A mobile household vacuum freeze dryer

Abstract

This utility model discloses a mobile household vacuum freeze dryer, belonging to the field of vacuum freeze dryers. It includes a vacuum freeze dryer body with a placement cavity on its front side. A fixed frame is fixedly connected inside the placement cavity, and multiple placement racks are placed inside the fixed frame. An acrylic door is rotatably connected to the front side of the vacuum freeze dryer body, and a rotating frame is rotatably connected to the inner wall of the placement cavity. By rotatably connecting the rotating frame to the inner wall of the placement cavity and providing a cleaning part at the opening of the placement cavity, the cleaning part can promptly remove frozen material that falls into the opening when the rotating frame rotates. This ensures that the acrylic door can form a good seal with the placement cavity when closed, greatly improving the sealing performance of the vacuum freeze dryer and guaranteeing the stability and effectiveness of the freeze-drying process.

Description

Technical Field

[0001] This utility model belongs to the technical field of vacuum freeze dryer, specifically relating to a mobile household vacuum freeze dryer. Background Technology

[0002] Home freeze dryers, also known as household freeze dryers, are small vacuum freeze dryers suitable for home use and small-scale freeze drying for online stores. They are widely applicable to the freeze drying of fruits, meats, vegetables, Chinese medicinal herbs, health products, and other products, representing a trend in the development of freeze dryers from specialized applications to civilian and household use. Freeze-dried foods and medicinal herbs are easier to preserve for long periods, retaining the original flavor and shape to the greatest extent while also providing optimal protection for nutrients.

[0003] For example, CN 222231102 U discloses a layered vacuum freeze dryer for COFs material production, including a dryer body. A heater is fixedly installed on the inner wall of the dryer body, and an L-shaped frame is fixedly installed on the inner wall of the dryer body. A support frame is overlapped inside the L-shaped frame, and a fixing frame is fixedly installed at the bottom of the support frame. This layered vacuum freeze dryer for COFs material production drives the placement frame to move up and down through a rotating component, which in turn moves the material up and down. This creates a larger gap at the bottom of the material, accelerating the discharge of moisture. It prevents the bottom of the material from sticking to the inner wall of the placement frame during the drying process, which would cause the drying speed of the blocked part of the material to be lower than that of the exposed part, thus affecting the overall drying speed. It also avoids the difficulty of removing water vapor adhering between the material and the placement frame by the vacuum pump, which could lead to incomplete drying of the raw materials in the container.

[0004] In the above cases, during actual use, some frozen materials are prone to falling into the opening of the placement chamber of the vacuum freeze dryer. When the sealing door is closed, it can easily affect the sealing effect of the dryer. Therefore, this utility model provides a mobile household vacuum freeze dryer. Utility Model Content

[0005] The purpose of this invention is to provide a mobile, household-use vacuum freeze dryer to solve the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mobile household vacuum freeze dryer, comprising a vacuum freeze dryer body, a placement cavity opened on the front of the vacuum freeze dryer body, a fixed frame fixedly connected inside the placement cavity, multiple placement racks placed inside the fixed frame, an plexiglass door rotatably connected to the front of the vacuum freeze dryer body, and a rotating frame rotatably connected to the inner wall of the placement cavity.

[0007] In a preferred embodiment, the rotating frame is provided with a connecting part on its exterior, the inner wall of the placement cavity is provided with a connecting groove adapted to the connecting part, and the side of the plexiglass door facing the placement cavity is provided with a sealing ring.

[0008] In a preferred embodiment, the rotating frame has a plurality of cleaning sections arranged in a ring on the side facing the opening of the placement cavity. The cleaning sections are inclined and the outer wall of the cleaning sections is in contact with the inner wall of the opening of the placement cavity.

[0009] In a preferred embodiment, a drive motor is fixedly connected to the inner wall of the placement cavity, a drive gear is fixedly connected to the output shaft of the drive motor, and the rotating frame has external teeth that mesh with the drive gear facing outward.

[0010] In a preferred embodiment, the inner wall of the rotating frame is provided with triangular elastic protrusions distributed in a ring, and the interior of the elastic protrusions is provided with elliptical deformation holes, and the fixed frame is located on the movement trajectory of the elastic protrusions.

[0011] In a preferred embodiment, a display screen is provided on the top of the front of the vacuum freeze dryer body, a switch is provided on one side of the display screen, and a vacuum pumping pipeline and a water draining and gas filling valve are provided on one side of the vacuum freeze dryer body.

