A solid laccase storage device

Abstract

The utility model provides a kind of solid paint enzyme storage equipment, including storage cabinet, the inside of storage cabinet is divided into cold storage, function storehouse, freezer and refrigeration storehouse from top to bottom in turn, cold storage is used for short-term storage, freezer is used for long-term storage, and low-temperature storage drawer is slidably assembled in freezer.Compared with prior art, the utility model has the beneficial effects as follows: the application constructs active, efficient humidity control system through air treatment mechanism, the moisture absorption box in the equipment is built-in multiple molecular sieve moisture absorption nets, which can actively adsorb water vapor in the air in the storehouse, combined with the circulating path composed of air pump and solenoid valve, the humidity in the cold storage and freezer can be stably controlled in the best range, to avoid humidity exceeding standard leading to paint enzyme hygroscopic caking, at the same time, air treatment mechanism can quickly start humidity compensation, significantly shorten humidity recovery period, minimize the influence of high-humidity environment on paint enzyme, and ensure the subsequent dissolution efficiency of enzyme preparation.

Description

Technical Field

[0001] This invention relates to a solid laccase storage device, belonging to the field of laccase storage. Background Technology

[0002] Solid laccase, a bio-enzyme preparation with highly efficient catalytic oxidation activity, is widely used in fields such as dyeing and printing wastewater treatment, pulp bleaching, biosensor fabrication, and antioxidant applications in the food industry. Its catalytic activity is highly dependent on the stability of its molecular structure, and temperature, humidity, oxygen concentration, and contamination are the core factors affecting the enzyme activity retention rate during solid laccase storage. Studies have shown that solid laccase can lose 30%-40% of its enzyme activity after one month of storage at room temperature (25℃). When humidity exceeds 40%, it is prone to moisture absorption and clumping (leading to a decrease in subsequent dissolution efficiency of more than 50%). Exposure to air can shorten the enzyme's half-life to 15-20 days due to oxidation. Furthermore, the introduction of dust, microorganisms, and other impurities can cause enzyme deterioration, directly affecting its application effectiveness.

[0003] Existing storage devices, such as ordinary refrigerators, rely heavily on passive dehumidification (e.g., evaporator condensation) for humidity control. This makes it difficult to precisely maintain the optimal humidity range of 30%-35%. Furthermore, the humidity recovery time after opening the door to retrieve materials is relatively long, during which the intrusion of high-humidity air can cause laccase to absorb moisture. In addition, the catalytic activity of solid laccase is extremely sensitive to impurities. Dust, microbial spores, or volatile organic compounds (such as ethanol and acetone vapors commonly found in laboratories) in the storage environment can adhere to the surface of laccase particles, potentially clogging the enzyme's active site and causing microbial growth that leads to enzyme deterioration. Existing storage devices are usually only equipped with simple dust filters, which cannot effectively remove tiny dust particles and microorganisms from the air and lack an active purification mechanism. Once a small amount of impurities is introduced during initial storage, they will continue to affect the quality of laccase in the sealed environment. Therefore, it is necessary to design a solid laccase storage device. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a solid laccase storage device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a solid laccase storage device, comprising: The storage cabinet is divided into a cold storage compartment, a functional compartment, a freezer compartment, and a refrigeration compartment from top to bottom. The cold storage compartment is used for short-term storage, and the freezer compartment is used for long-term storage. The freezer compartment is equipped with a sliding low-temperature storage drawer. The air handling unit is located inside the functional compartment, which is designed to be open at one end. The opening is secured to a baffle by bolts. The refrigeration mechanism is located inside the refrigeration chamber, and the cold output end of the refrigeration mechanism extends upward through the bottom of the freezer chamber and is in contact with the lower surface of the low-temperature storage drawer. The door is hinged to the opening of the cold storage compartment.

[0006] Furthermore, multiple sets of corresponding pull-out rails are evenly arranged on the inner walls of both sides of the cold storage compartment along the height direction. Each set of pull-out rails is slidably connected to a carrier plate. The carrier plate has a grid-like hollow structure, and the length of the carrier plate is adapted to the internal width of the cold storage compartment.

