A freeze-drying machine carrier tray structure with gradient cooling function
By designing a detachable partition and cover structure, the problem of dirt retention on the freeze dryer tray during cleaning was solved, achieving efficient cleaning and uniform cooling of the tray, and improving heat transfer efficiency and cooling effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU TAIFENG PHARMA CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-23
AI Technical Summary
Existing freeze dryer trays are prone to creating cleaning blind spots during washing, leading to dirt accumulation, affecting heat transfer efficiency and temperature control, and posing a risk of bacterial growth.
A freeze dryer tray structure with gradient cooling function was designed. The tray is easy to clean and the heat transfer efficiency is improved by using detachable partitions and cover plates. Cooling pipes and heat-conducting jackets are used to improve cooling efficiency and ensure that the container is cooled evenly.
It effectively prevents dirt from accumulating inside the tray, shortens cleaning time, enhances heat transfer efficiency, inhibits bacterial growth, and ensures uniform cooling of the container.
Smart Images
Figure CN224398273U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of freeze dryer tray technology, specifically a freeze dryer tray structure with gradient cooling function. Background Technology
[0002] A freeze dryer is a freeze-drying device designed specifically for small laboratories. Its core feature is the use of staged precise temperature control technology, which achieves the optimal freezing effect for samples by programmatically adjusting the temperature curve. This model is equipped with a detachable tray for easy cleaning and sample transfer. The freeze dryer also integrates an internal cooling liquid circulation system for the tray, which can directly deliver a cooling medium at the corresponding temperature to the tray to enhance heat transfer efficiency, thereby improving freezing uniformity and drying speed. It is suitable for the efficient processing of temperature-sensitive materials.
[0003] In the standard laboratory operating procedure, the temperature-sensitive material to be processed must first be placed in a special container. Then, these containers are arranged on the freeze dryer tray according to the experimental specifications. Finally, the entire container is placed into the freeze dryer chamber for programmed freeze drying.
[0004] Existing freeze dryer trays typically employ a fixed, partitioned structure, dividing the tray space into designated placement areas. This loading method ensures uniform container arrangement and allows for rapid and even cooling of the materials placed within the tray's contents. However, fixed-partition trays have certain structural drawbacks. When cleaning the tray, blind spots can easily form in the internal corners, allowing materials, impurities, or cleaning fluid to accumulate in the gaps between the partitions and the container base. This not only slows down the drying process but also easily leads to bacterial growth inside the tray and, due to the buildup of thermal resistance layers, can negatively impact the temperature control process in subsequent experiments. Therefore, we need a freeze dryer tray structure with gradient cooling functionality. Utility Model Content
[0005] The purpose of this invention is to provide a freeze dryer tray structure with gradient cooling function to solve the existing problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a freeze dryer tray structure with gradient cooling function, comprising a tray base and a partition plate, wherein the partition plate is placed inside the tray base, and the surface of the partition plate has multiple arrayed placement openings; two centrally symmetrically arranged limiting components are respectively installed on both sides of the tray base, and both limiting components are centrally symmetrically arranged shielding components; a cooling component is installed inside the tray base; each limiting component includes a vertical plate and a fixing block; multiple vertical plates are provided, and multiple vertical plates and fixing blocks are fixedly connected to one side of the tray base; a rotating rod is rotatably sleeved at the center of multiple vertical plates; a working cavity is opened inside the fixing block; one end of the rotating rod passes through the fixing block and is rotatably disposed inside the working cavity; a threaded rod is fixedly connected to one end of the rotating rod located in the working cavity; a push block is slidably connected to the inner wall of the working cavity; the threaded rod passes through the push block, and the threaded rod is threadedly connected to the external push block.
[0007] Preferably, the side wall of the tray seat has a sliding opening that extends into the interior of the fixed block and communicates with the working cavity. A wedge block is slidably connected inside the sliding opening. Two sets of springs are fixedly connected between the wedge block and the working cavity. The two sets of springs are located on both sides of the push block. A slot is provided on one side of the partition plate. The wedge block and the slot are engaged with each other. A rotating block is provided between the two upright plates. The rotating rod is fixedly sleeved at the center of the rotating block.
