Microorganism workstation

Abstract

The utility model discloses a microorganism workstation which comprises an operation bin and a transfer bin, and further comprises a temperature and humidity control system, a sterilization system, a gas concentration control system and a waste gas exhaust system, and the temperature and humidity control system, the sterilization system, the gas concentration control system and the waste gas exhaust system are communicated with the operation bin and / or the transfer bin. The system is used for performing temperature and humidity control, sterilization, gas control and waste gas discharge on the operation bin and / or the transfer bin. According to the microorganism work station disclosed by the utility model, the internal environment of the microorganism work station is sterilized by utilizing the sterilization gas generated by the sterilization system, the sterilization system also recycles the sterilization gas, and meanwhile, the residual sterilization gas in the station is discharged by utilizing the waste gas discharge system; the sterilization gas in the station is exhausted as much as possible, so that the possible negative influence of the residual sterilization gas on the experiment is effectively avoided; and the gas concentration control system is used for relatively accurately controlling the gas environment in the station.

Description

Technical Field

[0001] This utility model relates to the field of microbial research, and in particular to a microbial workstation. Background Technology

[0002] A microbial workstation typically consists of two chambers: a transfer chamber and an operation chamber. The transfer chamber is used for transferring materials, while the operation chamber is used for manipulating microorganisms. To maintain a stable environment within the chamber, it is necessary to regulate the temperature, humidity, and gas concentration. These operations generate a large amount of waste gas, which existing microbial workstations cannot centrally treat. As a result, a large amount of waste gas diffuses directly into the environment surrounding the workstation, negatively impacting the microorganisms and / or the operators.

[0003] In addition, the internal environment of the microbial workstation needs to be sterilized. Existing microbial workstations usually use methods such as wiping with disinfectant or ultraviolet sterilization for sterilization. However, these sterilization methods cannot sterilize the air ducts. Incomplete sterilization may interfere with subsequent experiments and also pose a risk of contaminating the environment in which the workstation is located. At the same time, existing microbial workstations do not have effective protective measures in the event of a gas leak. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model discloses a microbial workstation.

[0005] A microbial workstation includes an operating chamber and a transfer chamber, and further includes a temperature and humidity control system, a sterilization system, a gas concentration control system, and an exhaust gas system. The temperature and humidity control system, sterilization system, gas concentration control system, and exhaust gas system are connected to the operating chamber and / or transfer chamber and are used to control the temperature and humidity, sterilize, control the gas, and exhaust the exhaust gas in the operating chamber and / or transfer chamber.

[0006] Preferably, the operating chamber includes a first chamber body, a first air inlet with an air inlet valve disposed on the first chamber body, and a first air duct disposed at least partially surrounding the first chamber body; the operating chamber is also provided with a first filtration system.

[0007] The transfer chamber includes a second chamber body, a second air inlet with an air inlet valve disposed on the second chamber body, and a second air duct disposed at least partially surrounding the second chamber body. The transfer chamber is also provided with a second filtration system.

[0008] Specifically, the operating chamber is equipped with a first air duct to facilitate gas circulation within the operating chamber, and the transfer chamber is equipped with a second air duct to facilitate gas circulation within the transfer chamber. The first and second filtration systems are used to filter the gas entering the operating chamber and transfer chamber, which can sterilize the gas on the one hand and allow the gas to form laminar flow within the chamber on the other hand, which is convenient for experiments.

[0009] Preferably, the first filtration system includes a first-stage filter and a first-second-stage filter disposed on both sides of the first air inlet, and the gas entering the operating chamber is filtered by the first-stage filter and the first-second-stage filter in sequence.

[0010] The second filtration system includes a second primary filter and a second secondary filter located on both sides of the second air inlet. The gas entering the transfer chamber is filtered by the second primary filter and the second secondary filter in sequence.