[0007] Furthermore, the air handling mechanism includes an air extraction pump, a dust removal box, a moisture absorption box, a limiting rail, a one-in-four-out solenoid valve, a one-in-two-out solenoid valve, an end plate, an activated carbon filter, a molecular sieve moisture absorption screen, and a two-in-one-out solenoid valve. An air extraction pump is installed in the center of the functional compartment, and a dust removal box and a moisture absorption box are installed in the functional compartments on either side of the air extraction pump. The air extraction end of the air extraction pump is connected to the two-in-one-out solenoid valve, and the two inlet ends of the two-in-one-out solenoid valve are respectively connected to the interior of the refrigeration compartment and the freezer compartment via conduits. The air outlet end of the air extraction pump is connected to the one-in-four-out solenoid valve, and the four outlet ends of the one-in-four-out solenoid valve... Two of the air outlets are connected to the air inlets of the impurity removal box and the moisture absorption box via conduits, respectively. The other two extend to the interior of the refrigeration compartment and the freezer compartment via conduits. Each of the air outlets of the impurity removal box and the moisture absorption box, on the side away from the air pump, is equipped with a solenoid valve with one inlet and two outlets. The two outlets of the solenoid valve are connected to the interior of the refrigeration compartment and the freezer compartment via conduits, respectively. The impurity removal box is detachably equipped with multiple activated carbon filters along the airflow direction, and the moisture absorption box is detachably equipped with multiple molecular sieve moisture-absorbing screens along the airflow direction. The ends of the molecular sieve moisture-absorbing screens and the activated carbon filters near the baffles are connected to end plates.

[0008] Furthermore, multiple sets of corresponding limiting rails are evenly arranged along the length direction at the top and bottom of the interior of the impurity removal box and the moisture absorption box. The activated carbon filter and the molecular sieve moisture absorption screen are both set as rectangular plate structures adapted to the internal size of the box. The activated carbon filter and the molecular sieve moisture absorption screen are detachably connected to the impurity removal box and the moisture absorption box respectively through the limiting rails. The inner side of each set of limiting rails is covered with silicone strips.

[0009] Furthermore, the baffle is provided with openings that match the shape of the two end plates at the corresponding positions, and the outer periphery of the end plates is provided with sealing strips. A spherical handle is fixed at the center of the end plates, and the molecular sieve moisture-absorbing mesh and activated carbon filter mesh are both snapped into the end plates.

[0010] Furthermore, temperature and humidity sensors are installed on the inner side of the door and the top of the freezer compartment, and a sealing ring is embedded in the inner edge of the door. A control panel is installed at the center of the outer side of the door, and the output end of the temperature and humidity sensor is electrically connected to the input end of the control panel through a wire.

[0011] Furthermore, the cooling mechanism includes a heat sink base, a thermoelectric cooler, a dustproof mesh, heat dissipation fins, a fan base, and a cooling fan. The thermoelectric cooler is embedded in the top of the heat sink base, and the cold end of the thermoelectric cooler is in contact with the lower surface of the low-temperature storage drawer, with thermal grease applied at the contact point. Multiple heat dissipation fins are fixed parallel to each other at equal intervals along the length of the heat sink base, and the hot end of the thermoelectric cooler is in close contact with the top of the heat dissipation fins. A fan base is fixed to the heat sink base at one end of the heat dissipation fins by bolts, and multiple cooling fans are evenly arranged in the fan base. Dustproof meshes are fixed to both ends of the heat sink base by bolts.

[0012] The beneficial effects of this utility model are: 1. This application constructs an active and efficient humidity control system through an air handling unit. The moisture absorption box in the device has multiple molecular sieve moisture absorption nets built in, which can actively absorb water vapor in the air inside the chamber. Combined with the circulation path composed of an air pump and a solenoid valve, it can stably control the humidity in the refrigerated and frozen chambers within the optimal range of 30%-35%, avoiding excessive humidity that could cause laccase to absorb moisture and clump. At the same time, the air handling unit can quickly start humidity compensation. Compared with the long humidity recovery time of ordinary refrigerators, this device can significantly shorten the humidity recovery cycle, minimize the impact of high humidity environment on laccase, and ensure the subsequent dissolution efficiency of enzyme preparations.

[0013] 2. This application achieves deep purification of the air inside the chamber through a dual purification structure of "impurity removal + moisture absorption". The multiple activated carbon filters in the impurity removal box can not only intercept tiny dust particles, but also adsorb volatile organic compounds such as ethanol and acetone commonly found in laboratories. In conjunction with the molecular sieve moisture-absorbing mesh in the moisture absorption box, microbial spores in the air are further filtered while dehumidifying. In addition, the equipment drives the air inside the chamber to circulate through the impurity removal box and the moisture absorption box through an air pump, forming an active purification path, rather than relying on passive filtration. This continuously removes impurities inside the chamber, preventing the initial small amount of impurities from accumulating in the sealed environment and affecting the quality of laccase. It effectively protects the active center of the enzyme and prevents the enzyme preparation from deteriorating due to microbial growth.