[0008] Preferably, the shielding assembly includes a worm gear, a connecting rod, and a discharge port. The worm gear is fixedly connected to the end of the rotating rod away from the fixed block. The connecting rod is rotatably sleeved on the upper side wall of the tray seat. The discharge port is opened on the lower side inner wall of the tray seat and extends to the outside and communicates with the outside. A worm wheel is fixedly connected to one end of the connecting rod, and the worm wheel and the worm gear mesh with each other. A cover plate is fixedly connected to both ends of the side wall of the connecting rod, and the cover plate matches the discharge port.
[0009] Preferably, the cooling component includes a cooling pipe and a heat-conducting sleeve. The cooling pipe is embedded in the tray base, and both the input and output ends of the cooling pipe extend to the outside of the tray base. Both the input and output ends of the cooling pipe are equipped with fluid connection ports. Multiple heat-conducting sleeves are provided, and multiple heat-conducting sleeves are fixedly connected to the lower end face of the partition plate. Each of the multiple heat-conducting sleeves corresponds to a multiple placement port.
[0010] Preferably, a limiting ring is fixedly connected to the upper part of the inner wall of the tray seat, and a buffer pad layer is provided on the upper end surface of the limiting ring.
[0011] Preferably, a limit block is fixedly connected to the inner wall of one side of the sliding port.
[0012] Preferably, a protective pad is provided on the lower part of the inner wall of the placement opening, and the protective pad is made of soft rubber.
[0013] Compared with the prior art, the beneficial effect of this utility model is: a freeze dryer tray structure with gradient cooling function.
[0014] (1) After the tray seat is used, the user can operate the rotating block and push block to move the wedge block in and out of the slot. When the wedge block enters the slot, the partition plate can be fixed. When the wedge block moves out of the slot, the partition plate and the tray seat can be separated, which makes it easy for the user to clean the partition plate and the inside of the tray seat. This prevents dirt from forming a heat insulation barrier inside the tray seat, thereby ensuring the heat transfer efficiency between the tray seat and the container. The clean inside of the tray seat can ensure rapid temperature transfer and avoid large deviations in the cooling rate due to local thermal resistance.
[0015] (2) When operating the rotating block, the cover plate can rotate under the transmission of the worm gear. When the wedge block moves into the slot, the partition plate is fixedly installed in the tray seat, and the cover plate can cover the outlet. When the wedge block moves out of the slot, the cover plate can rotate to expose the outlet, which can separate the partition plate and the tray seat. When cleaning the tray seat, the outlet is exposed, and the water flow can penetrate the side wall outlet to rinse the easily contaminated parts in the four corners. When the outlet is exposed, a drainage channel is formed, which allows the cleaning liquid and contaminants to flow out of the tray quickly, avoiding sewage accumulation. After cleaning, the opening is kept open to enhance air convection, accelerate the drying speed of the inner wall of the tray seat, and inhibit bacterial growth. When in use, the cover plate covers the outlet to reduce the loss of cold energy in the tray seat, ensure the cooling efficiency of the cooling pipe, and ensure that the container is cooled evenly. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a schematic diagram of the structure of the partition plate after disassembly.
[0018] Figure 3 This is a three-dimensional sectional view of the structure of this utility model;
[0019] Figure 4 This is a schematic diagram of the limiting component structure of this utility model;
[0020] Figure 5 This is a schematic diagram of the wedge block and slot structure of this utility model;
[0021] Figure 6 This is a schematic diagram of the shielding component structure of this utility model;
[0022] Figure 7 This is a schematic diagram of the cooling component structure of this utility model;
[0023] Figure 8 This is a schematic diagram of the cooling pipe structure of this utility model.
