CN107821370B - Low-oxygen insecticidal system and control method thereof - Google Patents
Low-oxygen insecticidal system and control method thereof Download PDFInfo
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- CN107821370B CN107821370B CN201711048117.7A CN201711048117A CN107821370B CN 107821370 B CN107821370 B CN 107821370B CN 201711048117 A CN201711048117 A CN 201711048117A CN 107821370 B CN107821370 B CN 107821370B
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- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
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Abstract
The invention relates to a low-oxygen insecticidal system, which comprises: a nitrogen making part; one end of the pipeline is connected with the nitrogen making part, and the other end of the pipeline can be connected with the airtight enclosure structure; a gas adjusting part connected to the pipeline; and a control section connected to the nitrogen production section and the gas conditioning section; wherein the gas conditioning section can be controlled to provide different purity and different kinds of gas.
Description
Technical Field
The invention relates to an insecticidal system, in particular to a low-oxygen insecticidal system and a control method thereof.
Background
The problem of pest control has become a universal problem to be solved urgently in the field of storage of cultural relics, books, archives and the like in the collection of cultural relics. Chemical fumigation and physical radiation methods are rarely used because they tend to cause irreversible damage to the collection and may also be harmful to the health of workers. Although the freezing insecticidal method and the vacuum nitrogen-filled insecticidal method can avoid the problems, large-scale batch insecticidal treatment is difficult due to high cost.
The hypoxia insecticidal is a safe, environment-friendly, pollution-free and injury-free efficient insecticidal method. How to realize the hypoxic insect pest control treatment more efficiently, conveniently and at low cost is of great significance to the field.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a low-oxygen insecticidal system, which comprises: a nitrogen making part; one end of the pipeline is connected with the nitrogen making part, and the other end of the pipeline can be connected with the airtight enclosure structure; a gas adjusting part connected to the pipeline; and a control section connected to the nitrogen production section and the gas conditioning section; wherein the gas conditioning section can be controlled to provide different purity and different kinds of gas.
The hypoxic insecticidal system as described above, wherein the gas conditioning section comprises a purity conditioning device and a gas distribution device.
The hypoxic insecticidal system as described above, wherein the purity adjustment device comprises one or more branches that can be controlled to provide different concentrations of nitrogen at different flow rates.
The hypoxic insecticidal system as described above, wherein the gas distribution device comprises one or more branches that can be controlled to provide gases of different composition ratios.
The hypoxic insecticidal system as described above, wherein the gas conditioning section comprises a gas conditioning line and a plurality of branches connected to the gas conditioning line, wherein the plurality of branches connected to the gas conditioning line can be controlled to provide nitrogen and gas of different composition ratios.
The hypoxic insecticidal system as described above, wherein the control section is capable of receiving information from gas detection means within the gas-tight enclosure.
The hypoxic insecticidal system as described above, wherein the control section is capable of receiving information from the gas conditioning section or a gas detection device following the gas conditioning section.
The hypoxic insecticidal system as described above, wherein the nitrogen generator is capable of providing nitrogen gas at different concentrations; wherein the control part can control the nitrogen generator and/or the gas adjusting part to provide nitrogen with different concentrations in a gradient manner.
According to another aspect of the present invention, there is provided a method for controlling a hypoxic insecticidal system, comprising the steps of: the nitrogen making part can be used for sequentially providing nitrogen with different purities, and the nitrogen purity presents an increasing trend; and the gas regulating part is used for providing gas with different multi-component proportions.
The method as described above, further comprising: the bypass gas is provided by a gas conditioning section.
The method as described above, further comprising: the flow rate of the by-pass gas is changed in response to a period of time or information from the gas detection device or the gas detection device of the gas tight enclosure after the gas conditioning section or the gas conditioning section.
The method as described above, further comprising: the nitrogen-producing component is utilized to provide a second concentration of gas in response to a period of time or information from the gas-detecting component or a gas-detecting component of the gas-tight enclosure subsequent to the gas-regulating component or the gas-regulating component.
