Door body assembly matched with multi-layer commodity shelf and incubator

Abstract

The invention relates to the technical field of automatic cell culture equipment, and discloses a door body assembly matched with a multi-layer storage rack, the door body assembly comprises a door frame, a track assembly, a door body unit and a driving assembly, the door frame forms a plurality of pick-and-place openings corresponding to the multi-layer storage rack; the rail assembly and the door frame form a sliding rail in the length direction of the pick-and-place opening; the door body unit comprises a plurality of translation sliding doors, the plurality of translation sliding doors are connected to the sliding rails in a sliding mode, and the plurality of translation sliding doors correspond to the multiple layers of storage racks; and the driving assembly is used for driving the translation sliding doors to move, when the storage objects are taken and placed from the storage rack, the driving assembly drives the translation sliding doors corresponding to the storage objects to be opened, and the other translation sliding doors are kept in a closed state. The invention further discloses an incubator.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automated cell culture equipment, for example to a door assembly adapted to a multi-layer shelf, and an incubator. BACKGROUND

[0002] Some incubators are equipped with automatic taking and placing devices to realize automatic operation on culture objects. When the incubator is opened, the taking and placing device performs taking and placing operation through a taking and placing opening. The sealing performance of the incubator affects the culture environment of the incubator.

[0003] In order to improve the sealing performance of the incubator, a carbon dioxide incubator with small temperature and carbon dioxide concentration changes after opening the door is disclosed in the related art, which comprises a box body, an outer door body is arranged on the outer surface of the box body, and a plurality of inner door bodies are arranged on the inner side of the outer door body on the surface of the box body. The inner door body comprises a hinge, a pressing door opening structure and a glass door, the hinge is fixedly connected to the inner door body, the glass door is movably connected to the hinge, the pressing door opening structure is fixedly installed on the glass door, and the glass door is fixedly connected with a sealing rubber around the glass door. The inner door body further comprises a pull-out bracket arranged in the inner door body, and the pull-out bracket is pulled out by opening the glass door. The outer door body is opened, one of the glass doors is opened according to the use condition, and the pull-out bracket is pulled out at the same time. The baffle at the end of the pull-out bracket and the sealing rubber can be tightly attached to the frame of the inner door body, thereby playing a certain sealing role and effectively reducing the changes of temperature and carbon dioxide concentration.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art: When taking and placing culture objects, the gas in the incubator exchanges with the gas outside, and the sealing performance of the incubator when opening and closing the door needs to be further improved. SUMMARY

[0005] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important components or to delineate the protection scope of these embodiments, but as a prelude to the detailed description below.

[0006] The embodiments of the present disclosure provide a door assembly adapted to a multi-layer shelf and an incubator to improve the sealing performance of the incubator when opening and closing the door.

[0007] In some embodiments, the door assembly of the multi-layer shelf includes a door frame, a track assembly, a door unit and a driving assembly. The door frame forms a plurality of access openings corresponding to the multi-layer shelf. The track assembly forms a sliding track along the length direction of the access opening. The door unit includes a plurality of sliding doors, each of which is slidingly connected to the sliding track and corresponds to the multi-layer shelf. The driving assembly drives the sliding doors to move. When an object is taken from or stored in the shelf, the driving assembly drives the sliding door corresponding to the object to open, and the remaining sliding doors remain closed.

[0008] In some embodiments, the plurality of sliding doors includes an outer sliding door and an inner sliding door. When the access opening is closed, the edge of the outer sliding door overlaps with the edge of the inner sliding door. When the access opening is opened, the outer sliding door overlaps with the inner sliding door.

[0009] In some embodiments, the inner side of the outer sliding door is slidingly sealed with the outer side of the inner sliding door.

[0010] In some embodiments, the door frame includes a sealing plate, which is provided with the access opening. The inner sliding door is slidingly sealed with the sealing plate, and the outer sliding door is slidingly sealed with the sealing plate.

[0011] In some embodiments, the outer sliding door includes a door body, a first side plate and a second side plate. The first side plate is connected to one side of the door body along the sliding direction of the sliding track. The second side plate is connected to the other side of the door body along the sliding direction of the sliding track. One side end surface of the inner sliding door is slidingly sealed with the first side plate, and the other side end surface of the inner sliding door is slidingly sealed with the second side plate.

