Carbon dioxide incubator

Abstract

The utility model discloses a carbon dioxide incubator relates to biological experiment equipment field, including box, the box door is hinged with one side of box, and locking assembly is located between box and box door, still including sealing structure, sealing structure is located between box and box door, and sealing reinforcing assembly can strengthen the sealing performance between box and box door, the carbon dioxide incubator of this kind need not extrude sealing rubber cover, can realize the sealing between box door and box to avoid the crack or drop of sealing element and local sealing failure caused by extruding sealing element, prolong the service life of sealing element.

Description

Technical Field

[0001] This utility model relates to the field of biological experimental equipment, specifically a carbon dioxide incubator. Background Technology

[0002] Carbon dioxide incubators are key equipment in life science research, medical testing, biopharmaceuticals and other fields. They mainly provide a stable culture environment for biological samples such as cells and tissues by precisely controlling parameters such as temperature, humidity and carbon dioxide concentration inside the chamber, thus ensuring the activity and normal growth of the biological samples.

[0003] Most existing CO2 incubators use a single rubber sealing strip as the door sealing component. This sealing strip, constantly exposed to high humidity and high CO2 concentrations, is prone to aging and deformation, with its elastic modulus decreasing by 30%-40%, significantly reducing its sealing performance and leading to gas leakage. Once leakage occurs, parameters such as CO2 concentration, temperature, and humidity inside the incubator will fluctuate, affecting the culture results of biological samples.

[0004] Traditional incubators typically use a single-layer rubber sealing ring, achieving a seal by pressing the door shut. Since the sealing ring directly bears the impact of the door closing, it is prone to cracking or detachment after prolonged use. Especially in experimental settings with frequent door opening and closing, the sealing ring wears down rapidly, leading to localized seal failure. This causes fluctuations in CO2 concentration, temperature, and humidity parameters, and may allow external contaminants (such as microorganisms and particulate matter) to enter the incubator, causing cross-contamination and affecting cell growth stability. Utility Model Content

[0005] The purpose of this invention is to provide a carbon dioxide incubator that can achieve a seal between the door and the body without squeezing the sealing sleeve, thereby avoiding cracks or detachment of the seal caused by squeezing the seal and local seal failure, and extending the service life of the seal.

[0006] The above-mentioned optimized structure of this utility model is achieved through the following technical solution: a carbon dioxide incubator, including a chamber;

[0007] A door, which is hinged to one side of the box body;

[0008] A locking assembly is provided between the housing and the door;

[0009] It also includes a sealing structure, which is disposed between the box body and the box door;

[0010] A sealing reinforcement component, which enhances the sealing performance between the enclosure and the enclosure door.

[0011] In some embodiments, the sealing structure includes a sealing ring groove, which is disposed on the housing;

[0012] A sealing ring is provided on the door and is inserted into the sealing ring groove;

[0013] A sealing sleeve is fitted onto the sealing ring.

[0014] In some embodiments, the sealing reinforcement assembly includes a sliding annular groove disposed on the door;

[0015] Piston ring, wherein the piston ring is slidably and sealingly disposed within the sliding ring groove;

[0016] Multiple connecting holes are equally spaced on the cabinet door and connected to the sliding annular groove;

[0017] Multiple connecting rods are provided, which are slidably disposed within the connecting holes, and both ends of the connecting rods are respectively connected to the piston ring and the sealing ring;

[0018] An expansion chamber is located between the sealing sleeve, the sealing ring, and the door, and is connected to the connection hole. The expansion chamber is filled with gas.

[0019] In some embodiments, the connecting hole and the connecting rod are clearance-fitted.

[0020] In some embodiments, the sealing reinforcement assembly further includes a plurality of return springs disposed between the sliding ring groove on the side wall away from the piston ring and the piston ring.

[0021] In some embodiments, the sealing reinforcement assembly further includes a magnetic plate disposed on the side of the sealing ring away from the connecting rod and magnetically attracted to the side of the sealing ring groove away from the sealing ring.

[0022] In some embodiments, the attraction between the magnetic plate and the sealing ring groove is greater than the restoring force of the plurality of reset springs.

[0023] In some embodiments, the cross-section of the sealing ring is an isosceles trapezoid with rounded corners.

[0024] In summary, this utility model has the following beneficial effects:

[0025] This type of carbon dioxide incubator uses the magnetic adsorption of a plate to move a piston sleeve, thereby increasing the gas pressure in the expansion chamber. This causes the sealing sleeve to expand and fill the gap between the door and the chamber body, preventing gas leakage. It achieves a seal between the door and the chamber body without squeezing the sealing sleeve, thus avoiding cracks or detachment of the seal caused by squeezing the seal and local seal failure, and extending the service life of the seal.

