Brazing plate layer assembly of freeze dryer

Abstract

The brazing plate layer assembly comprises a mounting part, a plurality of mounting structures and plate layer structures, the number of the plate layer structures is the same as that of the mounting structures, the mounting structures are mounted at different heights of the mounting part, and adjusting mechanisms are formed between the mounting part and the mounting structures. The plate layer structures are detachably installed on the installation structures, and the adjusting mechanisms are suitable for adjusting the interval between every two adjacent installation structures and fixing the installation structures after adjustment. By adjusting the interval between the mounting structures, the interval between the plate layer interfaces after mounting can be adjusted, so that the distance between the plate layer structures can be more suitable for the container height of a dried product.

Description

Technical Field

[0001] This application relates to the field of freeze dryer technology, and in particular to a brazed plate layer assembly for a freeze dryer. Background Technology

[0002] A number of baffles are typically installed in freeze dryers. Their main functions include: First, the baffles change the direction of compressed air flow, transforming it from a horizontal to a turbulent flow, thereby improving the convective heat transfer efficiency between the hot and cold air streams. Second, tiny condensed water droplets continuously impact the baffles during airflow, gradually increasing in size. The frequent changes in direction generate a centrifugal effect, causing the water droplets to separate from the air under gravity and inertia. Third, the baffles lengthen the path of hot and cold air in the precooler, increasing the contact time and making heat exchange more complete. Finally, the baffles change the flow direction of the hot and cold air streams, transforming it from co-current convection to diagonal convection, thus improving the convective heat transfer coefficient. During the operation of the freeze dryer, the cooling medium achieves its cooling effect by entering the inner cavity of the plates. Typically, guide plates are installed in the inner cavity to guide the flow direction of the cooling medium and ensure temperature uniformity in all areas of the plates. In current technology, a plate layer typically consists of a top panel, a bottom panel, a flow guide plate, and a sealing plate. Under the same conditions, vacuum brazed plates have a significant advantage in terms of smaller gaps compared to plug-welded plates and hook-welded plates. Therefore, plate layer assemblies are often brazed plates.

[0003] When plate-and-tube assemblies are installed in a freeze dryer, they are typically housed within a frame within the dryer, and their positions are fixed due to the frame. However, the size of vials used to hold pharmaceuticals varies depending on the drug, so the fixed installation position means that the distance between multiple layers of vials cannot be adjusted. If the vials are small and the plate spacing is too large, it will result in a waste of production space; if the vials are too large and the plate spacing is too small, they cannot be used. Summary of the Invention

[0004] The purpose of this application is to provide a brazing plate layer assembly for a freeze dryer.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a brazed plate layer assembly for a freeze dryer, comprising a mounting part, multiple mounting structures, and the same number of plate layer structures as the mounting structures. The multiple mounting structures are mounted at different heights on the mounting part. An adjustment mechanism is formed between the mounting part and the mounting structures. The plate layer structures are detachably mounted on the mounting structures. The adjustment mechanism is adapted to adjust the interval between two adjacent mounting structures and fix the mounting structures after adjustment.

[0006] As a preferred embodiment, the mounting part includes a transmission rod, and two plate structures are provided. A slider is provided on the side of the top plate structure, and the transmission rod and the slider are threadedly connected. The bottom plate structure is fixedly connected to the transmission rod. The slider and the transmission rod form the adjustment structure.

[0007] As a preferred embodiment, the mounting part includes a transmission rod, and there are two or more plate structures. Except for the bottommost plate structure, all plate structures are provided with sliders, and the sliders are threadedly connected to the transmission rods. The transmission rods have multiple threaded sections from bottom to top, and the pitch of the multiple threaded sections increases sequentially from bottom to top. The bottom plate structure is fixedly connected to the transmission rods. The sliders and the transmission rods form the adjustment structure.

[0008] As a preferred embodiment, the pitch of the multiple threaded sections of the transmission rod increases in a multiple relationship from bottom to top, with the ratio of the pitch of the first to nth sections to the pitch of the first section being 1, 2, 3, ..., n respectively.