[0012] In some embodiments, the driving assembly includes a first rack, an outer walking motor and an outer gear. The first rack is arranged on one side of the access opening along the sliding direction of the sliding track. The outer walking motor is connected to the outer sliding door. The outer gear is connected to the driving shaft of the outer walking motor and engages with the first rack. When the outer walking motor rotates, it drives the outer sliding door to move in parallel.

[0013] In some embodiments, the track assembly includes two track strips located on both sides of the access opening. The position where the inner sliding door contacts the sealing plate is located within the two track strips, and the position where the outer sliding door contacts the sealing plate is located outside the two track strips. The inner sliding door is provided with a sealing member on the side that contacts the track strip, and / or the first side plate and the second side plate are provided with sealing blocks on the sides that face the track strip.

[0014] In some embodiments, the driving assembly further comprises a second rack, an inner side walking motor and an inner side gear, wherein the second rack is arranged on the other side of the taking and placing opening along the sliding direction of the sliding track; the inner side walking motor is connected to the inner side sliding door; the inner side gear is connected to the driving shaft of the inner side walking motor and engaged with the second rack, and the inner side walking motor drives the inner side sliding door to move in parallel when rotating.

[0015] In some embodiments, the door body assembly comprises at least two outer side sliding doors, and the two outer side sliding doors are arranged on the two sides of one inner side sliding door when closing the taking and placing opening.

[0016] In some embodiments, the door body assembly comprises at least two inner side sliding doors, and the two inner side sliding doors are arranged on the two sides of one outer side sliding door when closing the taking and placing opening.

[0017] In some embodiments, the door body assembly comprises a plurality of inner side sliding doors and a plurality of outer side sliding doors, and the plurality of inner side sliding doors and the plurality of outer side sliding doors are arranged alternately when closing the taking and placing opening.

[0018] In some embodiments, the incubator comprises a cabinet, a plurality of layers of shelves and the above-mentioned door body assembly, wherein the cabinet is configured with a containing space; the plurality of layers of shelves are arranged rotatably in the containing space; and the door body assembly is arranged on the cabinet.

[0019] The door body assembly and the incubator provided by the embodiments of the present disclosure can achieve the following technical effects: The door body assembly provided by the embodiments of the present disclosure can obviously reduce the opening degree of the taking and placing opening when the taking and placing opening is opened, reduce the exchange of gas inside and outside the cabinet, thereby reducing the change of gas concentration and temperature change in the interior of the incubator; when the sliding door is opened, the disturbance to the airflow in the interior of the incubator is small, which is conducive to maintaining a stable culture atmosphere in the interior of the incubator; the sliding door corresponding to the storage object is opened, which can also add a physical layer of insurance for the automatic taking and placing device, and reduce or avoid the storage object being placed in a wrong layer.

[0020] The foregoing general description and the following description are only exemplary and explanatory, and are not used to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitation on the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute proportional limitation, and wherein: Fig. 1 is a structural schematic diagram of an incubator provided by the embodiments of the present disclosure; Fig. 2 is a structural schematic diagram of an incubator without a door body assembly provided by the embodiments of the present disclosure; Fig. 3 This is a schematic diagram of the structure of a door assembly provided in an embodiment of this disclosure; Fig. 4 This is a schematic diagram of another door component provided in an embodiment of this disclosure; Fig. 5 This is a schematic diagram of another door component provided in an embodiment of this disclosure; Fig. 6 This is a schematic diagram of the structure of an outer sliding door provided in an embodiment of this disclosure.

[0022] Figure label: 10: Housing; 20: Door assembly; 100: Door frame; 110: Sealing plate; 111: Loading / unloading port; 200: Track assembly; 310: Sliding door; 320: Outer sliding door; 321: Sliding door body; 322: First side panel; 323: Second side panel; 324: Third side panel; 325: Fourth side panel; 326: Sealing block; 330: Inner sliding door; 411: First rack; 412: Outer travel motor; 413: Outer gear; 421: Second rack; 422: Inner travel motor; 423: Inner gear. Detailed Implementation

[0023] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0024] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0025] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0026] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0027] Unless otherwise specified, the term "a plurality of" means two or more.

[0028] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the preceding and following objects. For example, A / B represents: A or B.