[0024] In the diagram: 1. Tray base; 2. Divider plate; 3. Placement port; 4. Limiting assembly; 401. Vertical plate; 402. Fixing block; 403. Rotating rod; 404. Working chamber; 405. Threaded rod; 406. Push block; 407. Sliding port; 408. Wedge block; 409. Spring; 410. Slot; 411. Rotating block; 5. Shielding assembly; 501. Worm gear; 502. Connecting rod; 503. Discharge port; 504. Worm wheel; 505. Cover plate; 6. Cooling assembly; 601. Cooling pipe; 602. Heat-conducting sleeve; 603. Fluid connection port; 7. Limiting ring; 8. Limiting block; 9. Protective pad. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] This utility model embodiment provides a freeze dryer tray structure with gradient cooling function, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The diagram shows a tray base 1 and a partition plate 2. The partition plate 2 is placed inside the tray base 1, and its surface has multiple arrayed placement openings 3. Two centrally symmetrically arranged limiting components 4 are installed on each side of the tray base 1. Both limiting components 4 are centrally symmetrically arranged with shielding components 5. A cooling component 6 is installed inside the tray base 1. The limiting components 4 include upright plates 401 and fixing blocks 402. Multiple upright plates 401 are provided, and multiple upright plates 401 and fixing blocks 402 are fixed. Connected to one side of the tray base 1, a rotating rod 403 is rotatably sleeved at the center of multiple upright plates 401. A working cavity 404 is opened in the fixed block 402. One end of the rotating rod 403 passes through the fixed block 402 and is rotatably set in the working cavity 404. A threaded rod 405 is fixedly connected to one end of the rotating rod 403 in the working cavity 404. A push block 406 is slidably connected to the inner wall of the working cavity 404. The threaded rod 405 passes through the push block 406, and the threaded rod 405 and the external push block 406 are threadedly connected.
[0027] Furthermore, the materials are placed into the containers in sequence, and then the containers are inserted into the placement port 3. The bottom of the containers is in direct contact with the bottom of the tray seat 1. The partition plate 2 and the placement port 3 work together to make the containers evenly spaced in an array, avoiding airflow obstruction, shortening the heat conduction path during freeze drying, accelerating heat transfer, and improving cooling efficiency. After the tray seat 1 is used, the containers are taken out in sequence. Then the user operates the rotating block 411, the threaded rod 405 rotates, and the push block 406 moves towards the upright plate 401.
[0028] It is worth noting that: two centrally symmetrical limiting components 4 are installed on both sides of the tray base 1. The two limiting components 4 are centrally symmetrical with the intersection of the two lines of symmetry of the tray base 1 as the corresponding point. The same applies to the shielding component 5.
[0029] In a further preferred embodiment of this utility model, such as Figure 3 , Figure 4 and Figure 5 As shown, the side wall of the tray base 1 has a sliding opening 407, which extends into the interior of the fixed block 402 and communicates with the working cavity 404. A wedge block 408 is slidably connected inside the sliding opening 407. Two sets of springs 409 are fixedly connected between the wedge block 408 and the working cavity 404. The two sets of springs 409 are located on both sides of the push block 406. A slot 410 is provided on one side of the partition plate 2. The wedge block 408 and the slot 410 are engaged with each other. A rotating block 411 is provided between the two upright plates 401. A rotating rod 403 is fixedly sleeved at the center of the rotating block 411.
[0030] Furthermore, as the wedge block 408 gradually loses the restraint of the push block 406, the spring 409 returns to its original position and pulls the wedge block 408, allowing it to move out of the slot 410. At this point, the partition plate 2 can be removed from the tray seat 1. When the rotating block 411 is operated in the opposite direction, the push block 406 moves away from the upright plate 401, and one end of the push block 406 contacts the wedge block 408. The inclined surface of the wedge block 408 decomposes the pushing force, allowing the wedge block 408 to move into the slot 410, thus fixing the partition plate 2. By setting a detachable partition plate 2 and tray seat 1, it is convenient for users to clean the interior of the partition plate 2 and tray seat 1, preventing dirt from forming a heat insulation barrier inside the tray seat 1, thereby ensuring the heat transfer efficiency between the tray seat 1 and the container. Moreover, a clean interior of the tray seat 1 can ensure rapid temperature transfer and avoid large deviations in the cooling rate due to local thermal resistance.
