Kelp freeze-drying device

Abstract

The kelp freeze-drying device comprises a drying box, a first refrigerating unit, a vacuum pump set and an infrared radiation heating plate are arranged in the drying box, a temperature sensor and a vacuum sensor are arranged in the drying box, and a steam exhaust groove is formed in the bottom of the drying box; a water catching shell is fixedly connected to the upper surface of the drying box, a condensing coil is arranged in the water catching shell, a second refrigerating unit is arranged on the upper surface of the drying box, the second refrigerating unit communicates with the condensing coil, and blowing pipes which are annularly arranged are embedded in the upper surface of the water catching shell; and the output end of the air blowing pipe is laterally arranged. According to the device, through cooperation of the fan, the air delivery pipe and the air blowing pipe, the air delivery pipe can blow air into the air blowing pipe through work of the fan, the air blowing pipe can blow air into the water catching shell, and therefore the flowing speed of water vapor is increased, the water vapor can make contact with the condensing coil more quickly, and the water catching speed is further increased.

Description

Technical Field

[0001] This application relates to the field of food processing equipment technology, and in particular to a kelp freeze-drying device. Background Technology

[0002] In the process of kelp processing, freeze drying is an advanced dehydration method. Compared with traditional methods such as hot air drying, sun drying, or oven drying, it can better preserve the nutrients, natural color, and original taste of kelp. Freeze drying freezes kelp at low temperatures and then allows the ice to sublimate directly into water vapor in a vacuum environment, avoiding the damage of high temperatures to the kelp cell structure, thereby maximizing the preservation of its original texture and flavor.

[0003] Current freeze-drying equipment suffers from inefficient water vapor capture systems, resulting in the inability to capture large amounts of water vapor in a timely manner. This not only affects drying efficiency but may also lead to icing inside the equipment, damaging components. To address these issues, we propose a kelp freeze-drying device. Utility Model Content

[0004] The purpose of this application is to provide a kelp freeze-drying device that solves the problem that current freeze-drying devices have low efficiency in water vapor capture systems, resulting in a large amount of water vapor that cannot be captured in time, affecting drying efficiency and potentially causing ice formation inside the equipment and damaging equipment components.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A kelp freeze-drying device includes a drying chamber. The drying chamber contains a first refrigeration unit, a vacuum pump unit, and an infrared radiation heating plate. A temperature sensor and a vacuum sensor are also installed inside the drying chamber. A steam vent is provided at the bottom of the drying chamber. A water-catching shell is fixedly connected to the upper surface of the drying chamber. A condensing coil is installed inside the water-catching shell. A second refrigeration unit is installed on the upper surface of the drying chamber and is connected to the condensing coil. A ring of air-blowing pipes is embedded in the upper surface of the water-catching shell, with the output ends of the air-blowing pipes being lateral. The input ends of a group of air-blowing pipes are connected to a gas supply pipe. A fan is connected to the outer surface of the gas supply pipe via a connecting pipe.

[0007] In a further embodiment, the vacuum pump assembly includes a multi-stage Roots pump and a rotary vane pump.

[0008] In a further embodiment, the exterior of the drying oven is provided with a heat insulation layer, which is made of polyurethane foam.

[0009] In a further embodiment, a conical guide tube is fixedly connected to the upper surface of the drying chamber, and the conical guide tube is coaxially arranged with the exhaust trough.

[0010] In a further embodiment, the outer surface of the water-catching shell is connected to a drain pipe, and the outer surface of the drain pipe is connected to a control valve.

[0011] In a further embodiment, the interior of the drying oven is provided with an L-shaped carrier plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This application utilizes a combination of a fan, an air supply pipe, and a blower pipe. The fan blows air into the blower pipe, which in turn blows air into the water-catching shell, thereby accelerating the flow of water vapor and allowing it to contact the condenser coil more quickly, further increasing the water-catching speed. The conical guide tube guides the water vapor outside the condenser coil after it melts into water, preventing water from entering the drying chamber from the exhaust trough.

[0014] The infrared radiation heating plate can evenly radiate heat to the kelp, promoting water sublimation and facilitating the drying of the kelp. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a kelp freeze-drying device.

[0016] Figure 2 This is a three-dimensional structural schematic diagram of the drying chamber of a kelp freeze-drying device, shown in a cross-section.

[0017] Figure 3 This is a three-dimensional structural schematic diagram of the water-capturing shell of a kelp freeze-drying device.

[0018] In the diagram: 1. Drying oven; 2. Water trap; 3. Fan; 4. Connecting pipe; 5. Gas supply pipe; 6. Air blowing pipe; 7. Second refrigeration unit; 8. Insulation layer; 9. First refrigeration unit; 10. L-shaped carrier plate; 11. Exhaust trough; 12. Vacuum pump unit; 13. Control valve; 14. Drain pipe; 15. Condensate coil; 16. Conical guide tube; 17. Infrared radiation heating plate. Detailed Implementation

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 In this utility model, a kelp freeze-drying device includes a drying chamber 1. The drying chamber 1 is equipped with a first refrigeration unit 9, a vacuum pump unit 12, and an infrared radiation heating plate 17. The drying chamber 1 is equipped with a temperature sensor and a vacuum sensor. The temperature sensor monitors the temperature change of the kelp in real time and feeds the data back to the intelligent control system to ensure that the temperature of the kelp is uniform during the pre-freezing process, forming a fine and uniform ice crystal structure, which is beneficial to the subsequent drying work. The vacuum pump unit 12 includes a multi-stage Roots pump and a rotary vane pump. The vacuum pump unit 12 adopts a combination of multi-stage Roots pump and rotary vane pump, which can quickly reduce the pressure in the drying chamber 1 to the required vacuum level. The vacuum level is monitored and fed back in real time by the vacuum level sensor to ensure that the vacuum level is stable within the set range. The infrared radiation heating plate 17 can radiate heat evenly to the kelp to promote water sublimation.