The method as described above, further comprising: providing a second concentration of gas with the nitrogen-producing portion in response to information from a gas detection device of the gas tight enclosure; and changing the flow rate of the by-pass gas in response to a period of time or information from the gas regulating section or a gas detecting device after the gas regulating section.
The method as described above, further comprising: the gas conditioning section is utilized to vary the flow of the different types of gas in response to a period of time or information from the gas sensing device or the gas sensing device of the gas tight enclosure after the gas conditioning section or the gas conditioning section.
Drawings
Preferred embodiments of the present invention will now be described in further detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of a hypoxic insecticidal system according to one embodiment of the invention;
FIGS. 2A and 2B are schematic diagrams of a purity adjustment apparatus according to an embodiment of the present invention;
FIG. 3 is a flow diagram of a gas conditioning method according to an embodiment of the invention;
FIG. 4 is a schematic diagram of a gas distribution apparatus according to one embodiment of the invention; and
fig. 5 is a flow chart of a hypoxic insecticidal method according to one embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the following detailed description, reference is made to the accompanying drawings that form a part hereof and in which is shown by way of illustration specific embodiments of the application. In the drawings, like numerals describe substantially similar components throughout the different views. Various specific embodiments of the present application are described in sufficient detail below to enable those skilled in the art to practice the teachings of the present application. It is to be understood that other embodiments may be utilized and structural, logical or electrical changes may be made to the embodiments of the present application.
The invention provides a low-oxygen insecticidal system suitable for killing insects in various articles such as cultural relics, books, files, traditional Chinese medicinal materials and the like in a low-oxygen mode and a control method thereof. According to one embodiment of the invention, the low-oxygen insecticidal system comprises a nitrogen making part, an airtight part and a control part, wherein a gas regulating part is further included between the nitrogen making part and the airtight part, and the gas regulating part is used for regulating the concentration of nitrogen and introducing other gases besides the nitrogen.
Fig. 1 is a schematic view of a hypoxic insecticidal system according to one embodiment of the invention. As shown in fig. 1, the hypoxic insecticidal system 100 includes an air compressor 101 and a nitrogen generator 102. The two parts form the main body of the nitrogen making part and provide power air source for other equipment. Of course, the nitrogen-producing portion may also include other components or be implemented with other techniques known in the art. Further, the air compressor 101 may be a reciprocating piston type, a rotary vane type, a rotary screw type, or the like. Nitrogen generator 102 includes a molecular sieve nitrogen generation facility, a membrane nitrogen generation facility, or other nitrogen generation facility.
As shown in fig. 1, the hypoxic insecticidal system 100 includes a gas conditioning section and an airtight enclosure 105. According to one embodiment of the invention, the gas conditioning section comprises a purity conditioning device 103 and a gas distribution device 104; wherein, the purity adjusting device 103 and the gas distribution device 104 are respectively connected between two outlets of the nitrogen making machine 102 and a gas inlet 106 of the air-tight enclosure 105. Fig. 1 shows only one possible connection, but other connections are also possible. For example, the purity adjustment apparatus 103 and the gas distribution apparatus 104 may be connected to an outlet of the nitrogen generator 102 or to two inlets of the gas-tight enclosure 105, respectively. Further, according to another embodiment of the present invention, the purity regulating device 103 and the gas distribution device 104 may be integrated in the same apparatus.
According to one embodiment of the invention, the airtight enclosure 105 may be an airtight container of different volumes, different forms of storehouses, file cabinets, safe deposit boxes, and flexible tents, bags, etc. The gas tight enclosure 105 comprises a gas detection device 107 to detect one or more gases in the gas tight enclosure 105. According to an embodiment of the invention, the airtight enclosure is not an essential feature.
As shown in fig. 1, the hypoxic insecticidal system 100 further includes a control section 200. The control section 200 includes a processor 201, a gas detection unit 202, and a display screen 203.
