Butter thermostat and storage method thereof

Abstract

The butter thermostat comprises a base unit and a cover assembly, the base unit comprises an equipment shell, a base and a butter containing inner container, a Peltier cooling system and a vacuum sealing system are installed in the equipment shell, the base is fixedly installed at the bottom of the equipment shell, and the base is fixedly installed at the bottom of the equipment shell. The Peltier cooling system and the vacuum sealing system are fixedly installed above the base, the Peltier cooling system comprises a Peltier cooling module, a radiator and a cooling fan, and the Peltier cooling module is fixedly installed at the bottom of the butter containing inner container. A thermoelectric cooling system is adopted, efficient and environment-friendly refrigeration is achieved through a semiconductor, and the humidity of a storage area is reduced in combination with vacuum system sealing equipment. The refrigerator maintains the temperature at about 10 to 15 degrees Fahrenheit lower than the ambient temperature, enabling the food or beverage to be stored under optimal conditions, thereby improving the quality and shelf life of the food or beverage.

Description

Technical Field

[0001] The present invention relates to the technical field of thermostats, and specifically to a butter thermostat and its storage method. Background Art

[0002] The optimal storage temperature and duration of food or beverages is a common topic, usually depending on personal preferences. Many people like to keep food on the kitchen countertop for easy access, usually at a higher temperature than in the refrigerator, so that products (such as butter) can remain soft, making it easier to spread or use in baking. However, as is well known, compared with food stored in the kitchen refrigerator, food placed on the room-temperature countertop has a shorter shelf life.

[0003] Food and beverages are common items in daily life that need to be properly stored to maintain their flavor and freshness. The temperature set by traditional refrigerators or coolers may cause the products to become too hard or too soft, thus reducing the quality and taste. In addition, changes in the humidity level inside traditional coolers may further affect the quality of the stored food. The cooler described in the present invention is designed specifically for food storage and can solve these problems. The present invention also includes a vacuum system that improves the sealing of the lid, reduces bacterial growth, and reduces the relative humidity to the optimal level, thereby extending the shelf life of food. Summary of the Invention

[0004] The purpose of the present invention is to provide [description missing in the original Chinese, so it's not fully translatable here], in order to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A butter thermostat includes a base unit and a lid assembly. The base unit includes an equipment housing, a base, and a butter-containing inner tank. A Peltier cooling system and a vacuum sealing system are installed inside the equipment housing. The base is fixedly installed at the bottom of the equipment housing. The Peltier cooling system and the vacuum sealing system are fixedly installed above the base. The Peltier cooling system includes a Peltier cooling module, a radiator, and a cooling fan. The Peltier cooling module is fixedly installed at the bottom of the butter-containing inner tank. The radiator is located below the Peltier cooling module. The cooling fan is located below the radiator. The lid assembly is installed above the base unit, and the base unit and the lid assembly form a sealed vacuum chamber, and the lid assembly is detachably connected to the base unit.

[0006] In the above-mentioned butter thermostat, the vacuum sealing system includes an integrated fan and a vacuum pipeline. The bottom of the integrated fan is installed above the base through a fixing plate. One end of the vacuum pipeline is connected to the integrated fan, and the other end of the vacuum pipeline is connected to one side of the top of the butter-containing inner tank. An air intake pipeline is also connected to the integrated fan, and the air intake pipeline is connected to the outside of the equipment housing.

[0007] In the above-mentioned butter thermostat, a detachable tray is placed inside the butter-containing inner tank. The bottom of the tray is embedded inside the butter-containing inner tank, and the bottom surface of the tray is in contact with the bottom surface of the butter-containing inner tank. A connecting edge is provided at the top of the tray, and a handle is fixedly installed on one side of the tray.

[0008] In the above-mentioned butter thermostat, the Peltier cooling module is made of semiconductors. The cooling surface of the Peltier cooling module is in contact with the lower bottom surface of the butter-containing inner tank, and the heating surface of the Peltier cooling module is in contact with the radiator. Heat dissipation fins are fixedly installed below the radiator, and the cooling fan is located below the heat dissipation fins. The cooling fan is fixedly installed above the base through a bracket, and heat dissipation holes are provided below the base.