[0029] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0030] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0031] Some incubators are equipped with automatic taking and placing devices to realize automatic operation on the culture objects. When the incubator is opened, the taking and placing device performs taking and placing operation through the taking and placing opening. The sealing performance of the incubator affects the culture environment of the incubator. In order to improve the sealing performance of the incubator, a carbon dioxide incubator with small temperature and carbon dioxide concentration changes after opening the door is disclosed in the related art, which comprises a box body, an outer door body is arranged on the outer surface of the box body, and a plurality of inner door bodies are arranged on the inner side of the outer door body on the surface of the box body. The inner door body comprises a hinge, a pressing door opening structure and a glass door, the hinge is fixedly connected to the inner door body, the glass door is movably connected with the hinge, the pressing door opening structure is fixedly installed on the glass door, and the glass door is fixedly connected with a sealing rubber around. The inside of the inner door body is also provided with a pull-out bracket arranged in a pull-out manner, and the pull-out bracket is pulled out by opening the glass door. The outer door body is opened, and according to the use condition, one of the glass doors is opened, and the pull-out bracket is pulled out at the same time. The baffle at the end of the pull-out bracket and the sealing rubber can be tightly attached to the frame of the inner door body, thereby playing a certain sealing role. The problem of the related art is that when the culture objects are taken and placed, the gas in the incubator will exchange with the gas outside, and the sealing performance of the incubator when the door is opened and closed needs to be further improved.

[0032] In order to improve the sealing effect of the incubator when the door is opened and closed, in combination with Figs. 1 to 6 As shown in the figure, the present disclosure provides a door body assembly 20 suitable for a multi-layer shelf, which comprises a door frame 100, a track assembly 200, a door body unit and a driving assembly. The door frame 100 forms a plurality of taking and placing openings 111 corresponding to the multi-layer shelf. The track assembly 200 forms a sliding track along the length direction of the taking and placing opening 111 with the door frame 100. The door body unit comprises a plurality of translation sliding doors 310, each of which is slidably connected to the sliding track, and the plurality of translation sliding doors 310 correspond to the multi-layer shelf. The driving assembly is used to drive the translation sliding door 310 to move. When the storage object is taken and placed from the shelf, the driving assembly drives the translation sliding door 310 corresponding to the storage object to open, and the remaining translation sliding doors 310 remain in a closed state.

[0033] The door body assembly 20 provided by the present disclosure is used for an incubator with a multi-layer shelf. In an automatic biological laboratory, the multi-layer shelf of the incubator can rotate around the vertical shaft in the box body 10, and needs to be rotated to align with the target layer and the taking and placing opening 111 during taking and placing. Because the taking and placing opening 111 needs to cover all the culture layers, the single opening area of the traditional integral type opening is too large, which easily leads to a large amount of escape of internal CO2 gas and a sudden drop in temperature.

[0034] In the embodiments of the present disclosure, the door body assembly 20 has a plurality of translation sliding doors 310 corresponding to a plurality of shelves. As an implementation form, one translation sliding door 310 corresponds to one shelf, and as another implementation form, one translation sliding door 310 corresponds to a plurality of shelves. Taking the vertical stacking of the shelves as an example, the translation sliding door 310 slides in the up-down direction. The track assembly 200 can be two grooves extending in the up-down direction and respectively abutting the left side and the right side of the plurality of translation sliding doors 310 to constrain the up-down sliding of the translation sliding door 310. The drive assembly can drive any one of the plurality of translation sliding doors to slide, so as to open the position of the access opening 111 corresponding to the translation sliding door 310. When taking or placing a storage object, the shelf is rotated to a position corresponding to the access opening 111, the translation sliding door 310 corresponding to the target layer of the taken or placed object is slid open, and the remaining translation sliding doors 310 remain closed.

[0035] The door body assembly 20 provided by the embodiments of the present disclosure can significantly reduce the opening degree of the access opening when the access opening is opened, reduce the exchange of gas inside and outside the cabinet, thereby reducing the change of gas concentration and temperature change in the cabinet; when the translation sliding door is opened, the airflow disturbance in the cabinet is small, which is conducive to maintaining a stable culture atmosphere in the cabinet; and the opening of the translation door corresponding to the storage object can also increase a physical layer of insurance for the automatic taking and placing device, and reduce or avoid the storage object being placed in the wrong layer.

[0036] Optionally, the plurality of translation sliding doors 310 include an outer sliding door 320 and an inner sliding door 330, the edge portion of the outer sliding door 320 is overlapped with the edge portion of the inner sliding door 330 when the access opening 111 is closed, and the outer sliding door 320 is overlapped with the inner sliding door 330 when the access opening 111 is opened.