The transmission of the measurement signals and the control signals (as indicated by the dashed lines) is shown in fig. 1. The gas detection unit 202 receives a signal of the gas detection device 107 to realize the detection of the gas. The gas detection device 107 and the gas detection unit 202 may be implemented in a variety of ways. For example, the gas detection device 107 may be only one sensor that samples gas and sends an electrical signal, an infrared signal, or the like detected for the sampled gas to the gas detection unit 202 for processing. Alternatively, the gas detection device 107 may include a processing section of an electric signal or an infrared signal, and the processed signal is sent to the gas detection unit 202. The gas detection unit 202 converts the received signals into corresponding concentrations or other measures of one or more gases and sends them to the processor 201.
The processor 201 controls the start/stop of the air compressor 101 and the nitrogen generator 102 according to the concentration of oxygen and/or other gases in the airtight enclosure 105; and controlling the purity adjustment means 103 and the gas distribution means 104 to displace gas in the gas tight enclosure 105. Further, the processor 201 displays the concentration of oxygen and/or other gases in the airtight enclosure 105 to a user via the display screen 203.
The control section 200 may further include an input device. The user can control the hypoxia insecticidal system through interaction of the input device and the display screen. For example, setting a desired concentration of oxygen and/or other gases in the gas-tight enclosure 105; setting working procedures of an air compressor 101, a nitrogen making machine 102, a control purity adjusting device 103 and a gas distribution device 104; or controlling the sensitivity of the gas detection device, etc. According to an embodiment of the present invention, the display screen 203 may be a touch screen, and has both display and input functions.
FIG. 2A is a schematic view of a purity adjustment apparatus according to one embodiment of the present invention. As shown in fig. 2A, the purity adjusting means 300 comprises a gas inlet 301, a gas outlet 302 and a conduit 303 between the gas inlet 301 and the gas outlet 302. The gas inlet 301 is connected to the gas outlet of the nitrogen generator 102. According to one embodiment of the present invention, nitrogen generator 102 is capable of providing nitrogen gas at different flow rates and at different concentrations. Further, one or more bypass valves are included on line 303, such as: a first bypass valve 307, a second bypass valve 308, and a third bypass valve 309. One end of each of the plurality of branches 304-306 is connected to each of the branch valves 307-309 in sequence, and the other end is connected to the air outlet 302. According to one embodiment of the present invention, an air cleaning device is included between the air compressor 101 and the nitrogen generator 102 to clean the air output from the air compressor 101. For example, the air cleaning apparatus includes a multi-stage filtering device and/or an air drying device.
Fig. 2B is a schematic diagram of a purity adjustment apparatus according to another embodiment of the present invention. As shown in fig. 2B, the purity adjusting device 300 includes a gas inlet 301, a gas outlet 302, and a pipe 303 between the gas inlet 301 and the gas outlet 302. The gas inlet 301 is connected to the gas outlet of the nitrogen generator 102. According to one embodiment of the present invention, nitrogen generator 102 is capable of providing nitrogen gas at different flow rates and at different concentrations. Further, one or more branches 304 and 306 are included on the conduit 303, such as: a first leg 304, a second leg 305, and a third leg 306. One end of each of the plurality of pipes 304 and 306 includes a branch valve 307-309. A plurality of branches 304-306 may be connected to a gas source 320. The gas source 320 may be the nitrogen generator 101 or other gas source. According to one embodiment of the present invention, an air cleaning device is included between the air compressor 101 and the nitrogen generator 102 to clean the air output from the air compressor 101. For example, the air cleaning apparatus includes a multi-stage filtering device and/or an air drying device.
According to one embodiment of the invention, the plurality of branches 304-306 may provide nitrogen at different concentrations and at different flow rates. For example, the plurality of branches 304-306 may have different tube diameters; or the valves 307 and 309 may be of different sizes. The processor 202 may control the opening and closing of the valves 307-309.