[0009] In the above-mentioned butter thermostat, the lid assembly includes an arc-shaped sealing lid and a connecting part. The connecting part is located at the edge of the lower end surface of the arc-shaped sealing lid, and is fixedly connected between the connecting part and the arc-shaped sealing lid. A flexible gasket for vacuum sealing is fixedly provided on the lower surface of the connecting part.

[0010] In the above-mentioned butter thermostat, an annular installation groove for installing the lid assembly is provided on the upper surface of the base unit. A self-locking mechanism is installed in the annular installation groove. The self-locking mechanism includes locking pins evenly distributed along the annular installation groove. One side of the locking pin is located inside the annular installation groove, and a spring is installed on the other side of the locking pin. The connecting part is clamped in the annular installation groove through the locking pin.

[0011] In the above-mentioned butter thermostat, a pressure sensor for monitoring the vacuum degree is fixedly installed on one side above the butter-containing inner tank, and a power module is arranged inside the equipment housing.

[0012] In the above-mentioned butter thermostat, the base unit further includes an electronic control system. The electronic control system includes a microcontroller and a control panel. The microcontroller is located inside the equipment housing, and the control panel is located on one side above the base unit. The microcontroller is respectively connected to the control panel, the power module, the pressure sensor, the power module, the Peltier cooling system and the vacuum sealing system.

[0013] A storage method for a butter thermostat includes the following steps: S1: Place the butter on the tray inside the butter-containing inner tank, close the lid assembly, start the vacuum sealing system, and extract the air inside the butter-containing inner tank through the integrated fan and the vacuum pipeline to create a vacuum environment inside the butter-containing inner tank; S2: Start the Peltier cooling system, cool the butter holding inner tank through the Peltier cooling module to reduce the temperature inside the butter holding inner tank to the set temperature. At the same time, start the cooling fan to dissipate heat from the radiator and discharge the heat generated by the Peltier cooling module out of the device housing; S3: Set the required temperature through the control panel. After the microcontroller receives the temperature signal, it controls the working state of the Peltier cooling system to keep the temperature inside the butter holding inner tank within the set temperature range; S4: When it is necessary to take out the butter, open the lid assembly, take out the butter on the tray, close the lid assembly, and restart the vacuum sealing system to pump out the air inside the butter holding inner tank and restore the vacuum environment.

[0014] Compared with the prior art, the beneficial effects of the present invention are: Compared with the standard butter dish, the electronic cooling vacuum-sealed butter dish has significant advantages in maintaining the freshness and quality of butter. Traditional butter dishes usually consist of a simple base and a lid, and their main function is to hold butter and prevent dust and insects from entering. However, it cannot control temperature or humidity, making the butter prone to spoilage in a warm environment. The improved butter dish can maintain a constant low temperature by adopting the Peltier cooling system, greatly slowing down the oxidation and degradation process of butter. In addition, the integrated vacuum sealing system actively reduces the humidity inside the dish, further inhibiting the growth of bacteria and maintaining the texture and flavor of butter. This is in sharp contrast to ordinary butter dishes, which allow the surrounding air and moisture to freely contact the butter. The precise temperature and humidity control provided by the electronic system extend the shelf life of butter on the countertop, reduce waste, and ensure consistent product quality. These are advantages that butter dishes in the prior art do not have. The ability to maintain optimal storage conditions independently of external environmental factors is an obvious improvement in this product, differentiating it from standard passive butter storage solutions.

[0015] The present invention is designed for use on the countertop to maintain the freshness and ideal texture of food. The device uses a thermoelectric cooling system that utilizes semiconductors to achieve efficient and environmentally friendly refrigeration, and combines a vacuum system to seal the device and reduce the humidity in the storage area. The cooler maintains the temperature at about 10 to 15 degrees Fahrenheit lower than the ambient temperature, making certain foods or beverages easy to spread or mix. Its features include detachable and dishwasher-safe internal components, as well as optimized designs for high energy efficiency and low maintenance. The present invention provides a convenient and space-saving solution that can store food or beverages under optimal conditions, thereby improving their quality and shelf life. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the external structure of the present invention; Figure 3 Schematic diagram of the present invention without a tray placed Figure 4 Schematic diagram of the internal structure of the base unit of the present invention

