Ventilation device of anaerobic workstation

Abstract

The utility model provides a ventilation device of an anaerobic workstation, which comprises a gas inlet pipeline arranged at the bottom of one side in a box body, a gas exhaust pipeline arranged at the top of the other opposite side in the box body, and a gas exhaust centrifugal fan arranged above the gas exhaust pipeline, the gas inlet pipeline is provided with a plurality of gas outlets in a gas hole shape, the gas exhaust pipeline is provided with a plurality of gas exhaust ports in a gas hole shape, and when the anaerobic work station exchanges gas, gas in a mixed gas source can enter the box body through the gas outlets of the gas inlet pipeline. Original gas in the box body can be sucked into the fan by the exhaust centrifugal fan through the exhaust port of the exhaust pipeline and the exhaust air door, and then is exhausted out of the box body. Thus, through the air holes distributed in the upper and lower opposite sides in the box body, high-pressure injection and negative anaerobic extraction, the added high-pressure gas uniformly pushes the air in the original box body to be discharged from the exhaust port, and the high-oxygen-content gas in the original box body can be efficiently exchanged, so that the air exchange time is effectively shortened, and the air consumption is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of microbial experiments, in particular to an air exchange device of an anaerobic workstation. BACKGROUND

[0002] The anaerobic workstation is a commonly used device in microbial experiments, and is mainly used for culturing and researching microorganisms in an anaerobic environment. The current anaerobic workstation mainly adopts a single inlet and a single outlet to realize air exchange. However, the anaerobic workstation needs a long air exchange time and a large amount of gas when air exchanging. CONTENT

[0003] The present application aims to provide an air exchange device of an anaerobic workstation, and aims to solve the problem of a long air exchange time and a large amount of gas in the related art.

[0004] The air exchange device of the anaerobic workstation provided by the present application comprises: an air inlet pipeline arranged at the bottom of one side of a box of the anaerobic workstation; a plurality of air outlets in the form of air holes are distributed on the air inlet pipeline; an interface of the air inlet pipeline is connected to a mixed gas source, and the air inlet pipeline is used to fill the gas from the mixed gas source into the box through the air outlets; an air outlet pipeline arranged at the top of the other side of the box; a plurality of air outlets in the form of air holes are distributed on the air outlet pipeline; and an air outlet centrifugal fan arranged above the air outlet pipeline; an air inlet of the air outlet centrifugal fan is connected to an air outlet damper of the air outlet pipeline, and the air outlet centrifugal fan is used to suck the gas in the box into the fan through the air outlets of the air outlet pipeline and the air outlet damper, and then discharge the gas out of the box.

[0005] In the implementation process, the air exchange device of the anaerobic workstation comprises the air inlet pipeline arranged at the bottom of one side of the box, the air outlet pipeline arranged at the top of the other side of the box, and the air outlet centrifugal fan arranged above the air outlet pipeline. The air exchange device is characterized in that: a plurality of air outlets in the form of air holes are arranged on the air inlet pipeline, a plurality of air outlets in the form of air holes are arranged on the air outlet pipeline, when the anaerobic workstation is air exchanging, the gas in the mixed gas source enters the box through the air outlets of the air inlet pipeline, and the original gas in the box is sucked into the fan through the air outlets of the air outlet pipeline and the air outlet damper, and then discharged out of the box. In this way, the original high-oxygen gas in the box is efficiently exchanged by high-pressure injection, negative extraction, and uniform pushing of the added high-pressure gas, so as to effectively shorten the air exchange time and reduce the amount of gas.

[0006] Further, in some embodiments, the number of air outlets on the air inlet pipeline is greater than or equal to 4.

[0007] In the implementation process described above, at least 4 gas outlets are provided on the air inlet pipeline to improve the ventilation efficiency.

[0008] Further, in some embodiments, the diameter of the gas outlet ranges from 1mm to 5mm.

[0009] In the implementation process described above, by setting appropriate gas outlet sizes, the system can meet the needs of the working environment and maintain good performance.

[0010] Further, in some embodiments, the angle between the gas outlet and the mounting surface of the air inlet pipeline is 45°.

[0011] In the implementation process described above, by setting appropriate gas hole angles, it can be ensured that the gas is evenly distributed in the workstation, thereby improving the ventilation efficiency.

[0012] Further, in some embodiments, the number of exhaust outlets on the exhaust pipeline is greater than or equal to 4.

[0013] In the implementation process described above, a setting method for the number of exhaust outlets is provided.

