Freeze dryer with built-in cold trap for direct water catching
By setting up a double-drained water trap pipe and scraping frost in the freeze dryer, the problem of uneven ice trapping efficiency is solved, the water trapping efficiency and the overall performance of the freeze dryer are improved, and energy consumption is reduced.
Patent Information
- Application Number
- CN202420242511.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-31
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-01-31
AI Technical Summary
The cold traps of existing freeze-dryers are uneven during the working process, especially the heat exchange efficiency of the cold trap is reduced, resulting in a decrease in ice trap efficiency. When drying at full load, the cold trap surface forms a thick frost layer, which affects the influence of Ice capture efficiency.
设计了一种内置冷阱直接捕水的冻干机，通过在冻干机主体内壁上设置进入管道和送出管道，并在两者之间设置双排捕水管，冷媒液体均匀通过捕水管进行热交换，同时在捕水管外侧安装刮除件，利用驱动件带动螺纹套和刮除件进行往复移动，刮除冰霜，保持冷阱高效工作。
It effectively improves the water trap efficiency of the cold trap, avoids the problem of uneven water trapping, maintains the efficient working state of the cold trap, shortens the freeze-drying time, and reduces energy consumption.
Smart Images
Figure CN222257290U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of freeze dryers, in particular to a freeze dryer with a built-in cold trap for directly capturing water. Background Art
[0002] Freeze drying technology is to freeze the water-containing material to a temperature below the eutectic point, so that the water in it turns into ice, and then sublime the ice into water vapor at an appropriate temperature and vacuum degree, and use a cold trap to condense the water vapor to obtain a dry product. When the freeze dryer is working, the vacuum degree of the drying box is provided by the vacuum machine, and the vacuum machine extracts the non-condensable gas, and the water vapor in the gas is completely captured by the cold trap. The amount of ice captured by the freeze dryer determines the maximum processing capacity of the freeze dryer.
[0003] Under the prior art, the cold trap of the freeze dryer is usually in the shape of a spiral tube. When working, the ice capturing efficiency is high at the front end of the cold trap, while the heat exchange efficiency is reduced at the rear end of the cold trap due to the refrigerant absorbing heat, thereby reducing the ice capturing efficiency and causing uneven ice capturing. At the same time, during the full-load drying process, the cold trap captures a large amount of water vapor and forms a thick frost layer on the surface of the cold trap. As the thickness of the ice layer increases, the temperature outside the ice layer gradually increases, causing the ice capturing efficiency of the cold trap to deteriorate. Therefore, there is room for improvement. Utility Model Content
[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technology.
[0005] To this end, the technical solution adopted by the utility model is: a freeze dryer with a built-in cold trap to directly capture water, including: a main module and a cold trap module, the main module includes a freeze dryer body, a sealing door hingedly installed on the freeze dryer body, and a mesh plate fixed on the inner wall of the freeze dryer body.
[0006] The cold trap module includes an inlet pipe fixed on the inner wall of one side of the freeze dryer body, an outlet pipe fixed on the inner wall of the other side of the freeze dryer body, two rows of water-catching pipes arranged in an array and connecting the inlet pipe and the outlet pipe, an inlet joint fixed at one end of the inlet pipe and extending out of the freeze dryer body, an outlet joint fixed at one end of the outlet pipe and extending out of the freeze dryer body, a scraping member slidably sleeved on the outer surface of the water-catching pipe, a threaded sleeve fixed at the top of the scraping member, and a driving member installed on the inner wall of the freeze dryer body and passing through the threaded sleeve.
[0007] In a preferred example, the utility model can be further configured as follows: the scraping member includes a scraping ring slidably sleeved on the outer side of the water catching pipe and a bottom plate fixed on the outer side of the scraping ring.
[0008] In a preferred example, the utility model can be further configured as follows: both ends of the scraper ring are arranged in an inclined surface, and the inner diameter of the scraper ring is equal to the outer diameter of the water catching pipe.
[0009] In a preferred example, the utility model can be further configured as follows: the driving member includes a threaded rod rotatably mounted on the inner wall of the freeze dryer body and a motor mounted on the outer surface of the freeze dryer body and having a shaft fixedly connected to the end of the threaded rod.
[0010] In a preferred example, the utility model can be further configured as follows: the threaded rod passes through the threaded sleeve, and the threaded rod and the threaded sleeve are meshed with each other.
