Medical laboratory sample refrigerator and method

Abstract

This invention discloses a sample refrigerator and method for medical experiments, relating to the field of refrigerator technology. It includes a refrigerator body with multiple mounting slots. A lifting frame is disposed inside each mounting slot, and multiple placement holes are provided inside the lifting frame. An adjustment component is disposed at the bottom inner side of each mounting slot, and a reset component is disposed between the lifting frame and the mounting slot. A ventilation slot is formed on the inner side of each mounting slot, and a cold air passage is disposed inside the bottom inner side of the refrigerator body. A sealing component is disposed between the cold air passage and the ventilation passage. Symmetrically arranged mounting blocks are fixedly mounted on the upper surface of the refrigerator body. This invention ensures convenient sample placement and removal within the lifting frame by using individual adjustment components within multiple mounting slots, while effectively controlling cold air loss through the cooperation of the reset component and the sealing component.

Description

Technical Field

[0001] This invention relates to the field of refrigerator technology, specifically to a sample refrigerator and method for medical experiments. Background Technology

[0002] In fields such as medical experiments, clinical testing, and biological sample research, the quality of sample storage directly affects the accuracy and reliability of experimental results. As a core storage device, medical laboratory sample refrigerators must simultaneously meet multiple requirements, including convenient sample retrieval, stable low-temperature environment, and control of cold air loss.

[0003] Existing medical laboratory sample refrigerators mostly adopt traditional drawer-type or shelf-type structures, which have many significant drawbacks in practical use:

[0004] Firstly, the convenience of sample retrieval is insufficient: In order to ensure the refrigeration effect, drawers or shelves are mostly sealed and the internal space is densely arranged. When a sample needs to be retrieved from a specific location, it is often necessary to pull the entire drawer or flip the adjacent samples. This is not only cumbersome to operate, but also easily leads to sample confusion and collision damage. It is especially unsuitable for the classification and storage of multiple types and small batches of samples.

[0005] Secondly, there is a serious problem with cold air loss: when the cabinet door is opened to retrieve samples, the interior of the refrigerator is directly connected to the external environment, and a large amount of cold air is rapidly leaked out, causing the temperature inside the cabinet to fluctuate rapidly. This not only affects the storage stability of other unretrieved samples, but also requires the refrigeration system to run at a high load continuously to restore the low temperature environment, resulting in energy waste. Although some refrigerators adopt a partitioned design, they lack a targeted sealing control structure, and opening a single area will still cause overall cold air loss.

[0006] Therefore, the present invention provides a sample refrigerator and method for medical experiments to solve the above-mentioned problems. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a sample refrigerator and method for medical experiments, solving the problems mentioned in the background section.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A sample refrigerator for medical experiments includes a refrigerator body, the refrigerator body having multiple mounting slots, a lifting frame being provided inside the mounting slots, and multiple placement holes being provided inside the lifting frame.

[0010] An adjustment component is provided at the bottom of the mounting slot, and a reset component is provided between the lifting frame and the mounting slot;

[0011] The inner side of the mounting slot is provided with a ventilation slot, and the inner bottom of the refrigerator body is provided with a cold air channel. A sealing component is provided between the cold air channel and the ventilation channel.

[0012] The upper surface of the refrigerator body is fixedly equipped with symmetrically arranged mounting blocks, and the mounting blocks are provided with lids.

[0013] Preferably, the adjustment component includes a drive groove formed at the bottom of the mounting groove, a rotating shaft is rotatably mounted inside the drive groove, an upper worm gear and two lifting arc plates are fixedly mounted on the rotating shaft, a worm is rotatably mounted on the side end face of the refrigerator body, and an adjustment wheel is fixedly mounted at one end of the worm.

[0014] Preferably, the sealing assembly includes two communicating grooves and a rotating groove formed inside the mounting groove. A rotating shaft is rotatably mounted inside the rotating groove. A lower worm gear is fixedly mounted on the rotating shaft. Communicating rotating plates are fixedly mounted at both ends of the rotating shaft. Communicating rotating plates are provided with communicating holes.