[0009] As a preferred embodiment, the brazing plate assembly further includes a gas source interface, which is disposed perpendicular to the side of the plate structure, and the gas source interface is provided with a driving part to drive it to move closer to or away from the plate structure; the plate structure is slidably mounted on the mounting structure, and when the plate structure slides to a set position, the gas source interface approaches and abuts against the plate structure to fix the plate structure.

[0010] As a preferred embodiment, the drive unit is a cylinder.

[0011] As a preferred embodiment, the mounting structure includes a movable limiting part and a fixed limiting part, with the slider mounted on one side of the movable limiting part; both the movable limiting part and the fixed limiting part include two limiting blocks spaced vertically apart, and a limiting groove is formed between the two limiting blocks; the movable limiting part and the fixed limiting part together form four limiting grooves, and the inner walls of the four limiting grooves fit and limit the four sides of the plate structure.

[0012] As a preferred embodiment, a limiting plate is provided on the back of both the movable limiting part and the fixed limiting part.

[0013] As a preferred embodiment, the plate structure includes an upper panel, a lower panel, and a plurality of baffles disposed between the upper panel and the lower panel. Each baffle has a sealing plate on its outer periphery. The upper panel, the lower panel, the plurality of baffles, and the sealing plate are combined to form an inlet and outlet structure for gas to enter and exit at both ends on the same side of the plate structure.

[0014] Compared with the prior art, the beneficial effects of this application are as follows:

[0015] By adjusting the spacing between the installation structures, the spacing between the interfaces of the plate layers after installation can be adjusted, so that the distance between the plate layer structures can be more suitable for the container height of the dried product. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application.

[0017] Figure 2 yes Figure 1 A diagram from another angle.

[0018] Figure 3 yes Figure 2 A schematic diagram of the transmission rod.

[0019] Figure 4 yes Figure 1 Side view.

[0020] Figure 5 This is a schematic diagram of a plate structure.

[0021] Figure 6 This is a schematic diagram of the flow direction inside the plate structure.

[0022] In the diagram: 1. Mounting part; 2. Movable limiting part; 3. Air source interface; 4. Limiting groove; 5. Plate structure; 6. Fixed limiting part; 7. Limiting plate; 8. Transmission rod; 11. First threaded part; 12. Second threaded part; 13. Third threaded part; 14. Fourth threaded part; 51. Top panel; 52. Baffle plate; 53. Bottom panel; 54. Sealing plate. Detailed Implementation

[0023] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0025] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0026] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0027] Example:

[0028] Reference Figures 1 to 6 This embodiment proposes a brazed plate layer assembly for a freeze dryer, including a mounting part 1, multiple mounting structures, and the same number of plate layer structures 5 as the mounting structures. The multiple mounting structures are installed at different heights on the mounting part 1. An adjustment mechanism is formed between the mounting part 1 and the mounting structures. The plate layer structures 5 are detachably installed on the mounting structures. The adjustment mechanism is adapted to adjust the interval between two adjacent mounting structures and fix the mounting structures after adjustment. By adjusting the interval between the mounting structures, the interval between the plate layer interfaces after installation can be adjusted, thereby making the distance between the plate layer structures 5 more suitable for the container height of the product being dried.

[0029] The following presents two preferred implementation schemes for the regulating mechanism.

[0030] (1) The mounting part 1 includes a transmission rod 8 and two plate structures 5. A slider is provided on the side of the top plate structure 5, and the transmission rod 8 and the slider are threadedly connected. The bottom plate structure 5 is fixedly connected to the transmission rod 8. The slider and the transmission rod 8 form an adjustment structure. In this embodiment, only two plate structures 5 are provided, which is suitable for sample containers with large height or freeze dryers with small volume. When two plate structures 5 are provided, in order to ensure heat utilization, when the two plate structures 5 are close together, some of the heat dissipated by the plate structure 5 can be absorbed and utilized by the other plate structure 5. Therefore, even if the sample container is not high, the plate structure 5 can have a wide range of movement after installation. It is not recommended to set adjacent plate structures 5 too far apart. In this embodiment, it is obvious that the top plate structure 5 can be moved by the up and down movement of the slider, while the bottom plate structure 5 remains in the same position.