[0037] When the plurality of translation sliding doors 310 are abutted, a gap is easily generated between adjacent translation sliding doors 310, which affects the sealing effect of the incubator. Therefore, the door body assembly 20 disclosed by the present application adopts the form of cooperation of the outer sliding door 320 and the inner sliding door 330. Specifically, the inner sliding door 330 is close to the accommodation space inside the incubator, and the outer sliding door 320 is close to the external environment of the cabinet 10, forming an inner-outer layered structure, and the edge portion of the outer sliding door 320 covers the edge portion of the inner sliding door 330. In the state of closing the access opening 111, the edge portion overlap can directly eliminate the abutment gap between the two translation sliding doors 310, avoiding the escape of CO2 gas in the incubator from the gap; in the opened state, the overlapping design of the translation sliding door 310 can greatly reduce the space required for sliding, so that the sliding between adjacent sliding doors does not interfere, and the freedom degree of sliding of the translation sliding door 310 is improved.

[0038] Optionally, the inner side of the outer sliding door 320 and the outer side of the inner sliding door 330 are slidingly sealed.

[0039] As a form of sliding seal, the inner side of the outer sliding door 320 or the outer side of the inner sliding door 330 is fixed with an elastic seal, which can be made of rubber strips, silica gel strips, etc. The shape can be designed to be strip-shaped for linear contact surface, U-shaped for edge angle contact surface, or stepped for high-low difference contact surface. The fixing method can be adhesion or slot embedding. With such a setting form, the structure is simple and easy to implement.

[0040] As another optional implementation, the inner side of the outer sliding door 320 and the outer side of the inner sliding door 330 are respectively fixed with a seal, and the two seals are pressed against each other to achieve double sealing. With such a setting form, the contact surface of the seal of the outer sliding door 320 and the inner sliding door 330 with the other door can always be attached during sliding, and will not be separated due to the movement of the sliding door.

[0041] With such a setting form, the outer sliding door 320 and the inner sliding door 330 can maintain sealing throughout the stroke, reducing the change in resistance during the sliding of the translational sliding door 310, making the sliding of the translational sliding door 310 more smooth. In addition, such a full-stroke sealing form can avoid the problem of sealing failure when the opening and closing access 111 is opened or closed, improving the sealing performance of the incubator. The outer sliding door 320 and the inner sliding door 330 can maintain a sealed state throughout the sliding stroke of the sliding door, from opening to closing, and can block gas exchange; the elastic seal can also compensate for the small errors caused by the sliding door processing or assembly, reducing the gap caused by insufficient precision.

[0042] Optionally, the seal for sliding sealing of the outer sliding door 320 and the inner sliding door 330 is made of a modified polytetrafluoroethylene (PTFE) coated ethylene propylene diene (EPDM) rubber strip; wherein the PTFE coating has a thickness of 0.05 to 0.1 mm, covering the contact surface of the rubber strip and the sliding door.

[0043] The dynamic friction coefficient of the modified PTFE coated rubber strip is ≤0.15, which can reduce the friction coefficient between the outer sliding door 320 and the inner sliding door 330. The low friction characteristic makes the sliding door stable in sliding speed without jamming or speed fluctuation, while the elastic material can still compensate for the 0.1 to 0.3 mm sliding door assembly error, avoiding the increase of the sealing gap caused by the reduction of the friction coefficient, and maintaining the sealing effect of the incubator.

[0044] Optionally, the seal for sliding sealing of the sliding door and the sealing plate 110 is made of a silica gel strip containing graphite filler; wherein the graphite filling amount is 3% to 5%.

[0045] The dynamic friction coefficient of the graphite-containing silica gel strip is less than or equal to 0.12, so as to reduce the friction coefficient between the sliding door and the sealing plate 110. The low friction property stabilizes the sliding speed of the sliding door, without jamming or speed fluctuation, while the elastic material can still compensate for the sliding door assembly error of 0.1 to 0.3 mm, avoid increasing the sealing gap due to the reduction of the friction coefficient, and maintain the sealing effect of the incubator.

[0046] Optionally, the outer sliding door further comprises a third side plate 324 and a fourth side plate 325, the third side plate is opposite to the fourth side plate, and the inner side of the third side plate is in sliding sealing with the inner sliding door, and the inner side of the fourth side plate is in sliding sealing with the inner sliding door.