[0026] This invention forms a multi-layered sealing protection structure by interlocking the sealing ring with the sealing ring groove and expanding and filling the sealing sleeve 43, which can improve the sealing effect between the box door and the box body. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the box door when closed according to this utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the box door of this utility model when it is open;

[0029] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0030] Figure 4 This is a cross-sectional view showing the connection between the sealing reinforcement component of this utility model and the housing and sealing ring.

[0031] In the diagram: 1. Box body; 2. Box door; 3. Locking assembly; 4. Sealing structure; 41. Sealing ring groove; 42. Sealing ring; 43. Sealing sleeve; 5. Sealing reinforcement assembly; 51. Sliding ring groove; 52. Piston ring; 53. Connecting hole; 54. Connecting rod; 55. Expansion chamber; 56. Return spring; 57. Magnetic plate. Detailed Implementation

[0032] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] refer to Figure 1-4A carbon dioxide incubator includes a body 1, a door 2, a locking assembly 3, a sealing structure 4, and a sealing reinforcement assembly 5. The body 1 is the main body of the incubator, used to contain biological samples and provide culture space. The body 1 contains a culture chamber, a tray, a carbon dioxide assembly, a carbon dioxide sensor, and other structures, which are existing technologies and will not be described in detail here. The door 2 is hinged to one side of the body 1 to open and close the door 2. The locking assembly 3 is located between the body 1 and the door 2 and can lock the door 2 after it is closed. The locking assembly 3 can be latched, which is existing technology and will not be described in detail here. The sealing structure 4 is located between the body 1 and the door 2 to achieve a basic seal. The sealing reinforcement assembly 5 can enhance the sealing performance between the body 1 and the door 2 to ensure the stability of the culture environment inside the incubator.

[0034] In some embodiments, the sealing structure 4 includes a sealing ring groove 41, a sealing ring 42, and a sealing sleeve 43. The sealing ring groove 41 is located at the edge of the opening of the housing 1 and can be an annular groove structure. The sealing ring 42 is located on the inner side of the door 2 and is inserted into the sealing ring groove 41 to achieve basic positioning. The size of the sealing ring groove 41 can be designed according to the size of the sealing ring 42 to ensure that the sealing ring 42 can be smoothly inserted into the sealing ring groove 41 while providing a certain sealing pressure. The sealing ring 42 can be made of silicone rubber, which has the characteristics of high temperature resistance, aging resistance, and low compression set. The sealing sleeve 43 is fitted on the outer surface of the sealing ring 42 and can be integrally formed with the sealing ring 42 through a vulcanization process to avoid the risk of falling off due to poor adhesion. It contacts the inner wall of the sealing ring groove 41 and fills the tiny gap between the sealing ring 42 and the sealing ring groove 41 through elastic deformation to form a preliminary sealing structure.

[0035] In some embodiments, the sealing reinforcement component 5 includes a sliding ring groove 51, a piston ring 52, a plurality of connecting holes 53, a plurality of connecting rods 54, and an expansion cavity 55. The sliding ring groove 51 is provided on the door 2 and can be an annular groove structure, and is coaxial with the sealing ring 42. The depth and width of the sliding ring groove 51 are designed according to the size of the piston ring 52 to ensure that the piston ring 52 can slide freely in the groove while achieving a good seal. The piston ring 52 is slidably and sealed within the sliding ring groove 51, which is existing technology and will not be described in detail here. The sealing pressure between the sealing ring 42 and the sealing ring groove 41 can be adjusted by moving the piston ring 52. The piston ring 52 can be made of polytetrafluoroethylene, and its outer diameter is tightly fitted with the inner wall of the sliding ring groove 51 to ensure that gas does not leak from between the piston ring 52 and the sliding ring groove 51. Multiple connecting holes 53 are equally spaced on the door 2 and connected to the sliding ring groove 51. The connecting rod 54 is slidably disposed within the connecting hole 53, and both ends of the connecting rod 54 are connected to the piston ring 52 and the sealing ring 42, respectively. The expansion chamber 55 is disposed between the sealing sleeve 43, the sealing ring 42, and the door 2, and is connected to the connecting hole 53. The expansion chamber 55 is filled with inert gases such as nitrogen.

[0036] In some embodiments, the connecting hole 53 and the connecting rod 54 are clearance-fitted, which allows the connecting rod 54 to slide while simultaneously allowing gas to flow between the expansion chamber 55 and the sliding annular groove 51, thereby changing the gas pressure inside the expansion chamber 55.

[0037] In some embodiments, the sealing reinforcement assembly 5 further includes a plurality of return springs 56, which are disposed between the side wall of the sliding ring groove 51 away from the piston ring 52 and the piston ring 52, and can provide a restoring force after the door 2 is opened to reset the sealing ring 42.

