Medicine moisture-proof storage cabinet

Abstract

The utility model relates to medicine cabinet technical field discloses a medicine moistureproof storage cabinet, including the cabinet body, and the cabinet body is equipped with the opening and the air inlet, and the opening has the opposite hinged side and the opening side, the cabinet door rotates and is established in the hinged side, the air curtain structure rotates and is established in the cabinet body close to the hinged side, and the air curtain structure has the air cavity and the horizontal outflow port, the air inlet air duct is set up in the cabinet body, and the air inlet air duct is communicated with the air inlet and the air cavity, and is equipped with the drying structure in the air inlet air duct, the air supply structure is located in the air inlet air duct and is used for sending the air to the air inlet air duct when the cabinet door rotates and opens the opening, and the cabinet door rotates and opens the opening and can drive the air curtain structure to rotate to make at least part of the horizontal outflow port be located in the outside of the cabinet body, and the drying air in the air inlet air duct moves from the hinged side to the opening side, forms the horizontal air curtain that covers the opening. The covering area of horizontal air curtain is in the outside of the opening, can stop the high humidity air of outside from entering the cabinet body and reduces air disturbance, guarantees the stability of the cabinet environment.

Description

Technical Field

[0001] This utility model relates to the field of medicine cabinet technology, and in particular to a moisture-proof medicine storage cabinet. Background Technology

[0002] Currently, existing medicine cabinets (also known as "medicine cool cabinets") have a constant temperature and low humidity mode, which can create a storage environment with constant temperature and humidity, ensuring that medicines, medicinal materials or medical consumables can be stored stably for a long time.

[0003] To ensure the stable storage of medicines over long periods, Chinese patent application CN223503884U discloses a dry and well-ventilated laboratory medicine cabinet, such as... Figure 1 As shown, it includes a medicine cabinet body 1a, with multiple storage drawers 2a slidably connected inside the body 1a. Multiple fans 3a are installed on the inner wall of the body 1a. Multiple ventilation holes are opened on the storage drawers 2a. A desiccant box 5a is located at the bottom of the body 1a, with multiple air vents running through its body. A cabinet door 6a is hinged to one side of the body 1a, and a humidity detection device 7a is installed on one side of the door 6a. The working principle is as follows: the fans 3a draw air out of the body 1a. When the air pressure inside the cabinet is lower than the outside air pressure, outside air enters the cabinet through the door gaps, achieving ventilation. The desiccant particles in the desiccant box 5a, combined with the air vents on the surface of the box and the ventilation holes in the storage drawers 2a, can absorb moisture inside the cabinet.

[0004] However, in hospital pharmacies, pharmacists frequently open medicine cabinets to retrieve medications, easily causing large fluctuations in the temperature and humidity inside the cabinets. If the outside humidity is high while the internal temperature of the medicine cabinet is low, outside air will enter the cabinet during the short time it is opened to retrieve medications. Upon contact with the inner walls of the cabinet door and cabinet, a thin layer of water vapor can easily condense, significantly increasing the humidity inside the cabinet after the door is closed. Even with the aforementioned dry and ventilated laboratory medicine cabinets, it takes a certain amount of time for the humidity inside the cabinet to decrease to the set value when the desiccant is used to absorb and remove moisture. Given the long hours and high frequency of opening medicine cabinet doors in hospital pharmacies, passive dehumidification using only the desiccant inside the cabinet is insufficient to meet the low-humidity storage requirements for medications.

[0005] To address the issue of slow dehumidification in typical cabinets, existing technologies employ methods to reduce the amount of moisture entering the cabinet. For example, Chinese patent application CN212234249U discloses a moisture-proof bathroom cabinet, which includes a cabinet body forming storage space, with a door pivotally connected to the cabinet body. The air supply mechanism includes an air supply cavity, a bellows, and an exhaust fan. The air supply cavity is elongated and positioned along the upper edge of the cabinet body, forming an air curtain. The bellows is located on the top wall of the cabinet body. The exhaust fan draws outside air into the bellows, heats it, and then blows the hot air out through the air supply cavity. A portion of the air curtain flows into the cabinet, causing the hot air to circulate inside the cabinet.

[0006] Although the air supply mechanism of a moisture-proof bathroom vanity can form an air curtain, because the air supply chamber is located inside the cabinet, the air curtain formed by the air supply mechanism is located inside the cabinet. When the door is opened, the air forming the air curtain blows from the top wall of the cabinet to the bottom wall. After the air hits the bottom wall, some of it is blown into the cabinet, causing significant disturbance to the original environment inside the cabinet. This makes the cabinet unsuitable for storing medicines, and the air blown into the cabinet still contains moisture, failing to achieve the effect of maintaining a stable low-humidity environment inside the cabinet.

[0007] In summary, when existing cabinet moisture-proof technologies are applied to medicine cabinets, the air curtain blown into the cabinet causes significant disturbance to the original air environment, and the air forming the air curtain contains moisture, making it difficult to guarantee a stable low-humidity storage environment. Utility Model Content

[0008] The technical problem this utility model aims to solve is that when existing cabinet moisture-proof technology is applied to medicine cabinets, the air curtain blown into the cabinet greatly disturbs the original air environment, and the air forming the air curtain contains moisture, making it difficult to guarantee a stable low-humidity storage environment.

