Freeze-drying plate layer structure

Abstract

The invention discloses a freeze-drying plate layer structure which comprises a frame and a plurality of flow guide parts arranged in an area defined by the frame, the flow guide parts form an S-shaped flow channel, a heat exchange medium inlet and a heat exchange medium outlet are formed in the frame, a flow guide part is arranged in the area defined by the frame, and the flow guide part is arranged in the area defined by the frame. And the flowing area of the heat exchange medium covers at least one corner area of the frame. The flow guide part is further arranged in the area defined by the frame, the flow area of the heat exchange medium covers the corner area through the flow guide part, the structure is simple, the dead angle area in the freeze-drying plate layer can be eliminated, and then the uniformity of the surface temperature of the freeze-drying plate layer is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of freeze-dryer, in particular to a freeze-dry plate layer structure. BACKGROUND

[0002] Different from the freeze-drying of medicine in the Westlin bottle or freeze-drying tray, the raw medicine is generally freeze-dried directly on the freeze-dry plate layer. In order to ensure the uniformity of the freeze-drying effect of the raw medicine, the temperature uniformity of the surface of the freeze-dry plate layer is required to be very high. Referring to the technical solutions disclosed in the patent documents CN205119768U, DE102015216725A1 and WO2007085869A1, the existing freeze-dry plate layer generally comprises an upper panel and a lower panel, a sealing edge strip is arranged between the upper panel and the lower panel, a heat exchange medium inlet and a heat exchange medium outlet (the heat exchange medium is, for example, silicone oil) are arranged on the edge strip, and a plurality of flow guide pipes are arranged in the area enclosed by the edge strip to increase the area through which the heat exchange medium flows and prolong the time during which the heat exchange medium stays inside the plate layer, so that the temperature of the upper surface of the plate layer is as uniform as possible.

[0003] The temperature uniformity of most areas of the upper surface of the existing freeze-dry plate layer can meet the requirements, but the heat exchange medium is difficult to cover the corner of the plate layer, that is, there is a dead angle, resulting in a difference in temperature between the corner of the plate layer and other areas, so further improvement is needed. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a freeze-dry plate layer structure which is simple in structure, conducive to eliminating dead angles and improving the temperature uniformity of the surface of the plate layer.

[0005] To solve the above technical problems, the following technical solutions are adopted: A freeze-dry plate layer structure comprises a frame and a plurality of flow guide members arranged in the area enclosed by the frame, the plurality of flow guide members form an S-shaped flow channel, a heat exchange medium inlet and a heat exchange medium outlet are arranged on the frame, and a flow guide part is arranged in the area enclosed by the frame to cover at least one corner area of the frame with the flow area of the heat exchange medium.

[0006] As a further improvement of the above technical solution, the frame comprises a first frame, the heat exchange medium inlet is arranged at the first end of the first frame, and the flow guide part comprises a first flow guide plate arranged at the first end of the flow guide member close to the first frame and extending towards the heat exchange medium inlet.

[0007] As a further improvement to the above technical solution: the frame includes a second frame, the heat exchange medium outlet is located at the first end of the second frame, the flow guide includes a second flow guide plate corresponding to the second end of the second frame, and the second flow guide plate is located between the two flow guide members near the second frame.

[0008] As a further improvement to the above technical solution: the flow guide includes a third flow guide plate, which is disposed between the second end of the first frame and the second end of the flow guide near the first frame.

[0009] As a further improvement to the above technical solution: the first frame, the second frame and the guide are arranged in parallel, and the frame further includes a third frame disposed between the first frame and the second frame, the third frame being arranged perpendicular to the first frame.

[0010] As a further improvement to the above technical solution: the inner sides of the first frame and the second frame are provided with a first groove, the inner side of the third frame is provided with a plurality of second grooves spaced apart, and the protrusion between two adjacent second grooves is connected to the guide member.

[0011] As a further improvement to the above technical solution: the guide element is a square tube.

[0012] As a further improvement to the above technical solution: the square tube has beveled sections at both ends.