[0017] Figure 5 For the present invention Figure 4 Top view structure schematic diagram Figure 6 Schematic diagram of the lid assembly structure of the present invention Figure 7 For the present invention Figure 3 Enlarged structure schematic diagram at position A in the present invention Figure 8 Top view structure schematic diagram of the base unit of the present invention when a tray is placed

[0018] In the figure: 1. Base unit; 2. Lid assembly; 3. Equipment housing; 4. Base; 5. Butter containing inner tank; 6. Peltier cooling module; 7. Radiator; 8. Cooling fan; 9. Integrated fan; 10. Vacuum pipeline; 11. Fixed plate; 12. Tray; 13. Heat dissipation fins; 14. Arc-shaped sealing cover; 15. Connection part; 16. Flexible gasket; 17. Annular installation groove; 18. Lock pin; 19. Spring; 20. Pressure sensor; 21. Self-locking mechanism; 22. Power module; 23. Control panel; 24. Microcontroller Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0020] Please refer to Figure 1-8 , the present invention provides a technical solution for a butter thermostat: It consists of a base unit 1 and a lid assembly 2. The base unit 1 includes an equipment housing 3, a base 4, and a butter containing inner tank 5. A Peltier cooling system and a vacuum sealing system are installed inside the equipment housing 3. The base 4 is fixedly installed at the bottom of the equipment housing 3. The Peltier cooling system and the vacuum sealing system are fixedly installed above the base 4. The Peltier cooling system includes a Peltier cooling module 6, a radiator 7, and a cooling fan 8. The Peltier cooling module 6 is fixedly installed at the bottom of the butter containing inner tank 5. The radiator 7 is located below the Peltier cooling module 6. The cooling fan 8 is located below the radiator 7. The lid assembly 2 is installed above the base unit 1, and a sealed vacuum chamber is formed between the base unit 1 and the lid assembly 2, and the lid assembly 2 is detachably connected to the base unit 1

[0021] In this embodiment, another significant advantage of the refrigerator using a thermoelectric cooling system is that such a system has almost no moving parts, so there is less mechanical wear, and it can reduce wear and fracture failures caused by mechanical vibration and stress. This in turn extends the service life of the system and also reduces the maintenance requirements. In addition, the addition of a vacuum sealing system further improves the reliability of the system, preventing corrosion or electrical short circuits caused by the accumulation of moisture and bacteria.

[0022] Furthermore, the vacuum sealing system includes an integrated fan 9 and a vacuum duct 10. The bottom of the integrated fan 9 is installed above the base 4 through a fixing plate 11. One end of the vacuum duct 10 is connected to the integrated fan 9, and the other end of the vacuum duct 10 is connected to one side of the top of the butter-containing inner tank 5. An air inlet duct is also connected to the integrated fan 9, and the air inlet duct is connected to the outside of the equipment housing 3.

[0023] In this embodiment, the integrated fan 9 sucks in external air through the air inlet duct and then discharges the air to the outside of the equipment housing 3 through the vacuum duct 10, thereby maintaining the vacuum state inside the butter-containing inner tank 5. This not only improves the sealing performance of the refrigerator but also enhances its heat preservation effect, effectively reducing the influence of the external temperature on the temperature of the butter.

[0024] Furthermore, a detachable tray 12 is placed inside the butter-containing inner tank 5. The bottom of the tray 12 is embedded inside the butter-containing inner tank 5, and the bottom surface of the tray 12 is in contact with the bottom surface of the butter-containing inner tank 5. A connecting edge is provided at the top of the tray 12, and a handle is fixedly installed on one side of the tray 12.

[0025] In this embodiment, the detachable tray 12 is convenient for taking out for cleaning or placing items. The size of this tray can accommodate one or more portions of food or beverages, and it has a non-stick surface to prevent food from adhering to the tray 12. The tray 12 can be optionally equipped with a handle for easy removal and placement into the refrigerator. The cooling effect also gives the surface of the tray 12 non-stick properties, facilitating the removal of food.

