CN221141743U

CN221141743U - Anaerobic or hypoxic workstation

Info

Publication number: CN221141743U
Application number: CN202322921819.9U
Authority: CN
Inventors: 章琦; 石国忠; 刘少鸽; 潘浩; 罗畅
Original assignee: Shanghai Panmai Technology Co ltd
Current assignee: Shanghai Panmai Technology Co ltd
Priority date: 2023-10-30
Filing date: 2023-10-30
Publication date: 2024-06-14
Anticipated expiration: 2033-10-30

Abstract

The embodiment of the application relates to the technical field of biological culture equipment, in particular to an anaerobic or low-oxygen workstation. The anaerobic or hypoxia workstation comprises a box body, wherein a first area in the box body is provided with a working inner cavity, a gas channel is arranged in the working inner cavity, and a second area in the box body is provided with a branch chamber; a convection fan is arranged in the gas channel and is used for generating circulating gas flow in the gas channel; the branch chamber is internally provided with a fan and a filter, an air inlet of the fan is communicated with the gas channel, and the filter is positioned at one side of an air outlet of the fan and is communicated with the gas channel and is used for enabling gas in the fan to return to the gas channel after being filtered. The anaerobic or low-oxygen workstation provided by the embodiment of the application can realize continuous purification of the gas in the cavity so as to reach and stabilize the cleanliness level in the cavity and ensure the cleanliness in the cavity.

Description

Anaerobic or hypoxic workstation

Technical Field

The embodiment of the application relates to the technical field of biological culture equipment, in particular to an anaerobic or low-oxygen workstation.

Background

Since the microbial cells or spores are easily attached to the aerosol particles and spread in the gas, the aerosol particles carrying the microbial cells or spores are easily grown and propagated in the nutrient-rich medium, thereby generating biological pollution to the sample. The biological pollution can destroy the purification system of the microorganism sample and can change the metabolism and the composition of the microorganism sample. In addition, biological contamination in somatic cell samples can also lead to serious deviations in cell life phenomena, even in somatic cell death. Thus, when using anaerobic or hypoxic stations for biological cultivation, it is necessary to ensure cleanliness of the lumen.

Disclosure of utility model

The application aims to provide an anaerobic or low-oxygen workstation which can realize continuous purification of inner cavity gas so as to reach and stabilize the cleanliness level of an inner cavity and ensure the cleanliness of the inner cavity.

In order to solve the technical problems, the embodiment of the application provides an anaerobic or low-oxygen workstation, which comprises a box body, wherein a first area in the box body is provided with a working inner cavity, a gas channel is arranged in the working inner cavity, and a second area in the box body is provided with a branch chamber; a convection fan is arranged in the gas channel and is used for generating circulating gas flow in the gas channel; the branch chamber is internally provided with a fan and a filter, an air inlet of the fan is communicated with the gas channel, and the filter is positioned at one side of an air outlet of the fan and is communicated with the gas channel and is used for enabling gas in the fan to return to the gas channel after being filtered.

The anaerobic or low-oxygen workstation provided by the embodiment of the application adopts a double-directional air passage system aiming at the problem that the common anaerobic or low-oxygen workstation has poor purifying effect on the gas in the cavity. The chamber gas is formed into a unidirectional flow of gas circulating along the directional gas passage by a convection fan in the directional gas passage. An independent circulating air flow filtering structure is established in the other directional air passage, so that the air in the directional air passage is driven by a fan, filtered by a filter under the action of air pressure difference, and the filtered and purified air is discharged into the directional air passage with circulating air flow. Continuous purification of the gas in the cavity is realized through uninterrupted circulation, so that the cleanliness level in the cavity is reached and stabilized, and the cleanliness in the cavity is ensured.

In some embodiments, a separation plate is arranged in the branch chamber, and the fan and the filter are arranged on two sides of the separation plate.

In some embodiments, a first sealing ring is arranged between the air outlet of the fan and the partition plate.

In some embodiments, the perimeter of the filter is provided with a second seal ring.

In some embodiments, a top plate is arranged in the box body, two sides of the top plate are respectively provided with a working chamber and a branch chamber, and the fan is arranged on the top plate through a damping gasket.

In some embodiments, a portion of the edge of the top panel is spaced from the cavity wall of the tank.

In some embodiments, the chamber wall of the housing is provided with an operating aperture, the operating aperture being disposed remotely from the gas passage.

In some embodiments, the filter is a ULPA filter.