[0031] In a further preferred embodiment of this utility model, such as Figure 6 and Figure 7As shown, the shielding assembly 5 includes a worm gear 501, a connecting rod 502, and a discharge port 503. The worm gear 501 is fixedly connected to the end of the rotating rod 403 away from the fixed block 402. The connecting rod 502 is rotatably sleeved on the upper side wall of the tray seat 1. The discharge port 503 is opened on the lower side inner wall of the tray seat 1 and extends to the outside and communicates with the outside. One end of the connecting rod 502 is fixedly connected to a worm wheel 504, and the worm wheel 504 and the worm gear 501 mesh with each other. Both ends of the side wall of the connecting rod 502 are fixedly connected to a cover plate 505, and the cover plate 505 and the discharge port 503 are matched.
[0032] Furthermore, when operating the rotating block 411, the worm gear 501 at the other end of the rotating rod 403 rotates, and the worm wheel 504 can rotate. At this time, the cover plate 505 can rotate. Simultaneously, when the wedge block 408 is removed from the slot 410, the cover plate 505 rotates to expose the outlet 503. At this time, the partition plate 2 and the tray seat 1 are cleaned separately. When rinsing the tray seat 1, the water flow that cleans the tray seat 1 can penetrate the side wall outlet 503 to rinse the easily contaminated areas at the four corners inside the tray seat 1. When the outlet 503 is exposed, it forms a drainage channel, allowing the cleaning liquid and contaminants to flow out of the tray quickly, avoiding sewage accumulation. Compared with traditional trays that need to be tilted to empty sewage, this design... It significantly shortens drainage time and keeps the outlet 503 open after cleaning, enhances air convection, accelerates the drying speed of the inner wall of the tray seat 1, and inhibits bacterial growth. When the wedge block 408 moves into the slot 410, the partition plate 2 can be fixedly installed in the tray seat 1. The cover plate 505 can be rotated to cover the outlet 503. Covering the outlet 503 reduces the loss of cold energy, ensures the cooling efficiency of the cooling pipe 601, and ensures that the container is cooled evenly. The side wall of the cover plate 505 is provided with a sealing gasket. When the cover plate 505 is rotated to cover the outlet 503, the sealing gasket adheres to the side wall of the tray seat 1 to ensure a certain degree of sealing between the outlet 503 and the cover plate 505.
[0033] In a further preferred embodiment of this utility model, such as Figure 7 and Figure 8 As shown, the cooling component 6 includes a cooling pipe 601 and a heat-conducting sleeve 602. The cooling pipe 601 is embedded in the tray base 1. Both the input and output ends of the cooling pipe 601 extend to the outside of the tray base 1. Both the input and output ends of the cooling pipe 601 are equipped with fluid connection ports 603. Multiple heat-conducting sleeves 602 are provided. Multiple heat-conducting sleeves 602 are fixedly connected to the lower end face of the partition plate 2. Each of the multiple heat-conducting sleeves 602 corresponds to a multiple placement port 3.
[0034] Furthermore, the tray seat 1 is placed inside the freeze dryer, and the fluid connection port 603 is sequentially connected to the coolant output end and the coolant recovery end of the freeze dryer. Subsequently, the freeze dryer sends the coolant cooled to the specified temperature into the cooling pipe 601 to achieve cooling of the container inside the tray seat 1. The heat-conducting sleeve 602 can conduct heat from the bottom of the tray seat 1 to the side wall of the container, thereby further improving the cooling efficiency. The fluid connection port 603 is existing technology and is a device used to connect fluid pipelines. When used to transport coolant, the connection port achieves pipeline docking through a quick-plug structure. The internal valve core automatically opens to form a passage when connected, allowing the coolant to circulate under system pressure, thereby transporting the coolant discharged from the freeze dryer into the cooling pipe 601.