[0026] Furthermore, the Peltier cooling module 6 is made of semiconductors. The cooling surface of the Peltier cooling module 6 is in contact with the lower bottom surface of the butter-containing inner tank 5, and the heating surface of the Peltier cooling module 6 is in contact with the radiator 7. A heat dissipation fin 13 is fixedly installed below the radiator 7, and the cooling fan 8 is located below the heat dissipation fin 13. The cooling fan 8 is fixedly installed above the base 4 through a bracket, and heat dissipation holes are provided below the base 4.

[0027] In this embodiment, another significant advantage of the refrigerator using a thermoelectric cooling system is that such a system has almost no moving parts, so there is less mechanical wear, and it can reduce wear and fracture failures caused by mechanical vibration and stress. This in turn extends the service life of the system and also reduces the maintenance requirements. In addition, the addition of a vacuum sealing system further improves the reliability of the system and prevents corrosion or electrical short circuits caused by the accumulation of moisture and bacteria.

[0028] Further, the lid assembly 2 includes an arc-shaped sealing cover 14 and a connecting portion 15. The connecting portion 15 is located at the edge of the lower end surface of the arc-shaped sealing cover 14, and is fixedly connected between the connecting portion 15 and the arc-shaped sealing cover 14. A flexible gasket 16 for vacuum sealing is fixedly provided on the lower surface of the connecting portion 15.

[0029] In this embodiment, the arc-shaped sealing cover 14 can be transparent, translucent or opaque, and 14 can also be disassembled and placed in a dishwasher for cleaning, making it more convenient for users to view the state of the butter or perform cleaning. In addition, the addition of the flexible gasket 16 not only enhances the sealing effect, but also helps prevent external air, moisture and bacteria from entering the interior of the refrigerator, thus maintaining the freshness and safety of the butter.

[0030] Further, an annular mounting groove 17 for mounting the lid assembly 2 is provided on the upper surface of the base unit 1. A self-locking mechanism 21 is installed in the annular mounting groove 17. The self-locking mechanism 21 includes locking pins 18 evenly distributed along the annular mounting groove 17. One side of the locking pin 18 is located in the annular mounting groove 17, and a spring 19 is installed on the other side of the locking pin 18. The connecting portion 15 is snap-fitted into the annular mounting groove 17 through the locking pin 18.

[0031] In this embodiment, the locking pin 18 can contract inward when subjected to an external force and automatically reset under the elastic force of the spring 19 after the external force is withdrawn, so as to realize the stable installation and convenient disassembly of the lid assembly 2. The design of this self-locking mechanism 21 not only improves the operation convenience, but also effectively prevents the lid assembly 2 from accidentally falling off during use, further enhancing the safety and reliability of the system. In addition, the annular mounting groove 17 not only provides a stable installation foundation for the self-locking mechanism 21, but also makes the connection between the lid assembly 2 and the base unit 1 closer, thereby improving the overall sealing effect.

[0032] Further, a pressure sensor 20 for monitoring the vacuum degree is fixedly installed on one side above the butter containing inner tank 5, and a power supply module 22 is arranged inside the equipment housing 3.

[0033] In this embodiment, the pressure sensor 20 can monitor the vacuum degree inside the butter storage inner container 5 in real time and transmit the monitoring data to an external display device or a control system so that the user can understand the vacuum state inside the inner container at any time. When the vacuum degree is lower than the preset value, the control system can automatically trigger an alarm or execute corresponding protection measures to ensure the quality and stability of the butter during constant-temperature storage. In addition, the power supply module 22 provides a stable power supply for the entire device to ensure the normal operation of each component.

[0034] Furthermore, the base unit 1 further includes an electronic control system. The electronic control system includes a microcontroller 24 and a control panel 23. The microcontroller 24 is located inside the device housing 3, and the control panel 23 is located on one side above the base unit 1. The microcontroller 24 is respectively connected to the control panel 23, the power supply module 22, the pressure sensor 20, the power supply module 22, the Peltier cooling system, and the vacuum sealing system.

[0035] In this embodiment, the microcontroller 24 serves as the core of the entire electronic control system, responsible for receiving user instructions from the control panel 23 and coordinating the work of each module according to the instructions. The user can set parameters such as the required constant-temperature and vacuum degree through the control panel 23. After receiving these set values, the microcontroller 24 will monitor the vacuum degree information feedback by the pressure sensor 20 and the working states of the Peltier cooling system and the vacuum sealing system in real time to ensure that the butter is in the best state during constant-temperature storage.