[0014] 3. This application divides the storage cabinet into a refrigerated compartment and a frozen compartment. The refrigerated compartment is used for short-term turnover storage of solid laccase, and the frozen compartment is used for long-term standby storage. The frozen compartment has a sliding low-temperature storage drawer, which realizes the partition adaptation of "short-term-long-term" storage. This design avoids the problem of existing equipment having a single temperature zone and requiring multiple additional devices. It can reduce enzyme activity loss during short-term storage by maintaining a low temperature of 4-8℃ in the refrigerated compartment, and extend the enzyme activity retention period during long-term storage by maintaining an environment of -5 to -40℃ in the frozen compartment. At the same time, it prevents the molecular structure of short-term turnover laccase from being damaged by repeated freeze-thaw cycles, thus balancing storage effect and ease of use, and reducing storage costs and space occupation. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a solid laccase storage device according to the present invention; Figure 2 This is a schematic diagram showing the disassembled structure of a solid laccase storage device according to the present invention; Figure 3 This is a schematic diagram of the air handling mechanism of a solid laccase storage device according to the present invention; Figure 4 This is a schematic diagram of the refrigeration mechanism of a solid laccase storage device according to the present invention; In the picture: 1. Storage cabinet; 101. Drawer slide; 102. Divider; 2. Door body; 201. Sealing ring; 3. Control Panel; 4. Air handling unit; 401. Air pump; 402. Impurity removal box; 403. Moisture absorption box; 4031. Limiting rail; 404. One-in-four-out solenoid valve; 405. One-in-two-out solenoid valve; 406. End plate; 4061. Handle; 407. Activated carbon filter; 408. Molecular sieve moisture absorption mesh; 409. Two-in-one-out solenoid valve; 5. Low-temperature storage drawer; 6. Refrigeration mechanism; 601. Heat sink base; 602. Semiconductor refrigeration chip; 603. Dustproof mesh; 604. Heat sink fins; 605. Fan base; 606. Cooling fan; 7. Temperature and humidity sensor; 8. Carrier plate. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] Please see Figures 1 to 4 This utility model provides a technical solution: a solid laccase storage device, including a storage cabinet 1. The interior of the storage cabinet 1 is divided into a refrigerated compartment, a functional compartment, a frozen compartment, and a cooling compartment from top to bottom. The refrigerated compartment is used for short-term storage, and the frozen compartment is used for long-term storage. A low-temperature storage drawer 5 is slidably installed in the frozen compartment. An air handling unit 4 is set in the functional compartment, which has an open end design. The opening is fixed with a baffle 102 by bolts. A cooling unit 6 is set in the cooling compartment, and the cold output end of the cooling unit 6 extends upward through the bottom of the frozen compartment and is attached to the lower surface of the low-temperature storage drawer 5. The door 2 is hinged to the open end of the refrigerated compartment. By dividing the storage cabinet 1 into compartments with different functions, the short-term and long-term storage can be managed separately to meet the needs of different storage cycles of solid laccase. The cold output end of the cooling unit 6 is directly attached to the low-temperature storage drawer 5, making the cold transfer more direct and efficient, ensuring the temperature stability in the frozen compartment, which is conducive to the long-term preservation of solid laccase. The baffle 102 at the opening of the functional compartment facilitates the inspection and maintenance of the air handling unit 4 and improves the ease of use of the equipment.

[0018] Please see Figure 2 Multiple sets of corresponding pull-out rails 101 are evenly arranged along the height direction on both sides of the inner wall of the cold storage compartment of storage cabinet 1. Each set of pull-out rails 101 is slidably connected to a carrier plate 8. The carrier plate 8 has a grid-like hollow structure, and the length of the carrier plate 8 is adapted to the internal width of the cold storage compartment. The multiple sets of pull-out rails 101, together with the sliding carrier plate 8, can flexibly adjust the number and spacing of the carrier plates 8 according to the storage volume of solid laccase, thereby improving the space utilization rate of the cold storage compartment of storage cabinet 1. The grid-like hollow structure of the carrier plate 8 allows for full air circulation in the cold storage compartment, avoids uneven local temperature, and facilitates cleaning of the carrier plate 8, reducing the risk of contamination during the storage of solid laccase.