[0011] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:
[0012] 1. In the utility model, an inlet pipe is fixed on the inner wall of one side of the freeze dryer body, an outlet pipe is fixed on the inner wall of the other side, and a double row of water catching pipes are arranged between the inlet pipe and the outlet pipe, one end of the water catching pipe is connected to the inlet pipe, and the other end is connected to the outlet pipe, so that when the cold trap is working, the refrigerant enters the water catching pipe evenly through the inlet pipe, enters the outlet pipe after heat exchange in the water catching pipe, shortens the length of the water catching pipe, avoids the problem of uneven water capture at the front and rear ends of the water catching pipe, effectively improves the water capture efficiency of the cold trap, and increases practical performance.
[0013] 2. In the utility model, a scraping member is arranged on the outside of the water collecting tube, and a threaded sleeve is fixed on the top of the scraping member, and a driving member is installed on the inner wall of the freeze dryer body. When working, the driving member drives the threaded sleeve to move back and forth, and the movement of the threaded sleeve drives the scraping member to move back and forth on the surface of the water collecting tube to scrape off the frost on the surface of the water collecting tube, so that the cold trap can maintain a high-efficiency working state, shorten the freeze-drying time, and reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 It is a cross-sectional schematic diagram of the utility model;
[0016] Figure 3 This is a schematic diagram of the cold trap module structure of the utility model;
[0017] Figure 4 It is a schematic diagram of the structure of the scraping member of the utility model.
[0018] Reference numerals:
[0019] 100, main body module; 110, freeze dryer body; 120, sealing door; 130, mesh plate;
[0020] 200, cold trap module; 210, inlet pipe; 220, outlet pipe; 230, water capture pipe; 240, inlet joint; 250, outlet joint; 260, scraper; 261, scraper ring; 262, bottom plate; 270, threaded sleeve; 280, driving member; 281, threaded rod; 282, motor. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.
[0022] Some embodiments of the present invention are described below in conjunction with the accompanying drawings.
[0023] Embodiment 1:
[0024] Combination Figure 1-4 As shown, this embodiment provides a freeze dryer with a built-in cold trap for directly capturing water, including: a main body module 100 and a cold trap module 200.
[0025] The main body module 100 includes a freeze dryer body 110 , a sealing door 120 hingedly mounted on the freeze dryer body 110 , and a mesh plate 130 fixed on the inner wall of the freeze dryer body 110 .
[0026] The freeze dryer body 110 is used for freeze drying operations, the sealing door 120 is used to open the freeze dryer body 110 , and the mesh plate 130 facilitates the air in the freeze dryer body 110 to contact with the cold trap module 200 .
[0027] The cold trap module 200 is used to capture water vapor in the freeze dryer body 110, and includes an inlet pipe 210 fixed on the inner wall of one side of the freeze dryer body 110, an outlet pipe 220 fixed on the inner wall of the other side of the freeze dryer body 110, two rows of water-catching pipes 230 arranged in an array and connecting the inlet pipe 210 and the outlet pipe 220, an inlet joint 240 fixed at one end of the inlet pipe 210 and extending out of the freeze dryer body 110, an outlet joint 250 fixed at one end of the outlet pipe 220 and extending out of the freeze dryer body 110, a scraper 260 slidably sleeved on the outer surface of the water-catching pipe 230, a threaded sleeve 270 fixed at the top of the scraper 260, and a driving member 280 installed on the inner wall of the freeze dryer body 110 and passing through the threaded sleeve 270.
[0028] The inlet pipe 210 and the outlet pipe 220 are symmetrically arranged and are used to install the water collecting pipe 230. One end of the water collecting pipe 230 is connected to the inlet pipe, and the other end is connected to the outlet pipe 220. During operation, the refrigerant liquid is sent into the water collecting pipe 230 through the inlet pipe 210, and heat is exchanged with the air in the freeze dryer body 110 in the water collecting pipe 230 to condense the air in the freeze dryer body 110. Then, the refrigerant liquid that absorbs the heat enters the outlet pipe 220 to be sent out, thereby shortening the length of the water collecting pipe 230 and avoiding the problem of uneven water capture at the front and rear ends of the water collecting pipe 230.
[0029] The inlet connector 240 is used to deliver the refrigerant liquid into the inlet pipe 210, and the outlet connector 250 is used to deliver the refrigerant liquid after absorbing heat.