[0009] To solve the above-mentioned technical problems, this utility model provides a technical solution for a moisture-proof storage cabinet for pharmaceuticals: Medicine moisture-proof storage cabinets include: The cabinet has an opening and an air inlet, the opening having a hinged side and an open side arranged opposite to each other; The cabinet door is rotatably located on the hinge side to seal the opening; An air curtain structure is rotatably disposed within the cabinet body near the hinge side. The air curtain structure has an air cavity and a horizontal air outlet communicating with the air cavity. An air intake duct is provided in the cabinet and the air intake duct connects the air inlet and the air cavity. A drying structure is provided inside the air intake duct. An air supply structure is provided in the air intake duct and is used to supply air to the air intake duct when the cabinet door is rotated to open the opening; The cabinet door can be rotated to open the opening, which can cause the air curtain structure to rotate so that at least a portion of the horizontal air outlet is located outside the cabinet and the dry air in the air inlet duct moves from the hinge side to the opening side.

[0010] As a further preferred embodiment, the medicine moisture-proof storage cabinet also includes: A sealing shell is disposed in the cabinet body near the hinge side. The air curtain structure is rotatably disposed in the sealing shell. The sealing shell has a ventilation opening, which connects the air intake duct and the air cavity. The sealing shell is provided with a spring-loaded outlet on the side near the cabinet door, and the horizontal air outlet is located on the side of the air curtain structure near the spring-loaded outlet; When the cabinet door is closed, the cabinet door blocks the air curtain structure and places the air curtain structure inside the sealing shell; When the cabinet door is opened, the cabinet door releases its obstruction of the air curtain structure, allowing at least a portion of the advection air outlets to move out of the sealing shell through the spring-loaded outlet.

[0011] As a further preferred embodiment, the medicine moisture-proof storage cabinet also includes: An elastic element is disposed within the sealing shell; One end of the elastic element is connected to the air curtain structure and the other end is connected to the sealing shell. The elastic element is used to elastically push the air curtain structure to rotate when the cabinet door is opened, so that the horizontal air outlet moves out of the sealing shell through the spring outlet. The elastic element is also used to elastically compress when the cabinet door is closed, so that the horizontal air outlet moves into the sealing shell through the spring outlet.

[0012] As a further preferred embodiment, the elastic element is a cylindrical compression spring, which is located on the side of the air curtain structure away from the ejector outlet.

[0013] As a further preferred embodiment, the air curtain structure includes a first side plate, a second side plate, and an arc-shaped plate, wherein the first side plate and the second side plate are connected at an angle, and the arc-shaped plate is fixedly connected to the first side plate and the second side plate to form the air cavity; The first side plate and the second side plate are rotatably connected to the sealing shell at the included angle; the first side plate has a first through hole communicating with the vent. The horizontal air outlet is located on the side of the arc-shaped plate and close to the second side plate; One end of the elastic element is connected to the first side plate, and the other end is connected to the inner wall of the sealing shell; When the cabinet door is opened, the elastic element elastically pushes the first side plate, causing the air curtain structure to rotate, so that the horizontal air outlet and part of the second side plate are moved out of the sealing shell through the spring outlet.

[0014] As a further preferred embodiment, a rotating shaft is rotatably provided inside the sealing shell, the rotating shaft being arranged parallel to the rotation axis of the cabinet door, and the angle between the first side plate and the second side plate being fixedly connected to the rotating shaft.

[0015] As a further preferred embodiment, the air curtain structure further includes a partition, which is disposed within the air cavity. The partition connects the first side plate and the second side plate respectively, and the partition divides the air cavity into a first cavity and a second cavity. The partition is provided with a plurality of air guide holes, which are respectively connected to the first cavity and the second cavity; The first through hole connects to the first cavity, and the horizontal air outlet connects to the second cavity.

[0016] As a further preferred embodiment, the pore density of the air guide holes on the surface of the partition gradually increases from top to bottom; and the pore density of the air guide holes on the surface of the partition gradually decreases from the direction from the first side plate to the horizontal air outlet.

[0017] As a further preferred embodiment, the air guide hole is a strip-shaped hole, and the length direction of the air guide hole is arranged parallel to the rotation axis of the cabinet door.

[0018] As a further preferred embodiment, the medicine moisture-proof storage cabinet also includes a corrugated pipe, one end of which is connected to the first through hole of the air curtain structure, and the other end is connected to the ventilation opening of the sealing shell.

[0019] As a further preferred embodiment, the medicine moisture-proof storage cabinet also includes a control board and a limit switch. The control board is electrically connected to the air supply structure and the limit switch. The limit switch is disposed inside the cabinet and abuts against the cabinet door, or the limit switch is disposed inside the sealed shell and abuts against the air curtain structure.

[0020] As a further preferred embodiment, the air intake duct is located on the upper inside of the cabinet, the air intake duct extends along the thickness direction of the cabinet, and the air inlet is disposed through the back panel of the cabinet. The air intake duct is provided with a first check valve near the air inlet, and the air intake duct is provided with a second check valve near the air curtain structure. The drying structure is located between the first check valve and the second check valve, and both the first check valve and the second check valve are configured to be open along the air intake direction of the air intake duct.

[0021] Compared with existing technologies, the beneficial effects of this novel moisture-proof storage cabinet for pharmaceuticals are as follows: When the cabinet door is opened, the dry air in the air intake duct moves from the hinged side to the opening side through the air curtain structure, forming a lateral air curtain covering the opening, which is equivalent to an "air curtain". This lateral air curtain can block the entry of high-humidity air from the outside into the cabinet, effectively weakening the path of high-humidity air from the outside into the cabinet due to natural convection. Furthermore, since at least part of the lateral air outlet is located on the outside of the cabinet, the lateral air curtain covering the opening does not blow dry air towards the side walls or the inside of the cabinet. The airflow of the lateral air curtain is more stable and uniform, and it is less likely to generate local eddies or weak points. While isolating high-humidity air from the outside and low-humidity air inside the cabinet, it reduces the disturbance to the original low-humidity air inside the cabinet.