[0019] Please see Figure 3The air handling unit 4 includes an air pump 401, a dust removal box 402, a moisture absorption box 403, a limiting rail 4031, a one-in-four-out solenoid valve 404, a one-in-two-out solenoid valve 405, an end plate 406, an activated carbon filter 407, a molecular sieve moisture absorption screen 408, and a two-in-one-out solenoid valve 409. The air pump 401 is installed in the center of the functional compartment, and the dust removal box 402 and the moisture absorption box 403 are respectively installed in the functional compartments on both sides of the air pump 401. The air pump 401 is connected to the two-in-one-out solenoid valve 409 at its suction end. The two inlets are connected to the interior of the refrigerated compartment and the frozen compartment respectively via conduits. The outlet of the air pump 401 is connected to a four-inlet solenoid valve 404. Two of the four outlets of the four-inlet solenoid valve 404 are connected to the inlets of the impurity removal box 402 and the moisture absorption box 403 respectively via conduits, while the other two extend to the interior of the refrigerated compartment and the frozen compartment respectively via conduits. A two-inlet solenoid valve 405 is installed at the outlet of the impurity removal box 402 and the moisture absorption box 403 on the side away from the air pump 401. The two outlets of the two-inlet solenoid valve 405 are connected to the refrigerated compartment via conduits. The air removal box 402 is connected to the interior of the freezer compartment. Multiple activated carbon filters 407 are detachably installed inside the box along the airflow direction. Similarly, multiple molecular sieve moisture-absorbing screens 408 are detachably installed inside the moisture-absorbing box 403 along the airflow direction. Both the molecular sieve moisture-absorbing screens 408 and the activated carbon filters 407 have end plates 406 connected to the end closest to the baffle 102. Through multi-channel control using a one-in-four-out solenoid valve 404, a one-in-two-out solenoid valve 405, and a two-in-one-out solenoid valve 409, the airflow path between the freezer compartment, the air removal box 402, and the moisture-absorbing box 403 can be flexibly switched. It can purify and dehumidify the air in any single compartment individually or simultaneously, adapting to different storage scenarios. The activated carbon filter 407 in the impurity removal box 402 can effectively remove impurities and odors from the air, while the molecular sieve moisture-absorbing mesh 408 in the moisture-absorbing box 403 can efficiently absorb moisture. This dual treatment ensures that the air inside the compartment is clean and dry, preventing the solid laccase from becoming damp or contaminated by impurities and deteriorating. The activated carbon filter 407 and the molecular sieve moisture-absorbing mesh 408 are detachable, facilitating future replacement and maintenance, reducing equipment operating costs. The two are connected by the end plate 406 for easy unified operation.

[0020] Please see Figure 3The top and bottom of the impurity removal box 402 and the moisture absorption box 403 are both uniformly provided with multiple sets of corresponding limiting rails 4031 along the length direction. The activated carbon filter 407 and the molecular sieve moisture absorption screen 408 are both set as rectangular plate structures adapted to the internal dimensions of the box. The activated carbon filter 407 and the molecular sieve moisture absorption screen 408 are detachably inserted into the impurity removal box 402 and the moisture absorption box 403 respectively through the limiting rails 4031. The inner side of each set of limiting rails 4031 is covered with a silicone strip. The design of the limiting rails 4031 in the impurity removal box 402 and the moisture absorption box 403 makes the activated carbon filter 407 and the molecular sieve moisture absorption screen 408 detachably inserted into the box 402 and the moisture absorption box 403. The installation and disassembly of the activated carbon filter 407 and the molecular sieve moisture-absorbing mesh 408 are more convenient and can be precisely positioned to ensure that the activated carbon filter 407 and the molecular sieve moisture-absorbing mesh 408 are stably placed in the box and avoid displacement caused by airflow impact. The silicone strip attached to the inner side of the limiting rail 4031 can enhance the sealing between the activated carbon filter 407, the molecular sieve moisture-absorbing mesh 408 and the impurity removal box 402 and the moisture absorption box 403, prevent unfiltered air from flowing through the gaps, improve the air treatment effect, and at the same time reduce the wear of components during assembly and extend the service life of the activated carbon filter 407 and the molecular sieve moisture-absorbing mesh 408.