[0011] Specifically, the first / second stage filters are located outside the operating / transfer chamber, meaning that the gas is filtered before entering the operating / transfer chamber, effectively preventing impurities from entering the operating / transfer chamber; the first / second stage filters are located inside the operating / transfer chamber, filtering the gas again after it has been filtered by the first stage filter; the first / second stage filters can be pre-filters, and the first / second stage filters can be HEPA filters, or other filters that can achieve the purpose can be selected.

[0012] Preferably, the sterilization system includes a sterilization gas generator and a sterilization pipeline. The operating chamber and the transfer chamber are provided with several connection ports equipped with valves for connecting to the sterilization pipeline. A circulating fan is provided in both the operating chamber and the transfer chamber.

[0013] The circulating fan is used to ensure that the gas is evenly distributed in the operating chamber and the transfer chamber.

[0014] Specifically, using sterilizing gas to sterilize the operation / transfer chamber allows for comprehensive sterilization without structural limitations preventing incomplete sterilization. Furthermore, the removal of sterilizing gas after sterilization is very convenient, minimizing the impact of residual sterilizing substances on subsequent experiments. The circulating fan ensures uniform gas distribution within the chamber.

[0015] Preferably, the sterilization pipeline includes an air inlet pipeline and an air outlet pipeline, and the valve includes an air inlet valve connected to the air inlet pipeline and an air outlet valve connected to the air outlet pipeline, with the air inlet valve located near the circulating fan.

[0016] Specifically, the sterilizing gas enters the operation / transfer chamber through the inlet pipe and then returns to the sterilizing gas generator through the outlet pipe. The structure of placing the inlet valve close to the circulating fan is to ensure that the power provided by the circulating fan can smoothly allow the sterilizing gas to enter the operation / transfer chamber.

[0017] Preferably, the exhaust gas discharge system includes an exhaust gas outlet with an exhaust gas discharge valve, an exhaust fan, and an exhaust pipe connecting the exhaust gas discharge valve and the exhaust fan;

[0018] Both the operating compartment and the transfer compartment are equipped with exhaust gas outlets.

[0019] Specifically, sterilizing gas is discharged from the operation / transfer chamber through the exhaust pipe, but there will always be residual sterilizing gas in the operation / transfer chamber. Therefore, an exhaust gas discharge system needs to be set up to remove the residual sterilizing gas. The exhaust fan is used to discharge the gas remaining in the operation / transfer chamber through the exhaust valve and exhaust pipe. It should be noted that during the process of removing residual gas, the first / second air inlet needs to be opened to replenish the gas in the chamber.

[0020] In addition, when a gas leak occurs in the operating chamber and / or transfer chamber, if it is necessary to maintain a negative pressure environment inside the chamber, the exhaust valve and exhaust fan should be opened while the first air inlet and / or the second air inlet are closed. This allows the gas inside the chamber to be discharged through the exhaust outlet under the action of the exhaust fan, thereby maintaining a negative pressure environment inside the chamber.

[0021] When a gas leak occurs in the operating chamber and / or transfer chamber, if it is necessary to maintain a positive pressure environment inside the chamber, the first air inlet and / or the second air inlet should be opened while the exhaust valve and exhaust fan are closed, so that external gas can enter the operating chamber and / or transfer chamber from the first air inlet and / or the second air inlet to maintain a positive pressure environment inside the chamber.

[0022] Preferably, the gas concentration control system includes a negative pressure control system and a positive pressure control system.

[0023] When the operating chamber and / or transfer chamber are in a negative pressure environment, the negative pressure control system is used to control the gas concentration in the operating chamber and / or transfer chamber.

[0024] When the operating chamber and / or transfer chamber are in a positive pressure environment, the positive pressure control system is used to control the gas concentration in the operating chamber and / or transfer chamber.

[0025] Specifically, when the operating / transfer chamber is in a negative pressure environment, that is, when the air pressure inside the chamber is lower than the external air pressure, additional power is required to make the gas inside the chamber flow. When the operating / transfer chamber is in a positive pressure environment, that is, when the air pressure inside the chamber is higher than the external air pressure, no additional power is required, and the gas inside the chamber will flow as long as it is kept unobstructed. Therefore, it is appropriate to set up a negative pressure control system and a positive pressure control system respectively based on the relationship between the air pressure inside the chamber and the external air pressure.