[0013] As a further improvement to the above technical solution: the flow guide is formed by bending the flow guide member.

[0014] A freeze-drying plate structure includes a frame. A first flow guide and a second flow guide are alternately arranged within the area enclosed by the frame. A first end of the first flow guide is connected to the frame and a second end has a gap with the frame. A first end of the second flow guide has a gap with the frame and a second end is connected to the frame. The first flow guide and the second flow guide form an S-shaped flow channel. A heat exchange medium inlet and a heat exchange medium outlet are provided on the frame. A flow guide portion is provided within the area enclosed by the frame so that the flow area of ​​the heat exchange medium covers at least one corner area of ​​the frame.

[0015] Compared with the prior art, the advantages of the present invention are as follows: The freeze-drying plate structure disclosed in this invention further includes a flow guide in the area enclosed by the frame. The flow guide allows the flow area of ​​the heat exchange medium to cover the corner area. The structure is simple and helps to eliminate dead corner areas inside the freeze-drying plate, thereby improving the uniformity of the surface temperature of the freeze-drying plate.

[0016] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of Embodiment 1 of the freeze-dried plate structure of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the first border in this invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the third border in this invention.

[0020] Figure 4 This is a schematic diagram of Embodiment 2 of the freeze-dried plate structure of the present invention.

[0021] The labels in the diagram represent: 1. Frame; 11. Heat exchange medium inlet; 12. Heat exchange medium outlet; 13. First frame; 14. Second frame; 15. Third frame; 16. First groove; 17. Second groove; 18. Protrusion; 2. Flow guide; 21. Sloping part; 22. First flow guide; 23. Second flow guide; 3. Flow guide section; 31. First flow guide plate; 32. Second flow guide plate; 33. Third flow guide plate; 4. Corner area. Detailed Implementation

[0022] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1 Figures 1 to 3 This invention illustrates an embodiment of the freeze-drying plate structure. The freeze-drying plate structure of this embodiment includes a frame 1 and a plurality of flow guides 2 disposed within the area enclosed by the frame 1. The plurality of flow guides 2 form an S-shaped flow channel (see details). Figure 1 In this embodiment, the S-shaped flow channel is a dual-channel S-shaped flow channel. After the heat exchange medium enters from the heat exchange medium inlet 11 on the right side, it flows back and forth in the up-down direction and finally flows out from the heat exchange medium outlet 12 on the left side. The frame 1 is provided with a heat exchange medium inlet 11 and a heat exchange medium outlet 12. A flow guide 3 is provided in the area enclosed by the frame 1 so that the flow area of ​​the heat exchange medium covers at least one corner area 4 of the frame 1. See details. Figure 1 In this embodiment, the freeze-drying plate layer has a rectangular structure, and the heat exchange medium can be silicone oil or the like.

[0027] In this embodiment, the freeze-drying plate structure is further provided with a flow guide 3 in the area enclosed by the frame 1. The flow guide 3 allows the flow area of ​​the heat exchange medium to cover the corner area 4. The structure is simple and helps to eliminate dead corner areas inside the freeze-drying plate, thereby improving the uniformity of the surface temperature of the freeze-drying plate.

[0028] Furthermore, in this embodiment, the frame 1 includes a first frame 13, and the heat exchange medium inlet 11 is located at the first end of the first frame 13. Figure 1 The upper part of the guide section 3 includes a first guide plate 31, which is disposed at the first end of the guide member 2 near the first frame 13. Figure 1 The first guide plate 31 extends from its upper end to the heat exchange medium inlet 11. Without the first guide plate 31, the heat exchange medium entering from the heat exchange medium inlet 11 tends to flow from right to left, resulting in less heat exchange medium flowing downwards in the area between the first guide member 2 on the right and the first frame 13. Therefore, by setting the first guide plate 31, a portion of the heat exchange medium entering from the heat exchange medium inlet 11 flows from right to left, while the other portion flows downwards, which helps to achieve a uniform distribution of the heat exchange medium in the corner area 4 at the upper right corner of the plate.

