A freeze-dryer
By introducing a vacuum solenoid valve and a one-way valve structure into the freeze dryer, automatic exhaust and drainage are achieved, solving the problem of human error in freeze dryer operation and ensuring the smooth progress of the freeze drying process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAILE (GUANGZHOU) CRYOGENIC EQUIPMENT CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-21
AI Technical Summary
Existing freeze dryers require manual drainage and venting, which can easily lead to forgetting to close the drain valve and causing freeze drying failure.
A freeze dryer was designed, which adopts a vacuum solenoid valve and a one-way valve structure to achieve automatic exhaust and drainage. The vacuum solenoid valve controls the gas flow, and the one-way valve achieves automatic exhaust and drainage under different air pressures through sealing balls and sealing gaskets.
The automatic exhaust and drainage of the freeze dryer were achieved, avoiding human error and ensuring the smooth progress of the freeze drying process.
Smart Images
Figure CN224534625U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of freeze-drying technology, specifically to a freeze dryer. Background Technology
[0002] Freeze-drying technology is a preservation technology widely used in food, medicine and other fields. It removes moisture from materials by freezing at low temperatures and vacuum drying in order to maintain their original quality and extend their shelf life.
[0003] For example, patent CN217005117U discloses a freeze dryer. This patent uses a drain outlet on the bottom wall of the cold trap, which is connected to a drain pipe to drain water from the cold trap.
[0004] However, there is a significant problem with freeze dryers in use: they require manual drainage and venting. This not only causes inconvenience to users, but also makes it easy for freeze-dried food to fail if the user forgets to close the drain valve.
[0005] Therefore, it is necessary to provide a freeze dryer to solve the above problems.
[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention
[0007] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a freeze dryer that solves the problem that requires manual drainage and venting operations, which may lead to forgetting to close the drain valve and causing freeze-dried food to fail.
[0008] The technical solution adopted by this application to solve its technical problem is: a freeze dryer, comprising: Box; The chamber is installed inside the container, and the outside of the chamber has a vacuum solenoid valve and a one-way valve, the one-way valve comprising: A valve body, which is installed on the outside of the cabin; An inlet channel is installed at one end of the valve body; An outlet is installed at the other end of the valve body; A sliding channel is installed between the inlet channel and the outlet; A sealing gasket is installed at the connection between the inlet channel and the sliding channel; A sealing ball is installed within the sliding channel; A sealing baffle is installed at the connection between the outlet and the sliding channel.
[0009] Furthermore, an exhaust pipe is fixedly installed on the outside of the cabin, and the exhaust pipe is fixedly connected to the vacuum solenoid valve.
[0010] Furthermore, a drain pipe is fixedly installed at the lower end of the cabin, the drain pipe is fixedly connected to the one-way valve, the inlet channel is connected to the drain pipe, and the sealing ball is slidably installed in the sliding channel.
[0011] Furthermore, a support frame is fixedly installed inside the box, and the cabin is located on the upper end of the support frame.
[0012] Furthermore, multiple sets of storage cabinets are fixedly installed inside the cabin.
[0013] Furthermore, the cabin has an inlet, and a cover is hinged to one side of the cabin, the size of which matches the size of the inlet.
[0014] The beneficial effects of this application are: the freeze dryer provided by this application achieves the effect of automatic exhaust and drainage by setting a vacuum solenoid valve and a one-way valve.
[0015] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description
[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is an overall schematic diagram of a freeze dryer according to this application; Figure 2 This is a schematic diagram of another state of a freeze dryer according to this application; Figure 3 This is an explosion diagram of a freeze dryer according to this application; Figure 4 for Figure 1 Schematic diagram of the mid-section; Figure 5 for Figure 1 Cross-sectional schematic diagram of the middle hull; Figure 6 for Figure 5 A cross-sectional schematic diagram of a check valve; The following are the labeling elements in the figure: 1. Box body; 2. Cabinet; 3. Storage cabinet; 4. Cover; 5. Vacuum solenoid valve; 6. Bracket; 7. Check valve; 70. Valve body; 71. Inlet channel; 72. Sealing gasket; 73. Sealing ball; 74. Sealing baffle; 75. Outlet; 76. Sliding channel; 8. Drain pipe; 10. Exhaust pipe. Detailed Implementation
[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.