[0026] Preferably, the negative pressure control system includes a vacuum pump, which is connected to the operating chamber and the transfer chamber through a negative pressure control pipeline. The negative pressure control pipeline is equipped with a first solenoid valve for controlling the connection between the operating chamber and the vacuum pump, a second solenoid valve for controlling the connection between the transfer chamber and the vacuum pump, and a third solenoid valve for controlling the connection between the operating chamber, the transfer chamber and the vacuum pump.

[0027] The positive pressure control system includes a positive pressure control gas pipeline and a fourth solenoid valve.

[0028] Specifically, the negative pressure system uses a vacuum pump to power the flow of gas (including inflow and outflow); when both the first and third solenoid valves are open, the operating chamber is connected to the vacuum pump, and when both the second and third solenoid valves are open, the transfer chamber is connected to the vacuum pump; since solenoid valves have the advantages of fast response and easy control, the gas concentration control system uses solenoid valves to control the connection status. At the same time, the solenoid valve has a small diameter, which leads to a small diameter of the gas control pipeline, thus allowing for more precise control of the gas concentration in the operating / transfer chamber.

[0029] Furthermore, when controlling the gas concentration in the operating chamber and / or transfer chamber, it is necessary to replenish a specified gas (e.g., nitrogen). Therefore, the operating chamber and / or transfer chamber are connected to the specified gas via valves, and these valves are used only for connecting to the specified gas. Preferably, a third filter is also included, through which the gas concentration control system is connected to the operating chamber and transfer chamber.

[0030] Specifically, during experiments conducted in a microbiology workstation, there may be some bacteria necessary for the experiment inside the chamber. The purpose of setting up a third filter is to keep these bacteria inside the chamber.

[0031] Preferably, it also includes a waste gas treatment device, wherein both the waste gas discharge system and the gas concentration control system are connected to the waste gas treatment device;

[0032] It also includes a gas concentration detection device, which is installed in both the operation chamber and the transfer chamber.

[0033] Specifically, centralized treatment of waste gas can prevent harmful substances from escaping into the working environment of operators and can also effectively recycle and reuse waste gas.

[0034] To ensure a more intuitive and accurate understanding of the gas concentration within the operating / transfer chamber, a gas concentration detection device is typically installed inside the operating / transfer chamber.

[0035] Compared with the prior art, the advantages of this utility model are:

[0036] The sterilization system uses sterilizing gases generated by the sterilization system to sterilize the internal environment of the microbial workstation. The sterilization system also recovers the sterilizing gases and uses an exhaust system to remove residual sterilizing gases from the workstation, so as to remove as much sterilizing gas as possible and effectively prevent the negative impact of residual sterilizing gases on the experiment. The gas concentration control system is used to control the gas environment in the workstation relatively precisely. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the microbial workstation disclosed in this utility model. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] like Figure 1 As shown, a microbial workstation includes an operating chamber 10 and a transfer chamber 20, and also includes a temperature and humidity control system, a sterilization system, a gas concentration control system, and an exhaust gas discharge system. The temperature and humidity control system, sterilization system, gas concentration control system, and exhaust gas discharge system are connected to the operating chamber 10 and / or the transfer chamber 20 for sterilizing the operating chamber 10 and / or the transfer chamber 20, controlling the gas, and discharging exhaust gas.

[0040] The operating chamber 10 includes a first chamber body, a first air inlet 12 with an air inlet valve disposed on the first chamber body, and a first air duct 11 disposed at least partially around the first chamber body. The operating chamber 10 is also provided with a first filtration system.

[0041] The transfer chamber 20 includes a second chamber body, a second air inlet 22 with an air inlet valve disposed on the second chamber body, and a second air duct 21 disposed at least partially around the second chamber body. The transfer chamber 20 is also provided with a second filtration system.