[0022] The key point is that the air curtain structure is positioned on the hinged side of the opening and blows air towards the opening. The airflow direction is somewhat opposite to the direction in which outside air attempts to enter when the door is opened, which can more actively "push" the outside air out. The main effective area of ​​the lateral advection air curtain is on the opening side, with minimal disturbance to the stable, low-humidity air inside the cabinet, ensuring the stability of the environment in most areas inside the cabinet.

[0023] The air intake duct is located within the cabinet and connects to the air inlet and the air chamber of the air curtain structure. A drying structure is installed within the air intake duct, and the air source for the advection air curtain is dried air treated by the drying structure. This means that even if a small amount of outside air is drawn into the advection air curtain, it will not become a humidifier source that increases the humidity inside the cabinet, ensuring that the advection air curtain acts as a humidity buffer between the outside and inside of the cabinet. This solution effectively prevents disturbance of the original air environment caused by the advection air curtain blowing into the cabinet, and prevents increased humidity due to moisture in the air within the advection air curtain, thus ensuring a stable low-humidity storage environment. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of a dry and ventilated laboratory medicine cabinet based on the background technology. Figure 2 This is a three-dimensional schematic diagram of a medicine moisture-proof storage cabinet according to an embodiment of this utility model; Figure 3 yes Figure 2 A cross-sectional schematic diagram of a moisture-proof medicine storage cabinet (at the air intake duct); Figure 4 This is a three-dimensional schematic diagram of the air curtain structure according to an embodiment of the present invention; Figure 5 yes Figure 4 A cross-sectional schematic diagram of the air curtain structure (at the first through-hole); Figure 6 This is an exploded view of the air curtain structure according to an embodiment of the present invention; Figure 1 In the middle: 1a, medicine cabinet body; 2a, storage drawer; 3a, fan; 5a, drying box; 6a, medicine cabinet door; 7a, humidity detection device; Figures 2 to 6 In the middle: 1. Cabinet body; 10. Opening; 11. Hinge side; 12. Opening side; 13. Air inlet; 2. Cabinet door; 3. Air curtain structure; 30. Air cavity; 301. First cavity; 302. Second cavity; 31. Horizontal air outlet; 32. First side panel; 320. First through hole; 33. Second side panel; 34. Curved plate; 35. Partition; 350. Air guide hole; 36. Rotating shaft; 37. Top plate; 38. Bottom plate; 39. 4. Bearing; 41. Air intake duct; 42. Drying structure; 43. Air supply structure; 44. First check valve; 45. Second check valve; 46. Inspection cover plate; 57. Reducing joint; 58. Sealing shell; 59. Ventilation port; 50. Spring outlet; 51. Elastic element; 52. Stop plate; 53. Bellows; 54. First wall plate; 55. Second wall plate; 56. Third wall plate; 57. Upper end plate; 58. Lower end plate; 6. Limit switch. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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 utility model.

[0027] 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 utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0029] like Figure 2 As shown, an embodiment of the present invention provides a moisture-proof storage cabinet for medicines, comprising a cabinet body 1, a cabinet door 2, an air curtain structure 3, an air inlet duct 4, a drying structure 41, and an air supply structure 42. The cabinet body 1 is provided with an opening 10 and an air inlet 13. The opening 10 has a hinged side 11 and an opening side 12 arranged opposite to each other. The cabinet door 2 is rotatably disposed on the hinged side 11 to seal or open the opening 10. The air curtain structure 3 is rotatably disposed inside the cabinet body 1 near the hinged side 11. The air curtain structure 3 has an air cavity 30 and a horizontal air outlet 31 communicating with the air cavity 30.

[0030] An air intake duct 4 is provided in the cabinet 1 and connects the air inlet 13 and the air cavity 30. A drying structure 41 is provided in the air intake duct 4. An air supply structure 42 is provided in the air intake duct 4 and is used to supply air to the air intake duct 4 when the cabinet door 2 is rotated to open the opening 10. Rotating the cabinet door 2 to open the opening 10 can drive the air curtain structure 3 to rotate so that at least part of the horizontal air outlet 31 is located outside the cabinet 1 and the dry air in the air intake duct 4 moves from the hinge side 11 to the opening side 12.

[0031] The working process is as follows: When the cabinet door 2 is opened, the dry air in the air intake duct 4 moves from the hinge side 11 to the opening side 12 through the air curtain structure 3, forming a lateral air curtain covering the opening 10, which is equivalent to an "air curtain". The lateral air curtain can block the entry of high-humidity air from the outside into the cabinet 1, effectively weakening the path of high-humidity air from the outside into the cabinet due to natural convection. Furthermore, since at least part of the lateral air outlet 31 is located on the outside of the cabinet 1, the lateral air curtain covers the opening 10 without blowing dry air towards the side wall of the cabinet 1 or the inside of the cabinet 1. The airflow of the lateral air curtain is more stable and uniform, and it is less likely to generate local eddies or weak points. While isolating the high-humidity air from the outside and the low-humidity air inside the cabinet, it reduces the disturbance to the original low-humidity air inside the cabinet.