[0035] In a further preferred embodiment of this utility model, such as Figure 2 , Figure 3 and Figure 5 As shown, a limiting ring 7 is fixedly connected to the upper part of the inner wall of the tray seat 1. A buffer pad is provided on the upper end surface of the limiting ring 7. A limiting block 8 is fixedly connected to the inner wall of one side of the sliding port 407. A protective pad 9 is provided on the lower part of the inner wall of the placement port 3. The protective pad 9 is made of soft rubber.
[0036] Furthermore, the limiting ring 7 is used to limit the partition plate 2. When the partition plate 2 is placed in the tray seat 1, the limiting ring 7 can support the partition plate 2, ensuring that the partition plate 2 can be stably placed in the tray seat 1 during the fixing operation. The limiting block 8 in the sliding port 407 limits the wedge block 408, so that when the spring 409 resets and pulls the wedge block 408, the wedge block 408 can move to the designated position, so that the inclined surface of the wedge block 408 faces the push block 406, preventing the side wall of the wedge block 408 from being exposed, thereby preventing the push block 406 from contacting the inclined surface of the wedge block 408.
[0037] Working principle: Materials are sequentially placed into containers, which are then inserted into placement opening 3, with the bottom of the containers directly contacting the bottom of tray 1. The partition plate 2 and placement opening 3 work together to ensure a uniform array of containers, preventing airflow obstruction, shortening the heat conduction path during freeze-drying, accelerating heat transfer, and improving cooling efficiency. Tray 1 is then placed inside the freeze dryer, and the fluid connection port 603 is sequentially connected to the coolant output and recovery ends of the freeze dryer. The freeze dryer then sends coolant into the cooling pipe 601 to cool the containers inside tray 1. After use, tray 1 is removed, and the user operates rotating block 411. When the threaded rod 405 rotates, the push block 406 moves closer to the vertical plate 401, and the wedge block 408 gradually loses the restraint of the push block 406. The spring 409 resets and pulls the wedge block 408, allowing it to move out of the slot 410. At this point, the partition plate 2 can be removed from the tray seat 1. When the rotating block 411 is operated in the opposite direction, the push block 406 moves away from the vertical plate 401, and one end of the push block 406 contacts the wedge block 408. The wedge block 408 is subjected to a pushing force, which is decomposed by the inclined surface of the wedge block 408, allowing it to move into the slot 410 and thus fixing the partition plate 2. By setting a detachable partition plate 2 and tray seat 1, The user cleans the interior of the partition plate 2 and the tray seat 1, preventing dirt from forming a heat insulation barrier inside the tray seat 1, thus ensuring efficient heat transfer between the tray seat 1 and the container. A clean interior of the tray seat 1 ensures rapid temperature transfer, avoiding significant deviations in cooling rate due to localized thermal resistance. When operating the rotating block 411, the worm gear 501 at the other end of the rotating rod 403 rotates, causing the worm wheel 504 to rotate. At this time, the cover plate 505 can rotate. Simultaneously, when the wedge block 408 moves out of the slot 410, the cover plate 505 rotates to expose the outlet 503, allowing the partition plate 2 and the tray seat 1 to be cleaned separately. When rinsing the tray seat 1, the water flow can penetrate the side walls. The outlet 503 is used to rinse the four corners of the tray seat 1 where dirt can easily accumulate. When the outlet 503 is exposed, it forms a drainage channel, allowing the cleaning liquid and contaminants to flow out of the tray quickly, preventing sewage accumulation. Compared with traditional trays that need to be tilted to empty sewage, this design significantly shortens the drainage time. After cleaning, the outlet 503 is kept open to enhance air convection, accelerate the drying speed of the inner wall of the tray seat 1, and inhibit bacterial growth. When the wedge block 408 is moved into the slot 410, the partition plate 2 can be fixedly installed in the tray seat 1. The cover plate 505 can be rotated to cover the outlet 503. Covering the outlet 503 reduces the loss of cold energy, ensures the cooling efficiency of the cooling pipe 601, and ensures that the container is cooled evenly.