[0015] Preferably, the upper worm gear is positioned between the two lifting arc plates, the end of the worm away from the adjusting wheel extends sequentially through the drive groove and the connecting groove, the worm is driven by the upper worm gear and the lower worm gear respectively, the two ends of the rotating shaft extend into the interior of the two rotating grooves respectively, the connecting rotating plate rotates in contact with the rotating groove, and the ventilation groove and the cold air groove are connected through the connecting hole on the connecting rotating plate.

[0016] Preferably, the reset assembly includes a reset rotating groove formed on the lifting frame, a connecting rotating shaft is rotatably installed inside the reset rotating groove, a connecting rotating rod is fixedly installed on the connecting rotating shaft, a sliding groove is formed on the inner side of the mounting groove, a U-shaped frame plate is slidably installed inside the sliding groove, and a reset spring is fixedly connected to the side end face of the U-shaped frame plate.

[0017] Preferably, the end of the connecting rod away from the connecting shaft is rotatably connected to the inside of the U-shaped frame plate, and the end of the return spring away from the U-shaped frame plate is fixedly connected to the inside of the sliding groove.

[0018] Preferably, a refrigerator is fixedly installed on the refrigerator body, and an exhaust pipe is fixedly connected to the refrigerator. The end of the exhaust pipe away from the refrigerator is fixedly connected to the air duct.

[0019] Preferably, a handle is fixedly installed on the side end face of the box cover, and a protective pad is fixedly installed on the handle.

[0020] Preferably, both mounting blocks are provided with pin holes, and a pin is fixedly installed on the lid. The lid is rotatably connected to the refrigerator body through the pin holes and the pin.

[0021] A method for refrigerating samples in a medical laboratory sample refrigerator includes the following steps:

[0022] Step 1: When removing the sample, open the box cover, select the adjustment wheel corresponding to the sample to be removed and rotate it. This will drive the worm gear to rotate, thereby driving the lifting plate to push the lifting frame in the mounting slot and lift the sample.

[0023] Step 2: When the worm rotates, it will drive the lower worm wheel to rotate synchronously. The rotating lower worm wheel will drive the connecting plate to rotate 180 degrees through the rotating shaft. The cold air passage and the ventilation passage connected by the connecting hole will be closed by the rotating connecting plate after rotation. The cold air in the cold air passage will no longer enter the ventilation passage.

[0024] Step 3: After the samples are placed and removed, reverse the adjustment wheel. The lifting frame will push the U-shaped frame plate through the reaction force of the return spring. The U-shaped frame plate will push the raised lifting frame back to its original position through the connecting rod, ensuring that the lifting frame is inside the installation slot and that the lid can be closed with the refrigerator body.

[0025] This invention provides a sample refrigerator and method for medical experiments. Compared with the prior art, it has the following advantages:

[0026] 1. In this invention, when it is necessary to remove the sample from the placement hole, the lid is opened by the handle, and the adjustment wheel is selected in different positions according to different types of samples. By rotating the adjustment wheel, the worm gear is driven to rotate. The worm gear cooperates with the upper worm wheel, so that when the upper worm wheel rotates 180 degrees, it synchronously drives the lifting arc plate to push the lifting frame in the mounting slot to rise. The sample in the refrigerator body will be exposed from the refrigerator body as the lifting frame rises, making it easier for personnel to remove the sample from the lifting frame and effectively improving the sample retrieval and placement efficiency.

[0027] 2. In this invention, when the lifting frame is raised, in order to prevent excessive cold air from being discharged from the refrigerator body in the cold air duct, the worm gear will drive the lower worm wheel to rotate synchronously when the worm rotates. The rotating lower worm wheel will drive the connecting plate to rotate 180 degrees through the rotating shaft. The cold air duct and the ventilation duct connected by the connecting hole will be closed by the rotating connecting plate. The cold air in the cold air duct will no longer enter the ventilation duct, effectively preventing excessive loss of cold air.

[0028] 3. In this invention, after the sample is placed or removed, the lifting frame, which is lifted by the lifting arc plate, is no longer under force by reversing the adjustment wheel. The lifting frame will push the U-shaped frame plate through the reaction force of the return spring. The U-shaped frame plate will push the raised lifting frame back to its original position through the connecting rod, ensuring that the lifting frame is inside the installation slot, ensuring that the lid can be closed with the refrigerator body, and ensuring that the refrigerator body is kept in a stable and sealed state.