In some embodiments, the anaerobic or hypoxic workstation further comprises a voice control device electrically connected to the convection fans, respectively.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

FIG. 1 is a schematic diagram of an anaerobic or hypoxic workstation according to some embodiments of the application;

FIG. 2 is a schematic perspective view of an anaerobic or hypoxic workstation according to some embodiments of the application;

FIG. 3 is a schematic illustration of the filtration of ULPA filters in an anaerobic or hypoxic workstation provided by some embodiments of the present application;

FIG. 4 is a schematic diagram of a mating structure at the exhaust of a fan in an anaerobic or hypoxia workstation according to some embodiments of the present application;

FIG. 5 is a schematic illustration of the mounting structure of a blower in an anaerobic or hypoxic workstation according to some embodiments of the application;

FIG. 6 is a control flow diagram of an anaerobic or hypoxic workstation provided in some embodiments of the application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of the embodiments of the present application will be given with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present application, numerous technical details have been set forth in order to provide a better understanding of the present application. The claimed application may be practiced without these specific details and with various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not be construed as limiting the specific implementation of the present application, and the embodiments can be mutually combined and referred to without contradiction.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

When the anaerobic or hypoxia workstation is used for culturing, the air tightness of the working inner cavity needs to be ensured so as to avoid biological pollution, thereby influencing experimental data and research results. However, common anaerobic or hypoxic workstations do not have good purification of the gases in the working chamber, resulting in the risk of biological contamination.

To this end, some embodiments of the application provide an anaerobic or hypoxic workstation. A dual directional air passage system is built in an anaerobic or low-oxygen workstation, and the air in the cavity forms unidirectional air flow circularly flowing along the directional air passage through a convection fan in the directional air passage. An independent circulating air flow filtering structure is established in the other directional air passage, so that the air in the directional air passage is driven by a fan, filtered by a filter under the action of air pressure difference, and the filtered and purified air is discharged into the directional air passage with circulating air flow. Continuous purification of the gas in the cavity is realized through uninterrupted circulation, so that the cleanliness level in the cavity is reached and stabilized, and the cleanliness in the cavity is ensured.

The structure of an anaerobic or hypoxic workstation according to some embodiments of the application is described below with reference to fig. 1-6.

As shown in fig. 1 to 2, the anaerobic or hypoxia workstation provided in some embodiments of the present application includes a box 11, a first area in the box 11 is provided with a working inner cavity 12, a gas channel 14 is provided in the working inner cavity 12, and a second area in the box 11 is provided with a branch chamber; a convection fan 16 is arranged in the gas channel 14, and the convection fan 16 is used for generating circulating gas flow in the gas channel 14; the branch chamber is internally provided with a fan 17 and a filter 18, an air inlet 19 of the fan 17 is communicated with the gas channel 14, the filter 18 is positioned at one side of an air outlet 20 of the fan 17 and is communicated with the gas channel 14, and the filter is used for filtering the gas in the fan 17 and returning the gas to the gas channel 14.

The gas passage 14 in the working chamber 12 may form a closed gas circulation system within the anaerobic or hypoxic station, such that the gas in the working chamber 12 is driven by the convection fan 16 to form a unidirectional flow of gas that circulates along the gas passage 14.

In addition, the branching chamber may be divided into a first chamber 13 and a second chamber 15, the blower 17 being set up in the first chamber 13 and a separate filter structure being set up in the second chamber 15. Part of the gas in the working chamber 12 is sucked into the fan 17 from the air inlet 19 of the fan 17, and other gases continue to flow unidirectionally along the gas channel 14. Under the action of the air pressure difference, the air is discharged from the air outlet 20 of the fan 17 and filtered by the filter 18, and the filtered air is discharged into the air channel 14 of the working inner cavity 12, and the continuous purification of the air in the cavity is realized through uninterrupted circulation, so as to achieve and stabilize the cleanliness in the cavity. The cleanliness can reach ISOClass levels. In fig. 1, arrows are taken as a schematic representation of the actual situation, and the circulation flow of the gas in the working chamber 12 in the gas channel 14 and the flow of the gas after the filtration in the second chamber 15 back to the gas channel 14 are illustrated.

In practice, the filter 18 includes a HEPA filter and a ULPA filter. Among them, the HEPA filter has a certain lumen purifying ability, but has the following drawbacks:

1. HEPA filters have relatively low filter particle sizes, and can only filter particles above 0.3 μm (micrometers), and can only retain larger aerosol particles in the gas. The cleaning capability is completely absent for small particles smaller than 0.3 mu m such as mycoplasma, so that the risk of the inner cavity pollution of the anaerobic or hypoxia workstation is still high.

2. HEPA filters have relatively low filtration efficiency, which allows extremely high diffusion of mold spores with high escape rates. For microbial or cellular experiments, where no resistance conditions can be added, there is a greater risk of contamination, which has a greater impact on the safety of the sample and the reliability of the experimental data.

