Energy-saving vacuum freeze dryer equipment and using method thereof

Abstract

The invention relates to the technical field of drying, in particular to energy-saving type vacuum freeze dryer equipment and a using method thereof.The equipment comprises a machine shell, a heat pump, a heating mechanism, a capturing mechanism, a vacuum pump and a sealing door mechanism; the pre-frozen materials are placed on a heating mechanism in a drying bin; after it is confirmed that the sealing door mechanism is well sealed, a vacuum pump is started to start vacuumizing, and when the vacuum degree in the drying bin is reduced to a set value, a heat pump is started; after the heat pump is started, the heating mechanism starts to slowly increase the temperature of the materials, ice crystals in the materials directly sublimate into water vapor, and the water vapor enters the capturing bin and is captured by the capturing mechanism until the materials are thoroughly dried; after drying is completed, the heat pump and the vacuum pump are closed firstly, then the sealing door mechanism is opened, and materials are taken out. The problems that a traditional vacuum freeze dryer is high in overall energy consumption and not energy-saving enough are solved.

Description

Technical Field

[0001] This invention relates to the field of drying technology, and in particular to an energy-saving vacuum freeze dryer and its usage method. Background Technology

[0002] Existing food vacuum freeze dryers (freeze dryers) typically consist of four core subsystems: vacuum equipment, heating equipment, refrigeration equipment, and control equipment. The vacuum equipment uses a vacuum pump to create a low-pressure environment in the drying chamber, providing the thermodynamic conditions for the direct sublimation of ice crystals. The heating equipment provides the necessary heat to the material during the sublimation and desorption stages, currently using electric heating plates or steam heating. The refrigeration equipment mainly includes a compressor, condenser, and cold trap coils; its function is to rapidly freeze the material during the pre-freezing stage and capture water vapor during sublimation, preventing it from entering the vacuum pump and causing contamination or efficiency reduction. The control equipment acts as the "brain" of the entire machine, coordinating the automatic operation of each subsystem according to a preset process curve, ensuring a stable and controllable freeze-drying process.

[0003] However, in traditional freeze dryers, the heating and refrigeration equipment operate independently. During the refrigeration process, the large amount of waste heat generated by the refrigeration equipment (compressor) is usually directly discharged into the environment without being recycled. At the same time, the heating equipment still needs to consume additional electricity or steam to provide heat. Therefore, the overall energy consumption is high and not energy-efficient. Summary of the Invention

[0004] The purpose of this invention is to provide an energy-saving vacuum freeze dryer and its usage method, aiming to solve the problem of high overall energy consumption and insufficient energy efficiency of traditional vacuum freeze dryers.

[0005] To achieve the above objectives, the present invention provides an energy-saving vacuum freeze dryer, comprising a housing, a heat pump, a heating mechanism, a trapping mechanism, a vacuum pump, and a sealing door mechanism; The housing contains a drying chamber, a capture chamber, and a mounting cavity; the capture chamber is connected to the drying chamber; the mounting cavity is located below the drying chamber and the capture chamber. The heat pump is fixedly installed in the mounting cavity; the heating mechanism is installed in the drying chamber, with its bottom end contacting the hot end of the heat pump for heat exchange, and the heating mechanism is used to carry and heat the material; the capturing mechanism is installed in the capturing chamber, with its bottom end contacting the cold end of the heat pump for heat exchange, and the capturing mechanism is used to capture water vapor; the vacuum pump is fixedly installed on one side of the casing and communicates with the capturing chamber; the sealing door mechanism is installed on one side of the casing.

[0006] The heating mechanism includes a first storage tank, multiple heat exchange coils, multiple branch pipes, a first circulating pump, a first supply pipe, and a first return pipe. The first storage tank is fixedly installed at the hot end of the heat pump and located within the mounting cavity; multiple heat exchange coils are evenly fixedly installed from top to bottom within the drying chamber, with each pair of adjacent heat exchange coils connected by a branch pipe; the first circulation pump is fixedly installed at the top of the first storage tank and connected to the first storage tank; the bottom end of the first supply pipe is connected to the first circulation pump, and the top end is connected to the bottommost heat exchange coil; the bottom end of the first return pipe is connected to the first storage tank, and the top end is connected to the topmost heat exchange coil; a heat transfer medium circulates within the first storage tank and the multiple heat exchange coils.