[0032] The key point is that the air curtain structure 3 is positioned on the hinged side 11 of the opening 10 and blows air towards the opening side 12. The airflow direction is somewhat opposite to the direction in which outside air attempts to enter when the door is opened, which can more actively "push" the outside air out. The lateral flow advection air curtain mainly targets the external area between the opening side 12 and the cabinet door 2, with minimal disturbance to the stable low-humidity air inside the cabinet, ensuring the stability of the environment in most areas inside the cabinet.

[0033] The air intake duct 4 is located in the cabinet 1 and is connected to the air inlet 13 and the air cavity 30 of the air curtain structure 3. The air intake duct 4 is equipped with a drying structure 41. The air source of the advection air curtain is dry air processed by the drying structure 41. This means that even if a small amount of outside air is drawn into the advection air curtain near the opening 10, it will not become a humidification source that causes the humidity inside the cabinet to increase. This ensures that the advection air curtain can form a humidity buffer medium between the outside and inside of the cabinet 1.

[0034] In addition, the air curtain structure 3 and the air supply structure 42 adopt a control design that is synchronized with the opening and closing of the cabinet door 2. The advection air curtain is activated at the same time as the door is opened, ensuring protection without delay, and the advection air curtain is closed at the same time as the door is closed, avoiding unnecessary operating energy consumption. Through the synergistic design of "advection air curtain + active drying + synchronous control", the original air environment is prevented from being disturbed by the advection air curtain blowing into the cabinet, and the humidity is prevented from increasing due to the moisture in the air of the advection air curtain, thereby ensuring that a stable low-humidity storage environment can be maintained.

[0035] In this embodiment, the medicine moisture-proof storage cabinet also includes a sealing shell 5, which is located inside the cabinet body 1 near the hinge side 11. The air curtain structure 3 is rotatably located inside the sealing shell 5. The sealing shell 5 has a ventilation opening 50, which connects the air intake duct 4 and the air cavity 30 of the air curtain structure 3. The sealing shell 5 has a pop-out outlet 51 on the side near the cabinet door 2, and a horizontal air outlet 31 is located on the side of the air curtain structure 3 near the pop-out outlet 51. When the cabinet door 2 is closed, the cabinet door 2 blocks the air curtain structure 3 and keeps the air curtain structure 3 inside the sealing shell 5. When the cabinet door 2 is opened, the cabinet door 2 releases the blockage of the air curtain structure 3, so that at least part of the horizontal air outlet 31 moves out of the sealing shell 5 through the pop-out outlet 51.

[0036] like Figure 4 , Figure 5 As shown, the sealing shell 5 is a cuboid shell. Specifically, the sealing shell 5 includes a first wall panel 55, a second wall panel 56, a third wall panel 57, an upper end plate 58, and a lower end plate 59. The first wall panel 55 and the second wall panel 56 are distributed parallel to each other along the width direction of the cabinet 1. The third wall panel 57 is fixedly connected to the side of the first wall panel 55 and the second wall panel 56 away from the opening 10. The upper end plate 58 and the lower end plate 59 are distributed vertically and vertically. The upper end plate 58 is fixed to the upper part of the first wall panel 55, the second wall panel 56, and the third wall panel 57, and the lower end plate 59 is fixed to the lower part of the first wall panel 55, the second wall panel 56, and the third wall panel 57. The first wall panel 55, the second wall panel 56, the third wall panel 57, the upper end plate 58, and the lower end plate 59 form a space for accommodating the air curtain structure 3.

[0037] like Figure 3As shown, when cabinet door 2 is closed, it presses against the pop-outlet 51 of the sealing shell 5, and blocks the air curtain structure 3 inside the sealing shell 5. The pressure of cabinet door 2 against the sealing shell 5 seals the pop-outlet 51 and the air curtain structure 3, preventing the air curtain structure 3 from protruding outward and obstructing the normal closing of cabinet door 2. When cabinet door 2 opens, it rotates outward away from the sealing shell 5. During this process, the air curtain structure 3 moves out of the sealing shell 5 through the pop-outlet 51. That is, the rotation of the air curtain structure 3 is synchronized with the opening and closing of cabinet door 2, thus ensuring that the start and stop control of the advection air curtain is without delay. The edge of the first wall panel 55 of the sealing shell 5 is flush with the plane of the opening 10, and will not interfere with the normal closing of cabinet door 2. Even if some advection air outlets 31 are still inside the sealing shell 5, the first wall panel 55 can effectively block the air blown out of these outlets, preventing the advection air curtain generated by the air curtain structure 3 from blowing into the cabinet 1, and reducing the disturbance to the original air environment inside the cabinet.

[0038] like Figure 5 As shown, the medicine moisture-proof storage cabinet also includes an elastic element 52, which is located inside the sealing shell 5. One end of the elastic element 52 is connected to the air curtain structure 3, and the other end is connected to the sealing shell 5. The elastic element 52 is used to elastically push the air curtain structure 3 to rotate when the cabinet door 2 is opened, so that the horizontal air outlet 31 moves out of the sealing shell 5 through the pop-out outlet 51. The elastic element 52 is also used to elastically compress when the cabinet door 2 is closed, so that the horizontal air outlet 31 moves into the sealing shell 5 through the pop-out outlet 51. The setting of the elastic element 52 allows the horizontal air outlet 31 of the air curtain structure 3 to move to the outside of the opening 10 when the cabinet door 2 is opened, and at the same time, it can form a horizontal air curtain to prevent outside air from entering the cabinet 1 when the door is opened.