3. The internal chambers of anaerobic or hypoxic workstations equipped with HEPA filters often increase the frequency of HEPA filter replacement due to mold contamination, increasing the number of thorough disinfection treatments of the whole chamber. These operations increase the number of experimental interruptions and also increase the cost investment.

4. Anaerobic or low-oxygen workstations using HEPA filters often produce refractory contamination, leading to advanced elimination of anaerobic or low-oxygen workstation equipment, greatly increasing research costs.

Thus, in actual practice, filter 18 may be a ULPA filter. The ULPA filter is a porous network structure with fiber interweaving and pore diameter of about 0.1-0.2 mu m. As shown in fig. 3, aerosol particles 181 having a particle size of greater than 0.2 μm cannot pass through the mesh and are intercepted and filtered. The tiny particles with the diameter of 0.1-0.2 mu m in the air flow do irregular Brownian motion, and collide with the obstacle to be retained by the hook and filtered. Under the action of the air pressure difference, the air passes through the ULPA ultra-efficient filter to filter aerosol particles 181 in the air, the purified air returns to the air channel 14 of the working chamber 12 to continue to circulate unidirectionally, and finally the uninterrupted purification of the air in the cavity is realized.

The ULPA filter is disposed within the second chamber 15 of the housing 11. The gas discharged through the blower 17 forms a positive pressure in the second chamber 15, that is, the gas pressure in the second chamber 15 is greater than the gas pressure in the gas passage 14, so that the gas in the second chamber 15 flows to the filter 18 to block the large particle size particles 182, the small particle size particles 183, and the like in the second chamber 15 from entering the gas passage 14 to cause pollution.

In some embodiments, a partition plate 21 may be provided in the branch chamber, and the blower 17 and the filter 18 are provided on both sides of the partition plate 21.

That is, the branching chamber is divided into a first chamber 13 and a second chamber 15, which are partitioned by providing one partition plate 21. The blower 17 and the filter 18 are respectively located at both sides of the partition plate 21, and a high-pressure chamber before filtration can be formed at the side where the filter 18 is located. After the air is sucked by the fan 17, the air is discharged through the air outlet 20, the partition plate is provided with a through hole 211, and the air enters the other side of the partition plate 21 through the partition plate through hole 211. The gas discharged through the blower 17 passes through the filter 18 by the difference in air pressure, and then enters the gas passage 14. In this way, filtration and pressurization of the gas can be effectively achieved, ensuring that the filtered gas enters the gas passage 14 at a suitable pressure.

As shown in fig. 4, in some embodiments, a first sealing ring 22 may be provided between the exhaust outlet 20 of the blower 17 and the partition plate 21.

The first sealing ring 22 can enable the sealing between the air outlet 20 of the fan 17 and the partition plate 21 to be tighter, so that air leakage is avoided, normal operation of equipment is affected, and the stability of the operation of the equipment is improved.

Additionally, in some embodiments, the periphery of the filter 18 may be provided with a second seal ring.

By providing the second seal ring, the unfiltered gas or aerosol particles 181 can be prevented from leaking from the installation gap of the filter 18, thereby affecting the filtering effect.

As shown in fig. 1, 2 and 5, in some embodiments, a top plate 24 may be disposed in the box 11, where two sides of the top plate 24 are a working cavity 12 and a branch cavity, and the fan 17 is mounted on the top plate 24 through a damping pad 25.

The division plate 21 divides the branch chamber into a first chamber 13 and a second chamber 15, the fan 17 is located in the first chamber 13, and the fan 17 can be fixed by using a fixing device 171, and a damping gasket 25 is clamped between the fan 17 and the top plate 24 to damp vibration generated by the fan 17.

Additionally, in some embodiments, a portion of the edge of the top plate 24 may be spaced apart from the cavity wall of the working cavity 12.

By spacing a portion of the edge of the top plate 24 from the wall of the working chamber 12, the air inlet 19 of the blower 17 can be placed in communication with the air passage 14 in the working chamber 12. Part of the gas enters the first chamber 13 from the gas channel 14 of the working chamber 12, is sucked by the fan 17 and then enters the filter 18 of the second chamber 15 for filtering.

As shown in fig. 1, for convenience of operation by a worker, the chamber wall of the housing 11 may be provided with an operation hole 26, and the operation hole 26 may be provided away from the gas passage 14.

By providing the operation hole 26 in a region distant from the gas passage 14, the gas passage 14 can be prevented from interfering with the operation of the worker through the operation hole 26.

In addition, the anaerobic or hypoxic station can also comprise voice control means, electrically connected to the convection fan 16 and the blower 17, respectively.