[0007] The heating mechanism also includes multiple guide rails and multiple support trays; Multiple guide rails are evenly fixed from top to bottom on both sides of the drying chamber; a support tray is slidably arranged between two guide rails at the same horizontal height; the bottom surface of each support tray is in contact with a heat exchange coil.

[0008] The capture mechanism includes a second storage tank, multiple vertical hollow plates, two diversion pipes, a second circulation pump, a second supply pipe, and a second return pipe. The second storage tank is fixedly installed at the cold end of the heat pump and located within the mounting cavity; multiple vertical hollow plates are horizontally and evenly fixed within the capture chamber; one of the diversion pipes is connected to the multiple vertical hollow plates and is located at the top of the multiple vertical hollow plates; another diversion pipe is connected to the multiple vertical hollow plates and is located at the bottom of the multiple vertical hollow plates; the second circulation pump is fixedly installed at the top of the second storage tank and is connected to the second storage tank; the top end of the second supply pipe is connected to the lower diversion pipe, and the bottom end is connected to the second circulation pump; the top end of the second return pipe is connected to the upper diversion pipe, and the bottom end is connected to the second storage tank; refrigerant circulates within the second storage tank and the multiple vertical hollow plates.

[0009] The sealing door mechanism includes a rotating door and a sealing ring; The rotating door is rotatably mounted on one side of the housing; the sealing ring is fixedly mounted on one side of the rotating door.

[0010] The sealing door mechanism also includes a latch, two embedded blocks, a spring, and a U-shaped block. The latch is fixedly installed on one side of the rotating door; a vertical hole is provided inside the latch; two embedded blocks are slidably installed in the vertical hole respectively; the end of the embedded block is hemispherical; the spring is installed in the vertical hole and located between the two embedded blocks; the U-shaped block is fixedly installed on one side of the housing, and the U-shaped block is provided with two embedded holes.

[0011] The energy-saving vacuum freeze dryer also includes a distribution plate and multiple nozzles; The diversion plate is fixedly installed on the top of the capture chamber; the multiple nozzles are respectively fixedly installed at the bottom of the diversion plate and communicate with the diversion plate.

[0012] The energy-saving vacuum freeze dryer also includes a drain pipe and valves. One end of the drainage pipe is connected to the capture chamber, and the other end passes through the housing; the valve is fixedly installed on the drainage pipe.

[0013] The support tray is provided with multiple ventilation holes.

[0014] This invention also provides a method for using an energy-saving vacuum freeze dryer, the specific steps of which include: Place the pre-frozen material onto the heating mechanism inside the drying chamber; After confirming that the sealing door mechanism is properly sealed, start the vacuum pump to begin evacuation. When the vacuum level inside the drying chamber drops to the set value, start the heat pump. After the heat pump starts, the heating mechanism begins to slowly raise the temperature of the material. The ice crystals in the material sublimate directly into water vapor, which enters the capture chamber and is captured by the capture mechanism until the material is completely dry. After drying is complete, first turn off the heat pump and vacuum pump, then open the sealing door mechanism and remove the material.

[0015] This invention discloses an energy-saving vacuum freeze dryer and its usage method. The heating mechanism carries the material and, after heat exchange with the hot end of the heat pump, its temperature rises to heat the material. The capturing mechanism, after heat exchange with the cold end of the heat pump, lowers its temperature to capture sublimated water vapor. The sealing door mechanism ensures the airtightness of the machine casing. The vacuum pump creates a vacuum, ensuring the vacuum level inside the drying chamber reaches a set value. In use, the pre-frozen material is placed onto the heating mechanism inside the drying chamber. After confirming that the sealing door mechanism is properly sealed, the vacuum pump is started to create a vacuum. When the vacuum level inside the drying chamber drops to a set value, the heat pump is started. After the heat pump starts, the heating mechanism begins to slowly raise the temperature of the material. The ice crystals in the material directly sublimate into water vapor, which enters the capture chamber and is captured by the capture mechanism until the material is completely dry. After drying is complete, the heat pump and vacuum pump are turned off first, and then the sealing door mechanism is opened to remove the material. By adopting the above method, the hot end of the heat pump replaces the heating work of the original independent heating equipment, and the cold end replaces the cooling work of the original independent refrigeration equipment. No waste heat is generated, thus solving the problem of high overall energy consumption and insufficient energy saving of traditional vacuum freeze dryer equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention.