[0012] In a preferred embodiment, the bottom of the vacuum freeze dryer body is provided with four casters.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This mobile household vacuum freeze dryer features a rotating frame connected to the inner wall of the placement chamber, with a cleaning section positioned at the opening of the placement chamber. As the frame rotates, the cleaning section promptly removes any frozen material that falls into the opening, ensuring a good seal between the plexiglass door and the placement chamber when closed. This significantly improves the sealing performance of the vacuum freeze dryer and guarantees the stability and effectiveness of the freeze-drying process.

[0015] This portable household vacuum freeze dryer features triangular elastic protrusions on the inner wall of the rotating rack, with elliptical deformation holes inside. The fixed frame is positioned along the movement trajectory of these elastic protrusions. As the rack rotates, the elastic protrusions contact and strike the fixed frame, generating a slight vibration. This vibration is transmitted to the food inside the rack, causing unevenly piled food to spread out. With the food spread out, the heating and freeze-drying process becomes more uniform, preventing some food from being incompletely freeze-dried due to excessive pile thickness or over-freezing due to excessive exposure. This significantly improves the quality and consistency of the freeze-dried food. Attached Figure Description

[0016] Figure 1 This is a front view of the structure of this utility model;

[0017] Figure 2 for Figure 1 Enlarged view of point A;

[0018] Figure 3 This is a front view of the rotating frame;

[0019] Figure 4 for Figure 3 Enlarged diagram of point B.

[0020] In the diagram: 1. Main body of the vacuum freeze dryer; 101. Placement chamber; 102. Fixing frame; 2. Display screen; 201. Switch; 3. Vacuum pumping pipeline; 4. Water drain and gas filling valve; 5. Acrylic glass door; 501. Sealing ring; 6. Placement rack; 7. Rotating rack; 701. Cleaning section; 702. Connecting section; 703. External teeth; 704. Elastic protrusion; 705. Deformation hole; 8. Drive motor; 801. Drive gear; 9. Casters. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments.

[0022] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the concept of the present invention are all within the scope of protection claimed by the present invention.

[0023] Please see Figure 1-4This utility model provides a portable household vacuum freeze dryer, including a vacuum freeze dryer body 1. A display screen 2 is located on the top of the front of the vacuum freeze dryer body 1, and a switch 201 is located on one side of the display screen 2. A vacuum pumping pipe 3 and a water draining / gas filling valve 4 are located on one side of the vacuum freeze dryer body 1. A placement cavity 101 is opened on the front of the vacuum freeze dryer body 1, and a fixing frame 102 is fixedly connected inside the placement cavity 101. Multiple layers of placement racks 6 are placed inside the fixing frame 102. An plexiglass door 5 is rotatably connected to the front of the vacuum freeze dryer body 1, and a rotating frame 7 is rotatably connected to the inner wall of the placement cavity 101. The external part is provided with a connecting part 702, and the inner wall of the placement cavity 101 is provided with a connecting groove adapted to the connecting part 702. The side of the plexiglass door 5 facing the placement cavity 101 is provided with a sealing ring 501. The side of the rotating frame 7 facing the opening of the placement cavity 101 is provided with a plurality of cleaning parts 701 arranged in a ring. The cleaning parts 701 are inclined, and the outer wall of the cleaning parts 701 fits against the inner wall of the opening of the placement cavity 101. The inner wall of the placement cavity 101 is fixedly connected to a drive motor 8, and the output shaft of the drive motor 8 is fixedly connected to a drive gear 801. The rotating frame 7 is provided with an external tooth 703 that meshes with the drive gear 801 on the outside of the drive gear 801.

[0024] The user places the food to be freeze-dried evenly on the multi-layer rack 6, then opens the plexiglass door 5 and places the rack 6 along with the food into the placement cavity 101 inside the vacuum freeze dryer body 1, placing it on the fixed frame 102. The drive motor 8 starts, and its output shaft drives the drive gear 801 to rotate. Since the external teeth 703 on the rotating frame 7 mesh with the drive gear 801, the rotating frame 7 will start to rotate on the inner wall of the placement cavity 101. When the rotating frame 7 rotates, its external connecting part 702 slides in the connecting groove on the inner wall of the placement cavity 101 to ensure the stable rotation of the rotating frame 7. At the same time, the cleaning part 701 on the side of the rotating frame 7 facing the opening of the placement cavity 101 will rotate accordingly. The cleaning part 701 is inclined and its outer wall is in contact with the inner wall of the opening of the placement cavity 101.