[0042] The operating chamber 10 is equipped with a first air duct 11 to facilitate gas circulation within the operating chamber 10, and the transfer chamber 20 is equipped with a second air duct 21 to facilitate gas circulation within the transfer chamber 20. The first and second filtration systems are used to filter the gas entering the operating chamber 10 and the transfer chamber 20. On the one hand, the gas can be sterilized, and on the other hand, the gas can form a laminar flow within the chamber, which is convenient for experiments.

[0043] The first filtration system includes a first primary filter 31 and a first secondary filter 32 respectively disposed on both sides of the first air inlet 12. The gas entering the operating chamber 10 is filtered by the first primary filter 31 and the first secondary filter 32 in sequence.

[0044] The second filtration system includes a second primary filter 33 and a second secondary filter 34 located on both sides of the second air inlet 22. The gas entering the transfer chamber 20 is filtered by the second primary filter 33 and the second secondary filter 34 in sequence.

[0045] The first / secondary stage filters 31 / 33 are located outside the operating / transfer chamber 10 / 20, meaning that the gas is filtered before entering the operating / transfer chamber 10 / 20, effectively preventing impurities from entering the operating / transfer chamber 10 / 20; the first / secondary stage filters 32 / 34 are located inside the operating / transfer chamber 10 / 20, and filter the gas filtered by the first stage filters again; the first / secondary stage filters 31 / 33 can be pre-filters, and the first / secondary stage filters 32 / 34 can be HEPA filters, or other filters that can achieve the purpose can be selected.

[0046] The sterilization system includes a sterilization gas generator 41 and a sterilization pipeline. The operating chamber 10 and the transfer chamber 20 are provided with several connection ports equipped with valves for connecting to the sterilization pipeline. Both the operating chamber 10 and the transfer chamber 20 are equipped with circulating fans 42.

[0047] The circulating fan 42 makes the gas distribution more even in the operating chamber 10 and the transfer chamber 20.

[0048] Using sterilizing gas to sterilize the operation / transfer chamber 10 / 20 can ensure comprehensive sterilization within the chamber, preventing incomplete sterilization due to structural limitations. Furthermore, the exhaust of sterilizing gas after sterilization is very convenient, minimizing the impact of residual sterilizing substances on subsequent experiments. The circulating fan 42 ensures uniform gas distribution within the chamber.

[0049] The sterilization pipeline includes an air inlet pipeline and an air outlet pipeline. The valves include an air inlet valve 43 connected to the air inlet pipeline and an air outlet valve 44 connected to the air outlet pipeline. The air inlet valve 43 is located near the circulating fan 42.

[0050] The sterilizing gas enters the operation / transfer chamber 10 / 20 through the inlet pipe, and then returns to the sterilizing gas generator 41 through the outlet pipe. The structure of placing the inlet valve 43 close to the circulating fan 42 is to ensure that the power provided by the circulating fan 42 can smoothly allow the sterilizing gas to enter the operation / transfer chamber 10 / 20.

[0051] The exhaust gas discharge system includes an exhaust gas outlet with an exhaust gas discharge valve 51, an exhaust fan 52, and an exhaust pipe connecting the exhaust gas discharge valve 51 and the exhaust fan 52.

[0052] Both the operating chamber 10 and the transfer chamber 20 are equipped with exhaust gas outlets.

[0053] The sterilization gas is discharged from the operation / transfer chamber 10 / 20 through the exhaust pipe. However, sterilization gas will always remain in the operation / transfer chamber 10 / 20. Therefore, an exhaust gas discharge system is required to remove the residual sterilization gas. The exhaust fan 52 is used to discharge the gas remaining in the operation / transfer chamber 10 / 20 through the exhaust valve 51 and the exhaust pipe. It should be noted that during the process of removing the residual gas, the first / second air inlet 12 / 22 needs to be opened to replenish the gas in the chamber.

[0054] In addition, when a gas leak occurs in the operating chamber 10 and / or the transfer chamber 20, if it is necessary to maintain a negative pressure environment inside the chamber, the exhaust valve 51 and the exhaust fan 52 should be opened while the first air inlet 12 and / or the second air inlet 22 are closed, so that the gas inside the chamber is discharged through the exhaust outlet under the action of the exhaust fan 52, thereby maintaining the negative pressure environment inside the chamber.