[0018] Figure 2 This is a left view of the first embodiment of the present invention.

[0019] Figure 3 yes Figure 2 A cross-sectional view along the AA direction.

[0020] Figure 4 yes Figure 3 A magnified view of detail A.

[0021] Figure 5 This is a cross-sectional view of the first embodiment of the present invention.

[0022] Figure 6 This is a cross-sectional view of the first embodiment of the present invention from another angle.

[0023] Figure 7 yes Figure 6 A magnified view of detail B.

[0024] Figure 8 This is a cross-sectional view of the first embodiment of the present invention from another angle.

[0025] Figure 9 This is a structural schematic diagram of the first embodiment of the present invention from another angle.

[0026] Figure 10 This is a flowchart illustrating the second embodiment of the present invention.

[0027] 1-Casing, 2-Heat pump, 3-Heating mechanism, 4-Capture mechanism, 5-Vacuum pump, 6-Sealing door mechanism, 7-Diverter plate, 8-Nozzle, 9-Drainage pipe, 10-Valve, 101-Drying chamber, 102-Capture chamber, 103-Installation cavity, 301-First storage tank, 302-Heat exchange coil, 303-Branch pipe, 304-First circulation pump, 305-First supply pipe, 306-First return pipe, 307- Guide rail, 308-carrying tray, 30801-vent hole, 401-second storage tank, 402-vertical hollow plate, 403-diverter pipe, 404-second circulation pump, 405-second supply pipe, 406-second return pipe, 601-rotating door, 602-sealing ring, 603-locking tongue, 604-embedded block, 605-spring, 606-U-shaped block, 60301-vertical hole, 60601-embedded hole. Detailed Implementation

[0028] The first embodiment of this application is: Please see Figures 1-9 ,in, Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention. Figure 2 This is a left view of the first embodiment of the present invention. Figure 3 yes Figure 2 A cross-sectional view along the AA direction. Figure 4 yes Figure 3 A magnified view of detail A. Figure 5 This is a cross-sectional view of the first embodiment of the present invention. Figure 6 This is a cross-sectional view of the first embodiment of the present invention from another angle. Figure 7 yes Figure 6 A magnified view of detail B. Figure 8 This is a cross-sectional view of the first embodiment of the present invention from another angle. Figure 9 This is a structural schematic diagram of the first embodiment of the present invention from another angle.

[0029] This invention provides an energy-saving vacuum freeze dryer: comprising a casing 1, a heat pump 2, a heating mechanism 3, a capture mechanism 4, a vacuum pump 5, and a sealing door mechanism 6; the casing 1 is provided with a drying chamber 101, a capture chamber 102, and an installation cavity 103; the heating mechanism 3 includes a first storage tank 301, multiple heat exchange coils 302, multiple branch pipes 303, a first circulation pump 304, a first liquid supply pipe 305, and a first liquid return pipe 306; the heating mechanism 3 also includes multiple guide rails 307 and multiple support trays 308; the capture mechanism 4 includes a second storage tank 401, multiple vertical hollow plates 402, and two diversion pipes 40 3. A second circulation pump 404, a second liquid supply pipe 405, and a second liquid return pipe 406; the sealing door mechanism 6 includes a rotating door 601 and a sealing ring 602; the sealing door mechanism 6 also includes a locking tongue 603, two embedded blocks 604, a spring 605, and a U-shaped block 606; the locking tongue 603 has a vertical hole 60301; the U-shaped block 606 has two embedded holes 60601; the energy-saving vacuum freeze dryer also includes a distribution plate 7 and multiple nozzles 8; the energy-saving vacuum freeze dryer also includes a drainage pipe 9 and a valve 10; the carrying tray 308 has multiple vent holes 30801. The aforementioned solution solves the problem of high overall energy consumption and insufficient energy efficiency in traditional vacuum freeze dryers.