[0039] As a further preferred embodiment, the elastic element 52 is a cylindrical compression spring, located on the side of the air curtain structure 3 away from the ejection outlet 51. The elastic element 52 connects the third wall plate 57 of the sealing shell 5 and the air curtain structure 3. The cylindrical compression spring generates an elastic force on the air curtain structure 3 around its rotation axis and towards the ejection outlet 51. During the opening of the cabinet door 2, this elastic force drives the air curtain structure 3 to move out synchronously. Correspondingly, when the cabinet door 2 closes, the cylindrical compression spring is gradually compressed, thereby accumulating elastic potential energy to drive the rotation and ejection of the air curtain structure 3.

[0040] Furthermore, a baffle plate 53 is provided near the ejector outlet 51 of the sealing shell 5. When the horizontal air outlet 31 is removed from the sealing shell 5, the baffle plate 53 engages with the air curtain structure 3 for limiting. Specifically, the baffle plate 53 and the third wall panel 57 are arranged at intervals along the thickness direction of the cabinet 1. The width of the baffle plate 53 is half the width of the third wall panel 57. Correspondingly, the width of the ejector outlet 51 is half the width of the third wall panel 57. That is, the ejector outlet 51 and the baffle plate 53 form the front structure of the sealing shell 5. The baffle plate 53 is arranged close to the hinge side 11, so that the ejector outlet 51 is distributed away from the hinge side 11, ensuring that the horizontal air outlet 31 of the air curtain structure 3 can be smoothly removed from the sealing shell 5.

[0041] In some embodiments, the width of the baffle plate 53 can be any size from one-third to two-thirds of the width of the third wall panel 57. The width of the baffle plate 53 and the width of the ejector outlet 51 can be flexibly adjusted according to the installation position of the air curtain structure 3 and the air volume requirements.

[0042] like Figure 5 and Figure 6 As shown, the air curtain structure 3 includes a first side plate 32, a second side plate 33, and an arc-shaped plate 34. The first side plate 32 and the second side plate 33 are connected at an angle. The arc-shaped plate 34 is fixedly connected to the first side plate 32 and the second side plate 33 and forms an air cavity 30. The angle between the first side plate 32 and the second side plate 33 is rotatably connected to the sealing shell 5. The first side plate 32 has a first through hole 320 that communicates with the vent 50. The horizontal air outlet 31 is located on the side of the arc-shaped plate 34 and close to the second side plate 33. One end of the elastic member 52 is connected to the first side plate 32, and the other end is connected to the inner wall of the sealing shell 5. When the cabinet door 2 is opened, the elastic member 52 elastically pushes the first side plate 32, causing the air curtain structure 3 to rotate, so that the horizontal air outlet 31 and part of the second side plate 33 are moved out of the sealing shell 5 through the spring outlet 51.

[0043] Furthermore, a rotating shaft 36 is rotatably installed inside the sealing shell 5. The rotating shaft 36 is arranged parallel to the rotation axis of the cabinet door 2. The angle between the first side plate 32 and the second side plate 33 is fixedly connected to the rotating shaft 36. The upper and lower ends of the rotating shaft 36 are rotatably connected to the upper end plate 58 and the lower end plate 59 respectively through bearings 39. The air curtain structure 3 also includes a top plate 37 and a bottom plate 38. The top plate 37 is fixed to the top of the first side plate 32, the second side plate 33 and the arc plate 34, and the bottom plate 38 is fixed to the bottom of the first side plate 32, the second side plate 33 and the arc plate 34.

[0044] Specifically, both the top plate 37 and the bottom plate 38 are fan-shaped plates, meaning that the horizontal cross-sectional profile of the air curtain structure 3 is fan-shaped. The upper part of the first side plate 32 is provided with a first through hole 320. The air inlet is located at the upper part of the first side plate 32. After passing through the flared space between the first side plate 32 and the second side plate 33, the gas flow rate is reduced, allowing the dry air to flow more smoothly through the horizontal air outlet 31.

[0045] As a further preferred embodiment, the air curtain structure 3 also includes a partition 35, which is disposed within the air cavity 30. The partition 35 is connected to the first side plate 32 and the second side plate 33 respectively, and the partition 35 is spaced apart from the arc-shaped plate 34. The partition 35 divides the air cavity 30 into a first cavity 301 and a second cavity 302. The partition 35 has multiple air guide holes 350, which are connected to the first cavity 301 and the second cavity 302 respectively; a first through hole 320 connects to the first cavity 301, and a horizontal air outlet 31 connects to the second cavity 302.

[0046] The partition 35 is connected between the first side plate 32 and the second side plate 33. The partition 35 can also be a structure similar to the arc plate 34. The partition 35 divides the air cavity 30 to form a double cavity. The first cavity 301 is distributed close to the rotating shaft 36, and the second cavity 302 is distributed away from the rotating shaft 36. Dry air first enters the first cavity 301 and is guided and dispersed through multiple air guide holes 350, so that the local airflow concentrated at the air inlet position is evenly diffused into the entire space of the second cavity 302, thereby ensuring the integrity and stability of the airflow at the horizontal air outlet 31.

[0047] From top to bottom (referring to the height direction of cabinet 1 from the upper end plate 58 to the lower end plate 59), the pore density of the air guide holes 350 on the surface of the partition 35 gradually increases; from the first side plate 32 to the horizontal air outlet 31, the pore density of the air guide holes 350 on the surface of the partition 35 gradually decreases. That is to say, along the top-to-bottom direction, the opening area and / or number of openings of the air guide holes 350 gradually increase, and along the inside-to-outside direction, the opening area and / or number of openings of the air guide holes 350 gradually decrease. Since the air pressure is higher near the air inlet and lower away from the air inlet, the problem of air pressure difference at different positions is eliminated by the differentiated arrangement of the upper and lower and inner and outer air guide holes 350.