[0055] When a gas leak occurs in the operating chamber 10 and / or the transfer chamber 20, if it is necessary to maintain a positive pressure environment inside the chamber, the first air inlet 12 and / or the second air inlet 22 should be opened while the exhaust valve 51 and the exhaust fan 52 are closed, so that external gas can enter the operating chamber 10 and / or the transfer chamber 20 from the first air inlet 12 and / or the second air inlet 22 to maintain a positive pressure environment inside the chamber.

[0056] The gas concentration control system includes a negative pressure control system and a positive pressure control system.

[0057] When the operating chamber 10 and / or the transfer chamber 20 are in a negative pressure environment, the gas concentration in the operating chamber 10 and / or the transfer chamber 20 is controlled by the negative pressure control system.

[0058] When the operating chamber 10 and / or the transfer chamber 20 are in a positive pressure environment, the gas concentration in the operating chamber 10 and / or the transfer chamber 20 is controlled by a positive pressure control system.

[0059] When the operating / transfer chamber 10 / 20 is in a negative pressure environment, that is, when the air pressure inside the chamber is lower than the external air pressure, additional power is required to make the gas inside the chamber flow. When the operating / transfer chamber 10 / 20 is in a positive pressure environment, that is, when the air pressure inside the chamber is higher than the external air pressure, no additional power is required, and the gas inside the chamber will flow as long as it is kept unobstructed. Therefore, it is appropriate to set up a negative pressure control system and a positive pressure control system respectively according to the relationship between the air pressure inside the chamber and the external air pressure.

[0060] The negative pressure control system includes a vacuum pump 61, which is connected to the operating chamber 10 and the transfer chamber 20 through a negative pressure control pipeline. The negative pressure control pipeline is equipped with a first solenoid valve 62 for controlling the connection between the operating chamber 10 and the vacuum pump 61, a second solenoid valve 63 for controlling the connection between the transfer chamber 20 and the vacuum pump 61, and a third solenoid valve 64 for controlling the connection between the operating chamber 10, the transfer chamber 20 and the vacuum pump 61.

[0061] The positive pressure control system includes a positive pressure control gas pipeline and a fourth solenoid valve 65.

[0062] The negative pressure system uses vacuum pump 61 to provide power for the flow of gas (including inflow and outflow). When both the first solenoid valve 62 and the third solenoid valve 64 are open, the operating chamber 10 is connected to vacuum pump 61. When both the second solenoid valve 63 and the third solenoid valve 64 are open, the transfer chamber 20 is connected to vacuum pump 61. Since solenoid valves have the advantages of fast response and easy control, the gas concentration control system uses solenoid valves to control the connection status. At the same time, the solenoid valve has a small diameter, which leads to a small diameter of the gas control pipeline. Therefore, the gas concentration in the operating / transfer chambers 10 / 20 can be controlled more precisely.

[0063] In addition, when controlling the gas concentration in the operating chamber 10 and / or the transfer chamber 20, it is necessary to replenish a specified gas (such as nitrogen). Therefore, the operating chamber 10 and / or the transfer chamber 20 will be connected to the specified gas through a valve, and the valve is only used to connect to the specified gas.

[0064] It also includes a third filter 71, through which the gas concentration control system is connected to the operating chamber 10 and the transfer chamber 20.

[0065] During experiments conducted in the microbial workstation, there may be some bacteria necessary for the experiment in the chamber. The purpose of setting up the third filter 71 is to keep these bacteria in the chamber.

[0066] It also includes a waste gas treatment device 72, and the waste gas discharge system and the gas concentration control system are both connected to the waste gas treatment device 72;

[0067] It also includes a gas concentration detection device 80, which is installed in both the operation chamber 10 and the transfer chamber 20.

[0068] Centralized treatment of waste gas can prevent harmful substances from escaping into the working environment of operators and can also effectively recycle and reuse waste gas.