[0030] Furthermore, the capture chamber 102 is connected to the drying chamber 101; the mounting cavity 103 is located below the drying chamber 101 and the capture chamber 102. The heat pump 2 is fixedly installed in the mounting cavity 103; the heating mechanism 3 is installed in the drying chamber 101, and the bottom end of the heating mechanism 3 contacts the hot end of the heat pump 2 for heat exchange. The heating mechanism 3 is used to carry materials and heat them; the capturing mechanism 4 is installed in the capturing chamber 102, and the bottom end of the capturing mechanism 4 contacts the cold end of the heat pump 2 for heat exchange. The capturing mechanism 4 is used to capture water vapor; the vacuum pump 5 is fixedly installed on one side of the casing 1 and communicates with the capturing chamber 102; the sealing door mechanism 6 is installed on one side of the casing 1.

[0031] In this embodiment, the heating mechanism 3 is used to carry the material. After exchanging heat with the hot end of the heat pump 2, the temperature of the heating mechanism 3 increases, which is used to heat the material. After exchanging heat with the cold end of the heat pump 2, the temperature of the capturing mechanism 4 decreases, which is used to capture the sublimated water vapor. The sealing door mechanism 6 is used to ensure the airtightness of the inside of the casing 1. The vacuum pump 5 is used to create a vacuum, so that the vacuum degree inside the drying chamber 101 reaches a set value. In use, the pre-frozen material is placed onto the heating mechanism 3 inside the drying chamber 101. After confirming that the sealing door mechanism 6 is properly sealed, the vacuum pump 5 is started to evacuate the vacuum. When the vacuum level inside the drying chamber 101 drops to a set value, the heat pump 2 is started. After the heat pump 2 is started, the heating mechanism 3 begins to slowly raise the temperature of the material. The ice crystals in the material directly sublimate into water vapor, which enters the capture chamber 102 and is captured by the capture mechanism 4 until the material is completely dried. After drying is complete, the heat pump 2 and the vacuum pump 5 are turned off first, and then the sealing door mechanism 6 is opened to remove the material. By using the above method, the hot end of heat pump 2 replaces the heating work of the original independent heating equipment, and the cold end replaces the cooling work of the original independent refrigeration equipment. No waste heat is generated, thus solving the problem of high overall energy consumption and insufficient energy saving of traditional vacuum freeze dryer equipment.

[0032] Furthermore, the first storage tank 301 is fixedly installed at the hot end of the heat pump 2 and located within the mounting cavity 103; a plurality of heat exchange coils 302 are evenly fixedly installed from top to bottom within the drying chamber 101, and every two adjacent heat exchange coils 302 are connected through the branch pipe 303; the first circulation pump 304 is fixedly installed at the top of the first storage tank 301 and is connected to the first storage tank 301; the bottom end of the first liquid supply pipe 305 is connected to the first circulation pump 304, and the top end is connected to the bottommost heat exchange coil 302; the bottom end of the first liquid return pipe 306 is connected to the first storage tank 301, and the top end is connected to the topmost heat exchange coil 302; a heat transfer medium circulates within the first storage tank 301 and the plurality of heat exchange coils 302.

[0033] In this embodiment, the heat exchange coil 302 is meandering, and the first storage tank 301 contains a heat transfer medium, such as heat transfer oil. Under the action of the first circulating pump 304, the heat transfer medium flows sequentially through the first liquid supply pipe 305 and multiple heat exchange coils 302, and finally flows back to the first storage tank 301 through the first liquid return pipe 306. The heat transfer medium exchanges heat with the hot end of the heat pump 2, and the temperature rises, thereby heating the material.

[0034] Furthermore, multiple guide rails 307 are evenly fixed from top to bottom on both sides of the drying chamber 101; a support tray 308 is slidably arranged between two guide rails 307 at the same horizontal height; the bottom surface of each support tray 308 is in contact with a heat exchange coil 302.

[0035] In this embodiment, the guide rail 307 is used to slide the support tray 308, the support tray 308 is used to support materials and is in contact with the heat exchange coil 302, the heat exchange coil 302 heats the support tray 308, and the support tray 308 heats the materials.