[0029] Furthermore, in this embodiment, the frame 1 includes a second frame 14, and the heat exchange medium outlet 12 is located at the first end of the second frame 14. Figure 1 The upper part of the flow guide 3 includes a second flow guide plate 32 corresponding to the second end of the second frame 14 (i.e., the second flow guide plate 32 corresponds to the lower end of the flow guide 3). The second flow guide plate 32 is disposed between two flow guide members 2 near the second frame 14. Under the guidance of the second flow guide plate 32, a portion of the heat exchange medium can flow towards the corner area 4 at the lower left corner of the plate, which also helps to prevent the formation of vortices in the corner area 4 at the lower left corner, thereby keeping the temperature of the corner area 4 at the lower left corner consistent with that of other parts.

[0030] Furthermore, in this embodiment, the flow guiding section 3 includes a third flow guiding plate 33, which is disposed between the second end of the first frame 13 and the second end of the flow guiding member 2 near the first frame 13 (i.e., between the first flow guiding member 2 on the right and the first frame 13). Under the guidance of the third flow guiding plate 33, a portion of the heat exchange medium can flow towards the corner area 4 at the lower right corner of the plate, which also helps to prevent the formation of vortices in the corner area 4 at the lower right corner, thereby ensuring that the temperature of the corner area 4 at the lower right corner remains consistent with that of other parts.

[0031] It should be noted that the heat exchange medium outlet 12 located at the upper end of the second frame 14 corresponds to the corner area 4 at the upper left corner of the plate. Since the heat exchange medium will eventually flow out from here after heat exchange, a dead corner will not be formed in the corner area 4 at the upper left corner, and there is no need to set the flow guide 3. The structure is reasonable and effective.

[0032] In a preferred embodiment, the first frame 13, the second frame 14 and the flow guide 2 are arranged in parallel. The frame 1 also includes a third frame 15 disposed between the first frame 13 and the second frame 14. The third frame 15 is arranged perpendicular to the first frame 13, thereby forming a rectangular freeze-drying plate layer.

[0033] See details Figure 2 and Figure 3 In this embodiment, the inner side of the first frame 13 and the second frame 14 (i.e. the side opposite to the first frame 13 and the second frame 14) is provided with a first groove 16, and the inner side of the third frame 15 is provided with a plurality of second grooves 17 at intervals. The protrusion 18 between two adjacent second grooves 17 is connected to the flow guide 2, and the heat exchange medium can enter the first groove 16 and the second groove 17, which is beneficial to keep the temperature of the freeze-drying plate surface area corresponding to the first frame 13, the second frame 14 and the third frame 15 consistent with that of other parts. The structure is reasonable and effective.

[0034] In a preferred embodiment, the flow guide 2 is a square tube. The square tube has a large flow area and can fit into the upper and lower panels of the freeze-drying plate layer, thus providing good support for the upper and lower panels.

[0035] Furthermore, in this embodiment, the square tube is provided with inclined sections 21 at both ends, which helps to guide the heat exchange medium around the two ends of the square tube, reduce flow resistance, and realize flow along the S-shaped flow channel.

[0036] In a preferred embodiment, the flow guide 3 is formed by bending the flow guide 2, which reduces the welding process for the flow guide 3. Of course, in other embodiments, the flow guide 3 and the flow guide 2 can also be separate structures, which are welded and fixed separately.

[0037] Example 2 Figure 4 Another embodiment of the freeze-dried plate structure of the present invention is shown. The freeze-dried plate structure of this embodiment is basically the same as that of embodiment one, except that: In this embodiment, the freeze-drying plate structure includes a frame 1. A first flow guide 22 and a second flow guide 23 are alternately arranged in the area enclosed by the frame 1. The first end of the first flow guide 22 is connected to the frame 1 and there is a gap between the second end and the frame 1. The first end of the second flow guide 23 has a gap between the first end and the frame 1 and the second end is connected to the frame 1 (specifically, the upper end of the first flow guide 22 is connected to the upper third frame 15 and the lower end has a gap with the lower third frame 15, and the upper end of the second flow guide 23 has a gap with the upper third frame 15 and the lower end is connected to the lower third frame 15). The first flow guide 22 and the second flow guide 23 form an S-shaped flow channel. That is, in this embodiment, the S-shaped flow channel is a single-channel S-shaped flow channel. The frame 1 is provided with a heat exchange medium inlet 11 and a heat exchange medium outlet 12. The area enclosed by the frame 1 is provided with a flow guide 3 so that the flow area of ​​the heat exchange medium covers at least one corner area 4 of the frame 1 (e.g., the corner area at the lower right corner of the plate).