[0031] (2) The mounting section 1 includes a transmission rod 8 and two or more plate structures 5. Except for the bottom plate structure 5, all plate structures 5 are equipped with sliders, which are threadedly connected to the transmission rod 8. The transmission rod 8 has multiple threaded sections from bottom to top, and the pitch of the multiple threaded sections increases sequentially from bottom to top. The bottom plate structure 5 is fixedly connected to the transmission rod 8. The slider and the transmission rod 8 form an adjustment structure. By setting multiple threaded sections with different pitches, the default pitch of the threaded section inside the matching slider changes accordingly. When the transmission rod 8 is rotated, although the rotation angle of the transmission rod 8 is the same at all points, the different pitches result in different movement distances of the plate structures 5 at different positions. Obviously, the higher up the plate structure 5, the larger the pitch, and the more the slider rises when the transmission rod 8 rotates one revolution. If the pitch of the multiple threaded sections remains unchanged, the upper plate structures 5 will rise the same distance simultaneously, and the actual spacing between all the upper plate structures 5 will not change after adjustment. As the pitch increases upwards, it ensures that the spacing between every two adjacent plate structures 5 in the upper layer becomes larger. Of course, the same principle applies when the pitch is decreased.

[0032] According to the second scheme of the adjusting mechanism, further, the pitch of the multiple threaded sections of the transmission rod 8 can be set to increase in a multiple relationship from bottom to top, that is, the ratio of the pitch of the first to nth sections to the pitch of the first section is 1, 2, 3, ..., n respectively. Figure 3 As shown, the transmission rod 8 includes a first threaded part 11, a second threaded part 12, a third threaded part 13, and a fourth threaded part 14. It can be assumed that the pitch of the first threaded part 11 is 2cm. Assuming that the slider corresponding to the first threaded part 11 rises 2cm when rotating one revolution, the subsequent pitches are 4cm, 6cm, and 8cm respectively. In this way, between two adjacent plate structures 5, the upper plate structure 5 always moves 2cm more than the lower one when rotating one revolution. Assuming that the initial height of the plate structure at the first threaded part 11 is 0cm and the initial spacing between all plate structures is 1cm, the heights of the four plate structures from bottom to top after one revolution are 0+2, 1+4, 2+6, and 3+8 respectively. At this time, the spacing is obviously 3cm. Therefore, it can be ensured that the spacing between all plate structures 5 remains consistent after adjustment.

[0033] like Figure 2As shown, the brazing board assembly also includes an air source interface 3. The air source interface 3 is positioned perpendicular to the side of the board structure 5, and a drive unit is provided to move it closer to or away from the board structure 5. The board structure 5 is slidably mounted on the mounting structure, and when the board structure 5 slides to a set position, the air source interface 3 approaches and abuts against the board structure 5 to fix it in place. The air source interface 3 is the interface connected to an external source, allowing compressed air to enter and exit through the interior of the board structure 5. The air source interface 3 can be moved by the drive unit, such as... Figure 2 As shown, the plate structure 5 is inserted into the mounting structure from the left. When inserted into the appropriate position, the drive unit drives the air source interface 3 to abut against the plate structure 5, thus completing the connection of the air source. At the same time, the abutting action of the air source interface 3 can fix the plate structure 5 in this position of the mounting structure. The aforementioned drive unit is preferably a cylinder.

[0034] like Figure 1 As shown, the installation structure includes a movable limiting part 2 and a fixed limiting part 6. A slider is installed on one side of the movable limiting part 2. Both the movable limiting part 2 and the fixed limiting part 6 include two limiting blocks spaced vertically, and a limiting groove 4 is formed between the two limiting blocks. The movable limiting part 2 and the fixed limiting part 6 together form four limiting grooves 4. The inner walls of the four limiting grooves 4 fit and limit the four sides of the plate structure 5. To prevent the plate structure 5 from being over-installed, a limiting plate 7 is provided on the back of the movable limiting part 2 and the fixed limiting part 6 for support.