[0036] Furthermore, the second storage tank 401 is fixedly disposed at the cold end of the heat pump 2 and located within the mounting cavity 103; a plurality of vertical hollow plates 402 are horizontally and uniformly fixedly disposed within the capture chamber 102; one of the diversion pipes 403 is connected to the plurality of vertical hollow plates 402 respectively and is located at the top of the plurality of vertical hollow plates 402; another diversion pipe 403 is connected to the plurality of vertical hollow plates 402 respectively and is located at the bottom of the plurality of vertical hollow plates 402; the second circulation pump 404 is fixedly disposed at the top of the second storage tank 401 and is connected to the second storage tank 401; the top end of the second liquid supply pipe 405 is connected to the lower diversion pipe 403, and the bottom end is connected to the second circulation pump 404; the top end of the second liquid return pipe 406 is connected to the upper diversion pipe 403, and the bottom end is connected to the second storage tank 401; refrigerant circulates within the second storage tank 401 and the plurality of vertical hollow plates 402.

[0037] In this embodiment, the second storage tank 401 contains refrigerant. Under the action of the second circulating pump 404, the refrigerant flows sequentially through the lower branch pipe 403, the multiple vertical hollow plates 402, and the upper branch pipe 403, and finally flows back to the second storage tank 401 through the second return pipe 406. The refrigerant exchanges heat with the cold end of the heat pump 2 and cools down. In this way, when water vapor passes through the gaps between the multiple vertical hollow plates 402, it is cooled by the vertical hollow plates 402 and directly condenses into ice, thereby achieving the capture of water vapor.

[0038] Furthermore, the rotating door 601 is rotatably disposed on one side of the housing 1; the sealing ring 602 is fixedly disposed on one side of the rotating door 601.

[0039] In this embodiment, the sealing ring 602 is provided on the side of the rotating door 601 to achieve a good seal when closed.

[0040] Furthermore, the latch 603 is fixedly disposed on one side of the rotating door 601; a vertical hole 60301 is provided in the latch 603; two embedded blocks 604 are respectively slidably disposed in the vertical hole 60301; the end of the embedded block 604 is hemispherical; the spring 605 is disposed in the vertical hole 60301 and located between the two embedded blocks 604; the U-shaped block 606 is fixedly disposed on one side of the housing 1, and the U-shaped block 606 is provided with two embedded holes 60601.

[0041] In this embodiment, when the rotating door 601 is closed by rotation, the locking tongue 603 gradually moves to the inside of the U-shaped block 606. During this process, since the ends of the two embedded blocks 604 are hemispherical, the two embedded blocks 604 are squeezed and gradually retract into the vertical hole 60301. When the upper and lower embedded blocks 604 are aligned with the upper and lower embedded holes 60601 respectively, under the action of the spring 605, the upper and lower embedded blocks 604 are respectively inserted into the upper and lower embedded holes 60601 to achieve locking. As the pressure of the drying chamber 101 decreases, under the action of atmospheric pressure, the rotating door 601 presses against the side of the drying chamber 101 and presses against the sealing ring 602 to achieve reliable sealing. When opening, the rotating door 601 is pulled directly, and the two embedded blocks 604 are squeezed and gradually retract into the vertical hole 60301, so they can be pulled out smoothly.

[0042] Furthermore, the diversion plate 7 is fixedly installed on the top of the capture chamber 102; the plurality of nozzles 8 are respectively fixedly installed at the bottom of the diversion plate 7 and communicate with the diversion plate 7.

[0043] In this embodiment, after a large amount of frost has accumulated on the vertical hollow plate 402, hot water can be connected to the external distribution plate 7, and the multiple nozzles 8 can spray hot water to remove the frost from the multiple vertical hollow plates 402.

[0044] Furthermore, one end of the drainage pipe 9 is connected to the capture chamber 102, and the other end passes through the housing 1; the valve 10 is fixedly installed on the drainage pipe 9.

[0045] In this embodiment, the wastewater from defrosting can flow out from the drain pipe 9 by opening the valve 10.

[0046] Furthermore, the carrying tray 308 is provided with a plurality of ventilation holes 30801.

[0047] In this embodiment, the vent 30801 allows water vapor on the bottom surface of the material to be discharged smoothly.