[0021] Please see Figure 3 The baffle 102 has openings that match the shape of the two end plates 406 at their respective positions, and the outer periphery of the end plates 406 is provided with sealing strips. A spherical handle 4061 is fixed in the center of the end plates 406, and the molecular sieve moisture-absorbing mesh 408 and activated carbon filter 407 are both snapped into the end plates 406. The openings on the baffle 102 are adapted to the end plates 406, and together with the sealing strips on the outer periphery of the end plates 406, the sealing of the functional compartment is ensured, and the molecular sieve moisture-absorbing mesh 408 and activated carbon filter 407 can be operated directly through the end plates 406 without disassembling the entire baffle 102, simplifying the maintenance process. The spherical handle 4061 in the center of the end plates 406 is easy to grip and apply force, improving the ease of operation. The snap-fit ​​method between the molecular sieve moisture-absorbing mesh 408, activated carbon filter 407 and the end plates 406 further facilitates the quick assembly and disassembly of components, improving maintenance efficiency.

[0022] Please see Figure 2Temperature and humidity sensors 7 are installed on the inner side of the door 2 and at the top of the freezer compartment. A sealing ring 201 is embedded in the inner edge of the door 2. A control panel 3 is installed in the center of the outer side of the door 2. The output of the temperature and humidity sensors 7 is electrically connected to the input of the control panel 3 through a wire. The temperature and humidity sensors 7 on the inner side of the door 2 and at the top of the freezer compartment can monitor the temperature and humidity data of the two key storage areas in real time and display them intuitively on the control panel 3 on the outer side of the door 2. This allows operators to keep track of the storage environment status and adjust equipment parameters in a timely manner. The sealing ring 201 on the inner edge of the door 2 can enhance the airtightness of the cold storage compartment, reduce the entry of external heat and moisture, maintain a stable temperature inside the compartment, reduce the energy consumption of the refrigeration unit 6 and the air handling unit 4, and ensure the storage quality of solid laccase.

[0023] Please see Figure 4 The refrigeration mechanism 6 includes a heat sink 601, a thermoelectric cooler 602, a dust filter 603, heat dissipation fins 604, a fan base 605, and a cooling fan 606. The thermoelectric cooler 602 is embedded in the top of the heat sink 601. The cold end of the thermoelectric cooler 602 is in contact with the lower surface of the low-temperature storage drawer 5, and thermal grease is applied to the contact area. Multiple heat dissipation fins 604 are evenly spaced and parallel to each other along the length of the heat sink 601, and the hot end of the thermoelectric cooler 602 is in close contact with the top of the heat dissipation fins 604. A fan base 605 is bolted to one end of the heat sink 601 containing one end of the heat dissipation fin 604, and multiple cooling fans 606 are evenly arranged inside the fan base 605. Dust filters 603 are bolted to both ends of the heat sink 601. The thermoelectric cooler 602 in the refrigeration mechanism 6 is small in size and low in noise. Combined with thermal grease, it ensures a tighter fit between the cold end and the low-temperature storage drawer 5, resulting in high heat transfer efficiency and rapid temperature reduction of the low-temperature storage drawer 5 to meet the long-term freezing storage requirements of solid laccase. The heat dissipation fins 604 in the heat sink 601 work in conjunction with the cooling fan 606 on the fan base 605 to efficiently dissipate the heat generated by the hot end of the thermoelectric cooler 602, preventing a decrease in cooling efficiency and ensuring the long-term stable operation of the refrigeration mechanism 6. The dustproof nets 603 at both ends of the heat sink 601 prevent dust from entering and clogging the heat dissipation fins 604, reducing equipment failures and extending the service life of the heat dissipation fins 604 and the cooling fan 606. At the same time, the dustproof nets 603 are fixed with bolts for easy cleaning and replacement.

[0024] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A solid laccase storage device, characterized in that, include: The storage cabinet (1) is divided into a cold storage compartment, a functional compartment, a freezer compartment and a refrigeration compartment from top to bottom. The cold storage compartment is used for short-term storage, and the freezer compartment is used for long-term storage. The freezer compartment is equipped with a low-temperature storage drawer (5). An air handling unit (4) is located in a functional compartment, and the functional compartment is designed with an opening at one end. The opening is fixed with a baffle (102) by bolts. The refrigeration mechanism (6) is located inside the refrigeration chamber, and the cold output end of the refrigeration mechanism (6) extends upward through the bottom of the freezer chamber and fits against the lower surface of the low-temperature storage drawer (5). The door (2) is hinged to the opening of the cold storage compartment.