[0035] like Figure 5 , Figure 6 The plate structure 5 includes an upper panel 51, a lower panel 53, and multiple baffles 52 disposed between the upper panel 51 and the lower panel 53. Each baffle 52 has a sealing plate 54 on its outer periphery. The upper panel 51, lower panel 53, multiple baffles 52, and sealing plate 54 combine to form an inlet / outlet structure for gas entry and exit at both ends on the same side of the plate structure 5. Specific airflow guidance can be found in [reference needed]. Figure 6 In this way, the compressed airflow can enter and exit at both ends of the same side of the plate structure 5 after passing through the circulation guide of the inner cavity. The air inlet and outlet are connected to the air source interface 3, which helps to simplify the installation of the drive unit of the air source interface 3.

[0036] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A brazed plate layer assembly for a freeze dryer, characterized in that, The device includes a mounting section, multiple mounting structures, and the same number of plate structures as the mounting structures. The multiple mounting structures are mounted at different heights on the mounting section. An adjustment mechanism is formed between the mounting section and the mounting structures. The plate structures are detachably mounted on the mounting structures. The adjustment mechanism is adapted to adjust the interval between two adjacent mounting structures and fix the mounting structures after adjustment. The mounting part includes a transmission rod, and two plate structures are provided. A slider is provided on the side of the top plate structure, and the transmission rod and the slider are threadedly connected. The plate structure located at the bottom is fixedly connected to the transmission rod; the slider and the transmission rod form the adjustment mechanism; Alternatively, the mounting part may include a transmission rod, and the plate structure may have two or more components. Except for the bottommost plate structure, all plate structures may have sliders, which are threadedly connected to the transmission rods. The transmission rod may have multiple threaded sections from bottom to top, and the pitch of the multiple threaded sections may increase sequentially from bottom to top. The bottom plate structure may be fixedly connected to the transmission rods. The sliders and the transmission rods form the adjustment mechanism.

2. The brazed plate assembly of the freeze dryer as described in claim 1, characterized in that, The pitch of the threaded sections of the transmission rod increases in a multiple relationship from bottom to top, with the ratio of the pitch of the first to nth sections to the pitch of the first section being 1, 2, 3...n respectively.

3. The brazed plate assembly of the freeze dryer as described in claim 1, characterized in that, It also includes an air source interface, which is arranged perpendicular to the side of the plate structure, and the air source interface is provided with a driving part to drive it to move closer to or away from the plate structure; the plate structure is slidably installed on the mounting structure, and when the plate structure slides to a set position, the air source interface approaches and abuts the plate structure to fix the plate structure.

4. The brazed plate assembly of the freeze dryer as described in claim 3, characterized in that, The drive unit is a cylinder.

5. The brazed plate assembly of the freeze dryer as described in claim 1, characterized in that, The installation structure includes a movable limiting part and a fixed limiting part. The slider is installed on one side of the movable limiting part. Both the movable limiting part and the fixed limiting part include two limiting blocks that are spaced apart vertically. A limiting groove is formed between the two limiting blocks. The movable limiting part and the fixed limiting part together form four limiting grooves. The inner walls of the four limiting grooves fit and limit the four sides of the plate structure.

6. The brazed plate assembly of the freeze dryer as described in claim 5, characterized in that, Limiting plates are provided on the back of the movable limiting part and the fixed limiting part.

7. The brazed plate assembly of the freeze dryer as described in claim 3, characterized in that, The plate structure includes an upper panel, a lower panel, and a plurality of baffles disposed between the upper panel and the lower panel. Each baffle has a sealing plate on its outer periphery. The upper panel, the lower panel, the plurality of baffles, and the sealing plate are combined to form an inlet and outlet structure for gas to enter and exit at both ends on the same side of the plate structure.

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