[0048] This embodiment describes an energy-saving vacuum freeze dryer. The heating mechanism 3 carries the material; after heat exchange with the hot end of the heat pump 2, its temperature rises to heat the material. The capturing mechanism 4 exchanges heat with the cold end of the heat pump 2, lowering its temperature to capture sublimated water vapor. The sealing door mechanism 6 ensures the airtightness of the interior of the casing 1. The vacuum pump 5 creates a vacuum, ensuring the vacuum level inside the drying chamber 101 reaches a set value. In use, the pre-frozen material is placed onto the heating mechanism 3 inside the drying chamber 101. After confirming that the sealing door mechanism 6 is properly sealed, the vacuum pump 5 is started to evacuate the vacuum. When the vacuum level inside the drying chamber 101 drops to a set value, the heat pump 2 is started. After the heat pump 2 is started, the heating mechanism 3 begins to slowly raise the temperature of the material. The ice crystals in the material directly sublimate into water vapor, which enters the capture chamber 102 and is captured by the capture mechanism 4 until the material is completely dried. After drying is complete, the heat pump 2 and the vacuum pump 5 are turned off first, and then the sealing door mechanism 6 is opened to remove the material. By using the above method, the hot end of heat pump 2 replaces the heating work of the original independent heating equipment, and the cold end replaces the cooling work of the original independent refrigeration equipment. No waste heat is generated, thus solving the problem of high overall energy consumption and insufficient energy saving of traditional vacuum freeze dryer equipment.

[0049] It should be noted that if the cooling intensity of the cold end of the heat pump 2 is insufficient, an additional refrigeration device can be installed to cool the refrigerant in the second storage tank 401. In this way, the cold end of the heat pump 2 is equivalent to undertaking part of the cooling work of the independent refrigeration device used in traditional vacuum freeze-drying equipment. At this time, the power consumption of the refrigeration device will also be greatly reduced, so the overall energy saving can also be achieved.

[0050] The second embodiment of this application is as follows: Based on the first embodiment, please refer to Figure 10 ,in, Figure 10 This is a flowchart illustrating the second embodiment of the present invention.

[0051] This invention provides a method for using an energy-saving vacuum freeze dryer; the specific steps include: S1: Place the pre-frozen material into the heating mechanism 3 inside the drying chamber 101; S2: After confirming that the sealing door mechanism 6 is properly sealed, start the vacuum pump 5 to begin evacuation. When the vacuum level in the drying chamber 101 drops to the set value, start the heat pump 2. S3: After the heat pump 2 starts, the heating mechanism 3 begins to slowly raise the temperature of the material. The ice crystals in the material directly sublimate into water vapor. The water vapor enters the capture chamber 102 and is captured by the capture mechanism 4 until the material is completely dry. S4: After drying is complete, first turn off heat pump 2 and vacuum pump 5, then open sealing door mechanism 6 and take out the material.

[0052] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. An energy-saving vacuum freeze dryer, characterized in that... , Includes the casing, heat pump, heating mechanism, trapping mechanism, vacuum pump, and sealing door mechanism; The housing contains a drying chamber, a capture chamber, and a mounting cavity; the capture chamber is connected to the drying chamber; the mounting cavity is located below the drying chamber and the capture chamber. The heat pump is fixedly installed in the mounting cavity; the heating mechanism is installed in the drying chamber, with its bottom end contacting the hot end of the heat pump for heat exchange, and the heating mechanism is used to carry and heat the material; the capturing mechanism is installed in the capturing chamber, with its bottom end contacting the cold end of the heat pump for heat exchange, and the capturing mechanism is used to capture water vapor; the vacuum pump is fixedly installed on one side of the casing and communicates with the capturing chamber; the sealing door mechanism is installed on one side of the casing.