[0022] The drying chamber 1 is equipped with an L-shaped carrier plate 10, which can be used to place kelp. The L-shaped carrier plate 10 has good thermal conductivity and air permeability, ensuring that the kelp is heated evenly during the drying process.

[0023] The drying chamber 1 is equipped with an insulation layer 8, which is made of polyurethane foam. The insulation layer 8 can keep the inside of the drying chamber 1 warm, which is beneficial for the freeze drying of kelp.

[0024] The bottom of the drying chamber 1 is provided with a steam vent 11, and a water trap 2 is fixedly connected to the upper surface of the drying chamber 1. A condenser coil 15 is installed inside the water trap 2. A second refrigeration unit 7 is installed on the upper surface of the drying chamber 1, and the second refrigeration unit 7 is connected to the condenser coil 15. The second refrigeration unit 7 can be used to cool the condenser coil 15. At the same time, the sublimated water vapor will enter the interior of the water trap 2 from the steam vent 11. When the water vapor comes into contact with the condenser coil 15, it will quickly condense into ice on its surface, thereby achieving efficient water vapor capture.

[0025] The upper surface of the water-catching shell 2 is inlaid with a ring of air-blowing pipes 6, and the output end of the air-blowing pipes 6 is set to the side. The input end of a group of air-blowing pipes 6 is connected to the air supply pipe 5. The outer surface of the air supply pipe 5 is connected to the fan 3 through the connecting pipe 4. The operation of the fan 3 can blow air into the air supply pipe 5, and the air-blowing pipes 6 will blow air into the water-catching shell 2, thereby accelerating the flow speed of water vapor and allowing water vapor to contact the condensation coil 15 more quickly, further improving the water-catching speed.

[0026] A conical guide tube 16 is fixedly connected to the upper surface of the drying chamber 1. The conical guide tube 16 is coaxially arranged with the exhaust trough 11. After the ice on the condenser coil 15 melts, it will fall to the outside of the conical guide tube 16, which can prevent water droplets from falling into the exhaust trough 11 and entering the interior of the drying chamber 1.

[0027] The outer surface of the water-catching shell 2 is connected to a drain pipe 14, and the outer surface of the drain pipe 14 is connected to a control valve 13. By opening the control valve 13, the melted ice water will be discharged out of the water-catching shell 2 along the drain pipe 14, making it convenient for staff to collect the melted water.

[0028] The working principle of this application is as follows: When in use, kelp is placed on the L-shaped carrier plate 10, and then the first refrigeration unit 9 is started to freeze the kelp. Then, the vacuum pump unit 12 is started to reduce the pressure in the drying chamber 1 to the required vacuum level. At the same time, the infrared radiation heating plate 17 can radiate heat evenly to the kelp to promote water sublimation. The sublimated water vapor will enter the water-catching shell 2 from the exhaust trough 11. At the same time, the second refrigeration unit 7 is controlled to work, and the temperature of the condenser coil 15 will drop rapidly. When the water vapor comes into contact with the condenser coil 15, it will quickly condense into ice on its surface. At the same time, the fan 3 can be controlled to work, and the air supply pipe 5 will exhaust air into the blower pipe 6. The blower pipe 6 will blow air into the water-catching shell 2, thereby accelerating the flow speed of water vapor. The water vapor will come into contact with the condenser coil 15 more quickly, further improving the water-catching speed.

[0029] Furthermore, it should be understood that 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, and 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 kelp freeze-drying apparatus, characterized in that: The equipment includes a drying chamber (1), which is equipped with a first refrigeration unit (9), a vacuum pump unit (12) and an infrared radiation heating plate (17). The drying chamber (1) is equipped with a temperature sensor and a vacuum sensor. The bottom of the drying chamber (1) is provided with an exhaust trough (11). A water trap (2) is fixedly connected to the upper surface of the drying chamber (1). A condenser coil (15) is provided inside the water trap (2). A second refrigeration unit (7) is provided on the upper surface of the drying chamber (1), and the second refrigeration unit (7) is connected to the condenser coil (15). A ring of air blowers (6) is embedded on the upper surface of the water trap (2), and the output end of the air blowers (6) is arranged laterally. The input end of a group of air blowers (6) is connected to a gas supply pipe (5). The outer surface of the gas supply pipe (5) is connected to a fan (3) through a connecting pipe (4).

2. The kelp freeze-drying apparatus according to claim 1, characterized in that: The vacuum pump assembly (12) includes a multi-stage Roots pump and a rotary vane pump.

3. The kelp freeze-drying apparatus according to claim 1, characterized in that: The drying oven (1) is provided with an insulation layer (8) on the outside, and the insulation layer (8) is made of polyurethane foam.

4. The kelp freeze-drying apparatus according to claim 1, characterized in that: A conical guide tube (16) is fixedly connected to the upper surface of the drying box (1), and the conical guide tube (16) is coaxially arranged with the exhaust trough (11).

5. The kelp freeze-drying apparatus according to claim 1, characterized in that: The outer surface of the water-catching shell (2) is connected to a drain pipe (14), and the outer surface of the drain pipe (14) is connected to a control valve (13).

6. The kelp freeze-drying apparatus according to claim 1, characterized in that: The drying oven (1) is equipped with an L-shaped carrier plate (10).

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