Heat energy circulation structure of vacuum freeze-drying equipment

Abstract

The utility model provides a vacuum freeze -drying equipment's heat energy circulation structure has solved the unreasonable problem of freeze -drying machine energy utilization of current. Still include the heat insulating board, set up in the inner chamber of cabinet and divide the inner chamber of cabinet and present cavity and rear cavity, and the refrigeration assembly is located the rear cavity of cabinet, and the vacuum pump is linked together with the front cavity of cabinet, freeze -drying partition, set up in the front cavity of cabinet, heat energy collection subassembly, set up in the rear cavity of cabinet and are connected with freeze -drying partition, no. The one end is connected with refrigeration assembly, and the other end is located the front cavity of cabinet. Start refrigeration assembly, and cold air enters the front cavity of cabinet through no. Freeze -drying partition on the article and freeze, then start vacuum pump again, and the front cavity of cabinet carries out the vacuumizing treatment, and then under the heat dissipation of condenser, heat energy collection subassembly will collect the heat energy of cabinet rear cavity and transport to freeze -drying partition and heat it to provide the required heat for the sublimation of ice crystal, realize heat energy recycling.

Description

Technical Field

[0001] This utility model relates to the field of freeze dryer technology, specifically to the thermal energy circulation structure of vacuum freeze drying equipment. Background Technology

[0002] Freeze-drying (Vacuum freeze-drying) is an advanced technology that dehydrates water-containing materials in a low-temperature vacuum environment to obtain high-quality dried products. This technology can retain the original components, properties, and biological activities of materials to the greatest extent, and is widely used in high-value-added fields such as pharmaceuticals, food, and biological products.

[0003] Current freeze dryers are essentially operating by simultaneously cooling and dissipating heat while consuming electricity for heating. The high-quality, low-temperature heat generated by the refrigeration system is wasted, while the heating system requires additional energy. This energy utilization method is highly inefficient, leading to high operating costs, low energy efficiency, and is inconsistent with the current trend towards green and low-carbon industrial development.

[0004] Therefore, we proposed a thermal energy circulation structure for vacuum freeze-drying equipment to address the problems mentioned above. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this utility model provides a thermal energy circulation structure for a vacuum freeze-drying device, which solves the problem of unreasonable energy utilization in existing freeze dryers.

[0006] The technical solution adopted in this utility model is as follows: The thermal energy circulation structure of the vacuum freeze-drying equipment includes a cabinet, the cabinet being connected to a refrigeration component and a vacuum pump, and further includes: A heat insulation board is installed inside the cabinet and divides the cabinet's interior into a front cavity and a rear cavity. The refrigeration component is located in the rear cavity of the cabinet, and the vacuum pump is connected to the front cavity of the cabinet. A freeze-drying partition is installed in the front cavity of the cabinet, and the interior of the freeze-drying partition has a hollow structure. A heat collection component is installed in the rear cavity of the cabinet and connected to the freeze-drying partition. One end of the No. 1 connecting pipe is connected to the refrigeration unit, and the other end is located in the front cavity of the cabinet; The water collection assembly is located at the bottom of the freeze-drying partition and communicates with the inner cavity of the freeze-drying partition.

[0007] The heat collection assembly includes a heat collection block, on which several heat collection tubes are installed. A second connecting pipe connects the heat collection block to the freeze-drying partition. The inner cavity of the freeze-drying partition is provided with a heat-conducting pipe for communicating with the second connecting pipe.

[0008] Several of the aforementioned heat collection tubes are arranged linearly from top to bottom.

[0009] Adjacent heat pipes are arranged in an "S" shape.

[0010] The water collection assembly includes a No. 3 connecting pipe that runs through the bottom of the inner cavity of the freeze-drying partition. The No. 3 connecting pipe is connected to a collection tank, and an absorbent pad is installed at the bottom of the inner cavity of the collection tank.

[0011] The freeze-drying partition has an inclined guide plate at the bottom of its inner cavity, and the water collection assembly is located at the lowest point of the guide plate.

[0012] The cabinet is equipped with a PLC controller at the front, a support plate for supporting the vacuum pump on the side, and an exhaust pipe for communicating with the rear cavity of the cabinet at the rear.

[0013] The beneficial effects of this utility model are: The refrigeration unit is activated, and cold air enters the front cavity of the cabinet through the No. 1 connecting pipe to freeze the items on the freeze-drying shelf. Then, the vacuum pump is activated to evacuate the front cavity of the cabinet. Subsequently, under the heat dissipation of the condenser, the heat collection unit collects the heat energy from the rear cavity of the cabinet and transfers it to the freeze-drying shelf to heat it, providing the heat required for the sublimation of ice crystals. This achieves heat energy recycling, which can significantly reduce the total amount of waste heat emitted into the environment and reduce the impact of equipment operation on the surrounding environment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the overall three-dimensional structure of this utility model from another perspective; Figure 3 This is a schematic diagram of the internal structure of the cabinet of this utility model; Figure 4 This is a three-dimensional structural diagram of the heat energy harvesting component of this utility model; Figure 5 This is a three-dimensional structural diagram of the water collection component of this utility model.