[0069] To ensure a more intuitive and accurate understanding of the gas concentration within the operation / transfer chamber 10 / 20, a gas concentration detection device 80 is typically installed within the operation / transfer chamber 10 / 20.

Claims

1. A microbial workstation, comprising an operating chamber and a transfer chamber, characterized in that, It also includes a temperature and humidity control system, a sterilization system, a gas concentration control system, and an exhaust gas system. The temperature and humidity control system, sterilization system, gas concentration control system, and exhaust gas system are connected to the operating chamber and / or transfer chamber and are used to control the temperature and humidity, sterilize, control the gas, and exhaust the exhaust gas of the operating chamber and / or transfer chamber.

2. The microbial workstation according to claim 1, characterized in that, The operating chamber includes a first chamber body, a first air inlet with an air inlet valve disposed on the first chamber body, and a first air duct disposed around the first chamber body. The operating chamber is also provided with a first filtration system. The transfer chamber includes a second chamber body, a second air inlet with an air inlet valve disposed on the second chamber body, and a second air duct disposed around the second chamber body. The transfer chamber is also provided with a second filtration system.

3. The microbial workstation according to claim 2, characterized in that, The first filtration system includes a first-stage filter and a first-second-stage filter located on both sides of the first air inlet. The gas entering the operating chamber is filtered by the first-stage filter and the first-second-stage filter in sequence. The second filtration system includes a second primary filter and a second secondary filter located on both sides of the second air inlet. The gas entering the transfer chamber is filtered by the second primary filter and the second secondary filter in sequence.

4. The microbial workstation according to claim 1, characterized in that, The sterilization system includes a sterilization gas generator and a sterilization pipeline. The operating chamber and the transfer chamber are provided with several connection ports equipped with valves for connecting to the sterilization pipeline. A circulating fan is installed in both the operating chamber and the transfer chamber. The circulating fan is used to ensure that the gas is evenly distributed in the operating chamber and the transfer chamber.

5. The microbial workstation according to claim 4, characterized in that, The sterilization pipeline includes an air inlet pipeline and an air outlet pipeline, and the valve includes an air inlet valve connected to the air inlet pipeline and an air outlet valve connected to the air outlet pipeline. The air inlet valve is located near the circulating fan.

6. The microbial workstation according to claim 1, characterized in that, The exhaust gas discharge system includes an exhaust gas outlet with an exhaust gas discharge valve, an exhaust fan, and an exhaust pipe connecting the exhaust gas discharge valve and the exhaust fan. Both the operating compartment and the transfer compartment are equipped with exhaust gas outlets.

7. The microbial workstation according to claim 1, characterized in that, The gas concentration control system includes a negative pressure control system and a positive pressure control system. When the operating chamber and / or transfer chamber are in a negative pressure environment, the negative pressure control system is used to control the gas concentration in the operating chamber and / or transfer chamber. When the operating chamber and / or transfer chamber are in a positive pressure environment, the positive pressure control system is used to control the gas concentration in the operating chamber and / or transfer chamber.

8. The microbial workstation according to claim 7, characterized in that, The negative pressure control system includes a vacuum pump, which is connected to the operating chamber and the transfer chamber through a negative pressure control pipeline. The negative pressure control pipeline is equipped with a first solenoid valve for controlling the connection between the operating chamber and the vacuum pump, a second solenoid valve for controlling the connection between the transfer chamber and the vacuum pump, and a third solenoid valve for controlling the connection between the operating chamber, the transfer chamber and the vacuum pump. The positive pressure control system includes a positive pressure control gas pipeline and a fourth solenoid valve.

9. The microbial workstation according to claim 7, characterized in that, It also includes a third filter, through which the gas concentration control system is connected to the operating chamber and the transfer chamber.

10. The microbial workstation according to claim 1, characterized in that, It also includes a waste gas treatment device, and the waste gas discharge system and the gas concentration control system are both connected to the waste gas treatment device; It also includes a gas concentration detection device, which is installed in both the operation chamber and the transfer chamber.

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