According to an embodiment of the present invention, the purity regulating device 300 comprises a gas detecting device 311 for detecting the concentration of a gas such as oxygen in the gas. Gas detection device 311 may be disposed in gas outlet 302, or may be disposed in conduit 303. According to another embodiment of the present invention, the gas detection device 311 may be disposed on the gas line outside the purity adjusting device 300.
According to one embodiment of the invention, the purity regulating device 300 comprises a flow detecting device (not shown) for detecting the flow of gas provided by the purity regulating device. The flow detection means may be provided in the outlet port 302 or in the conduit 303. According to another embodiment of the present invention, the flow detecting means 311 may be provided on the gas line outside the purity adjusting means 300.
According to one embodiment of the invention, the gas detection means and the flow detection means may be integrated with each other.
According to one embodiment of the invention, the processor 202 controls the concentration and flow rate of the gas provided by the nitrogen generator and the concentration and flow rate of the gas provided by the plurality of branches 304 and 306 to provide the desired flow rate and concentration of the gas in the purity adjustment device 300. Because the air compressor 101 and the nitrogen generator 102 are the main energy consumption devices in the low-oxygen insecticidal system. Therefore, the low-oxygen replacement efficiency in the airtight enclosure space is improved, and nitrogen replacement with various different purities can be adopted, so that the running time of the air compressor 101 and the nitrogen generator 102 is reduced, and the energy consumption is reduced. The purity adjustment device 300 of the present invention cooperates with the nitrogen generator 102 to enable fine adjustment of the gas entering the gas tight enclosure 105.
FIG. 3 is a flow diagram of a gas conditioning method according to one embodiment of the invention. As shown in fig. 3, the gas conditioning method 3100 comprises the steps of: at step 3110, providing a first gas at a first concentration using a nitrogen generator; at 3120, a valve in the line is controlled to provide a variable flow or concentration of the bypass gas.
According to one embodiment of the invention, at step 3120, nitrogen is provided in a gradient manner at different concentrations. Specifically, according to an embodiment of the present invention, step 3120 may include: at 3121, a valve in the conduit is controlled to provide a first flow of bypass gas. Optionally, at 3122, after a period of time has elapsed, a valve on the conduit is controlled to provide a second flow of the branch gas. Optionally, at 3123, after a period of time has elapsed, a valve on the conduit is controlled to provide a third flow of the branch gas. Wherein the first flow rate is less than the second flow rate, and the second flow rate is less than the third flow rate. According to one embodiment of the present invention, the valves on the branches may be controlled to open simultaneously or partially; either partially or fully closed, so that a variety of different flow rates of the bypass gas can be provided for selection.
According to another embodiment of the present invention, step 3120 may include: at 3122, a valve in the line is controlled to provide a bypass gas at a first concentration. Optionally, at 3122, after a period of time has elapsed, a valve on the conduit is controlled to provide a second concentration of the branch gas. Optionally, at 3123, after a period of time has elapsed, a valve on the conduit is controlled to provide a third concentration of the branch gas. Wherein the first concentration is less than the second concentration, and the second concentration is less than the third concentration. According to one embodiment of the present invention, the valves on the branches may be controlled to open simultaneously or partially; either partially or fully closed, so that a variety of different concentrations of the by-pass gas can be provided for selection. According to an embodiment of the present invention, the adjustment of the flow rate and the concentration can be performed simultaneously to achieve the effect of rapid replacement.
At step 3130, providing a second gas at a second concentration using the nitrogen generator; at step 3140, control valves on the line, variable flow of the branch gas; wherein the second concentration is greater than the first concentration. Because the oxygen concentration required in the airtight enclosure is usually very low, if high-concentration nitrogen is directly provided for replacement, the replacement efficiency is not high, and the energy consumption is easy to increase. And the adoption of a gradient oxygen reduction mode can reduce energy consumption to the maximum extent and provide replacement efficiency. In the method of the present invention, the nitrogen gas with different concentrations provided by the nitrogen generator is a gradient mode, and the branch gas with variable flow rate is increased in a gradient mode. Therefore, the low-oxygen insecticidal system can achieve the purpose of high efficiency and energy conservation.