[0029] 4. This invention uses individual adjustment components in multiple mounting slots to adjust the position of the lifting frame, and at the same time uses the cooperation of the reset component and the sealing component to ensure convenient loading and unloading of samples in the lifting frame, while effectively controlling the loss of cold air. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0031] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0032] Figure 3 This is a front sectional view of the refrigerator body in this invention;

[0033] Figure 4 This is a schematic diagram of the reset component in this invention;

[0034] Figure 5 This is a partial sectional view of the refrigerator body in this invention;

[0035] Figure 6 This is a side sectional view of the refrigerator body in this invention;

[0036] Figure 7 This is a schematic diagram of the lifting frame in this invention;

[0037] Figure 8 This is a cross-sectional view of the connecting plate in this invention;

[0038] Figure 9 This is a cross-sectional view of the upper worm gear in this invention.

[0039] In the diagram: 1. Refrigerator body; 2. Mounting slot; 3. Lifting frame; 4. Placement hole; 5. Ventilation slot; 6. Cold air slot; 7. Mounting block; 8. Cover; 9. Drive slot; 10. Rotating shaft; 11. Upper worm gear; 12. Lifting arc plate; 13. Worm; 14. Adjusting wheel; 15. Connecting slot; 16. Rotating slot; 17. Rotating shaft; 18. Lower worm gear; 19. Connecting rotating plate; 20. Connecting hole; 21. Reset rotating slot; 22. Connecting rotating shaft; 23. Connecting rotating rod; 24. Sliding slot; 25. U-shaped frame plate; 26. Reset spring; 27. Air conditioner; 28. Exhaust pipe; 29. ​​Handle; 30. Protective pad; 31. Pin hole; 32. Pin shaft. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figures 1-9 The present invention is a sample refrigerator for medical experiments, including a refrigerator body 1, a plurality of mounting slots 2 are provided on the refrigerator body 1, a lifting frame 3 is provided inside the mounting slot 2, and a plurality of placement holes 4 are provided inside the lifting frame 3. The lifting frame 3 is in a sliding fit with the inner side of the mounting slot 2, and the placement holes 4 are used to place sample bottles containing reference samples. The shape of the sample bottles is well known to those skilled in the art and will not be described in detail here.

[0042] An adjustment component is provided at the bottom of the mounting slot 2. A reset component is provided between the lifting frame 3 and the mounting slot 2. A ventilation slot 5 is provided on the inner side of the mounting slot 2. A cold air channel 6 is provided inside the bottom of the refrigerator body 1. A sealing component is provided between the cold air channel 6 and the ventilation slot 5. A symmetrically arranged mounting block 7 is fixedly installed on the upper surface of the refrigerator body 1. A cover 8 is provided on the mounting block 7. A refrigerator unit 27 is fixedly installed on the refrigerator body 1. An exhaust pipe 28 is fixedly connected to the refrigerator unit 27. The exhaust pipe 28 is Z-shaped to ensure that the exhaust pipe 28 can pass cold air into the cold air channel 6. The end of the exhaust pipe 28 away from the refrigerator unit 27 is fixedly connected to the cold air channel 6. A handle 29 is fixedly installed on the side end face of the cover 8. A handle 29 is fixedly installed on the handle 29. A protective pad 30 is installed, and pin holes 31 are opened on both mounting blocks 7. A pin shaft 32 is fixedly installed on the cover 8. The cover 8 is rotatably connected to the refrigerator body 1 through the pin holes 31 and the pin shaft 32. The cover 8 and the refrigerator body 1 can be fixed by a locking mechanism. A temperature display can be installed on the cover 8, and a temperature detection device is installed inside the refrigerator body. The temperature display is connected to the temperature detection device. According to the required storage temperature of the sample and the temperature detected on the temperature display, the amount of cold air introduced can be increased or decreased to ensure the storage quality of the sample and thus ensure the accuracy of the sample test results. Since the locking mechanism, temperature display and temperature detection device are technologies well known to those skilled in the art, they will not be described in detail here.