[0014] Further, in some embodiments, the diameter of the exhaust outlet ranges from 1mm to 5mm.

[0015] In the implementation process described above, a setting method for the size of the exhaust outlet is provided.

[0016] Further, in some embodiments, the angle between the exhaust outlet and the mounting surface of the exhaust pipeline is 45°.

[0017] In the implementation process described above, a setting method for the orientation of the exhaust outlet is provided.

[0018] Further, in some embodiments, it further includes a pressure difference sensor arranged on the side plate of the box for detecting the positive and negative pressure of the box.

[0019] In the implementation process described above, a pressure difference sensor is added to monitor the pressure difference inside and outside the workstation in real time, so that the operator can understand the working efficiency of the ventilation device and adjust it according to the actual situation, thereby optimizing the ventilation process and ensuring the efficient, safe and stable operation of the anaerobic workstation.

[0020] Further, in some embodiments, it further includes a hydrogen sensor arranged on the top of the box for detecting the hydrogen concentration in the box, and an oxygen sensor arranged on the top of the box for detecting the oxygen concentration in the box.

[0021] In the implementation process, the hydrogen sensor and the oxygen sensor are arranged in the box of the anaerobic workstation, and are used for detecting the hydrogen concentration and the oxygen sensor in the box respectively, so that the real-time monitoring and accurate control of the gas concentration in the workstation are realized, and the operator can accurately master the air exchange progress.

[0022] Other features and advantages of the present application will be described in the following description, or can be inferred from the description, or can be determined without doubt, or can be known by implementing the above-mentioned technologies disclosed in the present application.

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are specifically described, and the accompanying drawings are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0025] Figure 1 A schematic diagram of the air exchange device of the anaerobic workstation provided by the embodiments of the present application is shown in the figure.

[0026] Figure 2 A schematic diagram of the design principle of the air exchange device provided by the embodiments of the present application is shown in the figure, wherein the left figure is a schematic diagram of the air exchange efficiency corresponding to the single-inlet and single-outlet mode in the related art, and the right figure is a schematic diagram of the air exchange efficiency corresponding to the air exchange device provided by the embodiments of the present application.

[0027] Figure 3 A schematic diagram of another air exchange device of the anaerobic workstation provided by the embodiments of the present application is shown in the figure.

[0028] Figure 4 A schematic diagram of the structure of the air inlet pipeline of the air exchange device provided by the embodiments of the present application is shown in the figure.

[0029] Figure 5 A schematic diagram of the structure of the air exhaust pipeline of the air exchange device provided by the embodiments of the present application is shown in the figure.

[0030] Figure 6 A schematic diagram of the air exchange effect realized in the box of the air exchange device provided by the embodiments of the present application is shown in the figure.

[0031] Wherein: 11 - air inlet pipeline; 12 - air outlet pipeline; 13 - air outlet centrifugal fan; 14 - box; 15 - air outlet; 16 - mixed gas source; 17 - air outlet; 18 - air outlet damper; 19 - differential pressure sensor; 20 - oxygen sensor; 21 - hydrogen sensor; 22 - air inlet electromagnetic valve; 23 - air inlet pressure reducing valve; 24 - safety pressure relief valve. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0033] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0034] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned partial 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. Those skilled in the art can understand the specific meaning of these terms in the present application according to the specific situation.

[0035] In addition, the terms "mount", "set", "provided with", "connected", "connected" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or point connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific situation.

[0036] In addition, the terms "first", "second", and the like are used merely to distinguish different devices, elements or components (which can be of the same or different type and configuration), and do not imply relative importance or quantity of the indicated devices, elements or components. The meaning of "a plurality" is two or more, unless otherwise specified.

[0037] As described in the background, the prior art anaerobic workstation has the problem of long aeration time and large gas consumption. Based on this, the present application provides an aeration device for an anaerobic workstation to solve the above problems.

[0038] Next, the embodiments of the present application are introduced:

[0039] As shown in Figure 1 , Figure 1 is a schematic diagram of an aeration device for an anaerobic workstation provided by the embodiments of the present application, which comprises:

[0040] An air inlet pipe 11 is arranged at the bottom of one side of the box 14 of the anaerobic workstation; a plurality of air outlets 15 in the form of air holes are distributed on the air inlet pipe 11; the interface of the air inlet pipe 11 is connected to a mixed gas source 16, for filling the gas from the mixed gas source 16 into the box 14 through the air outlets 15;

[0041] An air outlet pipe 12 is arranged at the top of the opposite side of the box 14; a plurality of air outlets 17 in the form of air holes are distributed on the air outlet pipe 12;

[0042] An air outlet centrifugal fan 13 is arranged above the air outlet pipe 12; the air inlet of the air outlet centrifugal fan 13 is connected to an air outlet damper 18 of the air outlet pipe 12, for sucking the gas in the box 14 into the fan through the air outlets 17 and discharging the gas out of the box 14.