2. The solid laccase storage device according to claim 1, characterized in that: The storage cabinet (1) has multiple sets of corresponding pull rails (101) evenly arranged on both sides of the cold storage compartment along the height direction. Each set of pull rails (101) is slidably connected to a carrier plate (8). The carrier plate (8) has a grid hollow structure, and the length of the carrier plate (8) is adapted to the internal width of the cold storage compartment.

3. The solid laccase storage device according to claim 1, characterized in that: The air handling unit (4) includes an air pump (401), a dust removal box (402), a moisture absorption box (403), a limiting rail (4031), a one-in-four-out solenoid valve (404), a one-in-two-out solenoid valve (405), an end plate (406), an activated carbon filter (407), a molecular sieve moisture absorption screen (408), and a two-in-one-out solenoid valve (409). An air pump (401) is installed in the center of the functional compartment, and a dust removal box (402) and a moisture absorption box (403) are installed in the functional compartments on both sides of the air pump (401). The air pump (401) has a suction end connected to a two-in-one-out solenoid valve (409), and the two inlets of the two-in-one-out solenoid valve (409) are connected to the interior of the refrigeration compartment and the freezer compartment via conduits. The air pump (401) has an outlet end connected to a one-in-four-out solenoid valve (404), and the one-in-four-out solenoid valve... Of the four outlets of the solenoid valve (404), two are connected to the air inlets of the impurity removal box (402) and the moisture absorption box (403) via conduits, respectively. The other two are extended to the interior of the refrigeration compartment and the freezer compartment via conduits, respectively. A one-in-two-out solenoid valve (405) is installed at the air outlet of the impurity removal box (402) and the moisture absorption box (403) on the side away from the air pump (401). The two outlets of the one-in-two-out solenoid valve (405) are connected to the interior of the refrigeration compartment and the freezer compartment via conduits, respectively. Multiple activated carbon filters (407) are detachably installed inside the impurity removal box (402) along the airflow direction. Multiple molecular sieve moisture-absorbing screens (408) are detachably installed inside the moisture absorption box (403) along the airflow direction. An end plate (406) is connected to the end of the molecular sieve moisture-absorbing screen (408) and the activated carbon filter (407) near the baffle (102).

4. A solid laccase storage device according to claim 3, characterized in that: Multiple sets of corresponding limiting rails (4031) are evenly arranged along the length direction at the top and bottom of the interior of the impurity removal box (402) and the moisture absorption box (403). The activated carbon filter (407) and the molecular sieve moisture absorption mesh (408) are both set as rectangular plate structures adapted to the internal size of the box. The activated carbon filter (407) and the molecular sieve moisture absorption mesh (408) are detachably connected to the impurity removal box (402) and the moisture absorption box (403) respectively through the limiting rails (4031). The inner side of each set of limiting rails (4031) is covered with silicone strips.

5. A solid laccase storage device according to claim 3, characterized in that: The baffle (102) has openings that match the shape of the two end plates (406) at the corresponding positions, and the outer periphery of the end plate (406) is provided with sealing strips. A spherical handle (4061) is fixed at the center of the end plate (406), and the molecular sieve moisture-absorbing mesh (408) and the activated carbon filter mesh (407) are both snapped into the end plate (406).

6. A solid laccase storage device according to claim 1, characterized in that: Temperature and humidity sensors (7) are installed on the inner side of the door (2) and the top of the freezer compartment. A sealing ring (201) is embedded on the inner edge of the door (2). A control panel (3) is installed at the center of the outer side of the door (2). The output end of the temperature and humidity sensor (7) is electrically connected to the input end of the control panel (3) through a wire.

7. A solid laccase storage device according to claim 1, characterized in that: The refrigeration mechanism (6) includes a heat sink (601), a thermoelectric cooler (602), a dustproof net (603), heat sink fins (604), a fan base (605), and a heat dissipation fan (606). The top of the heat sink (601) is fitted with a thermoelectric cooler (602). The cold end of the thermoelectric cooler (602) is in contact with the lower surface of the low-temperature storage drawer (5), and the contact area is coated with thermal grease. Multiple heat sink fins (604) are fixed parallel to each other at equal intervals along the length direction inside the heat sink (601), and the hot end of the thermoelectric cooler (602) is in close contact with the top of the heat sink fins (604). A fan base (605) is fixed to the heat sink (601) at one end of the heat sink fins (604) by bolts, and multiple heat dissipation fans (606) are evenly arranged inside the fan base (605). Dustproof nets (603) are fixed to both ends of the heat sink (601) by bolts.

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