As shown in fig. 6, the voice control device may allow an experimenter to manipulate the operation of the convection fan 16 and the fan 17 through voice commands. The user may use a voice control to turn the convection fan 16 and the fan 17 on or off, or adjust the wind speed, or perform other related operations to meet specific needs. By using voice control, the user does not need to directly contact the control buttons or surfaces of the device, thereby reducing the risk of the lumen being contaminated from outside. This is particularly important for users using the device in special environments or applications where a high degree of cleanliness is required. Therefore, the voice control device not only provides convenience for operation, but also enhances sanitation and pollution control of the equipment, and ensures reliability and practicability of the equipment in various applications.

Some embodiments of the present application may achieve the following objectives by constructing a ULPA ultra-efficient filtration system in an anaerobic or hypoxic workstation:

1. The effective interception of 99.99995% can be implemented on fine particles with the diameter of 0.12 mu m in the gas in the cavity of the anaerobic or low-oxygen workstation, the cleanliness in the cavity can be improved from ISOClass to ISOClass 3, and the problem of bacterial pollution in the cavity of the anaerobic or low-oxygen workstation is comprehensively solved;

2. The purification function of the laboratory refractory biological pollution mainly aiming at the high escape rate of mould spores can be realized, and the problem of refractory biological pollution of the inner cavity of an anaerobic or low-oxygen workstation is comprehensively solved;

3. the replacement and maintenance period of the filter equipment can be prolonged, and the investment of experimental maintenance cost is reduced.

In practical cases, the ULPA ultra-efficient filtration system may be constructed as follows:

1. Constructing a directional air passage structure in a box body of an anaerobic or low-oxygen workstation;

2. installing a convection fan in the directional air passage structure and electrically connecting the convection fan;

3. A filtering circulation structure is constructed at the top of a box body of an anaerobic or low-oxygen workstation, and an airtight pre-filtering high-pressure chamber is arranged;

4. Installing a fan at the inlet side of the pre-filtering high-pressure chamber, additionally installing a sealing ring at the exhaust port of the fan for sealing treatment, and additionally installing a thickened shock absorption gasket on a fixer of the fan;

5. The fan circuit is connected with a main controller, and the main controller is connected with a computer and is in communication butt joint with artificial intelligent control software;

6. The computer is provided with a voice receiver, and the voice signal is converted into a digital signal to be input into artificial intelligence control software. Identifying voice keywords through artificial intelligent control software, sending control instructions according to the identified voice information, and controlling the ultra-efficient filtering system through a main controller; the artificial intelligent control software has a voice resolution mode, and can actively learn the differences of voiceprints, voices, intonation, speech speeds and dialects of operators under the mode, automatically establish a voice recognition model and incorporate the routine operation links.

Finally, the anaerobic or low-oxygen workstation can be assembled according to the assembly flow, the air tightness installation is carried out according to the requirements of the process drawing, the electric connection is carried out, the artificial intelligent control software is connected with the main control, and the communication state is tested. Artificial intelligence learns and trains the voice instructions of the operator.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of carrying out the application and that various changes in form and details may be made therein without departing from the spirit and scope of the application.

Claims

1. An anaerobic or hypoxic workstation, comprising:

the box body, a first area in the box body is provided with a working inner cavity, a gas channel is arranged in the working inner cavity, and a second area in the box body is provided with a branch chamber;

a convection fan is arranged in the gas channel and is used for generating circulating airflow in the gas channel;

The air inlet of the fan is communicated with the air channel, and the filter is positioned at one side of the air outlet of the fan and is communicated with the air channel and used for enabling air in the fan to return to the air channel after being filtered.

2. An anaerobic or hypoxic workstation according to claim 1, wherein a dividing plate is provided in the branching chamber, the fans and the filters being provided on either side of the dividing plate.

3. An anaerobic or hypoxia workstation according to claim 2 wherein a first sealing ring is provided between the air outlet of the blower and the divider plate.

4. An anaerobic or hypoxic workstation according to claim 1, wherein the periphery of the filter is provided with a second sealing ring.

5. An anaerobic or hypoxia workstation according to claim 1, wherein a top plate is provided in the tank, the working cavity and the branching chamber are provided on both sides of the top plate, and the fan is mounted on the top plate via a damping pad.

6. An anaerobic or hypoxic workstation according to claim 5, wherein a portion of the edge of the roof is spaced from the chamber wall of the tank.

7. An anaerobic or hypoxic workstation according to claim 1, wherein the chamber wall of the tank is provided with an operating aperture, which is located remotely from the gas passage.

8. An anaerobic or hypoxic workstation according to claim 1, wherein said filter is a ULPA filter.

9. An anaerobic or hypoxic workstation according to claim 1, further comprising voice control means electrically connected to the convection fan and the blower, respectively.