[0015] Cabinet 1, Refrigeration Components 2, Vacuum Pump 3, Insulation Board 4, Freeze-drying Partition 5, Heat Collection Components 6, Heat Collector Block 61, Heat Collector Pipe 62, No. 2 Connecting Pipe 63, Heat Conducting Pipe 64, No. 1 Connecting Pipe 7, Water Collection Components 8, No. 3 Connecting Pipe 81, Water Absorbent Pad 82, Collection Tank 83, Guide Plate 9, PLC Controller 10, Support Plate 11, Exhaust Pipe 12. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: In the embodiments, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the thermal energy circulation structure of the vacuum freeze-drying equipment includes a cabinet 1, which is connected to a refrigeration component 2 and a vacuum pump 3, and also includes: The heat insulation board 4 is installed inside the cabinet 1 and divides the inner cavity of the cabinet 1 into a front cavity and a rear cavity. The refrigeration component 2 is located in the rear cavity of the cabinet 1, and the vacuum pump 3 is connected to the front cavity of the cabinet 1. Freeze-drying partition 5 is disposed in the front cavity of cabinet 1, and the interior of freeze-drying partition 5 is hollow. The heat collection component 6 is installed in the rear cavity of the cabinet 1 and connected to the freeze-drying partition 5; One end of the No. 1 connecting pipe 7 is connected to the refrigeration component 2, and the other end is located in the front cavity of the cabinet 1; Water collection assembly 8 is located at the bottom of freeze-drying partition 5.

[0017] The refrigeration component 2 consists of a compressor, condenser, evaporator, and expansion valve. The vacuum pump 3 can be an Edwards EX series dry vacuum pump. When the refrigeration component 2 is started, cold air enters the front cavity of the cabinet 1 through the first connecting pipe 7 to freeze the items on the freeze-drying partition 5. Then, the vacuum pump 3 is started to evacuate the front cavity of the cabinet 1. Subsequently, under the heat dissipation of the condenser, the heat collection component 6 collects the heat energy of the rear cavity of the cabinet 1 and transports it to the freeze-drying partition 5 to heat it, providing the heat required for the sublimation of ice crystals. This achieves heat energy recycling, which can significantly reduce the total amount of waste heat emitted into the environment and reduce the impact of equipment operation on the surrounding environment.

[0018] In the embodiments, such as Figure 3 , Figure 4 As shown, the heat collection component 6 includes a heat collection block 61, on which several heat collection tubes 62 are installed. A second connecting pipe 63 connects the heat collection block 61 to the freeze-drying partition 5. The inner cavity of the freeze-drying partition 5 is provided with a heat-conducting pipe 64 for communicating with the second connecting pipe 63. The heat collection block 61 can be made of copper-aluminum alloy. The heat collection block 61 and the condenser can be directly contacted by thermally conductive silicone, or the heat collection block 61 can directly collect the heat energy from the rear cavity of the cabinet 1. The heat collection block 61 and the heat collection tubes 62 form a high-efficiency heat recovery system, which can recover the waste heat generated by the refrigeration component 2 and directly use it to heat the freeze-drying partition 5, reducing additional energy consumption.

[0019] In the embodiments, such as Figure 3 , Figure 4 As shown, several of the heat collection tubes 62 are arranged linearly from top to bottom. This allows for better collection of heat energy.

[0020] In the embodiments, such as Figure 4As shown, adjacent heat pipes 64 are arranged in an "S" shape. This allows heat to be evenly distributed onto the freeze-drying partition 5, ensuring the quality of food drying.

[0021] In the embodiments, such as Figure 4 , Figure 5 As shown, the water collection assembly 8 includes a No. 3 connecting pipe 81 that penetrates the bottom of the inner cavity of the freeze-drying partition 5. The No. 3 connecting pipe 81 is connected to a collection tank 83, and an absorbent pad 82 is installed at the bottom of the inner cavity of the collection tank 83. The No. 3 connecting pipe 81 and the collection tank 83 are threaded together. The collection tank 83 is easy to disassemble and clean, and the absorbent pad 82 is easy to replace (the absorbent pad 82 can be made of polypropylene fiber, which has strong corrosion resistance).