[0038] In this embodiment, the freeze-drying plate structure can also cover the corner area 4 with the flow guide 3. The structure is simple and helps to eliminate dead corner areas inside the freeze-drying plate, thereby improving the uniformity of the surface temperature of the freeze-drying plate.

[0039] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A freeze-drying plate structure, comprising a frame (1) and a plurality of flow guides (2) disposed within the area enclosed by the frame (1), the plurality of flow guides (2) forming an S-shaped flow channel, wherein the frame (1) is provided with a heat exchange medium inlet (11) and a heat exchange medium outlet (12), characterized in that: The area enclosed by the frame (1) is provided with a flow guide (3) so that the flow area of ​​the heat exchange medium covers at least one corner area (4) of the frame (1).

2. The freeze-dried plate structure according to claim 1, characterized in that: The frame (1) includes a first frame (13), the heat exchange medium inlet (11) is located at the first end of the first frame (13), and the flow guide (3) includes a first flow guide plate (31), the first flow guide plate (31) is located at the first end of the flow guide (2) near the first frame (13) and extends to the heat exchange medium inlet (11).

3. The freeze-dried plate structure according to claim 2, characterized in that: The frame (1) includes a second frame (14), the heat exchange medium outlet (12) is located at the first end of the second frame (14), and the flow guide (3) includes a second flow guide plate (32) corresponding to the second end of the second frame (14). The second flow guide plate (32) is located between the two flow guide members (2) near the second frame (14).

4. The freeze-dried plate structure according to claim 2, characterized in that: The flow guide (3) includes a third flow guide plate (33), which is disposed between the second end of the first frame (13) and the second end of the flow guide (2) near the first frame (13).

5. The freeze-dried plate structure according to claim 3 or 4, characterized in that: The first frame (13), the second frame (14) and the guide (2) are arranged in parallel. The frame (1) also includes a third frame (15) disposed between the first frame (13) and the second frame (14). The third frame (15) is arranged perpendicular to the first frame (13).

6. The freeze-dried plate structure according to claim 5, characterized in that: The inner sides of the first frame (13) and the second frame (14) are provided with a first groove (16), and the inner side of the third frame (15) is provided with a plurality of second grooves (17) spaced apart. The protrusion (18) between two adjacent second grooves (17) is connected to the guide (2).

7. The freeze-dried plate structure according to any one of claims 1 to 4, characterized in that: The guide element (2) is a square tube.

8. The freeze-dried plate structure according to claim 7, characterized in that: The square tube has beveled sections (21) at both ends.

9. The freeze-dried plate structure according to any one of claims 1 to 4, characterized in that: The flow guide (3) is formed by bending the flow guide (2).

10. A freeze-drying plate structure, comprising a frame (1), wherein a first flow guide (22) and a second flow guide (23) are alternately arranged within the area enclosed by the frame (1), wherein a first end of the first flow guide (22) is connected to the frame (1) and a gap exists between the second end and the frame (1), and a first end of the second flow guide (23) has a gap between the first end and the frame (1) and a second end is connected to the frame (1), wherein the first flow guide (22) and the second flow guide (23) form an S-shaped flow channel, and a heat exchange medium inlet (11) and a heat exchange medium outlet (12) are provided on the frame (1), characterized in that: The area enclosed by the frame (1) is provided with a flow guide (3) so that the flow area of ​​the heat exchange medium covers at least one corner area (4) of the frame (1).

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