[0047] The inner sliding door and the outer sliding door are in sliding sealing through the third side plate and the second side plate, so as to reduce the friction between the inner sliding door and the outer sliding door.

[0048] Optionally, the sealing block comprises a nylon hair strip.

[0049] The dynamic friction coefficient of the nylon hair strip is relatively small, so as to reduce the sliding resistance of the outer sliding door 320.

[0050] Optionally, the door frame 100 comprises a sealing plate 110, and the sealing plate 110 is provided with a taking and placing opening 111; the inner sliding door 330 is in sliding sealing with the sealing plate 110, and the outer sliding door 320 is in sliding sealing with the sealing plate 110.

[0051] As one form of the taking and placing opening 111, the taking and placing opening 111 comprises a plurality of small openings, each small opening corresponds to one layer or one group of shelves, and adjacent small openings are separated by a rib. The rib and the sealing plate 110 can be integrally formed or fixed by welding. By adopting such a form, the rib can enhance the overall structural strength of the sealing plate 110, avoid deformation of the sealing plate 110 due to the opening being too large during long-term use, and when a single sliding door fails, only the corresponding small opening is affected, without interfering with the normal use of other small openings.

[0052] As another form of the taking and placing opening 111, the taking and placing opening 111 comprises one through large opening, and the single large opening covers all shelf layers. Such a form is simpler in processing technology and lower in cost, and is suitable for scenarios with fewer shelf layers or batch taking and placing of multiple layers of culture objects.

[0053] The sealing forms of the inner sliding door 330 and the outer sliding door 320 and the sealing plate 110 are all realized by sealing strips. As one form of realization, a ring-shaped clamping groove is formed at the edge of the taking and placing opening 111 of the sealing plate 110, and an elastic sealing strip is embedded in the clamping groove, and the edge of the sliding door is tightly attached to the sealing strip when the sliding door slides. As another form of realization, the sealing strip is fixed at the edge of the side of the sliding door, so that the sealing strip directly contacts the flat surface of the sealing plate 110. Both forms can make the sealing strip cover all the contact areas between the sliding door and the sealing plate 110.

[0054] With such a setting form, the sealing of the translational sliding door 310 is facilitated. The sliding sealing of the sealing plate 110 and the sliding door can eliminate the gap between the door body and the door frame 100, and in combination with the sliding sealing of multiple sliding doors, the overall sealing performance of the incubator is significantly improved. In addition, the elastic sealing strip can buffer the collision of the sliding door sliding to the limit position with the sealing plate 110, reduce the wear of the components, and prolong the service life of the sliding door and the sealing plate 110.

[0055] Optionally, the outer sliding door 320 comprises a sliding door body 321, a first side plate 322 and a second side plate 323, wherein the first side plate 322 is connected to one side of the sliding door body 321 along the sliding direction of the sliding track; the second side plate 323 is connected to the other side of the sliding door body 321 along the sliding direction of the sliding track; wherein one side end surface of the inner sliding door 330 is in sliding sealing with the first side plate 322, and the other side end surface of the inner sliding door 330 is in sliding sealing with the second side plate 323.

[0056] The extension directions of the first side plate 322 and the second side plate 323 are along the sliding direction of the sliding track, and when the sliding door slides up and down, the side plates extend in the up-down direction. The lengths of the first side plate 322 and the second side plate 323 are consistent with the size of the sliding door body 321 along the sliding direction, forming a stop structure on both sides of the sliding door body 321. In this way, on the one hand, the gap between the side end surface of the inner sliding door 330 and the door frame 100 can be shielded, and on the other hand, the gap between the second sliding door and the sealing plate 110 can be improved. The side plate and the sliding door body 321 can be connected by welding, one-piece forming or bolt connection process, so as to avoid loosening and deformation of the side plate when the sliding door slides.

[0057] As an optional embodiment, the outer sliding door 320 comprises upper and lower frames and left and right frames, wherein the left and right frames extending along the sliding direction of the sliding track are respectively the first side plate 322 and the second side plate 323. The frame structure can improve the overall rigidity of the outer sliding door 320 and improve the sealing effect between the outer sliding door 320 and the sealing plate 110.