[0043] The above aeration device adopts a reasonable layout of air inlet and outlet pipes, a plurality of air outlets in the form of air holes are arranged on the air inlet pipe, and a plurality of air outlets in the form of air holes are arranged on the air outlet pipe. In this way, during aeration, the gas in the mixed gas source will enter the box through the air outlets, and the original gas in the box will be sucked into the fan through the air outlets and the air outlet damper, and then discharged out of the box.

[0044] The design principle of this device is shown in Figure 2 , wherein, Figure 2The left graph of FIG. 1 is a schematic diagram of the ventilation efficiency of the prior art ventilation device with a single inlet and a single outlet, and the right graph of FIG. 1 is a schematic diagram of the ventilation efficiency of the ventilation device of the present embodiment (for example, the ventilation device has four gas outlets on the inlet pipeline and four exhaust outlets on the exhaust pipeline). The arrow direction represents the theoretical gas flow direction, and the shaded area represents the theoretical ventilation area, i.e., the remaining area is the area that cannot be ventilated. The ventilation efficiency can be determined based on the ratio of the ventilation area to the remaining area, and the ventilation efficiency of the ventilation device of the present embodiment is Figure 2 Therefore, the ventilation device of the present embodiment can effectively improve the ventilation efficiency, thereby solving the problems of long ventilation time and large gas consumption of the anaerobic workstation in the prior art.

[0045] Specifically, in the ventilation device, the installation position of the inlet pipeline can be set according to the installation position of the mixed gas source. For example, when the mixed gas source of the anaerobic workstation is arranged on the right side of the box, the inlet pipeline can be arranged at the bottom of the right side of the box, i.e., the lower right side of the box, and correspondingly, the exhaust pipeline can be arranged at the bottom of the left side of the box, i.e., the upper left side of the box. The box is the core component of the anaerobic workstation, which is an anaerobic bacteria culture chamber and also an operation chamber for experiment operation of an operator. When the inlet pipeline is installed in the box, a hole can be opened at the corresponding position, the size of the hole is consistent with the size of the interface of the inlet pipeline, and a sealing device such as a sealing ring is used to prevent gas leakage in the box. Similarly, when the exhaust pipeline is installed in the box, a hole can be opened at the corresponding position, the size of the hole is consistent with the size of the exhaust damper of the exhaust pipeline, and a sealing device such as a sealing ring is used to prevent gas leakage in the box. The mixed gas source can be regarded as a gas supply system of the anaerobic workstation, which can be composed of a hydrogen gas tank, an oxygen gas tank and a nitrogen gas tank. During ventilation, the inlet electromagnetic valve of the mixed gas source is opened to fill high-pressure gas into the box, thereby creating an oxygen-free environment. The interface of the inlet pipeline connected to the mixed gas source can be arranged as an electric ventilation damper. During ventilation, the ventilation damper is opened, and after ventilation is completed, the ventilation damper is closed.

[0046] The gas outlets on the inlet pipeline can be installed by opening holes on the inlet pipeline and using appropriate connecting elements such as glue, threaded connection, flange connection, etc. In some embodiments, the number of gas outlets on the inlet pipeline is greater than or equal to 4. Insufficient number of gas outlets can limit the flow of gas, resulting in insufficient exchange of gas in the box and affecting the ventilation efficiency. Therefore, arranging at least 4 gas outlets on the inlet pipeline can improve the ventilation efficiency. In implementation, the specific number of gas outlets can be set according to the size of the positive and negative pressure of the box, the ventilation volume and the area of the box. For example, for a conventional size workstation, the number of gas outlets on the inlet pipeline can be set to 4, and for a large size workstation, the number of gas outlets on the inlet pipeline can be set to 8.

[0047] The diameter of the air outlet also affects the performance of the ventilation device. When the diameter of the air outlet is too large, the air flow in some areas may be too strong, while the air flow in other areas may be insufficient, thereby affecting the uniformity and stability of the gas in the workstation. When the diameter of the air outlet is too small, the flow of the gas will be severely restricted, thereby causing the ventilation efficiency to drop sharply. Therefore, in some embodiments, the diameter of the air outlet ranges from 1 mm to 5 mm. By setting the appropriate size of the air outlet, it is ensured that the system can meet the needs of the working environment and maintain good performance. In addition, the specific diameter of the air outlet can also be set according to the size of the positive and negative pressure of the box, the ventilation volume, and the area of the box. For example, for a small-sized workstation, the diameter of the air outlet can be set to 1 mm, and for a large-sized workstation, the diameter of the air outlet can be set to 5 mm.