[0036] A storage method for a butter thermostat includes the following steps: S1: Place the butter on the tray 12 inside the butter storage inner container 5, close the lid assembly, start the vacuum sealing system, and extract the air inside the butter storage inner container 5 through the integrated fan 9 and the vacuum pipeline 10 to create a vacuum environment inside the butter storage inner container 5; S2: Start the Peltier cooling system, cool the butter storage inner container 5 through the Peltier cooling module 6 to reduce the temperature inside the butter storage inner container 5 to the set temperature. At the same time, start the cooling fan 8 to dissipate heat from the radiator 7 and discharge the heat generated by the Peltier cooling module 6 from the device housing; S3: Set the required temperature through the control panel 23. After the microcontroller 24 receives the temperature signal, it controls the working state of the Peltier cooling system to keep the temperature inside the butter storage inner container 5 within the set temperature range; S4: When the butter needs to be taken out, open the lid assembly, take out the butter on the tray 12, close the lid assembly, restart the vacuum sealing system, extract the air inside the butter storage inner container 5, and restore the vacuum environment.

[0037] Working principle: The working principle of the butter thermostat is mainly based on the synergistic effect of the thermoelectric cooling system and the vacuum sealing system. The thermoelectric cooling system, especially the Peltier cooling module, realizes the refrigeration function through the thermoelectric effect of semiconductor materials. When an electric current passes through the refrigerating surface of the Peltier cooling module, the module absorbs heat and generates a cooling effect, thereby reducing the temperature inside the butter storage inner tank 5. This process is efficient and environmentally friendly because it does not rely on traditional refrigerants, but directly converts electrical energy into heat transfer.

[0038] At the same time, the vacuum sealing system extracts the air inside the butter storage inner tank 5 through the integrated fan 9 and the vacuum pipeline 10 to form a vacuum environment. The vacuum state not only helps to maintain the low temperature inside the refrigerator, but also effectively prevents external air, moisture and bacteria from entering, thereby extending the shelf life of the butter and maintaining its freshness.

[0039] During operation, the user can set the desired constant temperature through the control panel 23. The microcontroller 24, as the core of the electronic control system, receives these set values and monitors the working status of the Peltier cooling system and the vacuum sealing system in real time. When the temperature inside the inner tank deviates from the set range, the microcontroller 24 adjusts the working power of the Peltier cooling system to ensure that the temperature is maintained within the set range. At the same time, the pressure sensor 20 monitors the vacuum degree inside the inner tank in real time. Once the vacuum degree is lower than the preset value, the system will trigger an alarm or take corresponding protective measures.

[0040] In addition, the butter thermostat also has the characteristics of being easy to clean and maintain. The detachable tray 12 is designed so that the user can easily take out the tray 12 for cleaning, and the arc-shaped sealing cover can also be detached and put into the dishwasher for cleaning. These designs not only improve the hygiene of the device, but also facilitate the daily use of the user.

[0041] In summary, the butter thermostat provided by the present invention combines the advantages of the thermoelectric cooling system and the vacuum sealing system to achieve precise constant temperature storage and preservation of foods such as butter. This device not only has the characteristics of high efficiency, environmental friendliness, easy cleaning and maintenance, but also can effectively extend the shelf life of foods and maintain their freshness, bringing great convenience to the daily life of users.

[0042] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A butter thermostat, comprising a base unit (1) and a lid assembly (2), characterized in that: The base unit (1) includes an equipment housing (3), a base (4), and a butter-containing inner tank (5). A Peltier cooling system and a vacuum sealing system are installed inside the equipment housing (3). The base (4) is fixedly installed at the bottom of the equipment housing (3). The Peltier cooling system and the vacuum sealing system are fixedly installed above the base (4). The Peltier cooling system includes a Peltier cooling module (6), a radiator (7), and a cooling fan (8). The Peltier cooling module (6) is fixedly installed at the bottom of the butter-containing inner tank (5). The radiator (7) is located below the Peltier cooling module (6). The cooling fan (8) is located below the radiator (7). The lid assembly (2) is installed above the base unit (1), and the base unit (1) and the lid assembly (2) form a sealed vacuum chamber, and the lid assembly (2) is detachably connected to the base unit (1).