[0022] In the embodiments, such as Figure 4 , Figure 5 As shown, the bottom of the inner cavity of the freeze-drying partition 5 is provided with an inclined guide plate 9, and the water collection assembly 8 is located at the lowest point of the guide plate 9. This facilitates all the water in the freeze-drying partition 5 to flow into the collection tank 83, preventing water residue or accumulation in the freeze-drying partition 5.

[0023] In the embodiments, such as Figure 1 , Figure 2 As shown, a PLC controller 10 is installed at the front of the cabinet 1, a support plate 11 for supporting the vacuum pump 3 is provided on the side, and an exhaust pipe 12 for communicating with the rear cavity of the cabinet 1 is provided at the rear. The exhaust pipe 12 is equipped with a valve, which can dissipate heat and ventilate the rear cavity of the cabinet 1 to ensure the life of the refrigeration component 2.

[0024] Working principle: Place the items to be freeze-dried on the freeze-drying shelf 5, and then close the sealing door 11. Start the refrigeration unit 2 via PLC controller 10, and introduce cold air through the first connecting pipe 7, allowing the cold air to enter the front cavity of the cabinet 1 to freeze the items on the freeze-drying shelf 5. Next, start the vacuum pump 3 using PLC controller 12 to evacuate the front cavity of the cabinet 1. Subsequently, under the heat dissipation of the condenser, the heat collector 61, heat collector pipe 62, second connecting pipe 63, and heat conduction pipe 64 together heat the freeze-drying shelf 5. Simultaneously, the vacuum pump 3 extracts the water vapor generated during heating and sends it to the external freeze collection box for freezing.

[0025] When the freeze-drying partition 5 is used for a long time, the heat inside the freeze-drying partition 5 will liquefy into water droplets due to the low temperature inside the cabinet 1. The water droplets will adhere to the inner cavity of the freeze-drying partition 5 and drip onto the guide plate 9. By setting the water collection component 8, the water droplets in the inner cavity of the freeze-drying partition 5 can be effectively collected, thereby improving the subsequent heating effect.

[0026] Obviously, the above embodiments of this utility model are merely illustrative examples and not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, these obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A thermal energy circulation structure for a vacuum freeze-drying equipment, comprising a cabinet (1), wherein the cabinet (1) is connected to a refrigeration component (2) and a vacuum pump (3), characterized in that, Also includes: The heat insulation board (4) is installed inside the cabinet (1) and divides the inner cavity of the cabinet (1) into a front cavity and a rear cavity. The refrigeration component (2) is located in the rear cavity of the cabinet (1). The vacuum pump (3) is connected to the front cavity of the cabinet (1). The freeze-drying partition (5) is set in the front cavity of the cabinet (1), and the interior of the freeze-drying partition (5) is hollow; A heat collection component (6) is installed in the rear cavity of the cabinet (1) and connected to the freeze-drying partition (5); One end of the No. 1 connecting pipe (7) is connected to the refrigeration component (2), and the other end is located in the front cavity of the cabinet (1); Water collection assembly (8) is located at the bottom of freeze-drying partition (5).

2. The thermal energy circulation structure of the vacuum freeze-drying equipment according to claim 1, characterized in that: The heat collection component (6) includes a heat collection block (61), and a plurality of heat collection tubes (62) are provided through the heat collection block (61). A second connecting pipe (63) is connected between the heat collection block (61) and the freeze-drying partition (5). The inner cavity of the freeze-drying partition (5) is provided with a heat-conducting pipe (64) for communicating with the second connecting pipe (63).

3. The thermal energy circulation structure of the vacuum freeze-drying equipment according to claim 2, characterized in that: Several of the heat collection tubes (62) are arranged linearly from top to bottom.

4. The thermal energy circulation structure of the vacuum freeze-drying equipment according to claim 2, characterized in that: The adjacent heat pipes (64) are distributed in an "S" shape.

5. The thermal energy circulation structure of the vacuum freeze-drying equipment according to claim 2, characterized in that: The water collection assembly (8) includes a No. 3 connecting pipe (81) that penetrates the bottom of the inner cavity of the freeze-drying partition (5). The No. 3 connecting pipe (81) is connected to a collection tank (83), and an absorbent pad (82) is installed at the bottom of the inner cavity of the collection tank (83).

6. The thermal energy circulation structure of the vacuum freeze-drying equipment according to claim 5, characterized in that: The bottom of the inner cavity of the freeze-drying partition (5) is provided with an inclined guide plate (9), and the water collection assembly (8) is located at the lowest point of the guide plate (9).

7. The thermal energy circulation structure of the vacuum freeze-drying equipment according to claim 1, characterized in that: The cabinet (1) is equipped with a PLC controller (10) at the front, a support plate (11) for supporting the vacuum pump (3) on the side, and an exhaust pipe (12) for communicating with the rear cavity of the cabinet (1) at the rear.

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