[0025] During rotation, the cleaning unit 701 removes frozen material or other debris that falls into the opening of the placement chamber 101 to prevent it from affecting the sealing effect of the plexiglass door 5. The plexiglass door 5 is then closed, and the sealing ring 501 on the plexiglass door 5 fits tightly against the opening of the placement chamber 101 to form a preliminary seal. The user presses the switch 201 to start the vacuum freeze dryer, and the equipment begins to run. The vacuum line 3 is activated to perform a vacuum operation on the placement chamber 101, so that the placement chamber 101 reaches the required vacuum level, creating a suitable environment for the freeze-drying process. After the freeze-drying process is completed, the user can fill the placement chamber 101 with air through the drain and air filling valve 4 to restore the pressure inside the placement chamber 101 to normal atmospheric pressure. Then, the plexiglass door 5 is opened, and the freeze-dried food is taken out, completing the entire freeze-drying process.

[0026] The sealing ring 501 on the plexiglass door 5 fits tightly against the opening of the placement cavity 101. In addition, the cleaning unit 701 cleans up the frozen material that falls into the opening in time, ensuring the good sealing performance of the vacuum freeze dryer during the freeze-drying process. This effectively prevents outside air from entering the placement cavity 101 and ensures the freeze-drying effect. Through the cooperation of the drive motor 8, the drive gear 801 and the external gear 703 on the rotating frame 7, the rotating frame 7 is automatically rotated, which in turn drives the cleaning unit 701 to automatically clean the debris at the opening of the placement cavity 101.

[0027] In this embodiment, the inner wall of the rotating frame 7 is provided with triangular elastic protrusions 704 arranged in a ring. The elastic protrusions 704 have elliptical deformation holes 705 inside. The fixed frame 102 is located on the movement trajectory of the elastic protrusions 704. As the rotating frame 7 rotates, the elastic protrusions 704 will gradually approach and eventually contact the fixed frame 102. When the elastic protrusions 704 contact the fixed frame 102, due to the triangular shape of the elastic protrusions 704, a certain pressure will be generated at the contact point. At the same time, the elliptical deformation holes 705 inside the elastic protrusions 704 provide space for the deformation of the elastic protrusions 704. Under pressure, the elastic protrusion 704 undergoes elastic deformation and contracts towards the deformation hole 705. As the rotating frame 7 continues to rotate, the elastic protrusion 704 gradually detaches from the contact state with the fixed frame 102. During the detachment process, the elastic protrusion 704 returns to its original shape due to its own elasticity. In the process of returning to its original shape, the elastic protrusion 704 generates a small reaction force on the fixed frame 102. This reaction force is transmitted to the fixed frame 102 in the form of vibration, and then to the multi-layer shelf 6 placed on the fixed frame 102, as well as the food inside the shelf 6.

[0028] The vibration generated by the elastic protrusion 704 can cause the food that may have been unevenly piled up to move relative to each other within the rack 6, gradually flattening it out. Originally, the food may have been piled up thicker on one side and thinner on the other. Through this vibration, the food will move towards the thinner side, making the food evenly distributed within the rack 6. After the food is evenly distributed, during the freeze-drying process, heat can be transferred to all parts of the food more evenly. This avoids situations where some food is not completely freeze-dried due to excessive pile-up, or some food is over-frozen due to excessive exposure. This significantly improves the quality and consistency of the freeze-dried food, allowing the taste and nutritional components of the freeze-dried food to be better preserved.

[0029] In this embodiment, the bottom of the vacuum freeze dryer body 1 is provided with four casters 9, which can easily move the equipment.