2. The butter thermostat according to claim 1, characterized in that, The vacuum sealing system includes an integrated fan (9) and a vacuum pipe (10). The bottom of the integrated fan (9) is installed above the base (4) through a fixing plate (11). One end of the vacuum pipe (10) is connected to the integrated fan (9), and the other end of the vacuum pipe (10) is connected to one side of the top of the butter-containing inner tank (5). An air inlet pipe is also connected to the integrated fan (9), and the air inlet pipe is connected to the outside of the equipment housing (3).

3. The butter thermostat according to claim 2, characterized in that, A detachable tray (12) is placed inside the butter-containing inner tank (5). The bottom of the tray (12) is embedded inside the butter-containing inner tank (5), and the bottom surface of the tray (12) is in contact with the bottom surface of the butter-containing inner tank (5). A connecting edge is provided at the top of the tray (12), and a handle is fixedly installed on one side of the tray (12).

4. The butter thermostat according to claim 3, characterized in that, The Peltier cooling module (6) is made of a semiconductor. The cooling surface of the Peltier cooling module (6) is in contact with the lower bottom surface of the butter-containing inner tank (5). The heating surface of the Peltier cooling module (6) is in contact with the radiator (7). Heat dissipation fins (13) are fixedly installed below the radiator (7). The cooling fan (8) is located below the heat dissipation fins (13). The cooling fan (8) is fixedly installed above the base (4) through a bracket. Heat dissipation holes are provided below the base (4).

5. A butter thermostat according to claim 4, characterized in that, The lid assembly (2) includes an arc-shaped sealing cover (14) and a connecting part (15). The connecting part (15) is located at the edge of the lower end surface of the arc-shaped sealing cover (14), and the connecting part (15) is fixedly connected to the arc-shaped sealing cover (14). A flexible gasket (16) for vacuum sealing is fixedly provided on the lower surface of the connecting part (15).

6. The butter thermostat according to claim 5, characterized in that, The upper surface of the base unit (1) is provided with an annular mounting groove (17) for mounting the lid assembly (2). A self-locking mechanism (21) is installed in the annular mounting groove (17). The self-locking mechanism (21) includes locking pins (18) evenly distributed along the annular mounting groove (17). One side of the locking pin (18) is located in the annular mounting groove (17), and a spring (19) is installed on the other side of the locking pin (18). The connecting part (15) is clamped in the annular mounting groove (17) through the locking pin (18).

7. A butter thermostat according to claim 6, characterized in that, A pressure sensor (20) for monitoring the vacuum degree is fixedly installed on one side above the butter containing inner tank (5). A power supply module (22) is arranged inside the equipment housing (3).

8. A butter thermostat according to claim 7, characterized in that, The base unit (1) further includes an electronic control system. The electronic control system includes a microcontroller (24) and a control panel (23). The microcontroller (24) is located inside the equipment housing (3), and the control panel (23) is located on one side above the base unit (1). The microcontroller (24) is respectively connected to the control panel (23), the power supply module (22), the pressure sensor (20), the power supply module (22), the Peltier cooling system, and the vacuum sealing system.

9. A storage method of a butter thermostat according to any one of claims 1-8, characterized in that Including the following steps: S1: Place the butter on the tray inside the butter containing inner tank, close the lid assembly, start the vacuum sealing system, and extract the air inside the butter containing inner tank through the integrated fan and vacuum pipeline to create a vacuum environment inside the butter containing inner tank; S2: Start the Peltier cooling system, cool the butter containing inner tank through the Peltier cooling module to reduce the temperature inside the butter containing inner tank to the set temperature. At the same time, start the cooling fan to dissipate heat from the radiator and discharge the heat generated by the Peltier cooling module from the equipment housing; S3: Set the required temperature through the control panel. After the microcontroller receives the temperature signal, it controls the working state of the Peltier cooling system to keep the temperature inside the butter containing inner tank within the set temperature range; S4: When the butter needs to be taken out, open the lid assembly, take out the butter on the tray, close the lid assembly, restart the vacuum sealing system, extract the air inside the butter containing inner tank, and restore the vacuum environment.

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