[0048] Considering that when installing the air outlet, if the air outlet is directly opposite the top plate or side plate of the box, it is easy to produce the effect of adhesion to the wall, which is not conducive to ventilation. Therefore, in some embodiments, the angle between the air outlet and the installation surface of the air inlet pipeline is 45°. By setting the appropriate angle of the air hole, it is ensured that the gas is uniformly distributed in the workstation, thereby improving the ventilation efficiency.

[0049] In the above-mentioned ventilation device, the exhaust pipeline and the exhaust centrifugal fan cooperate to exhaust the original gas in the box to the outside of the box. The exhaust pipeline is provided with a plurality of exhaust outlets on one side, and an exhaust air door connected to the air inlet of the exhaust centrifugal fan on the other side. The exhaust air door here can be an electric air door, which can be opened and closed through remote control or automatic control. During ventilation, the exhaust air door is opened, and during non-ventilation, the exhaust air door is closed. The exhaust outlet can be set in the same way as the air outlet, that is:

[0050] Alternatively, the number of exhaust outlets on the exhaust pipeline can be greater than or equal to 4.

[0051] Alternatively, the diameter of the exhaust outlet can range from 1 mm to 5 mm.

[0052] Alternatively, the angle between the exhaust outlet and the installation surface of the exhaust pipeline can be 45°.

[0053] In addition, in some embodiments, the above-mentioned ventilation device can further include a differential pressure sensor arranged on the side plate of the box for detecting the positive and negative pressure of the box. The positive and negative pressure here refers to the relative relationship between the gas pressure inside the box and the atmospheric pressure outside. The differential pressure sensor can monitor the pressure difference between the inside and outside of the workstation in real time. Through the feedback of the pressure information, the operator can understand the working efficiency of the ventilation device and make adjustments according to the actual situation, thereby optimizing the ventilation process and ensuring the efficient, safe and stable operation of the anaerobic workstation.

[0054] In some embodiments, the ventilation device described above can further comprise: a hydrogen sensor arranged at the top of the box for detecting the hydrogen concentration in the box; and an oxygen sensor arranged at the top of the box for detecting the oxygen concentration in the box. That is, the hydrogen sensor and the oxygen sensor are arranged in the box of the anaerobic workstation to detect the hydrogen concentration and the oxygen concentration in the box, respectively, so as to realize real-time monitoring and accurate control of the gas concentration in the workstation, and the operator can accurately grasp the ventilation progress. Moreover, the hydrogen sensor can monitor the hydrogen concentration in real time, and the operator can take measures in time, such as closing the hydrogen source and starting the ventilation system, before the hydrogen concentration reaches a dangerous level, so as to prevent the hydrogen concentration from continuing to rise and causing a safety accident.

[0055] The embodiment of the present application provides a ventilation device of an anaerobic workstation, which comprises an air inlet pipeline arranged at the bottom of one side of the box, an air outlet pipeline arranged at the top of the opposite side of the box, and an air outlet centrifugal fan arranged above the air outlet pipeline, wherein a plurality of gas hole-shaped air outlets are arranged on the air inlet pipeline, and a plurality of gas hole-shaped air outlets are arranged on the air outlet pipeline. When the anaerobic workstation is ventilated, the gas in the mixed gas source enters the box through the air outlets of the air inlet pipeline, and the original gas in the box is sucked into the fan through the air outlets of the air outlet pipeline and the air outlet damper, and then is discharged out of the box. In this way, by means of the gas holes distributed on the upper and lower opposite sides of the box, the high-pressure gas is injected and the original air in the box is extracted, the original air in the box is uniformly pushed out of the air outlet by the added high-pressure gas, the high-oxygen gas in the original box can be efficiently replaced, and the ventilation time is effectively shortened and the gas consumption is reduced.