[0043] The adjustment assembly includes a drive groove 9 located at the bottom of the mounting groove 2. A rotating shaft 10 is rotatably mounted inside the drive groove 9. An upper worm gear 11 and two lifting arc plates 12 are fixedly mounted on the rotating shaft 10. A worm gear 13 is rotatably mounted on the side end face of the refrigerator body 1. An adjustment wheel 14 is fixedly mounted on one end of the worm gear 13. The shape of the adjustment wheel 14 can be adjusted according to the needs of the personnel. It can be adjusted to a pentagon or a quadrilateral shape to ensure that the personnel can easily rotate the worm gear 13.

[0044] The sealing assembly includes two connecting grooves 15 and a rotating groove 16 formed inside the mounting groove 2. A rotating shaft 17 is rotatably mounted inside the rotating groove 16. A lower worm gear 18 is fixedly mounted on the rotating shaft 17. Connecting rotating plates 19 are fixedly mounted at both ends of the rotating shaft 17. Connecting rotating plates 19 have connecting holes 20. The upper worm gear 11 is positioned between the two lifting arc plates 12. The end of the worm 13 away from the adjusting wheel 14 extends and passes through the drive groove 9 and the connecting groove 15 in sequence. The worm 13 is driven by the upper worm gear 11 and the lower worm gear 18 respectively. Both ends of the rotating shaft 17 extend into the interior of the two rotating grooves 16 respectively. The connecting rotating plates 19 are in contact with the rotating grooves 16 and rotate. The ventilation groove 5 and the cold air groove 6 are connected through the connecting holes 20 on the connecting rotating plates 19. The worm 13 has an automatic locking function with the upper and lower worm gears. This technology is well known to those skilled in the art and will not be described in detail here.

[0045] In this embodiment, when it is necessary to remove the sample from the placement hole 4, the lid 8 is opened by the handle 29. The adjusting wheel 14 is selected according to the different types of samples. By rotating the adjusting wheel 14, the worm gear 13 is driven to rotate. The worm gear 13 cooperates with the upper worm wheel 11, causing the upper worm wheel 11 to rotate 180 degrees, simultaneously driving the lifting arc plate 12 to push the lifting frame 3 in the mounting slot 2 to rise. The sample inside the refrigerator body 1 will be exposed from the refrigerator body 1 as the lifting frame 3 rises, making it easier for personnel to remove the sample from the lifting frame 3. Sample removal effectively improves sample handling. When the lifting frame 3 is raised, to prevent excessive cold air from being discharged from the refrigerator body 1 in the cold air duct 6, the worm gear 13 rotates and simultaneously drives the lower worm wheel 18 to rotate. The rotating lower worm wheel 18 drives the connecting plate 19 to rotate 180 degrees through the rotating shaft 17. The cold air duct 6 and the ventilation duct 5 connected by the connecting hole 20 are closed by the rotating connecting plate 19. The cold air in the cold air duct 6 will no longer enter the ventilation duct 5, effectively preventing excessive loss of cold air.

[0046] The reset assembly includes a reset rotating groove 21 formed on the lifting frame 3. A connecting shaft 22 is rotatably mounted inside the reset rotating groove 21, and a connecting rod 23 is fixedly mounted on the connecting shaft 22. A sliding groove 24 is formed on the inner side of the mounting groove 2, and a U-shaped frame plate 25 is slidably mounted inside the sliding groove 24. A reset spring 26 is fixedly connected to the side end face of the U-shaped frame plate 25. The end of the connecting rod 23 away from the connecting shaft 22 is rotatably connected to the inside of the U-shaped frame plate 25, and the end of the reset spring 26 away from the U-shaped frame plate 25 is fixedly connected to the inside of the sliding groove 24. The shape of the reset rotating groove 21 is... The mounting groove 2 is an isosceles triangle with a flip groove on its inner side. This ensures that the connecting rod 23 is not affected by the lifting frame 3 when it rotates, thus preventing the connecting rod 23 from being unable to rotate. The connecting rod 23 is always in an inclined state. After the lifting frame 3 is raised outside the refrigerator body 1, the connecting rod 23 is also in an inclined state. The angle of this inclination is greater than the original angle. This angle of inclination ensures that the lifting frame 3 can automatically reset using the reaction force of the return spring 26 when it is not pushed by the lifting arc plate 12.