[0030] The scraper 260 is used to scrape off frost on the surface of the water catching tube 230 to prevent it from affecting the ice catching efficiency. It includes a scraper ring 261 that is slidably sleeved on the outer surface of the water catching tube 230 and a bottom plate 262 fixed on the outer side of the scraper ring 261. The two ends of the scraper ring 261 are arranged in an inclined surface, and the inner diameter of the scraper ring 261 is equal to the outer diameter of the water catching tube 230, so that when the scraper ring 261 moves on the surface of the water catching tube 230, the frost on the surface of the water catching tube 230 can be scraped off. The bottom plate 262 is used to install the scraper ring 261 and drive the scraper ring 261 to move.
[0031] The driving member 280 is used to drive the scraper 260 to move, including a threaded rod 281 rotatably installed on the inner wall of the freeze dryer body 110 and a motor 282 installed on the outer surface of the freeze dryer body 110 and with its shaft fixedly connected to the end of the threaded rod 281. The threaded rod 281 passes through the threaded sleeve 270, and the threaded rod 281 and the threaded sleeve 270 are meshed with each other, so that when the motor 282 rotates, it can drive the threaded rod 281 to rotate, and the rotation of the threaded rod 281 drives the threaded sleeve 270 to move, and the movement of the threaded sleeve 270 drives the scraper 260 to move, thereby scraping off the frost on the surface of the water collection pipe 230.
[0032] The working principle and use process of the utility model are as follows: when in use, the gas in the freeze dryer body 110 enters the cold trap through the mesh plate 130 and contacts the surface of the water collecting pipe 230. The refrigerant liquid is sent into the inner cavity of the inlet pipe 210 through the inlet joint 240, and is evenly sent into the water collecting pipe 230 from the inner cavity of the inlet pipe 210. The refrigerant liquid exchanges heat with the air in the main body of the freeze dryer through the water collecting pipe 230, so that the air in the freeze dryer body 110 condenses. Then, the refrigerant liquid that has absorbed the heat enters the delivery pipe 220 and is delivered through the delivery joint 250. At the same time, the motor 282 is started, driving the threaded rod 281 to rotate. The rotation of the threaded rod 281 drives the threaded sleeve 270 to move. The movement of the threaded sleeve 270 drives the scraper 260 to move, and the frost attached to the surface of the water collecting pipe 230 is scraped off.
[0033] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A freeze dryer with a built-in cold trap for directly capturing water, comprising: A main body module (100) and a cold trap module (200), characterized in that the main body module (100) comprises a freeze dryer body (110), a sealing door (120) hingedly mounted on the freeze dryer body (110), and a mesh plate (130) fixed on the inner wall of the freeze dryer body (110); The cold trap module (200) comprises an inlet pipe (210) fixed on the inner wall of one side of the freeze dryer body (110), an outlet pipe (220) fixed on the inner wall of the other side of the freeze dryer body (110), two rows of water-collecting pipes (230) arranged in an array and connecting the inlet pipe (210) and the outlet pipe (220), an inlet joint (240) fixed on one end of the inlet pipe (210) and extending out of the freeze dryer body (110), an outlet joint (250) fixed on one end of the outlet pipe (220) and extending out of the freeze dryer body (110), a scraper (260) slidably sleeved on the outer surface of the water-collecting pipe (230), a threaded sleeve (270) fixed on the top of the scraper (260), and a driving member (280) installed on the inner wall of the freeze dryer body (110) and passing through the threaded sleeve (270).
2. A freeze dryer with a built-in cold trap for direct water capture according to claim 1, characterized in that: The scraping member (260) comprises a scraping ring (261) slidably sleeved on the outer side of the water collecting pipe (230) and a bottom plate (262) fixed on the outer side of the scraping ring (261).
3. A freeze dryer with a built-in cold trap for direct water capture according to claim 2, characterized in that: Both ends of the scraper ring (261) are arranged in the form of inclined surfaces, and the inner diameter of the scraper ring (261) is equal to the outer diameter of the water catching pipe (230).
4. A freeze dryer with a built-in cold trap for direct water capture according to claim 1, characterized in that: The driving member (280) comprises a threaded rod (281) rotatably mounted on the inner wall of the freeze dryer body (110), and a motor (282) mounted on the outer surface of the freeze dryer body (110) and having a shaft fixedly connected to the end of the threaded rod (281).
5. A freeze dryer with a built-in cold trap for direct water capture according to claim 4, characterized in that: The threaded rod (281) passes through the threaded sleeve (270), and the threaded rod (281) and the threaded sleeve (270) are meshed with each other.