At step 3150, providing a third gas at a third concentration using a nitrogen generator; at step 3160, control valves on the line, variable flow of the branch gas; wherein the third concentration is greater than the second concentration. And a multi-gradient mode is adopted, so that the low oxygen content required by the airtight enclosure structure is gradually achieved, and a low oxygen environment is formed.
According to an embodiment of the invention, the gas conditioning method further comprises: after a predetermined time, the valves on the nitrogen generator and/or the multiple branches are adjusted to provide gases of different concentrations.
According to an embodiment of the invention, the gas conditioning method further comprises: and detecting the concentration of the gas in the airtight enclosure structure, and adjusting the valves on the nitrogen making machine and/or the multiple branches according to the detected concentration. For example: adjusting a valve on the nitrogen generator and/or the pipeline to provide gas with a first concentration when the concentration of the gas in the airtight enclosure reaches a first value; when the concentration of the gas in the airtight enclosure reaches a second value, adjusting a valve on the nitrogen generator and/or the pipeline to provide the gas with a second concentration; and the rest can be done in the same way until the gas in the airtight enclosure structure reaches the required concentration.
According to an embodiment of the invention, the gas conditioning method further comprises: the concentration of the gas provided by the purity regulating device is detected, and the valves on the nitrogen making machine and/or the branches are adjusted according to the detected concentration and flow. For example: adjusting a valve on the nitrogen generator and/or the pipeline to provide gas of a first concentration when the concentration of the gas of the purity regulating device reaches a first value; when the concentration of the gas of the purity adjustment device reaches a second value, the valves on the nitrogen generator and/or the piping are adjusted to provide a second concentration of gas.
According to an embodiment of the invention, the concentration of the gas in the gas-tight enclosure and the concentration of the gas provided by the purity regulating device and the corresponding time can be integrated to more accurately control the valves on the nitrogen generator and/or the multiple branches. For example, the concentration of the nitrogen generator output gas is adjusted based on the concentration of the gas in the gas tight enclosure. The valves on the plurality of branches are adjusted according to the concentration or time of the gas provided by the purity adjusting device. Therefore, the invention provides a very flexible gas purity adjusting mode, which can improve the gas replacement efficiency in the airtight enclosure structure to the maximum extent and reduce the energy consumption.
FIG. 4 is a schematic diagram of a gas distribution apparatus according to one embodiment of the invention. As shown, the air distribution device 400 includes an air inlet 401, an air outlet 402, and a conduit 403 between the air inlet 401 and the air outlet 402. The gas inlet 401 is connected to the gas outlet of the nitrogen generator 102. According to one embodiment of the present invention, nitrogen generator 102 is capable of providing nitrogen gas at different flow rates and at different concentrations. Further, one or more branches are included on the pipeline, such as: a first branch 404, a second branch 405, and a third branch 406. The air pipes 404 and 406 are connected to the pipes 404 at one end and connected to the same or different air sources, such as a first air source, a second air source and a third air source, at the other end through valves 407 and 409. According to one embodiment of the invention, the plurality of gas sources may be carbon dioxide, argon, or other gas. According to one embodiment of the invention, the gases of the respective gas sources are subjected to a cleaning treatment and/or a drying treatment.
According to one embodiment of the present invention, the plurality of branches 404 and 406 may be connected to the same or different gas sources. Processor 202 may control the opening and closing of valves 407 and 409 to provide gas from the various gas sources to line 404. According to an embodiment of the present invention, when the plurality of branches 404 and 406 are connected to the same gas source, a control method such as a purity adjustment device can also be applied to the gas distribution device 400 to provide more precise gas distribution.