[0048] In this embodiment, the air guide hole 350 is a strip-shaped hole, and its length direction is arranged parallel to the rotation axis of the cabinet door 2, which maximizes the uniformity of airflow distribution in the vertical direction (i.e., the height direction of the cabinet 1) of the horizontal air outlet 31. In particular, along the air outlet direction of the horizontal air outlet 31, most of the air guide holes 350 of the partition 35 are staggered from the horizontal air outlet 31 of the arc plate 34, preventing the problem of high local airflow velocity in the horizontal air curtain caused by some air guide holes 350 directly connecting with the horizontal air outlet 31 along the air outlet direction. The position setting of the air guide hole 350 ensures the uniformity of the wind speed distribution of the horizontal air curtain.

[0049] In this embodiment, the medicine moisture-proof storage cabinet also includes a corrugated pipe 54. A vent 50 is provided on the third wall panel 57 of the sealing shell 5. One end of the corrugated pipe 54 is connected to the first through hole 320 of the air curtain structure 3, and the other end is connected to the vent 50 of the sealing shell 5. The corrugated pipe 54 provides a flexible connection between the air intake duct 4 and the first through hole 320 of the air curtain structure 3. The corrugated pipe 54 can adapt to changes in the angle of the air curtain structure 3, ensuring stable delivery of dry gas even when the air curtain structure 3 rotates around its axis 36.

[0050] In some embodiments, in order to prevent excessive gas flow resistance caused by the large difference in cross-sectional area between the air intake duct 4 and the bellows 54, a reducing connector 46 is provided near the vent 50 in the air intake duct 4. The reducing connector 46 is arranged with a gradually decreasing cross-sectional area along the air intake direction. The reducing connector 46 achieves a smooth transition from the air intake duct 4 to the vent 50 of the sealing shell 5 and the bellows 54, avoiding the formation of airflow obstruction due to the sudden decrease in cross-sectional area of ​​the drying air at different positions in the channel, and ensuring the delivery efficiency of the drying airflow.

[0051] The moisture-proof storage cabinet for medicines also includes a control board and a limit switch 6. The control board is electrically connected to the air supply structure 42 and the limit switch 6. The limit switch 6 is used to send an open or closed signal. The limit switch 6 is installed in the cabinet body 1 and abuts against the cabinet door 2, or the limit switch 6 is installed inside the sealing shell 5 and abuts against the air curtain structure 3.

[0052] It should be noted that, in addition to controlling the opening and closing of the air supply structure 42, the control board also serves as the main control circuit board for the entire medicine moisture-proof storage cabinet, responsible for temperature regulation, compressor operation control, fault diagnosis, and protection. The medicine moisture-proof storage cabinet also includes a refrigeration system composed of a compressor, evaporator, condenser, and expansion valve. This refrigeration system is designed similarly to that of a traditional refrigerator. Generally, the compressor is located inside the lower part of the cabinet body 1, the evaporator is located inside the upper part of the cabinet body 1, and the control board is located inside the back panel of the cabinet body 1. Removing the back panel of the cabinet body 1 facilitates inspection and maintenance.

[0053] Regarding the control principle of the air supply structure 42, it is electrically connected to the control board via a limit switch 6. The limit switch 6 is used to detect whether the cabinet door 2 is open or closed, or to detect the position of the air curtain structure 3 in the sealed shell 5. For example, the limit switch 6 is located at the lower part of the opening 10 of the cabinet 1 and abuts against the cabinet door 2. When the cabinet door 2 is open, the limit switch 6 pops out and sends an opening signal to the control board. The control board receives the opening signal and controls the air supply structure 42 and the lighting to start simultaneously. When the cabinet door 2 is closed, the limit switch 6 is pressed and sends a closing signal to the control board. The control board receives the closing signal and controls the air supply structure 42 and the lighting to stop simultaneously. In other words, the start / stop control of the air supply structure 42 and the cabinet lighting control share a single limit switch 6.

[0054] In some embodiments, if the cabinet interior lighting is set to be constantly on, meaning the cabinet interior lighting control is not related to the opening and closing of the cabinet door 2, then the limit switch 6 can be installed inside the sealed housing 5, and the limit switch 6 abuts against the first side plate 32 of the air curtain structure 3. When the air curtain structure 3 moves out as the cabinet door 2 opens, the limit switch 6 simultaneously pops out and sends an opening signal to the control panel. The control panel receives the opening signal and controls the air supply structure 42 to start. When the cabinet door 2 closes, the limit switch 6 is pressed and sends a closing signal to the control panel. The control panel receives the closing signal and controls the air supply structure 42 to stop. In other words, the limit switch 6 is used to independently control the start and stop of the air supply structure 42.

[0055] The air intake duct 4 is located on the upper side of the inside of the cabinet 1. The air intake duct 4 extends along the thickness direction of the cabinet 1, and the air inlet 13 is installed through the back panel of the cabinet 1. The air intake duct 4 is located on the upper part of the cabinet 1 and close to the inner wall of the cabinet 1 on the hinge side 11. On the one hand, this avoids the external air intake duct 4 from affecting the overall neatness of the equipment. On the other hand, it also reduces the actual storage space occupied by the air intake duct 4 inside the cabinet 1, making the space layout more reasonable.

