length of the pipeline, the actual residence time of the medium material in the pipeline is calculated. Calculate the first ratio between the actual flow velocity of the medium material in the pipeline and the flow velocity of the medium material in the pipeline; The loading and unloading times within the driving cycle of the cartridge material are obtained, and the actual driving cycle of the cartridge material is calculated using the actual dwell time, loading time, and unloading time. Calculate the second ratio of the actual driving cycle to the driving cycle of the bullet card material; The cooling and heating index of the target cooling and heating equipment is calculated using the following formula: Cooling and heating index = Coefficient of performance (COP) + K1 * First ratio + K2 * Second ratio Among them, K1 and K2 are preset values; The calculated cooling and heating index is displayed.

10. The method according to claim 6, characterized in that, Also includes: When the cooling capacity is less than the cooling capacity threshold, the number of spring card material units that the first cooling and heating device needs to open is determined from the pre-set correspondence between the cooling capacity and the number of spring card material units opened. Based on the cooling and heating capacity, the operating time of the first cooling and heating device corresponding to the cooling and heating capacity and the driving cycle of the spring card material unit in the first cooling and heating device are determined. The solenoid valve controlling the number of the spring-loaded material units in the first refrigeration and heating equipment is opened, and the spring-loaded material units controlling the number of spring-loaded material units operate according to the determined running time and driving cycle.

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