According to one embodiment of the invention, the outlet of the air distribution device is combined with the pipeline behind the outlet of the purity adjusting device, and then enters the airtight enclosure to reduce the inlet of the airtight enclosure. Of course, the air distribution device can also be independently accessed into the airtight enclosure. According to one embodiment of the invention, a flow meter is included prior to entering the airtight enclosure to measure the total flow into the airtight enclosure.
According to another embodiment of the invention, the gas distribution device may be integrated with the purity regulating device in one and the same device. For example, the lines from different sources may be brought into proximity with the lines from the purity adjustment mechanism to combine the two into the same device. According to one embodiment of the invention, the individual lines can be connected both to compressed air and to different air sources so that they can be used more flexibly. According to an embodiment of the present invention, each valve has a different ID, and in the control section, which kind of air source the valve is connected to can be set according to the ID, thereby realizing different control.
Fig. 5 is a flow chart of a hypoxic insecticidal method according to one embodiment of the invention. As shown, the hypoxic insecticidal method 500 includes the following steps: at step 510, a first concentration of gas is provided using a nitrogen-producing portion. At step 520, a different type of gas, such as carbon dioxide, argon, or other type of gas, is provided using the gas conditioning section. At 530, providing a second concentration of gas using the nitrogen-producing portion; wherein the second concentration is greater than the first concentration. The method of the present embodiment provides a method of reducing the oxygen content within an airtight enclosure in a gradient manner. An auxiliary gas, such as carbon dioxide, argon or other gas, is provided to enhance the insecticidal effect at step 520, so as to reduce the time of low-oxygen insecticidal effect and save energy.
According to an embodiment of the invention, the method of the invention further comprises: the bypass gas is provided by a gas conditioning section. The bypass gas may be compressed air. The supply of the by-pass gas can reduce the gas flow rate provided by the nitrogen production part, thereby reducing the energy consumption. Further, providing the bypass gas does not reduce the efficiency of gas displacement.
According to an embodiment of the invention, the method of the invention further comprises: the nitrogen-producing component is utilized to provide a second concentration of gas or to vary the flow of the by-pass gas in response to a period of time or information from the gas-detecting component or a gas-detecting component of the gas-tight enclosure after the gas-conditioning component or the gas-conditioning component. The invention provides a very flexible control mode, and the nitrogen generator can be controlled to provide nitrogen with different concentrations or valves on a plurality of branches to provide branch gas with different flow rates in response to a preset program or the change of the gas concentration output by the gas regulating part or the change of the gas concentration of the airtight enclosure.
For example, one embodiment of the invention may provide a second concentration of gas with the nitrogen-producing portion in response to information from a gas detection device of the gas-tight enclosure; and changing the flow rate of the by-pass gas in response to a period of time or information from the gas regulating section or a gas detecting device after the gas regulating section.
The same control scheme can be applied to the supply of different kinds of gases. According to an embodiment of the invention, the method of the invention further comprises: the gas conditioning section is utilized to vary the flow of the different types of gas in response to a period of time or information from the gas sensing device or the gas sensing device of the gas tight enclosure after the gas conditioning section or the gas conditioning section.
Examples of applications are:
in the pest breeding season, before the collection is put in storage, when a new house is moved, and the like, the whole pest control treatment needs to be performed on the bulk collection or the large-volume objects which are not suitable for transportation. The low-oxygen insecticidal system and the control method can realize insect pest control on batch collection and large-volume articles, are efficient, safe, economical and applicable, and can be widely applied and popularized in the field of insect mildew control of domestic and foreign cultural relics, books, archives and the like.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the scope of the present invention, and therefore, all equivalent technical solutions should fall within the scope of the present invention.