[0019] like Figures 1-3 As shown, this application provides a freeze dryer, which is installed in a food processing plant and is mainly used for food freeze drying operations. Specifically, the freeze dryer includes a box 1 fixedly installed in the processing plant and a support 6 fixedly installed inside the box 1. A chamber 2 is fixedly installed on the upper end of the support 6. The chamber 2 has an inlet (not shown in the figure) facing outward so that the food to be freeze-dried can be placed in it. Meanwhile, multiple sets of storage cabinets 3 are fixedly installed inside the chamber 2. These storage cabinets 3 are used to store food to be freeze-dried. A cover 4 is hinged to one side of the chamber 1. The size of the cover 4 matches the size of the inlet of the chamber 2 so that the chamber 2 can be closed by the cover 4 when the freeze-drying operation begins. Therefore, before the freeze-drying operation begins, the user first places the material to be freeze-dried in the placement cabinet 3 inside the freeze dryer chamber 2, then closes the cover 4 to ensure the airtightness of the chamber 2, and finally starts the freeze dryer to prepare for the freeze-drying process. To enable automatic venting and drainage during freeze-drying operations, such as Figure 1 and Figures 4-6 As shown, an exhaust pipe 10 is fixedly installed on the outside of the cabin 2, and a vacuum solenoid valve 5 is fixedly installed on the exhaust pipe 10. The vacuum solenoid valve 5 is controlled by an external main control board through a power board, so that the opening and closing of the vacuum solenoid valve 5 can be controlled by the main control board. When the vacuum solenoid valve 5 is opened, gas is introduced into the cabin 2 to achieve pressure balance inside and outside the cabin 2. Meanwhile, a drain pipe 8 is fixedly installed at the lower end of the chamber 2. The drain pipe 8 is used to drain the water generated during the freeze-drying process. In order to carry out automatic drainage and venting operations, a one-way valve 7 is fixedly installed on the drain pipe 8. The one-way valve 7 is used to ensure that the drain pipe 8 can be sealed well under vacuum conditions, and at the same time, water flow is allowed to pass through when venting is carried out when the air pressure is balanced. The one-way valve 7 includes a valve body 70 fixedly mounted on the drain pipe 8, and an inlet channel 71 is provided at one end inside the valve body 70. The inlet channel 71 is connected to the drain pipe 8 so that water inside the cabin 2 can be introduced into the inlet channel 71 through the drain pipe 8. Furthermore, an outlet 75 is fixedly provided at the other end inside the valve body 70. The outlet 75 is used to drain the moisture inside the valve body 70. At the same time, a sliding channel 76 is fixedly provided between the outlet 75 and the inlet channel 71. A sealing ball 73 is slidably provided inside the sliding channel 76. When the air pressure is balanced, the sealing ball 73 moves towards the outlet 75 by gravity or external force. In a vacuum state, the sealing ball 73 moves towards the inlet channel 71. Meanwhile, a sealing baffle 74 is fixedly installed at the connection between the sliding channel 76 and the outlet 75, and a sealing gasket 72 is fixedly installed at the connection between the sliding channel 76 and the inlet channel 71. Thus, when the air pressure is balanced, the sealing ball 73 moves towards the outlet 75 under the action of gravity or external force, forming a certain gap with the sealing gasket 72, thereby allowing water or gas to pass through. Under vacuum conditions, the sealing ball 73 moves towards the inlet channel 71 until it is tightly fitted with the sealing gasket 72, thereby achieving a sealing effect. Therefore, when the freeze dryer starts working and enters the freeze drying process, a vacuum environment will be formed inside the freeze dryer. Under the vacuum state, a negative pressure will also be formed inside the valve body 70 of the one-way valve 7. At this time, the sealing ball 73 will approach the sealing gasket 72 under the external atmospheric pressure until the sealing ball 73 and the sealing gasket 72 are tightly fitted, ensuring the good sealing performance of the one-way valve 7 under the vacuum state, preventing external air from entering the freeze dryer, maintaining the vacuum environment, and ensuring the freeze drying process. When the freeze-drying process is complete and the freeze dryer needs to perform venting and drainage operations, the main control board instructs the power board to power on, controlling the vacuum solenoid valve 5 to open and introduce gas into the chamber 2, so that the air pressure inside and outside the chamber 2 reaches equilibrium. At the same time, the internal pressure of the valve body 70 of the one-way valve 7 gradually reaches equilibrium with the external atmospheric pressure. As the pressure reaches equilibrium, the sealing ball 73 moves towards the outlet 75 under the action of gravity or external force, so that a certain gap is created between the sealing ball 73 and the sealing gasket 72. Gas and liquid can then flow through this gap from the inlet channel 71 of the one-way valve 7 to the outlet 75, realizing the venting and drainage functions.
[0020] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A freeze dryer, characterized in that: include: Box (1); A chamber (2) is installed inside the box (1), and the outside of the chamber (2) has a vacuum solenoid valve (5) and a one-way valve (7), the one-way valve (7) comprising: Valve body (70), which is mounted on the outside of the cabin (2); An inlet channel (71) is installed at one end of the valve body (70); An outlet (75) is installed at the other end of the valve body (70); A sliding channel (76) is installed between the inlet channel (71) and the outlet (75); A sealing gasket (72) is installed at the connection between the inlet channel (71) and the sliding channel (76); A sealing ball (73) is installed in the sliding channel (76); A sealing baffle (74) is installed at the connection between the outlet (75) and the sliding channel (76).
2. The freeze dryer according to claim 1, characterized in that: An exhaust pipe (10) is fixedly installed on the outside of the cabin (2), and the exhaust pipe (10) is fixedly connected to the vacuum solenoid valve (5).
3. The freeze dryer according to claim 1, characterized in that: A drain pipe (8) is fixedly installed at the lower end of the cabin (2). The drain pipe (8) is fixedly connected to the one-way valve (7). The inlet channel (71) is connected to the drain pipe (8). The sealing ball (73) is slidably installed in the sliding channel (76).
4. A freeze dryer according to claim 1, characterized in that: The box (1) is fixedly provided with a bracket (6), and the cabin (2) is located on the upper end of the bracket (6).
5. A freeze dryer according to claim 1, characterized in that: The cabin (2) is equipped with multiple sets of storage cabinets (3).
6. A freeze dryer according to claim 1, characterized in that: The cabin (2) has an inlet, and a cover (4) is hinged to one side of the box (1), the size of which matches the size of the inlet of the cabin (2).