[0058] As an implementation form of the sliding sealing between the inner sliding door 330 and the first side plate 322 and the second side plate 323, the inner sliding door 330 and the first side plate 322 and the second side plate 323 are fixed with sealing rubber strips on the side facing the inner sliding door 330, and the rubber strips are tightly attached to the side end surface of the inner sliding door 330. As another implementation form of the sliding sealing between the inner sliding door 330 and the first side plate 322 and the second side plate 323, the two side end surfaces of the inner sliding door 330 are provided with protruding sealing bosses, and the bosses are embedded in the pre-designed sealing grooves of the first side plate 322 and the second side plate 323.

[0059] The side panel's edge structure can seal the gap between the inner sliding door 330 and the door frame 100 from the side, preventing gas from escaping from the side of the sliding door. The sealing design of the side end face further improves the circumferential sealing system of the sliding door, enabling the door assembly 20 to form an all-round seal in the internal and external, left and right directions, reducing the gas exchange rate inside and outside the box 10.

[0060] Optionally, the drive assembly includes a first rack 411, an outer travel motor 412, and an outer gear 413. The first rack 411 is disposed on one side of the pick-up and put-down opening 111 along the sliding direction of the sliding track. The outer travel motor 412 is connected to the outer sliding door 320. The outer gear 413 is connected to the drive shaft of the outer travel motor 412 and meshes with the first rack 411. When the outer travel motor 412 rotates, it drives the outer sliding door 320 to move in parallel.

[0061] The fixing position of the first rack 411 can be selected from the edge of the door frame 100 on one side of the loading and unloading port 111, the side of the track assembly 200, or the protrusion of the sealing plate 110. The fixing method can be screw fastening or slot positioning.

[0062] The outer travel motor 412 can be fixed to the top, bottom or side of the sliding door body 321, and the motor output shaft needs to be connected to the outer gear 413.

[0063] The rack and pinion transmission structure is simple and has a low failure rate. It can achieve precise positioning of the outer sliding door 320, avoiding incomplete closure and sealing failure due to positioning deviation. The motor drive mode requires no manual operation and can be linked with the control system of the automatic pick-and-place device to realize the automated process of pick-and-place command, sliding door opening, pick-and-place completion, and sliding door closing, thereby improving operational efficiency.

[0064] Optionally, the inner sliding door 330 contacts the sealing plate 110 within the two track strips, while the outer sliding door 320 contacts the sealing plate 110 outside the two track strips.

[0065] After the track bar is installed on the sealing plate 110, it has a good sealing effect with the sealing plate 110. The contact position between the inner sliding door 330 and the sealing plate 110 is inside the two track bars, and the contact position between the outer sliding door 320 and the sealing plate 110 is outside the two track bars. In this way, the loading and unloading port 111 is sealed in all directions through the inner sliding door 330, the track bar and the outer sliding door 320.

[0066] Optionally, a sealing block 326 is provided on the side of the first side plate 322 and the second side plate 323 facing the track bar.

[0067] This can further improve the sealing effect between the track strip and the outer sliding door 320.

[0068] Optionally, the inner side sliding door 330 is provided with a sealing element on the side facing the track bar.

[0069] This can further improve the sealing effect between the track bar and the inner side sliding door 330.

[0070] Optionally, the drive assembly further comprises a second rack 421, an inner side walking motor 422, and an inner side gear 423, wherein the second rack 421 is arranged on the other side of the access opening 111 along the sliding direction of the sliding track; the inner side walking motor 422 is connected to the inner side sliding door 330; the inner side gear 423 is connected to the drive shaft of the inner side walking motor 422 and engages with the second rack 421, and the inner side walking motor 422 drives the inner side sliding door 330 to move in parallel when rotating.

[0071] The second rack 421 is symmetrically arranged on the left and right sides of the access opening 111 with the first rack 411. The inner side walking motor 422 can be fixed on the top, bottom or side of the sliding door. With such an arrangement, interference between adjacent outer side walking gears and inner side walking gears is reduced or avoided, and the degree of freedom when opening a single outer side sliding door 320 or a single inner side sliding door 330 is improved.

[0072] Optionally, the door body assembly 20 comprises at least two outer side sliding doors 320, which are located on the two sides of one inner side sliding door 330 when the access opening 111 is closed.