Claims (6)
1. A hypoxic insecticidal system, comprising:
a nitrogen making part;
one end of the pipeline is connected with the nitrogen making part, and the other end of the pipeline can be connected with the airtight enclosure structure;
a gas adjusting part connected to the pipeline;
and a control section connected to the nitrogen production section and the gas conditioning section;
wherein the gas conditioning section comprises a purity conditioning device; wherein the purity adjustment device comprises one or more branches that can be controlled to provide nitrogen at different concentrations and/or at different flow rates;
the nitrogen making part can provide nitrogen with different flow rates and different concentrations;
the control part controls the opening and closing of the nitrogen making part and the branches connected with the gas regulating pipeline to provide nitrogen with different concentrations and different flow rates;
wherein the control portion is capable of receiving information from a gas detection device within the airtight enclosure; the control part can receive information from the gas regulating part or a gas detection device behind the gas regulating part;
wherein the control section provides a first gas at a first concentration using the nitrogen producing section; the control comprises a gas regulating pipeline and a plurality of valves on branches connected with the gas regulating pipeline, and branch gas with variable flow or concentration is provided;
providing a second gas at a second concentration using the nitrogen-producing portion; the control comprises a gas regulating pipeline and a plurality of valves on branches connected with the gas regulating pipeline, and branch gas with variable flow is provided; wherein the second concentration is greater than the first concentration; and
providing a third gas at a third concentration using the nitrogen-producing portion; the control comprises a gas regulating pipeline and a plurality of valves on branches connected with the gas regulating pipeline, and branch gas with variable flow is provided; wherein the third concentration is greater than the second concentration;
adjusting the concentration of the output gas of the nitrogen production part according to the concentration of the gas in the airtight enclosure structure; the valves on the plurality of branches are adjusted according to the concentration or time of the gas provided by the purity adjusting device.
2. The hypoxic insecticidal system of claim 1, wherein the gas conditioning section further comprises a gas distribution device.
3. The hypoxic insecticidal system of claim 2, wherein the gas distribution device comprises one or more branches that can be controlled to provide gases of different compositional ratios.
4. A method for controlling the hypoxic insecticidal system as claimed in any one of claims 1-3, comprising the steps of:
providing a gas at a first concentration using a nitrogen-producing section;
providing gases of different purities and different kinds by using a gas adjusting part;
providing a second concentration of gas using the nitrogen-producing portion; and
wherein the second concentration is greater than the first concentration.
5. The method of claim 4, further comprising: a gas conditioning section is utilized to provide a by-pass gas that provides nitrogen at different concentrations and/or flows.
6. The method of claim 4, further comprising: the concentration or flow rate of the by-pass gas is changed in response to a period of time or information from the gas regulating section or a gas detection device after the gas regulating section.
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| CN111418565A (en) * | 2020-05-07 | 2020-07-17 | 天津森罗科技股份有限公司 | Combined air-conditioning insecticidal system |
| CN111802349A (en) * | 2020-08-17 | 2020-10-23 | 天津森罗科技股份有限公司 | Low-oxygen modified atmosphere insecticidal system |
| CN111838142A (en) * | 2020-08-27 | 2020-10-30 | 天津森罗科技股份有限公司 | Low-oxygen modified-atmosphere mildew-proof and bacteriostatic system and method for traditional Chinese medicinal materials |
| CN112352778A (en) * | 2020-09-29 | 2021-02-12 | 天津森罗科技股份有限公司 | Controlled atmosphere maintenance method for traditional Chinese medicinal materials |
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| CN101849465B (en) * | 2010-05-18 | 2011-09-21 | 王春录 | Air-conditioning storage method |
| CN202127634U (en) * | 2011-05-13 | 2012-02-01 | 北京卓英特科技有限公司 | Rich-nitrogen low-oxygen cotton storage device |
| CN102907220A (en) * | 2012-08-21 | 2013-02-06 | 国家粮食局科学研究院 | Circular inflation modified atmosphere grain storage device and method using device |
| CN206045819U (en) * | 2016-08-26 | 2017-03-29 | 天津森罗科技股份有限公司 | A kind of open loop air distribution system in airtight space |
| CN206182181U (en) * | 2016-08-31 | 2017-05-24 | 天津森罗科技股份有限公司 | A insecticidal sterilization system for precious article keep |
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