[0056] A first check valve 43 is installed near the air inlet 13 in the air intake duct 4, and a second check valve 44 is installed near the air curtain structure 3 in the air intake duct 4. The drying structure 41 is located between the first check valve 43 and the second check valve 44, and both the first check valve 43 and the second check valve 44 are arranged to be open along the air intake direction of the air intake duct 4. Both the first check valve 43 and the second check valve 44 are valve cover type check valves. Under normal circumstances, the valve cover of the first check valve 43 and the valve cover of the second check valve 44 cover the air intake duct 4. When the air supply structure 42 is activated, it generates air pressure and drives the valve covers of the two check valves to open, allowing airflow to flow from one side of the air inlet 13 to the air curtain structure 3. Conversely, if the air supply structure 42 stops, the air pressure disappears, and the valve covers of the two check valves automatically close to prevent airflow from flowing back from the air curtain structure 3 to the air inlet 13, thus preventing the low-humidity air inside the cabinet from leaking to the outside after the cabinet door 2 is closed.

[0057] A maintenance cover 45 is detachably installed on the middle side wall of the air intake duct 4, and the drying structure 41 is placed inside the maintenance cover 45. Specifically, an inspection port is provided on the middle side wall of the air intake duct 4, located between the first check valve 43 and the second check valve 44. The maintenance cover 45 is detachably installed at the inspection port by a snap-fit ​​mechanism, and can be opened to replace the drying structure 41 as needed. It should be noted that the drying structure 41 can be any of the following: activated alumina particle desiccant pack, anhydrous calcium chloride desiccant pack, anhydrous calcium sulfate desiccant pack, molecular sieve desiccant pack, etc.

[0058] The moisture-proof storage cabinet for medicines has a total height of 1.2m for the cabinet body 1 and a height of 0.8m for the opening 10 and cabinet door 2. It can be equipped with two, three, or four layers of partitions for storing various medicines in layers. Each partition has a notch near the hinge side 11 to avoid the air curtain structure 3. The height of the air curtain structure 3 is 0.76m. Dry air enters the first cavity 301 through the first through hole 320 at the top. After passing through the partition 35, the air pressure of the dry air is transmitted downwards. Combined with the differentiated air guide holes 350 distributed at the top and bottom, the air pressure in the second cavity 302 is balanced at all positions along the vertical direction, ensuring that the horizontal airflow outlet 31 of the air curtain structure 3 can evenly expel air.

[0059] In some embodiments, the number and position of air intake ducts can be adapted to the cabinet height. For example, when the total height of the cabinet is 2m and the height of the air curtain structure exceeds 1.5m, an air intake duct 4 can be set on the upper and lower sides of the cabinet. Dry air enters the air curtain structure 3 from the upper air intake duct 4 and the lower air intake duct 4 at the same time. Inside the air curtain structure 3, the air pressure is evenly distributed through the partition 35 (the opening ratio of the air guide holes gradually increases from both ends to the middle). This also ensures that the entire horizontal air outlet 31 can blow air out evenly.

[0060] Furthermore, the opening 10 of the horizontal air outlet 31 has any width between 3mm and 12mm, and the air velocity of the horizontal air outlet 31 is any size between 0.8m / s and 3.5m / s when the cabinet door 2 is opened. In this embodiment, the width of the horizontal air outlet 31 is 5mm, and preferably, the air velocity of the horizontal air outlet 31 is any size between 1m / s and 2m / s. That is to say, when the cabinet door 2 is opened, the thickness of the horizontal air curtain is ≥5mm, and the air velocity of the horizontal air curtain on the opening side 12 is ≥0.5m / s, ensuring the isolation effect of the horizontal air curtain against the outside air.

[0061] To meet different usage requirements, in some embodiments, the technical parameters of the horizontal flow outlet 31 can be adaptively adjusted. For example, the width of the horizontal flow outlet 31 can be 3mm, 4mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, or any other size between 3mm and 12mm. Correspondingly, the air velocity of the horizontal flow curtain can be adjusted according to the width of the horizontal flow outlet 31. The air velocity of the horizontal flow curtain can also be 0.8m / s, 0.9m / s, 2.1m / s, 2.2m / s, 2.3m / s, 2.4m / s, 2.5m / s, 2.6m / s, 2.7m / s, 2.8m / s, 2.9m / s, 3m / s, 3.1m / s, 3.2m / s, 3.3m / s, 3.4m / s, or any other size between 0.8m / s and 3.5m / s.

[0062] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A moisture-proof storage cabinet for pharmaceuticals, characterized in that, include: The cabinet (1) has an opening (10) and an air inlet (13), the opening (10) having a hinged side (11) and an opening side (12) arranged opposite to each other. Cabinet door (2) is rotatably located on the hinge side (11) to seal the opening (10). An air curtain structure (3) is rotatably disposed in the cabinet (1) near the hinge side (11). The air curtain structure (3) has an air cavity (30) and a horizontal air outlet (31) communicating with the air cavity (30). An air intake duct (4) is provided in the cabinet (1), and the air intake duct (4) connects the air inlet (13) and the air cavity (30). A drying structure (41) is provided in the air intake duct (4). An air supply structure (42) is provided in the air intake duct (4) for supplying air to the air intake duct (4) when the cabinet door (2) is rotated to open the opening (10); The cabinet door (2) can rotate to open the opening (10), which can drive the air curtain structure (3) to rotate so that at least part of the horizontal air outlet (31) is located outside the cabinet (1), and the dry air in the air inlet duct (4) moves from the hinge side (11) to the opening side (12).