[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A freeze dryer tray structure with gradient cooling function, comprising a tray base (1) and a partition plate (2), characterized in that: The partition plate (2) is placed inside the tray base (1). The surface of the partition plate (2) has multiple arrayed placement openings (3). Two centrally symmetrical limiting components (4) are installed on both sides of the tray base (1). Both limiting components (4) are centrally symmetrically equipped with shielding components (5). A cooling component (6) is installed inside the tray base (1). The limiting component (4) includes a vertical plate (401) and a fixing block (402). Multiple vertical plates (401) are provided. Multiple vertical plates (401) and fixing blocks (402) are fixedly connected to the tray base. (1) On one side, a rotating rod (403) is rotatably sleeved at the center of a plurality of upright plates (401). A working cavity (404) is opened in the fixed block (402). One end of the rotating rod (403) passes through the fixed block (402) and is rotatably disposed in the working cavity (404). A threaded rod (405) is fixedly connected to one end of the rotating rod (403) located in the working cavity (404). A push block (406) is slidably connected to the inner wall of the working cavity (404). The threaded rod (405) passes through the push block (406), and the threaded rod (405) and the external push block (406) are threadedly connected.
2. The freeze dryer tray structure with gradient cooling function according to claim 1, characterized in that: The side wall of the tray seat (1) is provided with a sliding opening (407), which extends into the interior of the fixed block (402) and communicates with the working cavity (404). A wedge block (408) is slidably connected in the sliding opening (407). Two sets of springs (409) are fixedly connected between the wedge block (408) and the working cavity (404). The two sets of springs (409) are located on both sides of the push block (406). A slot (410) is provided on one side of the partition plate (2). The wedge block (408) and the slot (410) are engaged with each other. A rotating block (411) is provided between the two upright plates (401). The rotating rod (403) is fixedly sleeved at the center of the rotating block (411).
3. The freeze dryer tray structure with gradient cooling function according to claim 1, characterized in that: The shielding assembly (5) includes a worm gear (501), a connecting rod (502), and a discharge port (503). The worm gear (501) is fixedly connected to one end of the rotating rod (403) away from the fixed block (402). The connecting rod (502) is rotatably sleeved on the upper side wall of the tray seat (1). The discharge port (503) is opened on the lower side inner wall of one side of the tray seat (1). The discharge port (503) extends to the outside and communicates with the outside. One end of the connecting rod (502) is fixedly connected to a worm wheel (504). The worm wheel (504) and the worm gear (501) mesh with each other. Both ends of the side wall of the connecting rod (502) are fixedly connected to a cover plate (505). The cover plate (505) and the discharge port (503) are matched.
4. The freeze dryer tray structure with gradient cooling function according to claim 1, characterized in that: The cooling component (6) includes a cooling pipe (601) and a heat-conducting sleeve (602). The cooling pipe (601) is embedded in the tray base (1). The input and output ends of the cooling pipe (601) extend to the outside of the tray base (1). The input and output ends of the cooling pipe (601) are equipped with fluid connection ports (603). Multiple heat-conducting sleeves (602) are provided. Multiple heat-conducting sleeves (602) are fixedly connected to the lower end face of the partition plate (2). Multiple heat-conducting sleeves (602) correspond one-to-one with multiple placement ports (3).
5. The freeze dryer tray structure with gradient cooling function according to claim 1, characterized in that: A limiting ring (7) is fixedly connected to the upper part of the inner wall of the tray seat (1), and a buffer pad layer is provided on the upper end surface of the limiting ring (7).
6. The freeze dryer tray structure with gradient cooling function according to claim 2, characterized in that: A limiting block (8) is fixedly connected to the inner wall of one side of the sliding port (407).
7. The freeze dryer tray structure with gradient cooling function according to claim 1, characterized in that: The lower part of the inner wall of the placement port (3) is provided with a protective pad (9), and the protective pad (9) is made of soft rubber.