[0056] In order to make a more detailed description of the scheme of the present application, a specific embodiment will be introduced as follows:

[0057] The embodiment scheme provides an anaerobic workstation, and a ventilation device of the anaerobic workstation is as shown in Figure 3 The ventilation device is based on the structure of the ventilation device as shown in Figure 1 The following settings are added:

[0058] A differential pressure sensor 19 is arranged on the side plate of the box 14;

[0059] An oxygen sensor 20 and a hydrogen sensor 21 are arranged on the top plate of the box;

[0060] An air inlet electromagnetic valve 22 and an air inlet pressure reducing valve 23 are arranged between the air inlet pipeline 11 and the mixed gas source 16;

[0061] A safety pressure relief valve 24 is arranged on the side plate of the box 14.

[0062] During the aeration operation, the control system (not shown in the figure) of the anaerobic workstation detects the positive and negative pressure of the box through the pressure difference sensor 19, detects the oxygen concentration in the box 14 through the oxygen sensor 20, and detects the hydrogen concentration in the box 14 through the hydrogen sensor 21, and controls the air inlet electromagnetic valve 22, the air inlet pressure reducing valve 23, the exhaust air door 18 and the exhaust centrifugal fan 13 according to the detected parameters, and determines that the aeration operation is completed when the oxygen concentration fed back by the oxygen sensor 20 is less than 0.5%.

[0063] The structure of the air inlet pipeline 11 of the aeration device is shown in Figure 4 The air inlet pipeline 11 is provided with four air outlets 15, each air outlet 15 has a diameter of 1mm, and the included angle between each air outlet 15 and the mounting surface of the air inlet pipeline 11 is 45°.

[0064] The structure of the exhaust pipeline 12 of the aeration device is shown in Figure 5 The exhaust pipeline 12 is provided with six exhaust outlets 17, the diameters of the exhaust outlets 17 range from 1mm to 5mm, and the diameters and orientations of the exhaust outlets 17 can be different when provided.

[0065] The embodiment scheme utilizes small holes to release high-pressure mixed gas to push the original air in the box, and at the same time utilizes a high negative pressure fan to attract the original air flow in the box, so as to realize the aeration effect as shown in Figure 6 Thus, the aeration efficiency is improved, and the gas cost is saved.

[0066] In all the embodiments of the present application, "large", "small", "many", "few", "upper" and "lower" are relative, and the description of such relative terms will not be repeated in the embodiments.

[0067] It should be understood that the "in the present embodiment", "in the present embodiment" or "as an optional embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the present application. Therefore, "in the present embodiment", "in the present embodiment" or "as an optional embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in any suitable manner in one or more embodiments. Those skilled in the art should also know that the embodiments described in the specification are optional embodiments, and the actions and modules involved are not necessarily required by the present application.

[0068] In various embodiments of the present application, it should be understood that the magnitude of the sequence number of the above-mentioned processes does not mean the inevitable sequence of execution order, and the execution order of the processes should be determined according to their functions and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0069] The above merely provides a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An air exchange device for an anaerobic workstation, characterized in that, The utility model relates to an anaerobic workstation, comprising: an air inlet pipe arranged at the bottom of one side of a box of the anaerobic workstation; a plurality of air outlets in the form of air holes are distributed on the air inlet pipe; an interface of the air inlet pipe is connected to a mixed gas source, and the air inlet pipe is used to fill the gas from the mixed gas source into the box through the air outlets; an air outlet pipe arranged at the top of the opposite side of the box; a plurality of air outlets in the form of air holes are distributed on the air outlet pipe; an air outlet centrifugal fan arranged above the air outlet pipe; an air inlet of the air outlet centrifugal fan is connected to an air outlet damper of the air outlet pipe, and the air outlet centrifugal fan is used to suck the gas in the box into the box and discharge the gas out of the box through the air outlets; an angle between the air outlets and a mounting surface of the air inlet pipe is 45 degrees; an angle between the air outlets and a mounting surface of the air outlet pipe is 45 degrees.

2. The ventilation device according to claim 1, characterized in that The number of the air outlets on the air inlet pipe is greater than or equal to 4.

3. The ventilation device according to claim 1, characterized in that The diameter of the air outlets ranges from 1 mm to 5 mm.

4. The ventilation device of claim 1, wherein, The number of the air outlets on the air outlet pipe is greater than or equal to 4.

5. The ventilation device of claim 1, wherein The diameter of the air outlets ranges from 1 mm to 5 mm.

6. The ventilation device of claim 1, wherein, The utility model further comprises: a differential pressure sensor arranged on a side plate of the box and used to detect the positive and negative pressure of the box.

7. The ventilation device of claim 1, wherein The utility model further comprises: a hydrogen sensor arranged at the top of the box and used to detect the hydrogen concentration in the box; an oxygen sensor arranged at the top of the box and used to detect the oxygen concentration in the box.

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