2. The pharmaceutical moisture-proof storage cabinet according to claim 1, characterized in that, The moisture-proof storage cabinet for pharmaceuticals also includes: A sealing shell (5) is located inside the cabinet (1) near the hinge side (11). The air curtain structure (3) is rotatably located inside the sealing shell (5). The sealing shell (5) has a ventilation opening (50) that connects the air intake duct (4) and the air cavity (30). The sealing shell (5) is provided with a pop-out outlet (51) on the side near the cabinet door (2), and the horizontal air outlet (31) is provided on the side of the air curtain structure (3) near the pop-out outlet (51). When the cabinet door (2) is closed, the cabinet door (2) blocks the air curtain structure (3) and places the air curtain structure (3) inside the sealing shell (5); When the cabinet door (2) is opened, the cabinet door (2) releases its obstruction of the air curtain structure (3) so that at least part of the horizontal air outlet (31) moves out of the sealing shell (5) through the ejector outlet (51).

3. The pharmaceutical moisture-proof storage cabinet according to claim 2, characterized in that, The moisture-proof storage cabinet for pharmaceuticals also includes: An elastic element (52) is disposed inside the sealing shell (5); One end of the elastic element (52) is connected to the air curtain structure (3) and the other end is connected to the sealing shell (5). The elastic element (52) is used to elastically push the air curtain structure (3) to rotate when the cabinet door (2) is opened, so that the horizontal air outlet (31) moves out of the sealing shell (5) through the spring outlet (51). The elastic element (52) is also used to elastically compress when the cabinet door (2) is closed, so that the horizontal air outlet (31) moves into the sealing shell (5) through the spring outlet (51).

4. The pharmaceutical moisture-proof storage cabinet according to claim 3, characterized in that, The elastic element (52) is a cylindrical compression spring, which is located on the side of the air curtain structure (3) away from the ejector outlet (51).

5. The pharmaceutical moisture-proof storage cabinet according to claim 3, characterized in that, The air curtain structure (3) includes a first side plate (32), a second side plate (33) and an arc plate (34). The first side plate (32) and the second side plate (33) are connected at an angle. The arc plate (34) is fixedly connected to the first side plate (32) and the second side plate (33) to form the air cavity (30). The first side plate (32) and the second side plate (33) are rotatably connected to the sealing shell (5) at the included angle; the first side plate (32) has a first through hole (320) communicating with the vent (50). The horizontal air outlet (31) is located on the arc-shaped plate (34) and close to the second side plate (33); One end of the elastic element (52) is connected to the first side plate (32), and the other end is connected to the inner wall of the sealing shell (5); When the cabinet door (2) is opened, the elastic element (52) elastically pushes the first side plate (32) to rotate the air curtain structure (3) so that the horizontal air outlet (31) and part of the second side plate (33) are moved out of the sealing shell (5) through the spring outlet (51).

6. The pharmaceutical moisture-proof storage cabinet according to claim 5, characterized in that, The sealing shell (5) is provided with a rotating shaft (36) that rotates within it. The rotating shaft (36) is arranged parallel to the rotation axis of the cabinet door (2). The angle between the first side plate (32) and the second side plate (33) is fixedly connected to the rotating shaft (36).

7. The pharmaceutical moisture-proof storage cabinet according to claim 5, characterized in that, The air curtain structure (3) also includes a partition (35), which is disposed in the air cavity (30). The partition (35) is connected to the first side plate (32) and the second side plate (33) respectively. The partition (35) divides the air cavity (30) into a first cavity (301) and a second cavity (302). The partition (35) has a plurality of air guide holes (350), and the plurality of air guide holes (350) are respectively connected to the first cavity (301) and the second cavity (302). The first through hole (320) is connected to the first cavity (301), and the horizontal air outlet (31) is connected to the second cavity (302).

8. The pharmaceutical moisture-proof storage cabinet according to claim 7, characterized in that, From top to bottom, the pore density of the air guide holes (350) on the surface of the partition plate (35) gradually increases; from the first side plate (32) to the horizontal air outlet (31), the pore density of the air guide holes (350) on the surface of the partition plate (35) gradually decreases.

9. The pharmaceutical moisture-proof storage cabinet according to claim 7, characterized in that, The air guide hole (350) is a strip-shaped hole, and the length direction of the air guide hole (350) is arranged parallel to the rotation axis of the cabinet door (2).

10. The pharmaceutical moisture-proof storage cabinet according to claim 5, characterized in that, The moisture-proof storage cabinet for medicines also includes a corrugated pipe (54), one end of which is connected to the first through hole (320) of the air curtain structure (3), and the other end is connected to the vent (50) of the sealing shell (5).

11. The pharmaceutical moisture-proof storage cabinet according to any one of claims 2 to 4, characterized in that, The moisture-proof storage cabinet for medicines also includes a control board and a limit switch (6). The control board is electrically connected to the air supply structure (42) and the limit switch (6). The limit switch (6) is located in the cabinet body (1) and abuts against the cabinet door (2). Alternatively, the limit switch (6) is located inside the sealing shell (5) and abuts against the air curtain structure (3).

12. The pharmaceutical moisture-proof storage cabinet according to any one of claims 1 to 4, characterized in that, The air intake duct (4) is located on the upper side inside the cabinet (1). The air intake duct (4) extends along the thickness direction of the cabinet (1). The air inlet (13) is installed through the back panel of the cabinet (1). The air intake duct (4) is provided with a first check valve (43) near the air inlet (13), and the air intake duct (4) is provided with a second check valve (44) near the air curtain structure (3). The drying structure (41) is located between the first check valve (43) and the second check valve (44), and both the first check valve (43) and the second check valve (44) are connected along the air intake direction of the air intake duct (4).

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