[0073] The inner side sliding door 330 is arranged in the middle region of the access opening 111, shielding the middle part of the access region, and the two outer side sliding doors 320 are respectively arranged on the upper and lower sides of the inner side sliding door 330, each shielding the corresponding side of the access region, and the overlap width between the sliding doors needs to be gapless when closed.

[0074] The outer side sliding door 320 can be slid open away from the inner side sliding door 330, or slid to overlap with the inner side sliding door 330.

[0075] This can realize the partitioned opening of the access opening 111, and only opening the outer side sliding door 320 on the target side can complete the access operation of the corresponding region, further reducing the single opening area and the amount of gas escaping; when closed, the two outer side sliding doors 320 are overlapped on the two sides of the inner side sliding door 330, forming multiple overlapping seals and reducing the weak sealing points in the middle region; at the same time, the multiple outer side sliding doors 320 design can disperse the size of a single sliding door, avoiding the sliding inconvenience or deformation caused by the large size of the sliding door after long-term use, and improving the overall structural stability.

[0076] Optionally, the door body assembly 20 comprises at least two inner side sliding doors 330, which are located on the two sides of one outer side sliding door 320 when the access opening 111 is closed.

[0077] The outer side sliding door 320 is arranged at the outer side area of the taking and placing opening 111, covers the whole width of the taking and placing opening 111, and plays a role of a basic sealing layer. The two inner side sliding doors 330 are respectively arranged at the upper and lower sides of the inner side of the outer side sliding door 320, and each corresponds to a group of shelves.

[0078] The inner side sliding door 330 can slide to the direction of the outer side sliding door 320 to be overlapped and opened, or slide to the direction away from the outer side sliding door 320.

[0079] The outer side sliding door 320 covers the whole width, and even if the inner side sliding door 330 is opened, the outer side sliding door 320 can still block part of the taking and placing opening 111, reducing the direct exchange of internal gas with the outside. The partition control of the two inner side sliding doors 330 can realize partition taking and placing, avoiding the leakage of gas on the other side due to the opening of the single inner side sliding door 330. At the same time, the inner side sliding door 330 is located at the inner side of the outer side sliding door 320 and is protected by the outer side sliding door 320, which can reduce the pollution of dust and water vapor in the external environment to the sealing element of the inner side sliding door 330, prolong the service life of the sealing element, and reduce the maintenance cost.

[0080] Optionally, the door body assembly 20 includes a plurality of inner side sliding doors 330 and a plurality of outer side sliding doors 320, which are arranged alternately when the taking and placing opening 111 is closed.

[0081] The inner side sliding doors 330 and the outer side sliding doors 320 are arranged alternately in sequence along the length direction of the taking and placing opening 111, and the edge parts of adjacent sliding doors need to be overlapped without gaps when closed.

[0082] The total number of sliding doors is determined according to the total number of shelves, for example, 6-layer shelves can be provided with 3 inner side sliding doors and 3 outer side sliding doors, or 2 inner side sliding doors and 2 outer side sliding doors, which can adapt to different layer number requirements.

[0083] The alternate arrangement forms an inner side and outer side overlapping seal between adjacent sliding doors, and there is no direct docking of a single type of sliding door, which reduces the sealing weak point caused by the same type of sliding door structure from the structure. Each sliding door corresponds to a small number of layers, further reducing the single door opening area, and minimizing the gas exchange amount. At the same time, the alternate distribution of multiple sliding doors can disperse the stress of the door frame 100, avoid the deformation of the door frame 100 caused by excessive local stress, and prolong the overall service life of the door body assembly 20.

[0084] The embodiment of the present disclosure provides a incubator, which comprises a cabinet 10, a plurality of shelves and a door body assembly 20 as described above, wherein the cabinet 10 is configured with a containing space; the plurality of shelves are arranged in the containing space in a rotatable manner; and the door body assembly 20 is arranged on the cabinet 10.

[0085] The box body 10 as a basic frame can adopt a material or structure with good heat preservation performance to stabilize the temperature of the accommodation space. The accommodation space can be configured with conventional function modules, including a temperature control module, a CO2 concentration control module, and an air circulation module. The multi-layer storage shelves are rotatably connected to the top or bottom of the box body 10 through a rotating shaft. The rotating drive can be motor-driven or manually driven. Each layer of the storage shelf can be provided with a tray or a clamping groove to prevent the culture object from falling when being taken out. The door assembly 20 is fixed to the opening side of the box body 10 by screws or buckles, or the door assembly 20 is integrated as a side of the box body 10. The taking and placing opening 111 is in communication with the accommodation space.