[0047] In this embodiment, after the sample is placed and removed, the lifting frame 3, which is lifted by the lifting arc plate 12, is no longer under force by reversing the adjustment wheel 14. The lifting frame 3 will push the U-shaped frame plate 25 by the reaction force of the reset spring 26. The U-shaped frame plate 25 will push the raised lifting frame 3 back to its original position by connecting the rotating rod 23, ensuring that the lifting frame 3 is inside the mounting groove 2, ensuring that the lid 8 can be closed with the refrigerator body 1, and ensuring that the refrigerator body 1 is kept in a stable and sealed state.

[0048] A method for refrigerating samples in a medical laboratory sample refrigerator includes the following steps:

[0049] Step 1: When using the refrigerator, if it is necessary to remove the sample from the placement hole 4, open the lid 8 using the handle 29. Select the adjustment wheel 14 at different positions according to different types of samples. By rotating the adjustment wheel 14, the worm gear 13 is driven to rotate. The worm gear 13 cooperates with the upper worm wheel 11, so that when the upper worm wheel 11 rotates 180 degrees, it synchronously drives the lifting arc plate 12 to push the lifting frame 3 in the mounting slot 2 to rise. The sample in the refrigerator body 1 will be exposed from the refrigerator body 1 as the lifting frame 3 rises, making it easier for personnel to remove the sample from the lifting frame 3 and effectively improving the sample retrieval and placement effect.

[0050] Step 2: When the lifting frame 3 is raised, in order to prevent excessive cold air from being discharged from the refrigerator body 1 in the cold air duct 6, the worm gear 13 will drive the lower worm wheel 18 to rotate synchronously when it rotates. The rotating lower worm wheel 18 will drive the connecting plate 19 to rotate 180 degrees through the rotating shaft 17. The cold air duct 6 and the ventilation duct 5 connected by the connecting hole 20 will be closed by the rotating connecting plate 19 after rotation. The cold air in the cold air duct 6 will no longer enter the ventilation duct 5, effectively preventing excessive loss of cold air.

[0051] Step 3: After the samples are placed and removed, the lifting frame 3, which is lifted by the lifting arc plate 12, is no longer under force by reversing the adjustment wheel 14. The lifting frame 3 will push the U-shaped frame plate 25 through the reaction force of the return spring 26. The U-shaped frame plate 25 will push the raised lifting frame 3 back to its original position through the connecting rotating rod 23, ensuring that the lifting frame 3 is inside the mounting groove 2, ensuring that the lid 8 can be closed with the refrigerator body 1, and ensuring that the refrigerator body 1 is kept in a stable and sealed state.

[0052] In this technical solution, the air conditioner 27 and the exhaust pipe 28 can be replaced with ice packs, which can be placed in the air conditioning channel 6.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A sample refrigerator for medical experiments, comprising a refrigerator body (1), characterized in that: The refrigerator body (1) has multiple mounting slots (2), and the mounting slots (2) are equipped with a lifting frame (3), and the lifting frame (3) is equipped with multiple placement holes (4). An adjustment component is provided at the bottom of the mounting slot (2), and a reset component is provided between the lifting frame (3) and the mounting slot (2); The inner side of the mounting groove (2) is provided with a ventilation groove (5), and the inner bottom of the refrigerator body (1) is provided with a cold air groove (6). A sealing component is provided between the cold air groove (6) and the ventilation groove (5). The upper surface of the refrigerator body (1) is fixedly equipped with symmetrically arranged mounting blocks (7), and the mounting blocks (7) are provided with lids (8).

2. The medical laboratory sample refrigerator according to claim 1, characterized in that: The adjustment assembly includes a drive groove (9) at the bottom of the mounting groove (2), a rotating shaft (10) is rotatably mounted inside the drive groove (9), an upper worm gear (11) and two lifting arc plates (12) are fixedly mounted on the rotating shaft (10), a worm (13) is rotatably mounted on the side end face of the refrigerator body (1), and an adjustment wheel (14) is fixedly mounted on one end of the worm (13).