[0030] The working principle and usage process of this utility model are as follows: First, the user evenly places the food to be freeze-dried on the multi-layer rack 6. Then, the user opens the plexiglass door 5 and places the rack 6 along with the food into the placement cavity 101 inside the vacuum freeze dryer body 1, placing it on the fixed frame 102. The drive motor 8 starts, and its output shaft drives the drive gear 801 to rotate. Since the external teeth 703 on the rotating frame 7 mesh with the drive gear 801, the rotating frame 7 will start to rotate on the inner wall of the placement cavity 101. When the rotating frame 7 rotates, its external connecting part 702 slides in the connecting groove on the inner wall of the placement cavity 101, ensuring the stable rotation of the rotating frame 7. At the same time, the cleaning part 701 on the side of the rotating frame 7 facing the opening of the placement cavity 101 will rotate accordingly. The cleaning part 701 is inclined, and its outer wall is in contact with the inner wall of the opening of the placement cavity 101. During the rotation, the cleaning part 701... 1. Remove any frozen material or other debris that falls into the opening of the placement cavity 101 to prevent it from affecting the sealing effect of the plexiglass door 5. As the rotating frame 7 rotates, the elastic protrusion 704 gradually approaches and eventually contacts the fixed frame 102. When the elastic protrusion 704 contacts the fixed frame 102, due to the triangular shape of the elastic protrusion 704, a certain pressure is generated at the contact point. At the same time, the elliptical deformation hole 705 inside the elastic protrusion 704 provides space for the deformation of the elastic protrusion 704. Under the action of pressure, the elastic protrusion 704 will undergo elastic deformation and contract towards the deformation hole 705. As the rotating frame 7 continues to rotate, the elastic protrusion 704 will gradually detach from the contact state with the fixed frame 102. During the detachment process, the elastic protrusion 704 will return to its original shape due to its own elasticity. During the process of returning to its original shape, the elastic protrusion 704 will generate a small reaction force on the fixed frame 102. This reaction force is transmitted to the fixed frame 102 in the form of vibration, and then to the multi-layer placement rack 6 placed on the fixed frame 102, as well as the food inside the placement rack 6. When the plexiglass door 5 is closed, the sealing ring 501 on the plexiglass door 5 will fit tightly with the opening of the placement cavity 101, forming a preliminary seal. The user presses the switch 201 to start the vacuum freeze dryer. The equipment starts running, the vacuum pipeline 3 is activated, and the placement cavity 101 is evacuated to achieve the required vacuum level, creating a suitable environment for the freeze-drying process. After the freeze-drying process is completed, the user can fill the placement cavity 101 with air through the drain and air filling valve 4 to restore the pressure inside the placement cavity 101 to normal atmospheric pressure. Then, the plexiglass door 5 is opened, the freeze-dried food is taken out, and the entire freeze-drying process is completed.

[0031] It should be noted in the above scheme that the main body 1 of the vacuum freeze dryer is model YS-HFD-1 household vacuum freeze dryer. Its internal structure is all existing technology, so it has not been described in detail. At the same time, the universal wheel 9 is model L-ZD09 and can be self-locked by foot pedal.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mobile household vacuum freeze dryer, comprising a vacuum freeze dryer body (1), characterized in that: The vacuum freeze dryer body (1) has a placement cavity (101) on the front side. A fixed frame (102) is fixedly connected inside the placement cavity (101). A multi-layer placement rack (6) is placed inside the fixed frame (102). An organic glass door (5) is rotatably connected to the front side of the vacuum freeze dryer body (1). A rotating frame (7) is rotatably connected to the inner wall of the placement cavity (101).

2. A mobile household vacuum freeze dryer according to claim 1, characterized in that: The rotating frame (7) has a connecting part (702) on its outside. The inner wall of the placement cavity (101) has a connecting groove that matches the connecting part (702). The organic glass door (5) has a sealing ring (501) on the side facing the placement cavity (101).

3. A mobile household vacuum freeze dryer according to claim 2, characterized in that: The rotating frame (7) has a plurality of cleaning parts (701) arranged in a ring on the side facing the opening of the placement cavity (101). The cleaning parts (701) are inclined and the outer wall of the cleaning parts (701) is in contact with the inner wall of the opening of the placement cavity (101).

4. A mobile household vacuum freeze dryer according to claim 2, characterized in that: A drive motor (8) is fixedly connected to the inner wall of the placement cavity (101), and a drive gear (801) is fixedly connected to the output shaft of the drive motor (8). The rotating frame (7) has external teeth (703) that mesh with the drive gear (801) facing the outside of the drive gear (801).

5. A mobile household vacuum freeze dryer according to claim 4, characterized in that: The inner wall of the rotating frame (7) is provided with triangular elastic protrusions (704) distributed in a ring. Elliptical deformation holes (705) are opened inside the elastic protrusions (704). The fixed frame (102) is located on the movement trajectory of the elastic protrusions (704).

6. A mobile household vacuum freeze dryer according to claim 1, characterized in that: The vacuum freeze dryer body (1) has a display screen (2) on the top of the front side, a switch (201) on one side of the display screen (2), and a vacuum pipe (3) and a water drain and gas filling valve (4) on one side of the vacuum freeze dryer body (1).

7. A mobile household vacuum freeze dryer according to claim 1, characterized in that: The bottom of the vacuum freeze dryer body (1) is provided with four casters (9).

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