[0086] The partition sealing advantage of the door assembly 20 can greatly reduce the amount of CO2 escape and temperature fluctuation when the door is opened and closed, reduce the start-stop frequency of the temperature control module and the CO2 concentration control module, and thus reduce energy consumption. The rotatable storage shelf cooperates with the door assembly 20 to realize the automation process of storage shelf rotation positioning, target sliding door opening, automatic taking and placing, and sliding door closing, improve operation efficiency, and reduce the pollution risk caused by manual intervention. The multiple sealing design of the door assembly 20 can also block bacteria and dust in the external environment from entering the accommodation space, reduce the pollution probability of the culture object, and be suitable for biological experiment scenes such as cell culture and microorganism culture that have strict environmental requirements.

[0087] The above description and drawings fully illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments only represent possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations can be changed. Some parts and features of the embodiments can be included in or replace parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A door assembly adapted to a multi-layer shelving unit, characterized in that, include: The door frame forms multiple access points corresponding to multi-level shelves; The track assembly forms a sliding track with the door frame along the length of the pick-up and drop-off opening; The door unit includes multiple sliding doors, all of which are slidably connected to the sliding track, and the multiple sliding doors correspond to multi-layer shelves; The drive component is used to drive the sliding doors to move. When a storage object is taken out or placed from the shelf, the drive component drives the sliding door corresponding to the storage object to open, while the other sliding doors remain closed.

2. The door assembly according to claim 1, characterized in that, The sliding doors include an outer sliding door and an inner sliding door. When the retrieval opening is closed, the edge of the outer sliding door overlaps with the edge of the inner sliding door. When the retrieval opening is opened, the outer sliding door overlaps with the inner sliding door.

3. The door assembly according to claim 2, characterized in that, The inward-facing side of the outer sliding door and the outward-facing side of the inner sliding door form a sliding seal.

4. The door assembly according to claim 2, characterized in that, The door frame includes: The sealing plate has the aforementioned opening for taking out and putting in; The inner sliding door is slidably sealed to the sealing plate, and the outer sliding door is slidably sealed to the sealing plate.

5. The door assembly according to claim 4, characterized in that, The outer sliding door includes: Sliding door body; The first side plate is connected to one side of the sliding door body along the sliding direction of the sliding track; The second side plate is connected to the other side of the sliding door body along the sliding direction of the sliding track; Wherein, one side end face of the inner sliding door is slidably sealed with the first side plate, and the other side end face of the inner sliding door is slidably sealed with the second side plate.

6. The door assembly according to claim 5, characterized in that, The driving component includes: The first rack is disposed on one side of the pick-and-place opening along the sliding direction of the sliding track; An outer travel motor is connected to the outer sliding door; The outer gear is connected to the drive shaft of the outer travel motor and meshes with the first rack. When the outer travel motor rotates, it drives the outer sliding door to move in parallel.

7. The door assembly according to claim 6, characterized in that, The driving component also includes: The second rack is disposed on the other side of the pick-and-place opening along the sliding direction of the sliding track; An inner travel motor is connected to the inner sliding door; The inner gear is connected to the drive shaft of the inner walking motor and meshes with the second rack. When the inner walking motor rotates, it drives the inner sliding door to move in parallel.

8. The door assembly according to any one of claims 2 to 7, characterized in that, The track assembly includes two track strips located on both sides of the loading and unloading port. The inner sliding door contacts the sealing plate within the two track strips, while the outer sliding door contacts the sealing plate outside the two track strips. The inner sliding door is provided with a sealing element on the side that contacts the track, and / or the first side plate and the second side plate are provided with sealing blocks on the side facing the track.

9. The door assembly according to any one of claims 2 to 7, characterized in that, Includes at least two outer sliding doors, which are located on either side of an inner sliding door when the access port is closed; or, Includes at least two inner sliding doors, which are located on either side of an outer sliding door when the retrieval opening is closed; or, It includes multiple inner sliding doors and multiple outer sliding doors, which are alternately arranged when the retrieval port is closed.

10. An incubator, characterized in that, include: The box-shaped structure has a storage space. A multi-layered shelf is rotatably mounted in the accommodating space; and, The door assembly according to any one of claims 1 to 9 is disposed in the housing.

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