3. A medical laboratory sample refrigerator according to claim 2, characterized in that: The sealing assembly includes two connecting grooves (15) and a rotating groove (16) opened inside the mounting groove (2). A rotating shaft (17) is rotatably installed inside the rotating groove (16). A lower worm gear (18) is fixedly installed on the rotating shaft (17). Connecting rotating plates (19) are fixedly installed at both ends of the rotating shaft (17). A connecting hole (20) is opened on the connecting rotating plate (19).

4. A medical laboratory sample refrigerator according to claim 3, characterized in that: The upper worm gear (11) is positioned between the two lifting arc plates (12). The end of the worm (13) away from the adjusting wheel (14) extends through the drive groove (9) and the connecting groove (15) in sequence. The worm (13) is driven by the upper worm gear (11) and the lower worm gear (18) respectively. The two ends of the rotating shaft (17) extend into the interior of the two rotating grooves (16) respectively. The connecting rotating plate (19) rotates in contact with the rotating groove (16). The ventilation groove (5) and the cold air groove (6) are connected through the connecting hole (20) on the connecting rotating plate (19).

5. A medical laboratory sample refrigerator according to claim 1, characterized in that: The reset assembly includes a reset rotating groove (21) opened on the lifting frame (3), a connecting rotating shaft (22) is rotatably installed inside the reset rotating groove (21), a connecting rotating rod (23) is fixedly installed on the connecting rotating shaft (22), a sliding groove (24) is opened on the inner side of the mounting groove (2), a U-shaped frame plate (25) is slidably installed inside the sliding groove (24), and a reset spring (26) is fixedly connected to the side end face of the U-shaped frame plate (25).

6. A medical laboratory sample refrigerator according to claim 5, characterized in that: The end of the connecting rod (23) away from the connecting shaft (22) is rotatably connected to the inside of the U-shaped frame plate (25), and the end of the reset spring (26) away from the U-shaped frame plate (25) is fixedly connected to the inside of the sliding groove (24).

7. A medical laboratory sample refrigerator according to claim 1, characterized in that: A refrigerator (27) is fixedly installed on the refrigerator body (1). An exhaust pipe (28) is fixedly connected to the refrigerator (27). The end of the exhaust pipe (28) away from the refrigerator (27) is fixedly connected to the air duct (6).

8. A medical laboratory sample refrigerator according to claim 1, characterized in that: A handle (29) is fixedly installed on the side end face of the box cover (8), and a protective pad (30) is fixedly installed on the handle (29).

9. A medical laboratory sample refrigerator according to claim 1, characterized in that: Both mounting blocks (7) are provided with pin holes (31), and the box cover (8) is fixedly installed with a pin shaft (32). The box cover (8) is rotatably connected to the refrigerator body (1) through the pin holes (31) and the pin shaft (32).

10. The refrigeration method of the medical laboratory sample refrigerator according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: When taking out the sample, open the box cover (8), select the adjustment wheel (14) corresponding to the sample to be taken out and rotate it. Drive the worm gear (13) to rotate and drive the upper worm wheel (11) to rotate 180 degrees, thereby driving the lifting arc plate (12) to push the lifting frame (3) in the mounting slot (2) to lift the sample. Step 2: When the worm (13) rotates, it will drive the lower worm wheel (18) to rotate synchronously. The rotating lower worm wheel (18) will drive the connecting plate (19) to rotate 180 degrees through the rotating shaft (17). The cold air passage (6) and the ventilation passage (5) connected by the connecting hole (20) will be in a closed state after the rotation of the connecting plate (19). The cold air in the cold air passage (6) will no longer enter the ventilation passage (5). Step 3: After the sample is taken out and placed, reverse the adjustment wheel (14). The lifting frame (3) pushes the U-shaped frame plate (25) through the reaction force of the reset spring (26). The U-shaped frame plate (25) will push the raised lifting frame (3) back to its original position through the connecting rod (23), ensuring that the lifting frame (3) is inside the mounting slot (2) and ensuring that the lid (8) can be closed with the refrigerator body (1).

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