2. The energy-saving vacuum freeze dryer equipment as described in claim 1, characterized in that... , The heating mechanism includes a first storage tank, multiple heat exchange coils, multiple branch pipes, a first circulating pump, a first supply pipe, and a first return pipe; The first storage tank is fixedly installed at the hot end of the heat pump and located within the mounting cavity; multiple heat exchange coils are evenly fixedly installed from top to bottom within the drying chamber, with each pair of adjacent heat exchange coils connected by a branch pipe; the first circulation pump is fixedly installed at the top of the first storage tank and connected to the first storage tank; the bottom end of the first supply pipe is connected to the first circulation pump, and the top end is connected to the bottommost heat exchange coil; the bottom end of the first return pipe is connected to the first storage tank, and the top end is connected to the topmost heat exchange coil; a heat transfer medium circulates within the first storage tank and the multiple heat exchange coils.

3. The energy-saving vacuum freeze dryer equipment as described in claim 2, characterized in that... , The heating mechanism also includes multiple guide rails and multiple support trays; Multiple guide rails are evenly fixed from top to bottom on both sides of the drying chamber; a support tray is slidably arranged between two guide rails at the same horizontal height; the bottom surface of each support tray is in contact with a heat exchange coil.

4. The energy-saving vacuum freeze dryer equipment as described in claim 3, characterized in that... , The capture mechanism includes a second storage tank, multiple vertical hollow plates, two diversion pipes, a second circulation pump, a second supply pipe, and a second return pipe; The second storage tank is fixedly installed at the cold end of the heat pump and located within the mounting cavity; multiple vertical hollow plates are horizontally and evenly fixed within the capture chamber; one of the diversion pipes is connected to the multiple vertical hollow plates and is located at the top of the multiple vertical hollow plates; another diversion pipe is connected to the multiple vertical hollow plates and is located at the bottom of the multiple vertical hollow plates; the second circulation pump is fixedly installed at the top of the second storage tank and is connected to the second storage tank; the top end of the second supply pipe is connected to the lower diversion pipe, and the bottom end is connected to the second circulation pump; the top end of the second return pipe is connected to the upper diversion pipe, and the bottom end is connected to the second storage tank; refrigerant circulates within the second storage tank and the multiple vertical hollow plates.

5. The energy-saving vacuum freeze dryer equipment as described in claim 4, characterized in that... , The sealing door mechanism includes a rotating door and a sealing ring; The rotating door is rotatably mounted on one side of the housing; the sealing ring is fixedly mounted on one side of the rotating door.

6. The energy-saving vacuum freeze dryer equipment as described in claim 5, characterized in that... , The sealing door mechanism also includes a latch, two embedded blocks, a spring, and a U-shaped block; The latch is fixedly installed on one side of the rotating door; a vertical hole is provided inside the latch; two embedded blocks are slidably installed in the vertical hole respectively; the end of the embedded block is hemispherical; the spring is installed in the vertical hole and located between the two embedded blocks; the U-shaped block is fixedly installed on one side of the housing, and the U-shaped block is provided with two embedded holes.

7. The energy-saving vacuum freeze dryer equipment as described in claim 6, characterized in that... , The energy-saving vacuum freeze dryer also includes a distribution plate and multiple nozzles; The diversion plate is fixedly installed on the top of the capture chamber; the multiple nozzles are respectively fixedly installed at the bottom of the diversion plate and communicate with the diversion plate.

8. The energy-saving vacuum freeze dryer equipment as described in claim 7, characterized in that... , The energy-saving vacuum freeze dryer also includes a drain pipe and valves; One end of the drainage pipe is connected to the capture chamber, and the other end passes through the housing; the valve is fixedly installed on the drainage pipe.

9. The energy-saving vacuum freeze dryer equipment as described in claim 8, characterized in that... , The support tray is provided with multiple ventilation holes.

10. A method of using an energy-saving vacuum freeze dryer, applied to the energy-saving vacuum freeze dryer as described in claim 1; characterized in that the specific steps include: Place the pre-frozen material onto the heating mechanism inside the drying chamber; After confirming that the sealing door mechanism is properly sealed, start the vacuum pump to begin evacuation. When the vacuum level inside the drying chamber drops to the set value, start the heat pump. After the heat pump starts, the heating mechanism begins to slowly raise the temperature of the material. The ice crystals in the material sublimate directly into water vapor, which enters the capture chamber and is captured by the capture mechanism until the material is completely dry. After drying is complete, first turn off the heat pump and vacuum pump, then open the sealing door mechanism and remove the material.

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