[0038] In some embodiments, the sealing reinforcement component 5 further includes a magnetic plate 57. The magnetic plate 57 is disposed on the side of the sealing ring 42 away from the connecting rod 54 and is magnetically attracted to the side of the sealing ring groove 41 away from the sealing ring 42. Through the magnetic attraction of the magnetic plate 57, the piston ring 52 can be driven to slide in the sliding ring groove 51, thereby increasing the air pressure in the expansion chamber 55, causing the sealing sleeve 43 to expand and fill the tiny gap between the sealing ring 42 and the sealing ring groove 41, thereby achieving a seal between the door 2 and the box body 1, while preventing damage.

[0039] In some embodiments, the attraction between the magnetic plate 57 and the sealing ring groove 41 is greater than the sum of the restoring force of the multiple return springs 56 and the frictional force of the piston ring 52 sliding in the sliding ring groove 51. Thus, after the door 2 is closed, the magnetic force between the magnetic plate 57 and the sealing ring groove 41 can help maintain the sealing state of the sealing ring 42, thereby improving the stability of the seal.

[0040] In some embodiments, the cross-section of the sealing ring 42 can be an isosceles trapezoid with rounded corners, which facilitates the insertion and engagement between the sealing ring 42 and the sealing ring groove 41. At the same time, when the sealing ring 42 is inserted into the sealing ring groove 41, the sealing pressure can gradually increase as the door closes, resulting in a better sealing effect.

[0041] The specific working principle is as follows:

[0042] In use, first open the chamber door 2 and place the biological sample to be cultured into the chamber. Close the chamber door 2. After the chamber door 2 is closed and locked by the locking assembly 3, the sealing ring 42 is inserted into the sealing ring groove 41, and the sealing sleeve 43 fills the gap between the two, forming a preliminary seal. At this time, the magnetic plate 57 moves towards the inner wall of the sealing ring groove 41 under the action of magnetic attraction and adheres to the inner wall of the sealing ring groove 41. The movement of the magnetic plate 57 will drive the piston ring 52 to move towards the magnetic plate 57 through multiple connecting rods 54. The piston ring 52 will squeeze the gas in the sliding ring groove 51 to flow into the expansion chamber 55, thereby increasing the gas pressure in the expansion chamber 55, causing the sealing sleeve 43 to expand, further filling the gap between the sealing ring 42 and the sealing ring groove 41, and improving the sealing effect. At this time, the return spring 56 is deformed by pressure.

[0043] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A carbon dioxide incubator, comprising a chamber (1); Box door (2), the box door (2) is hinged to one side of the box body (1); Locking assembly (3), the locking assembly (3) is disposed between the box body (1) and the box door (2); Its features are: It also includes a sealing structure (4), which is disposed between the box body (1) and the box door (2); The sealing reinforcement component (5) can enhance the sealing performance between the box body (1) and the box door (2).

2. A carbon dioxide incubator according to claim 1, characterized in that: The sealing structure (4) includes a sealing ring groove (41), which is provided on the housing (1); A sealing ring (42) is provided on the box door (2) and is inserted into the sealing ring groove (41); A sealing sleeve (43) is fitted onto the sealing ring (42).

3. A carbon dioxide incubator according to claim 2, characterized in that: The sealing reinforcement component (5) includes a sliding annular groove (51), which is provided on the door (2); Piston ring (52), the piston ring (52) is slidably and sealingly disposed in the sliding ring groove (51); Multiple connecting holes (53) are provided at equal intervals on the box door (2) and connected to the sliding annular groove (51); Multiple connecting rods (54) are slidably disposed in the connecting hole (53), and both ends of the connecting rods (54) are respectively connected to the piston ring (52) and the sealing ring (42); An expansion cavity (55) is located between the sealing sleeve (43), the sealing ring (42), and the box door (2), and is connected to the connecting hole (53). The expansion cavity (55) is filled with gas.

4. A carbon dioxide incubator according to claim 3, characterized in that: The connecting hole (53) is clearance-fitted with the connecting rod (54).

5. A carbon dioxide incubator according to claim 3, characterized in that: The sealing reinforcement assembly (5) also includes a plurality of return springs (56), which are disposed between the sliding ring groove (51) on the side wall away from the piston ring (52) and the piston ring (52).

6. A carbon dioxide incubator according to claim 5, characterized in that: The sealing reinforcement component (5) also includes a magnetic plate (57), which is located on the side of the sealing ring (42) away from the connecting rod (54) and is magnetically attracted to the side of the sealing ring groove (41) away from the sealing ring (42).

7. A carbon dioxide incubator according to claim 6, characterized in that: The attraction between the magnetic plate (57) and the sealing ring groove (41) is greater than the restoring force of the plurality of reset springs (56).

8. A carbon dioxide incubator according to claim 2, characterized in that: The cross-section of the sealing ring (42) is an isosceles trapezoid with rounded corners.

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